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Sexual Precocity in a 16-Month-Old6 \6 B* E/ c! q: g( a* `& M: {
Boy Induced by Indirect Topical) I5 Q" ]+ n( F4 ]
Exposure to Testosterone' l' I, X; t: G
Samar K. Bhowmick, MD, FACE,1 Tracy Ricke, MD,2* Y% |9 x3 X& O  |+ X/ u
and Kenneth R. Rettig, MD1% [- c2 C, j  {8 r: y
Clinical Pediatrics8 E- O8 f" b+ h, J- o
Volume 46 Number 6
1 j4 J3 Q$ `. u0 hJuly 2007 540-543% U' \/ {9 j  K. \3 B7 w
© 2007 Sage Publications( b0 W2 a( H% ~
10.1177/0009922806296651, B! y2 E0 n! E. K. ]  \% o
http://clp.sagepub.com$ i; T, A2 m! `# s! f9 `
hosted at' ^, F0 B9 E& w- q6 \* e0 M
http://online.sagepub.com
- t7 s; p- s& kPrecocious puberty in boys, central or peripheral,
+ }) A6 S0 ^% ]. ^6 [/ _8 r) Yis a significant concern for physicians. Central! u4 z3 ^* ^0 _+ d3 P
precocious puberty (CPP), which is mediated1 t3 z! H5 g  ?1 m. G
through the hypothalamic pituitary gonadal axis, has8 G# l; O3 j+ b/ x- z- U
a higher incidence of organic central nervous system
. U2 `/ A5 U- c3 Blesions in boys.1,2 Virilization in boys, as manifested# w+ h9 r3 R4 H; W
by enlargement of the penis, development of pubic2 m1 w: |8 S4 r, e- J" s- u" w1 z
hair, and facial acne without enlargement of testi-2 G7 Z. I6 `: C# m8 Q# x
cles, suggests peripheral or pseudopuberty.1-3 We
4 [) o/ z& r9 z5 K6 `6 J: ~9 ureport a 16-month-old boy who presented with the
5 p' ~9 H9 U3 r/ ^enlargement of the phallus and pubic hair develop-8 W. H3 B2 {, J2 d2 x# C  [
ment without testicular enlargement, which was due
9 }2 C9 A1 a7 i+ Z: Jto the unintentional exposure to androgen gel used by
. O4 V" f1 a) q/ }/ l  pthe father. The family initially concealed this infor-' Z! E+ b+ Q( V8 A" D6 _5 J
mation, resulting in an extensive work-up for this
7 x( p' Y5 O* W& Z# @child. Given the widespread and easy availability of, [- J2 [2 r( H
testosterone gel and cream, we believe this is proba-
& b$ \7 ?4 Z& p; H1 n7 K8 T5 M' sbly more common than the rare case report in the" U* w7 O8 S% j2 w. o
literature.46 U, d8 n3 U& B( _
Patient Report
7 R2 G3 J/ T' YA 16-month-old white child was referred to the
0 {9 \' z: Y4 W. x7 ^7 xendocrine clinic by his pediatrician with the concern% e& l; d7 I+ `; y
of early sexual development. His mother noticed
9 r/ g/ |' ^, `0 @* T/ Y4 Ulight colored pubic hair development when he was
4 y8 I# ^3 {' R, q# v2 |From the 1Division of Pediatric Endocrinology, 2University of2 u& E" K# d& J
South Alabama Medical Center, Mobile, Alabama.
0 f  d  |0 z3 a5 o# i: y7 P6 \6 fAddress correspondence to: Samar K. Bhowmick, MD, FACE,. C. b3 f: ^" C
Professor of Pediatrics, University of South Alabama, College of+ r- t, Z  M0 j2 }3 O' ~. ]
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;+ S' L% {" o# g/ V, T5 C4 T; c' r
e-mail: [email protected].5 D: T: ~) z: F* K
about 6 to 7 months old, which progressively became
$ N3 v5 B6 p4 N5 f3 f/ Adarker. She was also concerned about the enlarge-, A+ {& Q8 {5 r+ c! _* b* f' ~
ment of his penis and frequent erections. The child
' H) E0 F6 |4 u% T2 {% j7 x# |was the product of a full-term normal delivery, with2 V9 d! Z% m2 }1 D8 ~
a birth weight of 7 lb 14 oz, and birth length of
0 u/ d: O: e) l% S20 inches. He was breast-fed throughout the first year
0 o4 J7 _: ?- ^of life and was still receiving breast milk along with
9 z8 ]% K3 B4 F8 w1 z' [solid food. He had no hospitalizations or surgery,3 B; {8 d9 r0 B9 a' P0 g6 X- }) ~
and his psychosocial and psychomotor development- d$ |" @3 |9 U) _. r
was age appropriate.
- w" J/ N& m9 rThe family history was remarkable for the father,$ i0 i9 K: E8 ]" A" R4 Q7 [# J
who was diagnosed with hypothyroidism at age 16,7 o! B, H( K6 o
which was treated with thyroxine. The father’s* B0 l6 p# e) `3 ~
height was 6 feet, and he went through a somewhat
- ]0 h  ~/ C3 {5 P8 E, D; xearly puberty and had stopped growing by age 14.3 F' }* P. c+ L9 S4 [. Q
The father denied taking any other medication. The
8 _$ `* c  c& Uchild’s mother was in good health. Her menarche
. g4 s4 J" f" x& R" y$ swas at 11 years of age, and her height was at 5 feet* {6 z: ?. k# p4 @) u1 ]" m# s" t
5 inches. There was no other family history of pre-
3 O# ^& k- b3 b4 O, z( zcocious sexual development in the first-degree rela-$ l2 L  J7 r6 m/ k1 t
tives. There were no siblings.
$ s3 {0 D; }' O8 N2 T+ k5 YPhysical Examination
& d$ ]2 }) n6 I$ V+ IThe physical examination revealed a very active,
; ?& W% l% }5 i7 gplayful, and healthy boy. The vital signs documented( @* Z; N7 E3 b# y) a# b( w
a blood pressure of 85/50 mm Hg, his length was3 e5 J2 `6 s& X1 M: b
90 cm (>97th percentile), and his weight was 14.4 kg$ m; o# |& o7 Z3 a" Q; |0 m8 r
(also >97th percentile). The observed yearly growth' A0 ]0 X- _) _/ v0 r  O
velocity was 30 cm (12 inches). The examination of8 r+ h# ]( U0 l& M* q) Z/ `9 Y
the neck revealed no thyroid enlargement.! m. ~* }6 ?; S
The genitourinary examination was remarkable for
! A' P( a, {1 V" M4 ]3 F/ ?  _6 u/ _enlargement of the penis, with a stretched length of+ A% R& @( v  q
8 cm and a width of 2 cm. The glans penis was very well* z# Y; d& X% A& K! v
developed. The pubic hair was Tanner II, mostly around3 f# m( @) W% I' E: p" T
540! S. z0 C' b* S0 P( ]' D9 W; _
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
; Y" H2 G. q2 Lthe base of the phallus and was dark and curled. The6 j0 m' |+ D8 z
testicular volume was prepubertal at 2 mL each.
0 I  [. |' b% u( B/ W  UThe skin was moist and smooth and somewhat5 [6 A7 l' s* Q: o& {
oily. No axillary hair was noted. There were no
! f/ V5 m9 Z, {; U4 babnormal skin pigmentations or café-au-lait spots.) R8 y, ]' C- z; U* u
Neurologic evaluation showed deep tendon reflex 2+9 V# X' B% L# n/ K/ L7 v
bilateral and symmetrical. There was no suggestion
: p" h: j, Y( i, }of papilledema.
# V( v3 b8 W  ^# }) n" D) hLaboratory Evaluation
& i& ?+ }2 z# P) v3 D, e/ JThe bone age was consistent with 28 months by! y/ f+ {' p  y
using the standard of Greulich and Pyle at a chrono-. c( U+ X; w/ W8 z& n
logic age of 16 months (advanced).5 Chromosomal/ u) s  R8 r0 P: ^6 y
karyotype was 46XY. The thyroid function test4 o* y& d# V4 s- s0 N8 H/ R
showed a free T4 of 1.69 ng/dL, and thyroid stimu-7 X/ z4 O0 s" J$ J6 ^
lating hormone level was 1.3 µIU/mL (both normal).2 g3 Q, Z0 [+ P, r" v$ s
The concentrations of serum electrolytes, blood
6 C  S1 f- g. f" r3 D4 Zurea nitrogen, creatinine, and calcium all were
7 n2 v! `0 ~: t7 X* Owithin normal range for his age. The concentration
+ q! G( T7 Z/ V( W$ w4 Pof serum 17-hydroxyprogesterone was 16 ng/dL. t, z0 b# n- o' U. a  K% u
(normal, 3 to 90 ng/dL), androstenedione was 20' y" t2 f0 R+ z6 p
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-3 i4 c- m4 D/ ^
terone was 38 ng/dL (normal, 50 to 760 ng/dL),4 ]2 E" p+ e; ^9 p
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
+ l  a6 g* ?. [9 O% ~49ng/dL), 11-desoxycortisol (specific compound S)
: F% T; H) g( W4 e8 q* P2 Bwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-' u" k8 j& J$ \  _6 s0 n2 m
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
1 a! ~9 r9 l# K& a0 Rtestosterone was 60 ng/dL (normal <3 to 10 ng/dL),! [* d1 r3 @0 Y+ v. O$ [
and β-human chorionic gonadotropin was less than
/ k% s8 H2 \" ?( p3 m* P9 ]/ e3 V5 mIU/mL (normal <5 mIU/mL). Serum follicular
* _, L6 K! @' c6 l. ^9 ystimulating hormone and leuteinizing hormone
3 d: z& v# H7 D( u/ ]8 lconcentrations were less than 0.05 mIU/mL
5 s- z6 b/ }, d2 U. N/ m(prepubertal).
# n. e) k4 T5 Y: J/ I# dThe parents were notified about the laboratory  i) K8 n: G4 _8 p3 _$ F
results and were informed that all of the tests were' ?2 i& `- x7 V' D
normal except the testosterone level was high. The6 k2 D- W5 K4 g, `
follow-up visit was arranged within a few weeks to" l) R3 L9 b! t: |4 k+ {
obtain testicular and abdominal sonograms; how-
5 F4 }( s. Q# dever, the family did not return for 4 months.& }, L4 q4 |: q1 i9 d3 c
Physical examination at this time revealed that the6 U1 U- Q9 Y0 H
child had grown 2.5 cm in 4 months and had gained9 w" w5 z" O% K
2 kg of weight. Physical examination remained# b: x5 ~. K% q( U' I
unchanged. Surprisingly, the pubic hair almost com-, N5 v0 ?* v( }2 S2 ^: G( X
pletely disappeared except for a few vellous hairs at$ X4 C# E" L7 ?. ^$ H9 U2 o6 E
the base of the phallus. Testicular volume was still 2& d& ^" P( B0 Q: ]" C* U) o
mL, and the size of the penis remained unchanged.2 f. G  q8 w0 i! k" l
The mother also said that the boy was no longer hav-! j! }- w) h! ~0 u# W
ing frequent erections.
$ m9 X! g9 H! R: JBoth parents were again questioned about use of
8 W- Y! K( s; f; N: Q8 s8 A% N4 hany ointment/creams that they may have applied to; V7 {: p+ Z0 L! z4 @
the child’s skin. This time the father admitted the
( A0 u( K6 x3 c$ b$ XTopical Testosterone Exposure / Bhowmick et al 541
& c7 ^" }5 b: Wuse of testosterone gel twice daily that he was apply-
3 \5 e9 c+ c9 U0 o5 f" B( ting over his own shoulders, chest, and back area for
! c" Y0 c( y- }a year. The father also revealed he was embarrassed5 b$ Z7 B* z3 x6 Y
to disclose that he was using a testosterone gel pre-
7 ^' s3 A# t' _2 @# f4 O! kscribed by his family physician for decreased libido% g) s# n8 V/ v
secondary to depression.
; M% L; R0 _) S! L) BThe child slept in the same bed with parents.
2 N3 w# T+ @6 r( fThe father would hug the baby and hold him on his6 S6 n, ]' k$ v0 w" C/ Y: ?
chest for a considerable period of time, causing sig-
: c3 [( F. o( A/ W6 {$ Rnificant bare skin contact between baby and father.! D2 k9 p/ i9 {# R9 i
The father also admitted that after the phone call,# ?0 n9 g4 h4 z
when he learned the testosterone level in the baby$ o" ?# i  D0 \6 H! o% ^
was high, he then read the product information- M3 L: h  X/ ]% D* N; w! Y
packet and concluded that it was most likely the rea-9 G- E& G. R9 A( r5 |' E- R3 P
son for the child’s virilization. At that time, they
" y( }# ~) p, @3 t( Z6 F. C7 i3 cdecided to put the baby in a separate bed, and the8 H5 [) h) T8 |
father was not hugging him with bare skin and had9 ?8 X, f" r/ q" y
been using protective clothing. A repeat testosterone
- w5 l) W9 T& c0 m" i' Z( Ktest was ordered, but the family did not go to the4 \3 v  F) U1 I' |" v/ Q8 F9 m7 ]
laboratory to obtain the test.
% Q1 }! _! p0 [, \. SDiscussion
+ D# H( W: t# s- o$ lPrecocious puberty in boys is defined as secondary
) @9 y6 l9 c8 b' Gsexual development before 9 years of age.1,4
, W' ]8 @' }% O& d2 [Precocious puberty is termed as central (true) when
7 n2 C0 S3 Q6 v9 F! \it is caused by the premature activation of hypo-" u$ [" Z: u! @+ J
thalamic pituitary gonadal axis. CPP is more com-
1 r% U# U! X- S9 s' C6 {6 c+ H* Bmon in girls than in boys.1,3 Most boys with CPP+ H% b/ w, s" t9 \7 l
may have a central nervous system lesion that is
5 R4 C6 }7 v5 r, E0 d7 |! Jresponsible for the early activation of the hypothal-
. g" ]! b3 {5 X& M$ G5 |8 aamic pituitary gonadal axis.1-3 Thus, greater empha-
% h2 F7 d3 R) M5 B7 Y( ?5 lsis has been given to neuroradiologic imaging in% I# Z  i) o- ^2 K7 T3 r' }
boys with precocious puberty. In addition to viril-0 r9 G/ X$ Q6 F) V& u
ization, the clinical hallmark of CPP is the symmet-
$ k7 l) N* ]* ^! ]8 U" l4 ]7 }rical testicular growth secondary to stimulation by$ F! c4 q( `/ |3 K
gonadotropins.1,3' D$ c! R3 U! s: d/ n/ v, h
Gonadotropin-independent peripheral preco-& m; ^1 k" z- i
cious puberty in boys also results from inappropriate
- `! j" {3 G' E% F$ ~androgenic stimulation from either endogenous or8 `5 i* g- }* o8 I0 |" D& R
exogenous sources, nonpituitary gonadotropin stim-) h- o8 {( q2 d: ^
ulation, and rare activating mutations.3 Virilizing, {$ Q+ i, @* [8 J; g
congenital adrenal hyperplasia producing excessive3 f: D7 I9 l  D; G6 h
adrenal androgens is a common cause of precocious( q% S& p$ F* I4 E# x! H) A: s2 T' M
puberty in boys.3,4
0 y" {* o' z8 ]The most common form of congenital adrenal
$ b' I1 c8 p" f$ F( p# P( jhyperplasia is the 21-hydroxylase enzyme deficiency.7 A9 c& C! S6 E2 a$ n5 e0 i. q; _& k
The 11-β hydroxylase deficiency may also result in
9 V5 o0 _( e1 _, n3 c4 |5 [excessive adrenal androgen production, and rarely,
/ Q* c3 ~  i2 ^  }$ u% y& y1 x# S' }an adrenal tumor may also cause adrenal androgen. \2 x$ R" I! ~+ R
excess.1,37 B" [! V( v' u% E
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
  Q" \4 c) H3 N5 B! f542 Clinical Pediatrics / Vol. 46, No. 6, July 20073 x! n) {( J4 U" B. w$ e* D: P
A unique entity of male-limited gonadotropin-
9 S! A$ z' p/ f9 ~9 _3 @% `independent precocious puberty, which is also known
* _7 f. y, E# W! [( \) U3 y* J/ D8 _as testotoxicosis, may cause precocious puberty at a( _* F" U  j$ v. z) R
very young age. The physical findings in these boys/ M! n5 L9 p6 m. C' L' z/ q
with this disorder are full pubertal development," g  _- @5 a/ w; d8 q  ?( l
including bilateral testicular growth, similar to boys
8 H6 N" b: Y# b& C# ]) s+ x, Uwith CPP. The gonadotropin levels in this disorder
( ^* t1 D  W! `0 @3 Vare suppressed to prepubertal levels and do not show9 L, H5 i, J9 z* q3 S7 @8 _9 G
pubertal response of gonadotropin after gonadotropin-
3 {6 H6 Q8 }: b9 V$ O+ h- ^, F" {8 dreleasing hormone stimulation. This is a sex-linked
1 C$ [  Q% N8 u( j' hautosomal dominant disorder that affects only
7 ?9 S; j& c: g9 e1 H0 d* `males; therefore, other male members of the family$ X5 b. h; X  m3 I3 j7 U5 @
may have similar precocious puberty.3  K+ z. |( Z7 `2 P! F1 `: y6 Q
In our patient, physical examination was incon-  \- T$ o6 @+ a
sistent with true precocious puberty since his testi-
! f3 J* v6 w# a$ j4 K  E  p% Gcles were prepubertal in size. However, testotoxicosis. V. ?0 d/ r) Z; P5 }
was in the differential diagnosis because his father
4 c2 p7 ~7 z- f3 e- h. Hstarted puberty somewhat early, and occasionally,
& l: ?% n7 v. }1 p  htesticular enlargement is not that evident in the7 V8 l) k9 w- d9 S! f
beginning of this process.1 In the absence of a neg-0 V2 K, L# ~4 u6 Y! c
ative initial history of androgen exposure, our- q5 p1 s, T$ z2 e) y4 w) A
biggest concern was virilizing adrenal hyperplasia,/ l3 X7 F9 k. Z2 b2 C
either 21-hydroxylase deficiency or 11-β hydroxylase
( u. z1 S: e: Ldeficiency. Those diagnoses were excluded by find-: {  S7 L+ E$ _! A1 P) Y( Q
ing the normal level of adrenal steroids.: G4 B/ E$ p4 n/ j" t
The diagnosis of exogenous androgens was strongly
6 z9 m- X. K+ ]6 O: }" Vsuspected in a follow-up visit after 4 months because7 [+ n7 l" K6 f! i6 C* q
the physical examination revealed the complete disap-
5 k2 F4 K7 [5 d$ X' S* n! P$ X# Kpearance of pubic hair, normal growth velocity, and2 c$ l. H' s# S2 I! a
decreased erections. The father admitted using a testos-
- [2 z' h. O* r" Lterone gel, which he concealed at first visit. He was
) n6 K2 d+ A2 Q! I" r! G8 I2 Cusing it rather frequently, twice a day. The Physicians’- P% U' f1 w, `! }8 ]9 E! e
Desk Reference, or package insert of this product, gel or
0 ?- x6 M) d5 k( b- G5 jcream, cautions about dermal testosterone transfer to& {% Q! r( ^5 N: E7 r# B
unprotected females through direct skin exposure.
- _: O" F/ F1 S, lSerum testosterone level was found to be 2 times the& V; f3 O4 v, Y5 g5 A
baseline value in those females who were exposed to
$ M" [( p' y( k" q7 `' ueven 15 minutes of direct skin contact with their male
  t3 i, q$ F' o& Qpartners.6 However, when a shirt covered the applica-* x5 c' v2 b) {9 O. m
tion site, this testosterone transfer was prevented.. z. Y  Z3 A/ l2 ]* J/ q8 Z
Our patient’s testosterone level was 60 ng/mL,) t# N1 x1 P7 e% o) v- b
which was clearly high. Some studies suggest that: @0 k5 F  S3 e
dermal conversion of testosterone to dihydrotestos-( H7 _0 q$ ?% s, s' u% x$ Q  Y
terone, which is a more potent metabolite, is more
( |  G/ v( ?3 Q% {2 eactive in young children exposed to testosterone; U8 R1 k% ], a- H5 i, c5 f# ?, F
exogenously7; however, we did not measure a dihy-1 H6 O+ [5 g! O
drotestosterone level in our patient. In addition to# q& F0 D: L' H+ Y4 g
virilization, exposure to exogenous testosterone in/ v7 G1 ?5 k. e+ k3 G$ q
children results in an increase in growth velocity and
+ w& X! t7 w% Iadvanced bone age, as seen in our patient.
/ ^2 }2 F/ }# @1 C% dThe long-term effect of androgen exposure during& ^# M; ?% }: N9 N+ X& H& D
early childhood on pubertal development and final% f6 i( |7 a% w4 t  _7 a6 p8 N
adult height are not fully known and always remain6 h+ c0 u3 w6 y( m8 U
a concern. Children treated with short-term testos-4 ?& g% G3 C& \* a9 E) B' E% l
terone injection or topical androgen may exhibit some
% ~7 H: d# O2 |acceleration of the skeletal maturation; however, after$ P% C+ k; L/ B1 e4 r6 o3 I9 E
cessation of treatment, the rate of bone maturation- b3 }. D) H  L7 n& J9 d
decelerates and gradually returns to normal.8,9# M% u1 R8 T5 o4 A, D
There are conflicting reports and controversy
* R# ], v. }7 v/ v. m4 \1 oover the effect of early androgen exposure on adult5 ]/ d" ]) p  z5 t8 e$ c. C
penile length.10,11 Some reports suggest subnormal4 b; i* k: b  p) U  x7 [) N5 U
adult penile length, apparently because of downreg-
2 C% s/ P5 z2 X( L9 Vulation of androgen receptor number.10,12 However,3 m1 g7 h0 \( ?" G6 U5 F
Sutherland et al13 did not find a correlation between' ^* _* E" M+ N) z5 K: I0 Z
childhood testosterone exposure and reduced adult8 a  |  g# A3 R# j+ m
penile length in clinical studies.1 W8 Q  |9 D" ?& Q( K
Nonetheless, we do not believe our patient is( z# h$ q. {/ l7 |: |. V
going to experience any of the untoward effects from8 Q  ?; n$ \; O# d4 `" m
testosterone exposure as mentioned earlier because( S# u: i* h# j3 Z, S
the exposure was not for a prolonged period of time./ ~* U  |8 d( e6 E% Z; C: Q+ k
Although the bone age was advanced at the time of, r7 b& A; s. C7 p3 ~
diagnosis, the child had a normal growth velocity at
- g  T- q/ W" L" @) Gthe follow-up visit. It is hoped that his final adult
. R/ e3 G- p' aheight will not be affected.
; e# c2 {$ s% ^( |# wAlthough rarely reported, the widespread avail-
# d9 r* T% a8 [! T( _ability of androgen products in our society may
! ?9 B" P6 g6 m9 _. ]* E: Tindeed cause more virilization in male or female. o3 g1 f6 W0 n/ N; @' M6 f$ J  L
children than one would realize. Exposure to andro-
7 r2 b! X% s, agen products must be considered and specific ques-
/ k4 y* s4 |7 `8 \+ Mtioning about the use of a testosterone product or
/ C1 H0 P0 Z2 V" ~1 _5 Hgel should be asked of the family members during
6 p4 V. |# T& Y5 Wthe evaluation of any children who present with vir-9 \8 R$ X( H; |6 ^  n4 Z' h; V& [
ilization or peripheral precocious puberty. The diag-# {4 v7 z3 R( V/ L8 P8 \! u  u! @
nosis can be established by just a few tests and by
" k/ F- M" @1 p  M& happropriate history. The inability to obtain such a
1 w/ c" K' M1 I, U& Rhistory, or failure to ask the specific questions, may
- z- O4 i& w, V0 sresult in extensive, unnecessary, and expensive
+ ^- F. ^4 L% n/ t' `. y5 Vinvestigation. The primary care physician should be% ]9 X0 V9 o9 W( u' ]/ e
aware of this fact, because most of these children
" |, E' G; S& D6 J+ R+ Cmay initially present in their practice. The Physicians’
& h2 S' s. ?4 @, }Desk Reference and package insert should also put a9 j; i" b# S1 t( F
warning about the virilizing effect on a male or
8 F- _# y0 e1 J# ~- O1 B3 efemale child who might come in contact with some-! G( x6 T8 f9 r4 ?  ~- Q
one using any of these products.
9 E& H0 R1 h% ~References. l) c0 w1 m) H8 I
1. Styne DM. The testes: disorder of sexual differentiation, z# B, m+ B$ Q9 F) j* v
and puberty in the male. In: Sperling MA, ed. Pediatric
' v; E' F1 e" d3 [+ o/ b7 ]4 `$ j& aEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;# w) K0 S0 i5 \; p. C
2002: 565-628.; |7 W9 z6 Z, }( U6 [% T3 a; i
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious) T8 a1 ~3 C2 Y& o( R
puberty in children with tumours of the suprasellar pineal
發表於 2025-1-4 03:27:02 | 顯示全部樓層
Sexual Precocity in a 16-Month-Old
- B; m7 d; }2 B# EBoy Induced by Indirect Topical# m7 X4 Y) }( }( j3 ^% R# \
Exposure to Testosterone
+ g  I5 o# Q! o: ?4 F: kSamar K. Bhowmick, MD, FACE,1 Tracy Ricke, MD,2
; F% H( ~3 [2 J( Y' N  Uand Kenneth R. Rettig, MD1
1 L6 J# m! n1 x( a+ s# ?Clinical Pediatrics
) ~" t4 _+ _0 t4 F; g+ aVolume 46 Number 6
) M' J- W; Y+ [* a& _0 d2 {July 2007 540-543
( R3 j$ q- ^4 G/ Q4 w/ }* p4 M© 2007 Sage Publications
! I, ?) E' ^) }8 M10.1177/0009922806296651
+ _( z7 r7 B6 c% n- ]5 ghttp://clp.sagepub.com$ h2 u9 m4 u9 N
hosted at* t1 |8 ?* _, h7 U+ m# e
http://online.sagepub.com5 w3 h6 |2 H2 [) ^
Precocious puberty in boys, central or peripheral,: Y5 p$ L/ ~5 M8 I: `$ ~
is a significant concern for physicians. Central5 a& Y, ?, S! l
precocious puberty (CPP), which is mediated$ l6 j! o" A; a6 P1 ~6 _' M
through the hypothalamic pituitary gonadal axis, has
/ E% |' P. p* t! Z8 O- Ya higher incidence of organic central nervous system3 S+ \. G* Y$ m1 S6 V$ ~# y) J
lesions in boys.1,2 Virilization in boys, as manifested- L5 P% C, t# |0 E+ Z5 S5 h4 Q* z
by enlargement of the penis, development of pubic3 X9 N  a' R. u  a3 `, a
hair, and facial acne without enlargement of testi-  b8 I$ |' u, o0 G  ?8 x
cles, suggests peripheral or pseudopuberty.1-3 We' F) g8 I  ^) T* @/ V
report a 16-month-old boy who presented with the
- U3 i) N: Q* b$ |enlargement of the phallus and pubic hair develop-! w. I' i- O. _$ x" ]; D
ment without testicular enlargement, which was due
0 v# |2 z5 W' o* k+ \8 \to the unintentional exposure to androgen gel used by
6 i0 Z% B5 P9 R; lthe father. The family initially concealed this infor-5 A) z( ~$ H: c7 w  A0 y
mation, resulting in an extensive work-up for this. @$ o6 D" t, h" M6 N  n+ G3 p
child. Given the widespread and easy availability of
6 E! E1 t: q: l- A9 I$ ?testosterone gel and cream, we believe this is proba-8 \5 V" f* p2 \1 }: }
bly more common than the rare case report in the
' p2 A0 q" h! m; Dliterature.44 W9 `3 X+ K" n! W4 V+ r: {5 ~
Patient Report4 p" H0 {7 X3 Y/ E3 E
A 16-month-old white child was referred to the
: P  p; C: _4 n& {( k  `endocrine clinic by his pediatrician with the concern" D$ `" ~7 a' o* x2 ~
of early sexual development. His mother noticed
9 u* S5 p, Z# W+ ilight colored pubic hair development when he was
; I) `6 L% P6 ]( P# _From the 1Division of Pediatric Endocrinology, 2University of* G- Q, V" ^+ o5 c
South Alabama Medical Center, Mobile, Alabama.3 d. q  [# o/ G* T4 p
Address correspondence to: Samar K. Bhowmick, MD, FACE,1 u( D& |9 J: G7 D4 w# i1 U
Professor of Pediatrics, University of South Alabama, College of
) b9 L2 X9 `) \' gMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;  c% }: Q& l2 x  r7 F
e-mail: [email protected].  k2 ], x3 T. t7 f3 p0 ?7 |6 B
about 6 to 7 months old, which progressively became( J" |3 z/ s. y! _- \3 l2 F! t3 G
darker. She was also concerned about the enlarge-' y2 j" A6 u0 f
ment of his penis and frequent erections. The child: @) t. o( [( [/ E
was the product of a full-term normal delivery, with
4 ?. |$ r2 [$ }! ~- d0 za birth weight of 7 lb 14 oz, and birth length of" b0 f, y- l+ Z) i+ Q2 ?
20 inches. He was breast-fed throughout the first year
1 b7 ?9 x& W5 V0 E- ]  t- g* m! d3 Lof life and was still receiving breast milk along with
6 b2 o; {4 T  p! Esolid food. He had no hospitalizations or surgery,8 ?2 |6 Y# H9 v1 E/ N) ~. P
and his psychosocial and psychomotor development5 ~" Q$ s# O% U
was age appropriate.0 D2 M) r& O! d& s
The family history was remarkable for the father,
. |5 L7 _/ f) e8 W/ |, twho was diagnosed with hypothyroidism at age 16,* ]/ V/ I( v( }8 _# e  y3 i
which was treated with thyroxine. The father’s
# `: U0 P1 n% R' Oheight was 6 feet, and he went through a somewhat
" P6 b% d7 o* A. i' D  fearly puberty and had stopped growing by age 14.8 j& |0 B% e( x* X! u
The father denied taking any other medication. The, S" `3 P* T# L% d1 p
child’s mother was in good health. Her menarche
0 P1 \5 `, Z8 c9 z  ~0 M# ^. c  swas at 11 years of age, and her height was at 5 feet
6 L' g$ ~" S5 {* {# D5 inches. There was no other family history of pre-9 b' v. b- E# x" a; b7 w
cocious sexual development in the first-degree rela-/ c" a( W: L9 O8 l/ s, C% [
tives. There were no siblings.
) r* }: \; g0 ]. zPhysical Examination
4 k/ d/ s% B0 H" W7 |( O# XThe physical examination revealed a very active,
2 m7 w7 d: b; ~0 v- v7 P( i6 G, s& Tplayful, and healthy boy. The vital signs documented/ x0 P; S; N7 X3 [+ N+ e. o5 r/ N3 ]
a blood pressure of 85/50 mm Hg, his length was, _+ t$ X7 a+ n& |8 w4 ~! p
90 cm (>97th percentile), and his weight was 14.4 kg
2 |+ m4 J( X% d! _(also >97th percentile). The observed yearly growth* j3 m$ y5 G$ e4 v% i, O! O
velocity was 30 cm (12 inches). The examination of
4 m" @1 l3 C. Y( Jthe neck revealed no thyroid enlargement.4 i+ o6 O" K3 ?/ d$ j8 W" A: {
The genitourinary examination was remarkable for  A- H' o6 d" o* D* I/ e! e
enlargement of the penis, with a stretched length of
/ a3 Q7 P% l" C1 Q# P8 cm and a width of 2 cm. The glans penis was very well
& \  g' h$ S2 g" P6 k- J0 Ddeveloped. The pubic hair was Tanner II, mostly around0 E9 ?! k/ l( y: Q; x
540
9 V4 _# r4 C5 c$ Z1 J, aat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
* D8 @8 `, h; b' ]2 r. Pthe base of the phallus and was dark and curled. The* Q% U2 f0 K6 T; h( D5 L4 \! g
testicular volume was prepubertal at 2 mL each.! q, V% |0 i: B" p" o& r3 t2 F
The skin was moist and smooth and somewhat
. j9 _* I* M% Q3 Y: moily. No axillary hair was noted. There were no. w( T6 x7 ^3 X% N
abnormal skin pigmentations or café-au-lait spots.4 k% @0 _0 y: ?! R6 i! }6 n
Neurologic evaluation showed deep tendon reflex 2+
$ a. d) O# L( ubilateral and symmetrical. There was no suggestion+ D; o) g* [8 u
of papilledema.# w8 D; J1 G8 u% ^8 n: A* |- ]
Laboratory Evaluation& Q4 U( ~7 v6 x3 k, r1 Q
The bone age was consistent with 28 months by
5 r  h1 D, j; k' d; ]8 o# Kusing the standard of Greulich and Pyle at a chrono-
0 E2 {: ~6 X6 [6 n4 ulogic age of 16 months (advanced).5 Chromosomal# e( m' A. Z2 b
karyotype was 46XY. The thyroid function test3 u, W5 _1 B: M% c
showed a free T4 of 1.69 ng/dL, and thyroid stimu-, X$ D; a: ~: o& ~. m' k
lating hormone level was 1.3 µIU/mL (both normal).
, y+ s" r0 P9 d- W0 D, p  LThe concentrations of serum electrolytes, blood: L$ l' `* J& Z2 l! w/ r9 k5 `
urea nitrogen, creatinine, and calcium all were4 X7 P& `( \2 [+ T% C* M
within normal range for his age. The concentration
( z4 Z9 d3 j, ?$ @% Gof serum 17-hydroxyprogesterone was 16 ng/dL
! g! i% _( L% X$ \(normal, 3 to 90 ng/dL), androstenedione was 20
- n7 X( V; c. e. v  [ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-" ~2 d! o+ ^+ e$ \. |6 P
terone was 38 ng/dL (normal, 50 to 760 ng/dL),
. C! c' U4 y8 f& Q- G+ o3 Adesoxycorticosterone was 4.3 ng/dL (normal, 7 to1 \2 L9 q5 [! F" {( R0 ^
49ng/dL), 11-desoxycortisol (specific compound S)* M# ?2 ]1 U; d) q( x
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
/ P$ U: `4 a; o* \8 T& a5 {tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
( m! ~  N2 s' E+ q2 p, H: `) e  Jtestosterone was 60 ng/dL (normal <3 to 10 ng/dL),
# A' [  a4 I. T1 h2 Rand β-human chorionic gonadotropin was less than
4 [9 Z7 W4 g& u0 c5 mIU/mL (normal <5 mIU/mL). Serum follicular) D  R; W% E2 f, {# w
stimulating hormone and leuteinizing hormone
  [" P5 ~; Z3 ?# V2 Sconcentrations were less than 0.05 mIU/mL$ [5 {) L5 }9 d5 D
(prepubertal).+ t, e7 {6 m* ~
The parents were notified about the laboratory; q" k3 D' K3 N, }  p
results and were informed that all of the tests were, d* F6 N- W0 W. m9 `  M
normal except the testosterone level was high. The
# S+ a: A2 w9 z! _follow-up visit was arranged within a few weeks to
6 X( ~# |4 T/ U/ `obtain testicular and abdominal sonograms; how-
' a1 ^* l7 f' A) k6 L3 w4 Y. eever, the family did not return for 4 months.- K3 S1 J" c7 j9 a/ B
Physical examination at this time revealed that the
$ N) U. w& X9 e3 uchild had grown 2.5 cm in 4 months and had gained0 x& \2 S" n0 z$ @4 l6 x3 u* i
2 kg of weight. Physical examination remained
4 b1 N! W! G: O! Wunchanged. Surprisingly, the pubic hair almost com-
- Y, G6 T/ G) F& d/ L0 bpletely disappeared except for a few vellous hairs at$ T0 r0 [& u+ V
the base of the phallus. Testicular volume was still 2: \, v. d1 O9 v8 Y) r8 T1 L" o
mL, and the size of the penis remained unchanged.) k' z( }* ^1 T/ J% e
The mother also said that the boy was no longer hav-
% f5 d9 @# v' S8 i$ Zing frequent erections.8 i1 k& w  C( P# i& j& W
Both parents were again questioned about use of
6 s4 b. _# ^' `0 u0 `" I' [any ointment/creams that they may have applied to# P% o+ @+ I0 a5 M. A9 o
the child’s skin. This time the father admitted the
! C2 I6 t6 M- V! t% S4 STopical Testosterone Exposure / Bhowmick et al 541
+ t4 J7 x1 E2 a) j/ r3 b. F' ^% ~use of testosterone gel twice daily that he was apply-
( _* w: w6 S& sing over his own shoulders, chest, and back area for
! s7 m: |5 q5 ~( I' Wa year. The father also revealed he was embarrassed5 R# M+ i3 P) Q  \: a# X
to disclose that he was using a testosterone gel pre-" c  E- m* K/ R  q6 k5 m
scribed by his family physician for decreased libido# x! l  ^6 M7 Q- m4 h
secondary to depression.) K# m  k0 q' \8 W  `. q
The child slept in the same bed with parents.* l$ l( \8 j9 O+ w6 @
The father would hug the baby and hold him on his
$ z* x8 u  m; S& K* m  I1 c: q' zchest for a considerable period of time, causing sig-
$ o& m- \# l" W: i4 `2 \nificant bare skin contact between baby and father.
# ?+ Z( d, ]2 m' c) Q! CThe father also admitted that after the phone call,
) A/ q" N- \9 l" w  `4 s1 f3 kwhen he learned the testosterone level in the baby4 d  f8 j1 Z, M. M, Y
was high, he then read the product information
0 J( z8 e. x0 Q, A* d3 Apacket and concluded that it was most likely the rea-' T. }' A- W! c; g7 @$ {! K
son for the child’s virilization. At that time, they
( j/ B: z2 c9 J9 Odecided to put the baby in a separate bed, and the
$ B2 q% j/ `7 a: Jfather was not hugging him with bare skin and had# P# G* M" p% `5 ?* T# C/ r7 i
been using protective clothing. A repeat testosterone
4 Z/ W. O& [6 T4 j4 dtest was ordered, but the family did not go to the
: t% z) H! m* U  t+ N5 Zlaboratory to obtain the test.! k% R1 n) b. E+ _+ H; ^
Discussion
5 g- @: @1 V7 |0 V* Q! k) yPrecocious puberty in boys is defined as secondary
) k  h' W* E! k; e" t/ bsexual development before 9 years of age.1,4% x  x& Z5 K. M% _
Precocious puberty is termed as central (true) when4 j( |7 p: g' U
it is caused by the premature activation of hypo-
2 m: E- u; d$ q/ X$ a6 \. Y. Fthalamic pituitary gonadal axis. CPP is more com-  Y+ c' l, O) a7 g
mon in girls than in boys.1,3 Most boys with CPP
' V3 J, e# P) a# v" Vmay have a central nervous system lesion that is' j. h: w7 m4 Q. D: ^
responsible for the early activation of the hypothal-
! l8 b- l+ N! }  u: _; G- T( eamic pituitary gonadal axis.1-3 Thus, greater empha-- H0 C) j( B# Y0 u* P& h
sis has been given to neuroradiologic imaging in- O- `5 \7 J( @* x$ W$ R
boys with precocious puberty. In addition to viril-
/ T0 p% V" I$ C+ bization, the clinical hallmark of CPP is the symmet-
3 V: Q( L" D& u% O4 brical testicular growth secondary to stimulation by- `* I- x, y1 D8 M) B1 H& J
gonadotropins.1,3# ^7 f8 I  O8 c( H
Gonadotropin-independent peripheral preco-/ J* h7 j6 D0 i  }0 O" N7 \
cious puberty in boys also results from inappropriate
5 U3 {6 _" {6 I- z3 V) b3 i. Nandrogenic stimulation from either endogenous or0 V9 C5 S% H3 N3 ^1 k1 n* V
exogenous sources, nonpituitary gonadotropin stim-
! k' r+ ?# O6 ^7 x: lulation, and rare activating mutations.3 Virilizing) \- u2 v! S1 W+ ^# c
congenital adrenal hyperplasia producing excessive
+ C% F5 A( q/ g6 M9 j5 M. q% p  eadrenal androgens is a common cause of precocious) l- L% U& {; T9 N5 l3 d2 O' ?. j
puberty in boys.3,41 ~; w# j7 D/ r
The most common form of congenital adrenal
8 `. H( j: S+ E) x. yhyperplasia is the 21-hydroxylase enzyme deficiency.
+ Z0 m0 n: x# M1 [& h5 h/ dThe 11-β hydroxylase deficiency may also result in
+ V% h5 Y9 E# b1 t  N& A9 h# V2 q# j) pexcessive adrenal androgen production, and rarely,
! j5 P$ k* {( o6 Man adrenal tumor may also cause adrenal androgen7 |9 k2 w% @4 c  D
excess.1,36 k) t/ @) [8 D5 A9 S5 y4 j) S
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from# N% {% I, n( |* T0 h" M1 A& L
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
- s5 K2 i  @8 ]+ W6 d+ B2 `A unique entity of male-limited gonadotropin-
! q4 ^- b. v4 ^0 ]! _4 ?& B- qindependent precocious puberty, which is also known- S- m0 a4 V3 K* J& C
as testotoxicosis, may cause precocious puberty at a! E: b- }; E& x4 v; M
very young age. The physical findings in these boys; ~* F1 a8 d8 b* h
with this disorder are full pubertal development,
6 s. }! S& d9 Z* X+ uincluding bilateral testicular growth, similar to boys
) M. d( ]' @; uwith CPP. The gonadotropin levels in this disorder3 L: T9 D3 J" b' Z
are suppressed to prepubertal levels and do not show/ [3 ]* O* [9 p% j
pubertal response of gonadotropin after gonadotropin-& n( Z# o6 ~2 \/ h; P0 Z
releasing hormone stimulation. This is a sex-linked" g# ]8 a+ ~( v- u3 B
autosomal dominant disorder that affects only
- N1 \  i. s+ ]' t/ _males; therefore, other male members of the family
- g) a3 F+ j% v5 \may have similar precocious puberty.3% Y" k- P' {4 E: @( x% U1 ~+ i+ w
In our patient, physical examination was incon-
: I" _* x0 z, ~! V$ D' psistent with true precocious puberty since his testi-
+ ^! H9 ]1 M. B' Z$ B- X9 ~cles were prepubertal in size. However, testotoxicosis
" z9 w' ^. g& D8 H) Lwas in the differential diagnosis because his father
/ |9 G2 D' j4 G: Mstarted puberty somewhat early, and occasionally,; A3 w9 T$ A4 R1 V8 r7 @
testicular enlargement is not that evident in the0 }" @- \/ T8 r' U% B" O2 S! {
beginning of this process.1 In the absence of a neg-7 z5 \4 B# R. @/ O4 h
ative initial history of androgen exposure, our
' m6 |2 f  x$ cbiggest concern was virilizing adrenal hyperplasia,
! G' J( J9 e% l+ E$ c$ o+ Qeither 21-hydroxylase deficiency or 11-β hydroxylase
/ l. @0 k5 M" @7 {. N5 vdeficiency. Those diagnoses were excluded by find-* [) n0 i8 W) g( G. s' l2 [7 {
ing the normal level of adrenal steroids.1 ~# P; D( P. U3 T9 T- |7 F
The diagnosis of exogenous androgens was strongly; U  i& r* L. j& R6 D
suspected in a follow-up visit after 4 months because: H* S+ r$ x. z$ U* Y9 _3 [2 b$ e6 Q, K
the physical examination revealed the complete disap-; y7 p) ], U' n, x" k% _% U2 ~) M2 R
pearance of pubic hair, normal growth velocity, and: C# j$ x+ H, B, }" p; H; c
decreased erections. The father admitted using a testos-
+ e' M( |% ?) Z0 n. ]% k: _) R1 Dterone gel, which he concealed at first visit. He was* A( D# r6 Y9 F6 U3 J- v1 a
using it rather frequently, twice a day. The Physicians’
0 \4 ]( u" J* z, F/ Y! ]Desk Reference, or package insert of this product, gel or
, \3 [( q# v; W( T! s: hcream, cautions about dermal testosterone transfer to
7 c4 [; U0 E. j& U, e- v7 x/ Junprotected females through direct skin exposure.8 A2 |4 h3 P# i- t  i; _% d
Serum testosterone level was found to be 2 times the
# }) y. n1 Z; d/ X2 j3 z1 Cbaseline value in those females who were exposed to% g# z+ G. r! q) j
even 15 minutes of direct skin contact with their male
" Z! C9 ~# @8 X1 `. npartners.6 However, when a shirt covered the applica-8 ]% J2 ^6 z9 ]9 k$ w5 K
tion site, this testosterone transfer was prevented.
7 l$ I/ X; P. A0 f9 tOur patient’s testosterone level was 60 ng/mL,  N7 \' ^- k7 X8 ^) ?
which was clearly high. Some studies suggest that  U$ F8 o9 J0 u6 A- ?
dermal conversion of testosterone to dihydrotestos-
0 P# Q5 n) e3 b" mterone, which is a more potent metabolite, is more, N. o( Y5 z7 G) G
active in young children exposed to testosterone( {3 O: Q) Z9 x, _
exogenously7; however, we did not measure a dihy-% k! C7 Q/ C, r& ^# S
drotestosterone level in our patient. In addition to
; y" K$ t7 R$ I* }4 L. bvirilization, exposure to exogenous testosterone in6 P6 }' ~- ?# j7 k
children results in an increase in growth velocity and4 E1 r) T% K( G9 ?' y2 q
advanced bone age, as seen in our patient.
: x" Y$ Z; ?) [, d4 \The long-term effect of androgen exposure during
6 i* {* [: ?# [& B( T: Q4 learly childhood on pubertal development and final
. a2 J( G: {6 madult height are not fully known and always remain3 n2 Z$ ^! P, z' |; N' ?& _: w
a concern. Children treated with short-term testos-
' ^& \; n/ c* q$ |* jterone injection or topical androgen may exhibit some! L8 s( F, Z2 i& V' T1 e& E/ h
acceleration of the skeletal maturation; however, after
' |% N/ X+ s6 G1 U' Scessation of treatment, the rate of bone maturation
( ?2 [, |5 A" f* }6 p% G- xdecelerates and gradually returns to normal.8,91 X! q% P( y+ M* ]& K
There are conflicting reports and controversy
3 c* b$ A8 A0 {( F+ N! L! lover the effect of early androgen exposure on adult
6 {# O( y0 B6 Kpenile length.10,11 Some reports suggest subnormal- n( @) z6 ^4 E! q2 x3 f  X
adult penile length, apparently because of downreg-$ a: k0 m, U/ J4 O
ulation of androgen receptor number.10,12 However,
; S0 {& C4 m$ pSutherland et al13 did not find a correlation between
& L1 ~0 s  {8 A4 u: pchildhood testosterone exposure and reduced adult, M& n% e/ L7 [
penile length in clinical studies./ _7 ]3 O# s0 a- y1 R! o
Nonetheless, we do not believe our patient is- R7 e& [0 U5 R2 y) G
going to experience any of the untoward effects from' @9 A( y9 f8 x) B
testosterone exposure as mentioned earlier because4 x$ D8 _2 A8 `0 A( K. M
the exposure was not for a prolonged period of time.
) x) b* S. ^. h6 O9 x! uAlthough the bone age was advanced at the time of* K& f- V3 K0 p7 J
diagnosis, the child had a normal growth velocity at- k9 G% R( {7 l4 g8 z4 p' Y
the follow-up visit. It is hoped that his final adult$ d5 C0 q$ \. x1 ~5 P
height will not be affected.. `  j7 |# P8 g- c8 f$ ]  \$ _
Although rarely reported, the widespread avail-
& a3 P& ?* j& A2 A4 `  O! Gability of androgen products in our society may
. @2 I8 F, o4 a, Sindeed cause more virilization in male or female* w; z" j0 L, P4 K& D
children than one would realize. Exposure to andro-
+ L  X1 i  F0 S' Agen products must be considered and specific ques-
4 i5 N+ U9 h: c3 I& N8 E$ Ttioning about the use of a testosterone product or8 Z% h" |, I* n, t/ T6 W
gel should be asked of the family members during
4 n2 I6 U7 j1 t7 S2 D) w. Ethe evaluation of any children who present with vir-
, B% C4 O& D* ]: q: |+ eilization or peripheral precocious puberty. The diag-. @1 \& ]. }+ z
nosis can be established by just a few tests and by
- d7 c) {: {6 v+ aappropriate history. The inability to obtain such a, O, L$ i" z& ~4 M
history, or failure to ask the specific questions, may  R4 f& D- N* `. Z* |- n- L
result in extensive, unnecessary, and expensive
4 Z# f$ |8 z" ]0 x, l& ginvestigation. The primary care physician should be( b" ?9 F, y8 ]
aware of this fact, because most of these children
) J8 E  V" e) m( L3 Kmay initially present in their practice. The Physicians’  t" d# B; |, f1 c' [
Desk Reference and package insert should also put a/ J, P- C" G! u% J
warning about the virilizing effect on a male or" Z; Q- |7 a5 o3 n9 H& E6 t
female child who might come in contact with some-
( P, P8 k0 Q2 c8 ^( bone using any of these products.  Z( r0 D- h& z. ~! y% l
References' J- R8 D# p, a# ]8 X9 [! h
1. Styne DM. The testes: disorder of sexual differentiation  ~8 i7 P. z  g6 _- m
and puberty in the male. In: Sperling MA, ed. Pediatric
* v3 A0 @1 G, C. J6 s3 ]Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;4 R& Q+ \  S; N! K( y- w7 Q0 u
2002: 565-628.3 ?4 c  O. h" b% L1 ^* C7 K
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious1 X7 L0 V8 Q: I5 b4 X
puberty in children with tumours of the suprasellar pineal
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女厕偷拍辅导班主任尿尿老师的逼很嫩还有一点
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精妙絕倫的精品,感謝啊!期待你更多更好的創作哦!
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