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Sexual Precocity in a 16-Month-Old" u& J; C4 N& O1 A$ K
Boy Induced by Indirect Topical1 H1 h% _9 T' N
Exposure to Testosterone
$ e1 V0 U2 g) M$ t! u( y3 ~, z& RSamar K. Bhowmick, MD, FACE,1 Tracy Ricke, MD,2
: V/ p0 i7 y" I5 c0 n- c" W4 [and Kenneth R. Rettig, MD1
& i) j/ A/ D% ?/ n! ~$ N+ J+ bClinical Pediatrics
8 `) B1 [0 G# k7 J; L# P2 nVolume 46 Number 6
& ?5 Y4 r- M9 {4 \# c, ZJuly 2007 540-543
- _# `8 g% U. d7 q+ `0 ]© 2007 Sage Publications
$ Z: a$ F( a" {10.1177/0009922806296651/ y9 j. A7 t, A* E. ?
http://clp.sagepub.com9 d) j( o A( r) W } T
hosted at
0 `1 M7 u* }; \! _0 V2 `! @# Dhttp://online.sagepub.com
" t( t8 J4 d# XPrecocious puberty in boys, central or peripheral,
2 X1 c& p0 I% j& kis a significant concern for physicians. Central5 r/ {- C. V9 z# H' `
precocious puberty (CPP), which is mediated& @2 d. ^9 D8 u1 ]
through the hypothalamic pituitary gonadal axis, has
) ~; B( F l+ B/ {a higher incidence of organic central nervous system
4 p- f% F/ m a9 nlesions in boys.1,2 Virilization in boys, as manifested7 ]4 o4 j6 N( t" Q$ u; v9 W
by enlargement of the penis, development of pubic
/ t: |2 H$ l. e( ^9 thair, and facial acne without enlargement of testi-% v: I, y& d# J5 O
cles, suggests peripheral or pseudopuberty.1-3 We4 U" s2 M0 I. O
report a 16-month-old boy who presented with the. P% {4 F m7 D+ L T8 M( q
enlargement of the phallus and pubic hair develop-' Z0 ~, h$ R: O8 A' @- D
ment without testicular enlargement, which was due5 r/ J2 e* W D: r1 v6 O
to the unintentional exposure to androgen gel used by
8 g3 r% x. u' A: I8 ^the father. The family initially concealed this infor-& n, ]0 G/ m+ { j9 V% L$ L6 z
mation, resulting in an extensive work-up for this2 q$ f+ t( Y7 Z* A2 ?5 y+ e
child. Given the widespread and easy availability of
! r* x1 X8 X( j+ dtestosterone gel and cream, we believe this is proba-
" `: ^/ N; N0 Z v, hbly more common than the rare case report in the
4 R" w! n5 F! D7 Pliterature.43 H5 r( {$ t: l# h
Patient Report
0 z; B- k+ U; U. F+ y" n. C/ j2 ]A 16-month-old white child was referred to the1 V; O; q$ f6 @, w9 s* S2 O; z5 e
endocrine clinic by his pediatrician with the concern
9 M `+ X: z6 n2 s7 n/ [of early sexual development. His mother noticed
$ t0 g/ |2 C# A. N7 dlight colored pubic hair development when he was
" b o: c7 t7 v$ Q# W; K$ SFrom the 1Division of Pediatric Endocrinology, 2University of
P4 e9 w q! W, c. M; ?9 dSouth Alabama Medical Center, Mobile, Alabama.
K8 C" a- Q4 Q/ b3 vAddress correspondence to: Samar K. Bhowmick, MD, FACE, O, x! h0 e8 ]6 v2 ~! B! s
Professor of Pediatrics, University of South Alabama, College of- o. ^+ ?! b7 j& N, f
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
" G( L4 C4 s& C0 h' n3 Qe-mail: [email protected].) h' g, B+ h* K K; A# E
about 6 to 7 months old, which progressively became$ h- r' G: Z; x2 f1 z- e- ^
darker. She was also concerned about the enlarge-
1 ^- O" n4 P2 P3 ]- cment of his penis and frequent erections. The child
: |6 T! I5 S+ r* q vwas the product of a full-term normal delivery, with
" U8 ?7 {' p, A$ G+ S8 V% Ya birth weight of 7 lb 14 oz, and birth length of
9 X7 ^5 [/ G" l, `1 E3 \2 m20 inches. He was breast-fed throughout the first year
/ P. C O: C1 |( b _3 ~ bof life and was still receiving breast milk along with( ~) ~: h. y6 f- _* K/ F
solid food. He had no hospitalizations or surgery,. b! ]" j# H+ ]8 `
and his psychosocial and psychomotor development1 ]5 l: y; E; G# L0 A" i
was age appropriate.
8 y( p& l- H& @+ sThe family history was remarkable for the father,
! m. F6 c- D! u* ^; F/ ]% \; M+ Ewho was diagnosed with hypothyroidism at age 16,
* u( j5 X8 L$ A$ Q$ pwhich was treated with thyroxine. The father’s
% j* ^+ u; C3 {height was 6 feet, and he went through a somewhat
# E& G$ X( I/ S! F) |" L8 `2 A. f" h; Pearly puberty and had stopped growing by age 14.
" e- [; N: P, b. ^" _; a) uThe father denied taking any other medication. The
1 i' I; B+ Y0 P" q1 Bchild’s mother was in good health. Her menarche
( [4 V- i0 t9 z& \was at 11 years of age, and her height was at 5 feet8 w& h- y4 ]; c/ }
5 inches. There was no other family history of pre-: m- x9 p# ^! Z. g4 ]" O' F, L* i
cocious sexual development in the first-degree rela-, ^/ G6 M! `- M; c2 I
tives. There were no siblings.
( F+ x% F f: N# z( N# ~$ b+ hPhysical Examination# }! c! a3 _ O& m- f& T! ^* X
The physical examination revealed a very active,4 k0 L4 v2 `( n
playful, and healthy boy. The vital signs documented
. X5 S- r$ R0 F" ta blood pressure of 85/50 mm Hg, his length was
4 C$ P' [/ C; V2 j90 cm (>97th percentile), and his weight was 14.4 kg" E( \9 }6 `* _/ Y4 e
(also >97th percentile). The observed yearly growth
3 C, o- o y' y! C7 Pvelocity was 30 cm (12 inches). The examination of
0 Q9 u4 h3 p5 {% hthe neck revealed no thyroid enlargement.
) v. U% _' j; J* ZThe genitourinary examination was remarkable for, h' x2 x# ~ b9 B/ {
enlargement of the penis, with a stretched length of* a4 E7 Q c( W# ]1 r+ k
8 cm and a width of 2 cm. The glans penis was very well
* n" \* C$ u+ T# U, Udeveloped. The pubic hair was Tanner II, mostly around {; n+ ~! G* r
540
+ b/ L6 Q! a* E- R; _, p) Mat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
) w6 d) j/ u" i6 zthe base of the phallus and was dark and curled. The
, y6 p' k$ h9 L% C: Atesticular volume was prepubertal at 2 mL each.. q+ \1 D7 I, v4 _* |! y( y2 j
The skin was moist and smooth and somewhat1 j: G! s9 Q+ c- X
oily. No axillary hair was noted. There were no; G3 U* i) w, m9 J* _# q
abnormal skin pigmentations or café-au-lait spots.
H: I7 v; U6 _Neurologic evaluation showed deep tendon reflex 2+, G9 w6 {# {& r" m- F
bilateral and symmetrical. There was no suggestion5 E, W# N: y+ K" p; K4 ^
of papilledema.% T+ h# G7 {# X' P. b
Laboratory Evaluation
$ Z' |1 [; M4 K d' u pThe bone age was consistent with 28 months by
% A" e5 ^8 b) ~* i. r K- \8 wusing the standard of Greulich and Pyle at a chrono-
: i, @( {' D6 E* {9 Zlogic age of 16 months (advanced).5 Chromosomal
4 x1 x9 P' {, L3 r- Pkaryotype was 46XY. The thyroid function test9 P2 s, @) q" H5 w" X) M4 ^
showed a free T4 of 1.69 ng/dL, and thyroid stimu-# m: q& S% T3 B( L( N; ^
lating hormone level was 1.3 µIU/mL (both normal).
+ Z) `! q+ m. o1 g0 [6 A& I+ ~The concentrations of serum electrolytes, blood4 }% A+ _7 J$ y/ m% q( v4 u
urea nitrogen, creatinine, and calcium all were
6 H: \: L0 F/ }+ I. [within normal range for his age. The concentration$ I, `/ r3 s( f4 O9 f6 Z# H! D
of serum 17-hydroxyprogesterone was 16 ng/dL
, y7 f+ F& g- x) \9 u* Z(normal, 3 to 90 ng/dL), androstenedione was 20
- C! f; ]* E1 ]( Z+ mng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
" H7 U4 n( L2 ?terone was 38 ng/dL (normal, 50 to 760 ng/dL),7 ~. w1 y" v( P
desoxycorticosterone was 4.3 ng/dL (normal, 7 to+ y0 ]% c6 I1 s. i: M
49ng/dL), 11-desoxycortisol (specific compound S)5 T! h" Y, L0 f
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-8 W$ \3 b, m6 \& u
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total4 u S/ P8 F0 r" } j) e* W) S
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
9 _6 p% G6 r9 z6 K5 s/ xand β-human chorionic gonadotropin was less than
( R* n: ~' w% w5 mIU/mL (normal <5 mIU/mL). Serum follicular$ `" ]; b1 ?/ c& b$ G
stimulating hormone and leuteinizing hormone
; r% H# b8 q- c# |concentrations were less than 0.05 mIU/mL7 c t+ X9 z; _
(prepubertal).6 u. B1 i& x. S5 ~7 q7 V
The parents were notified about the laboratory
( D2 {7 T) a/ ~& L- w1 Bresults and were informed that all of the tests were
$ Q( m- h! m5 m# f% \normal except the testosterone level was high. The
9 {# ~0 p* e+ l5 ~5 Qfollow-up visit was arranged within a few weeks to
, P6 ]: u* A. kobtain testicular and abdominal sonograms; how-3 x) M7 U0 t6 J# ]( w O
ever, the family did not return for 4 months.- z2 m* ?! B9 H9 x
Physical examination at this time revealed that the/ w. z6 N4 z& A0 e3 ]" U1 Z
child had grown 2.5 cm in 4 months and had gained
+ l1 d8 [4 {( k0 p8 _2 kg of weight. Physical examination remained
- I8 I/ L$ Z2 B6 Funchanged. Surprisingly, the pubic hair almost com-
, E4 K8 U$ J( C8 V2 qpletely disappeared except for a few vellous hairs at
2 w; E; }. w3 O0 B- S4 \the base of the phallus. Testicular volume was still 2$ G B* m! R0 y- n' p
mL, and the size of the penis remained unchanged.
0 b0 N6 ]/ `/ ^8 ]The mother also said that the boy was no longer hav-
9 ]% u, ~2 z f7 m# V# C" |ing frequent erections.' a' i4 `7 a" k1 [
Both parents were again questioned about use of
( i# o: C2 ^6 e2 |' e2 cany ointment/creams that they may have applied to( _+ l. T. D( Y# k
the child’s skin. This time the father admitted the
! g: F3 e! L+ v/ r VTopical Testosterone Exposure / Bhowmick et al 541, T o: T* t# a0 K
use of testosterone gel twice daily that he was apply-) y7 n$ I/ i" U7 y; [, L. {, a2 Z! ]) S
ing over his own shoulders, chest, and back area for, V+ T5 T! z/ @: {
a year. The father also revealed he was embarrassed
) K, Z( ~: r4 r( d M6 c# Uto disclose that he was using a testosterone gel pre- M+ ~8 m: @" R: K A# |8 s4 c
scribed by his family physician for decreased libido$ y: e# h1 ?% X1 a0 m4 `
secondary to depression.5 s: |% v" _% p# J# o7 ~$ O
The child slept in the same bed with parents.
: Y, M" ~9 M0 ^1 e: @The father would hug the baby and hold him on his
7 o; r+ L* z: B7 ~% `% Zchest for a considerable period of time, causing sig-% a/ N, z$ x: J1 D
nificant bare skin contact between baby and father.; n9 Z* {0 M. O9 V
The father also admitted that after the phone call,
& @& x8 d4 l4 g ?* h" I( hwhen he learned the testosterone level in the baby! }5 Q' o% u' }6 b* W* Q
was high, he then read the product information
0 q( z# r0 E1 t3 T, l' e. Tpacket and concluded that it was most likely the rea-2 O2 _& F% ^/ {; M9 s1 c: } x, \) ~
son for the child’s virilization. At that time, they- N+ c( s7 @! u1 Z; w6 J( N
decided to put the baby in a separate bed, and the2 R. z- E1 X* I Q/ ]3 e& ?3 X
father was not hugging him with bare skin and had
! }0 O b5 K' ~2 w6 Lbeen using protective clothing. A repeat testosterone3 G0 a* ~+ v/ |# c- n [* H8 Z
test was ordered, but the family did not go to the
; V4 I- {! u' o: ]' n, B2 z" ^laboratory to obtain the test.
' Q+ u0 i) A4 g# nDiscussion* o) m) y) w4 A) I9 b' R: ?& u5 p
Precocious puberty in boys is defined as secondary$ z. H3 ^' P- O! s' J+ B" k
sexual development before 9 years of age.1,4
5 {( a$ B& X i* z2 X) y/ ?8 @1 k7 V8 q" nPrecocious puberty is termed as central (true) when! f5 P5 W$ M' c% M4 \, x
it is caused by the premature activation of hypo-0 X _/ }9 A! C2 v$ o
thalamic pituitary gonadal axis. CPP is more com-* [" ^, p- n, [! M7 V H. ], t
mon in girls than in boys.1,3 Most boys with CPP
4 s# L1 Y! [ a/ _7 Z# u( N' q+ t" Emay have a central nervous system lesion that is6 h9 L6 Y* G. ^4 i& w) P6 d+ s
responsible for the early activation of the hypothal-
8 C) u$ n3 _. ^% c' j( R& aamic pituitary gonadal axis.1-3 Thus, greater empha-
0 a3 T( k! B. _* Z* }0 W6 r4 p8 Msis has been given to neuroradiologic imaging in
/ z V$ x9 u, I( e( x- D" }5 nboys with precocious puberty. In addition to viril-
* e( P. G w, |* l. |# Wization, the clinical hallmark of CPP is the symmet-' }2 |$ B2 q, u7 D/ }/ ?+ v
rical testicular growth secondary to stimulation by" C4 w5 [9 {+ `4 W1 j
gonadotropins.1,3. U: w& o! ]" M; k7 b" U! K
Gonadotropin-independent peripheral preco-
; }- F8 p h3 B- _7 j1 S4 O' K# ecious puberty in boys also results from inappropriate
6 m3 w5 \6 V. R: S Mandrogenic stimulation from either endogenous or
" { y/ }* g! x, q/ ?8 ?exogenous sources, nonpituitary gonadotropin stim-( g" Y1 t0 t" L, S: \5 ~+ H4 T& D
ulation, and rare activating mutations.3 Virilizing
# N# s. }8 ^, b. E+ H8 x$ `congenital adrenal hyperplasia producing excessive
- J7 c4 u% \" W$ Qadrenal androgens is a common cause of precocious
- w( |; Y9 G$ D4 s2 s& k! `. hpuberty in boys.3,4
3 B: \+ ]1 e4 L5 k, q/ bThe most common form of congenital adrenal
5 v2 L3 I! Y/ hhyperplasia is the 21-hydroxylase enzyme deficiency.
$ I. ^, ?9 H* ^, J( |7 X! @The 11-β hydroxylase deficiency may also result in+ `+ k; W1 |, M# l' X6 W% v
excessive adrenal androgen production, and rarely,
" a2 z: v# J" _- n0 r7 ?an adrenal tumor may also cause adrenal androgen
0 R# O" U \; N8 g4 Sexcess.1,3
. J4 O) l( ^# @3 Pat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
6 \. d, h: E/ c/ E1 A542 Clinical Pediatrics / Vol. 46, No. 6, July 2007/ m, l4 G( I, E- z
A unique entity of male-limited gonadotropin-. i( b R8 @) V3 Z6 F3 S& F6 q
independent precocious puberty, which is also known( ^2 |7 Y; c3 @0 c" n/ U0 `7 M
as testotoxicosis, may cause precocious puberty at a$ Y/ N' Y: f4 M A+ x
very young age. The physical findings in these boys
8 r0 L- w0 P; u& R+ lwith this disorder are full pubertal development,
, L' U. u! t# b2 ]1 V: jincluding bilateral testicular growth, similar to boys
. [$ x; n0 q# Q4 Q7 A( X5 j8 kwith CPP. The gonadotropin levels in this disorder
0 Y, @7 c9 t q' e2 r, U! Hare suppressed to prepubertal levels and do not show
, @+ J5 W7 a: M2 ^% ppubertal response of gonadotropin after gonadotropin-
7 l3 ^+ M- @( g, l2 x. }releasing hormone stimulation. This is a sex-linked
: X o+ p& x9 j" c/ ]; P0 Tautosomal dominant disorder that affects only
! @6 J/ i% }2 T- l% ]males; therefore, other male members of the family8 q2 Q* J, j' N) O3 k
may have similar precocious puberty.3
( s* M9 ^6 v* N9 b' N: s9 MIn our patient, physical examination was incon-
) P8 E0 o) d2 c$ v; O3 Xsistent with true precocious puberty since his testi-5 H F% P+ O3 z! j
cles were prepubertal in size. However, testotoxicosis/ H$ o( P) r0 u2 ^* K
was in the differential diagnosis because his father6 Y- T& f2 I% F+ _9 d" L0 r
started puberty somewhat early, and occasionally,
* M: E/ S8 T% X3 @' otesticular enlargement is not that evident in the% [- K9 y" l* w! y
beginning of this process.1 In the absence of a neg-
! l y2 |% l; |3 I ^% yative initial history of androgen exposure, our
. v0 _) J" J6 V, K' Bbiggest concern was virilizing adrenal hyperplasia,
0 U1 W8 Z, g2 {( p$ E$ `either 21-hydroxylase deficiency or 11-β hydroxylase, y& a4 |& P9 ?5 ?# I- y; O5 X
deficiency. Those diagnoses were excluded by find-; k" P, U/ w b, q' c
ing the normal level of adrenal steroids.* v2 d1 y5 E) a4 q
The diagnosis of exogenous androgens was strongly
; v7 [- T" J8 |* q; d# c5 s' Gsuspected in a follow-up visit after 4 months because
! Q5 f' B" H# Y, l% Q9 Kthe physical examination revealed the complete disap-8 e* @4 H' f: _# O
pearance of pubic hair, normal growth velocity, and: U5 l+ ?5 c; ?7 A: n4 ?
decreased erections. The father admitted using a testos-! ~% |& U$ B1 \2 q4 A
terone gel, which he concealed at first visit. He was& U/ @+ J; F+ F G
using it rather frequently, twice a day. The Physicians’: D9 r% i, o& y5 l" A
Desk Reference, or package insert of this product, gel or( g+ o |* H) r
cream, cautions about dermal testosterone transfer to$ M5 A# l0 w7 S H
unprotected females through direct skin exposure.: D5 p, c5 z& j. c6 j
Serum testosterone level was found to be 2 times the
4 W& Z j4 O% u' a* B. j/ K8 qbaseline value in those females who were exposed to
* \2 p) P' Y$ neven 15 minutes of direct skin contact with their male
~0 @( R$ r% f/ t: p, l6 Vpartners.6 However, when a shirt covered the applica-
& W5 l6 S: X8 j# T% K6 otion site, this testosterone transfer was prevented.
8 ^, V9 x9 j* }8 A$ W0 B! b. u# \Our patient’s testosterone level was 60 ng/mL,
0 I( t& q( s1 b& p* ]4 {; t% ]. Wwhich was clearly high. Some studies suggest that7 |# M- R3 V( q' C+ i
dermal conversion of testosterone to dihydrotestos-: _# @ M, h2 B3 M5 r: j
terone, which is a more potent metabolite, is more# {2 E) M7 |! }3 n, \* i+ f
active in young children exposed to testosterone
% W9 y- x3 x7 x; U/ n1 U# [; s6 Mexogenously7; however, we did not measure a dihy-% J, i) h, S; \& R1 B
drotestosterone level in our patient. In addition to6 }# |- p& _) C2 Z" H, |! @2 u
virilization, exposure to exogenous testosterone in' o X# g0 r5 C
children results in an increase in growth velocity and- p$ l6 i' Z3 j/ ?* c
advanced bone age, as seen in our patient.
. T) N- w$ u$ t" j' kThe long-term effect of androgen exposure during
2 {, O& V+ E3 n0 s! Learly childhood on pubertal development and final# z4 y2 b# a, I% \3 H% _; t1 U
adult height are not fully known and always remain d3 l8 l1 O- o0 F: y! I; P& L- }
a concern. Children treated with short-term testos-
! B0 _( P- O9 R+ ^9 x( ]5 u6 [% ?terone injection or topical androgen may exhibit some
/ m H. Y3 v# A) Z+ K. N( D# ]0 Racceleration of the skeletal maturation; however, after
; L6 u) q3 F& `9 q; ocessation of treatment, the rate of bone maturation. u- Y0 j2 r7 x6 x, M
decelerates and gradually returns to normal.8,9" y9 Y0 l' O; i. Y
There are conflicting reports and controversy
/ z2 C: L( p! t& D/ Bover the effect of early androgen exposure on adult
1 m6 `7 i ]' v1 f Npenile length.10,11 Some reports suggest subnormal9 h! S% k9 y, h' ?, @
adult penile length, apparently because of downreg-) H( s+ P: W8 d+ a$ p
ulation of androgen receptor number.10,12 However,
! j+ ~8 o( x& }3 G6 O0 ?Sutherland et al13 did not find a correlation between
7 F- u4 l) S& [1 Kchildhood testosterone exposure and reduced adult
g/ k: P# x. V! Z. N B7 I: Npenile length in clinical studies.
" p2 l: T8 i( h. K9 H7 YNonetheless, we do not believe our patient is
9 x) o; N; g5 n; }' X/ a: Xgoing to experience any of the untoward effects from
! ^ |% _5 m# Vtestosterone exposure as mentioned earlier because) U z7 U. c; g8 |
the exposure was not for a prolonged period of time.5 N* l; f" m+ [( S# }% u
Although the bone age was advanced at the time of# j( w j* \/ }" F7 K
diagnosis, the child had a normal growth velocity at
6 }. J% d/ \1 L( s+ i, Hthe follow-up visit. It is hoped that his final adult
W, M# o! R7 N/ e- Kheight will not be affected.
% _8 c3 t e" ~# a t U5 B7 R6 gAlthough rarely reported, the widespread avail-
1 G# V, {2 @9 ?- M) `ability of androgen products in our society may) ^5 T; a. H8 q3 g1 m
indeed cause more virilization in male or female
# c. X5 D) Y, z% J- tchildren than one would realize. Exposure to andro-+ @) ~& {0 _5 z3 @
gen products must be considered and specific ques-
; R! c: N( {/ ]& i( `tioning about the use of a testosterone product or6 D! a% Q; K' V! y; |1 D
gel should be asked of the family members during8 }0 F: q2 r$ R
the evaluation of any children who present with vir-
% K( A7 T& [ L9 v$ iilization or peripheral precocious puberty. The diag-; S- j. a6 }6 J" m
nosis can be established by just a few tests and by g* P' I; C8 o) ^
appropriate history. The inability to obtain such a
* J+ h+ _3 H; e: }history, or failure to ask the specific questions, may
- a' v# P, x' _9 v# B4 Rresult in extensive, unnecessary, and expensive2 X7 l }8 E0 L1 o; I3 ^% x
investigation. The primary care physician should be5 y& _/ P: ~' \1 i" u' V
aware of this fact, because most of these children/ t- N5 Q4 k# I7 j( x
may initially present in their practice. The Physicians’
8 v* l1 T0 q8 H7 {Desk Reference and package insert should also put a
" Y7 c' b& O5 X' kwarning about the virilizing effect on a male or0 x2 N( r1 p$ w! D7 x$ M! B
female child who might come in contact with some-, @/ s* x8 }: { |! |: ]
one using any of these products. ~! T0 w* W( j
References( o. ~5 [+ C# o
1. Styne DM. The testes: disorder of sexual differentiation
# x3 o) J5 Q- V! S( M0 rand puberty in the male. In: Sperling MA, ed. Pediatric
8 g8 h# \9 y) mEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;+ e/ l2 m+ c4 z5 X! ~4 `0 u* B& v/ ^
2002: 565-628.6 c3 G7 a7 S4 O3 P, ]
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious. x, G8 {0 q' F: f; o/ V* s3 |
puberty in children with tumours of the suprasellar pineal |
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