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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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