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is a significant concern for physicians. Central
# i- @# }# i) ?, A+ [precocious puberty (CPP), which is mediated
1 H" q1 z* t- Othrough the hypothalamic pituitary gonadal axis, has, s- R. c3 e. @+ a( F }) k
a higher incidence of organic central nervous system3 _3 a6 c8 p- q, n+ `
lesions in boys.1,2 Virilization in boys, as manifested
- _4 W( |! H5 lby enlargement of the penis, development of pubic' O/ ^3 q* w4 Q& t$ ^3 L9 l
hair, and facial acne without enlargement of testi-1 g$ g1 E* \1 t
cles, suggests peripheral or pseudopuberty.1-3 We
j) M2 ~1 L& O" E" H8 Y* c$ treport a 16-month-old boy who presented with the: n' X; {" k0 ~
enlargement of the phallus and pubic hair develop-
/ r: p9 c& T( [. L- B5 Mment without testicular enlargement, which was due
2 O9 m, c8 Q+ ]1 m4 B- b+ kto the unintentional exposure to androgen gel used by) @1 F$ I) |2 a P
the father. The family initially concealed this infor-
, b( G, H5 ~+ C" p# C& ymation, resulting in an extensive work-up for this
5 h4 J- ^6 _5 K0 `. A! I; hchild. Given the widespread and easy availability of6 z0 j% f0 k1 A: K2 e/ \# g
testosterone gel and cream, we believe this is proba-
! X4 t# [5 Z e9 S& ?+ s( l5 C5 Gbly more common than the rare case report in the
3 [8 b* F( O! U3 i# nliterature.4
5 h* q- b1 J7 u+ XPatient Report
8 X7 B9 K3 h; eA 16-month-old white child was referred to the2 C0 p8 b6 G: ]3 G! k/ w; c5 E; y
endocrine clinic by his pediatrician with the concern
' @# |$ l' I0 B& B+ ~. w! o* lof early sexual development. His mother noticed
" S7 ?+ M0 |1 L7 V: plight colored pubic hair development when he was
+ o$ ]3 c: B* tFrom the 1Division of Pediatric Endocrinology, 2University of/ o: [! _: D3 k% t
South Alabama Medical Center, Mobile, Alabama.
/ P$ ^2 d2 p& x3 K4 YAddress correspondence to: Samar K. Bhowmick, MD, FACE,& q4 X6 U6 d6 Z/ h) b3 b
Professor of Pediatrics, University of South Alabama, College of4 t+ r( R n2 `3 f+ `
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
' H, n* \) e! I/ e" c, ve-mail: [email protected].
, n; M' p( b3 n6 z5 pabout 6 to 7 months old, which progressively became
( A6 I* M9 K$ ]7 edarker. She was also concerned about the enlarge-$ S; m+ G9 n; I: g* c; e: v5 T
ment of his penis and frequent erections. The child/ o3 x& `6 y& a* u: I0 E. W* P
was the product of a full-term normal delivery, with
+ d2 h" ^8 r# U2 }# J2 Ea birth weight of 7 lb 14 oz, and birth length of
# w8 n0 X/ a9 s2 o! e20 inches. He was breast-fed throughout the first year3 l& b' l" v& C- Q' f
of life and was still receiving breast milk along with
. U3 g( ~# `2 m! ?" Rsolid food. He had no hospitalizations or surgery,' [2 z/ B$ ]. D: Q& a
and his psychosocial and psychomotor development
1 }( d4 U. |" B4 y% Q; uwas age appropriate.
; d* Q' ~ A( V. m2 H" t: [* wThe family history was remarkable for the father,9 s$ [" @8 J: [( I0 H5 ?2 Z
who was diagnosed with hypothyroidism at age 16,
) m& R- \+ e" z6 d0 Zwhich was treated with thyroxine. The father’s
5 t) p* S, Y$ theight was 6 feet, and he went through a somewhat. q: h# o* q7 p& {: \( S* m, {' n
early puberty and had stopped growing by age 14.
- E) w* y" Q/ k+ o9 c) ?5 }0 K, RThe father denied taking any other medication. The
3 R- d4 B5 T( @/ mchild’s mother was in good health. Her menarche* K. b8 a2 \! I& D9 Z7 |6 l3 t: \
was at 11 years of age, and her height was at 5 feet8 c( q( @$ ?7 w" i' G- j2 o3 l( h2 [
5 inches. There was no other family history of pre-
7 m' r. c* Z% l3 B9 |/ dcocious sexual development in the first-degree rela-4 K/ H# ~ _% F6 }, I+ Q1 C
tives. There were no siblings.& B& h: c7 R& _% L
Physical Examination
5 V) }$ [. g4 f9 p/ G; J9 WThe physical examination revealed a very active,
# d7 {) A7 h. v/ G B( H% xplayful, and healthy boy. The vital signs documented
; g E$ V' ~1 a6 j9 q- Ga blood pressure of 85/50 mm Hg, his length was
& f7 J0 W2 F8 h' A90 cm (>97th percentile), and his weight was 14.4 kg: O$ O* h) u- ~* f! c; x
(also >97th percentile). The observed yearly growth
. s% d' Q8 I' ^, [. X: ~. E3 gvelocity was 30 cm (12 inches). The examination of* @- v7 Z1 h) Z$ s/ Y
the neck revealed no thyroid enlargement.# \! ?0 b" W+ w7 u8 V- v6 p' B. G: v
The genitourinary examination was remarkable for
$ O: x8 X* K7 L3 oenlargement of the penis, with a stretched length of
' P$ `$ x# w( S/ b" H4 W9 t; R8 cm and a width of 2 cm. The glans penis was very well1 f0 P+ _+ d# W* f* z0 B) {
developed. The pubic hair was Tanner II, mostly around
, u* {( `9 {$ B/ x540
5 s, |. B* B* K$ x+ Dat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from7 {/ [9 [4 Z' ^( l! G
the base of the phallus and was dark and curled. The
# W Q: k8 ], A0 rtesticular volume was prepubertal at 2 mL each.
; T: z: J$ f* E7 }, fThe skin was moist and smooth and somewhat+ { Q6 o2 g4 L7 i
oily. No axillary hair was noted. There were no
; M' m6 N7 G, @/ Z% |& S7 Mabnormal skin pigmentations or café-au-lait spots.
: o6 K* d( L3 o8 c; o7 oNeurologic evaluation showed deep tendon reflex 2++ s' [( ]& G+ {
bilateral and symmetrical. There was no suggestion; h0 c# k9 F5 D( Q7 Z
of papilledema.( D: T2 y- ~, B# l7 W; `
Laboratory Evaluation
( j. M6 D s; \6 `$ N' zThe bone age was consistent with 28 months by! S! @: ]0 i7 h7 P0 K
using the standard of Greulich and Pyle at a chrono-/ e! Y1 z8 G' B' @) ?% U% h
logic age of 16 months (advanced).5 Chromosomal
: f: w1 M9 f( f9 fkaryotype was 46XY. The thyroid function test, S; {8 P$ G3 E. Z0 {$ F
showed a free T4 of 1.69 ng/dL, and thyroid stimu-4 a* i( c' ^/ W/ `/ O w* ]
lating hormone level was 1.3 µIU/mL (both normal).
, c; s& N$ C; M+ g& J0 d3 ZThe concentrations of serum electrolytes, blood
9 ~1 D X0 g; e9 zurea nitrogen, creatinine, and calcium all were y- f3 p; w/ v- [8 U
within normal range for his age. The concentration
7 ~8 E$ U! |5 D. eof serum 17-hydroxyprogesterone was 16 ng/dL
* |5 u, c" I! s* Y! g(normal, 3 to 90 ng/dL), androstenedione was 20
% X& f. @2 v; N( ?& J8 ?2 k7 x; I& gng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-8 h8 G2 i( D, A# @; G
terone was 38 ng/dL (normal, 50 to 760 ng/dL),' x4 ~' I/ v, g! f9 O5 _5 E
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
" E3 U& v+ \0 T+ F6 |6 P; E49ng/dL), 11-desoxycortisol (specific compound S)
/ T0 x, V2 ^" a! Hwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
" K$ i- K+ q& v; ?% H+ ctisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
; G" P$ `8 N; M8 I6 Atestosterone was 60 ng/dL (normal <3 to 10 ng/dL),9 v! }% o7 \# S6 C, C
and β-human chorionic gonadotropin was less than
* k' K5 }- j2 V0 M; g, E" k5 mIU/mL (normal <5 mIU/mL). Serum follicular
/ |5 ^( \' d; Q0 A5 V# Estimulating hormone and leuteinizing hormone
1 k7 n6 X% Z3 O7 j" N+ B! |concentrations were less than 0.05 mIU/mL, C9 y: G9 z* b; P- N
(prepubertal).. Z9 G+ L7 |, w4 G7 j2 f# t- W- o
The parents were notified about the laboratory
$ h1 ^# {, i3 ?7 U# I) C9 n+ Uresults and were informed that all of the tests were7 O8 O3 C* k4 s) f( L8 I
normal except the testosterone level was high. The) R+ k* V( E7 S( H
follow-up visit was arranged within a few weeks to/ Y* Y5 L3 C! \
obtain testicular and abdominal sonograms; how-
: F x8 y5 v+ k/ S/ iever, the family did not return for 4 months./ [9 ^) q- m. @2 X" V! S B3 ]% D
Physical examination at this time revealed that the
7 T7 v* ]) L! J0 s& }child had grown 2.5 cm in 4 months and had gained
& Z {- r B; e( N( {! H7 b2 kg of weight. Physical examination remained
; C" |. e& ^( Z* |& d ?unchanged. Surprisingly, the pubic hair almost com-* \) ]. a2 g. u' K& |
pletely disappeared except for a few vellous hairs at9 {8 R1 X2 ~' ?' N
the base of the phallus. Testicular volume was still 2
3 M9 {7 m+ b/ E" x6 y9 f& ?& omL, and the size of the penis remained unchanged.
% t3 u7 K. ]( I% RThe mother also said that the boy was no longer hav-
: P6 M. @. }9 P: `ing frequent erections.
& R0 S5 @- N! T$ K4 J vBoth parents were again questioned about use of
+ x1 d* m1 G, A- n7 {# Q# t2 P7 f) `1 Eany ointment/creams that they may have applied to
" i! ]# K, K+ Z$ s/ ]/ \1 |the child’s skin. This time the father admitted the, T W8 S6 x3 ]8 I1 l5 x* o
Topical Testosterone Exposure / Bhowmick et al 541
+ B2 G# j; M+ d9 G4 Luse of testosterone gel twice daily that he was apply-
9 I6 T* j: Q4 c/ P3 Fing over his own shoulders, chest, and back area for
% ?2 j! O7 \5 Ga year. The father also revealed he was embarrassed! h% [5 G% |+ A9 s4 ]) a3 \
to disclose that he was using a testosterone gel pre-) g1 ]3 O2 r1 L1 R8 q, X
scribed by his family physician for decreased libido
7 B+ O$ \" E& o- ?4 b, p& esecondary to depression.
! @6 b5 X% z2 }6 u2 `1 vThe child slept in the same bed with parents.& g: q b/ B6 \ M+ C, b
The father would hug the baby and hold him on his
' R) U( U7 O G) U7 pchest for a considerable period of time, causing sig-) Z8 g, B+ C' [4 o- x
nificant bare skin contact between baby and father.
1 f. w( o) j) {* Q, u5 MThe father also admitted that after the phone call,
& B. P+ @) x q) ^5 v( p9 F3 r1 {when he learned the testosterone level in the baby; i% c1 J3 _& [
was high, he then read the product information" c% T3 c, _. H1 }6 b) v
packet and concluded that it was most likely the rea-! C/ I2 M8 v N# k% i4 \
son for the child’s virilization. At that time, they
; G2 G% U- R% Y6 s" o* C$ fdecided to put the baby in a separate bed, and the
. r9 M8 R; U2 E' i& Dfather was not hugging him with bare skin and had. J6 c5 D& F- T% o
been using protective clothing. A repeat testosterone! ?! W, B) _ }4 t; _
test was ordered, but the family did not go to the
! I9 z! E @: j9 w9 ]- V ]" P( s0 Klaboratory to obtain the test., U# F. `5 o! F
Discussion
; Z4 s. X$ ? N& O% _Precocious puberty in boys is defined as secondary
, |% u/ T ^; j8 U2 _sexual development before 9 years of age.1,4
6 v. F& X4 n5 d) pPrecocious puberty is termed as central (true) when5 b+ \/ k' I6 ^3 D
it is caused by the premature activation of hypo-
9 \0 ]/ |* v# o* Dthalamic pituitary gonadal axis. CPP is more com-
6 l/ P. }6 S# I( emon in girls than in boys.1,3 Most boys with CPP
! B3 h! B! f. z' Amay have a central nervous system lesion that is
' Y- U4 \9 A6 F2 _responsible for the early activation of the hypothal-9 ~/ H* k8 G# R( V, W( K5 i
amic pituitary gonadal axis.1-3 Thus, greater empha-8 ~- _6 Y$ ?% H \8 U( m
sis has been given to neuroradiologic imaging in
. h! n$ l. F3 r! ~. W/ Jboys with precocious puberty. In addition to viril-
! C1 E/ r' v, Uization, the clinical hallmark of CPP is the symmet-, r- w8 W# y$ W% y
rical testicular growth secondary to stimulation by
+ L% B( ]+ M! N$ F- b* {4 S/ K& y4 sgonadotropins.1,3
3 b( S7 `/ X. G: u' P* S# fGonadotropin-independent peripheral preco-$ t% Z4 [" @; b5 j
cious puberty in boys also results from inappropriate
Y% R" ]/ W; R( Vandrogenic stimulation from either endogenous or
2 u; j$ t5 ^% j; N; i; v) X* p# wexogenous sources, nonpituitary gonadotropin stim-
$ I5 a: j3 e% w9 E* ^0 Q9 Rulation, and rare activating mutations.3 Virilizing F8 Y* W+ ~ S4 T) ?5 \: g& V
congenital adrenal hyperplasia producing excessive
8 N# Z8 y) t6 h7 h9 Y2 f Z7 Tadrenal androgens is a common cause of precocious" H. R5 O1 P$ M" s G
puberty in boys.3,4
% r$ U C+ @7 ^6 m' {& f2 NThe most common form of congenital adrenal1 n. r$ _+ ^+ D2 u
hyperplasia is the 21-hydroxylase enzyme deficiency.
: j7 h5 ~& U; ?( Q: }. e* EThe 11-β hydroxylase deficiency may also result in
7 S5 I$ P: d; Gexcessive adrenal androgen production, and rarely,- o# T3 ]- c) t, w0 ^2 q( h
an adrenal tumor may also cause adrenal androgen
/ s3 x H4 m( R1 jexcess.1,32 F8 n7 P6 P6 D5 x2 m
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from- U( x- q& ~, ]* Y" Q/ O
542 Clinical Pediatrics / Vol. 46, No. 6, July 20078 R& ?- H8 Y3 C% d
A unique entity of male-limited gonadotropin-
9 w5 j, ?: A6 i; Eindependent precocious puberty, which is also known* K2 G9 t- l/ j9 k
as testotoxicosis, may cause precocious puberty at a! S- w( U) \0 P, y4 e: _9 p& _
very young age. The physical findings in these boys
; g( ?9 U8 ^3 o" K' awith this disorder are full pubertal development,1 R9 m5 u' B9 D, O1 \! \
including bilateral testicular growth, similar to boys
! x* ?; f: H$ c" @# K$ gwith CPP. The gonadotropin levels in this disorder
- ~' ?4 U7 J1 V$ Mare suppressed to prepubertal levels and do not show
, c# Y0 g* F6 hpubertal response of gonadotropin after gonadotropin-: G; v- a. d, W7 L4 K+ [+ T% ?1 X
releasing hormone stimulation. This is a sex-linked
" j7 s6 Q- [% d2 S* F2 aautosomal dominant disorder that affects only4 H: f0 m8 x) O5 T
males; therefore, other male members of the family6 o7 |6 N- X# Z) l% c
may have similar precocious puberty.3
3 h' h# }# a. k: ^$ \% L+ TIn our patient, physical examination was incon-
$ o9 \8 L- u; O3 Isistent with true precocious puberty since his testi-9 ^3 h: K7 `! K: j$ C
cles were prepubertal in size. However, testotoxicosis y% s% p8 f+ F* [
was in the differential diagnosis because his father
8 U/ }2 k9 S5 ^3 A. P3 P6 Tstarted puberty somewhat early, and occasionally,% ~; \ l/ T7 t
testicular enlargement is not that evident in the
; q8 Y- b5 O4 ]9 pbeginning of this process.1 In the absence of a neg-. Z9 B& p7 E/ c8 d% k: F) ]
ative initial history of androgen exposure, our2 ]2 O( s" L( n8 _0 |% n
biggest concern was virilizing adrenal hyperplasia,6 \+ v h6 ^. I2 V1 o2 ]& T
either 21-hydroxylase deficiency or 11-β hydroxylase
4 U% u0 |2 A, a9 t$ k' L- Tdeficiency. Those diagnoses were excluded by find-
* R! o7 \# S, m0 Eing the normal level of adrenal steroids.' R; s( g" Z5 R# S- T2 \" d& I
The diagnosis of exogenous androgens was strongly
2 f: ?. [, ]: osuspected in a follow-up visit after 4 months because% ?) K% M0 z: ?; j8 \ j
the physical examination revealed the complete disap-8 U0 S j9 T2 G& v2 L9 ? H! Z
pearance of pubic hair, normal growth velocity, and
7 I: }- ], i3 E7 s/ ^( R) F9 |5 Edecreased erections. The father admitted using a testos-
2 \; Y9 T& W; ^; @7 a, n& Vterone gel, which he concealed at first visit. He was l K# [& z' _" w3 P$ A5 z8 I# ]
using it rather frequently, twice a day. The Physicians’
, m9 g$ i' \, q4 u. ?4 `Desk Reference, or package insert of this product, gel or
. W5 R0 A2 y8 n: P6 o9 i8 ncream, cautions about dermal testosterone transfer to
/ k. X; F' q1 p1 g3 M$ U+ Qunprotected females through direct skin exposure.
4 B% K. M- r7 s; ]* z0 uSerum testosterone level was found to be 2 times the v% V6 i' \" {- N2 P
baseline value in those females who were exposed to1 p/ M5 Y; M( w9 H6 E
even 15 minutes of direct skin contact with their male l7 U* x5 l! c! W T. L4 e8 q
partners.6 However, when a shirt covered the applica-7 C$ S' u3 i5 C, h
tion site, this testosterone transfer was prevented.3 Z+ q# X* B/ N2 s+ j
Our patient’s testosterone level was 60 ng/mL,
; W! {/ W/ K: k: S( ewhich was clearly high. Some studies suggest that
, ?: i6 q3 M# S. M* M- h" `4 }3 X( H4 Hdermal conversion of testosterone to dihydrotestos-
0 `( l9 I( u: h' g2 H2 Hterone, which is a more potent metabolite, is more
4 A u8 a2 X: m" j7 qactive in young children exposed to testosterone
1 ~6 |+ f$ @8 d+ s3 lexogenously7; however, we did not measure a dihy-) k+ Q. A- e% V8 {! P; X
drotestosterone level in our patient. In addition to: S& H2 Z; }+ S e& u4 A
virilization, exposure to exogenous testosterone in1 i9 j- K, s* O' d, s
children results in an increase in growth velocity and; g s- P5 M5 i9 m; W
advanced bone age, as seen in our patient.4 g" F5 W$ Q2 f. t, {, Y/ Z
The long-term effect of androgen exposure during; R( V$ ?2 {/ M
early childhood on pubertal development and final
$ o/ @/ _& O4 F' @; Dadult height are not fully known and always remain
: S+ h! C1 q4 c* @a concern. Children treated with short-term testos-
( g+ j$ {0 i! ?& P/ p+ {terone injection or topical androgen may exhibit some$ ~* T7 r* `/ U2 d* p
acceleration of the skeletal maturation; however, after
1 T. ?" [2 m7 G& G: s. l" Fcessation of treatment, the rate of bone maturation A" I% ?' \# F' e% S
decelerates and gradually returns to normal.8,9
) {2 a" d9 b" cThere are conflicting reports and controversy
, n Z1 {( b# J- w- o4 M; h; O1 Aover the effect of early androgen exposure on adult* Z6 d9 V5 P( z) W1 C9 X4 s: q
penile length.10,11 Some reports suggest subnormal
' Q/ ^5 x' a6 i0 t: g: _adult penile length, apparently because of downreg-# v+ s0 O( j9 h0 M! c( k
ulation of androgen receptor number.10,12 However,3 a0 ]& R7 l4 r3 Z
Sutherland et al13 did not find a correlation between3 t; L1 m% O1 ^. i
childhood testosterone exposure and reduced adult8 `- A, C/ n7 U' G
penile length in clinical studies.
& `. F9 O# S# U" D, j" Q( Q9 ONonetheless, we do not believe our patient is
) J5 l- i2 p3 R3 ]$ ~( `$ ~( Egoing to experience any of the untoward effects from
( n- w- g3 W6 z- ^5 A6 Dtestosterone exposure as mentioned earlier because
9 P: @ b% j7 `' Z! }3 Jthe exposure was not for a prolonged period of time.
7 O: W2 @7 b" j5 I/ _) _8 @0 D+ VAlthough the bone age was advanced at the time of
# y, }! W1 T' W- W0 W: A9 odiagnosis, the child had a normal growth velocity at
: t: {: f; W" \9 w' l6 |the follow-up visit. It is hoped that his final adult T) y) H( a3 g( J; e3 d
height will not be affected.$ \* D0 |9 H n. w) C
Although rarely reported, the widespread avail-
8 [6 G8 s |( `6 ^. G3 @+ D' G7 Y- Vability of androgen products in our society may8 N: k: u5 v5 U1 q! { B' a" M
indeed cause more virilization in male or female+ b+ M. @' u$ l- h8 x
children than one would realize. Exposure to andro-; P2 x) [( E; {- ~) Q
gen products must be considered and specific ques-
; M9 [6 M* v. utioning about the use of a testosterone product or
7 k a( Y( F7 H* E! f3 B0 kgel should be asked of the family members during1 A2 |2 B% I- Y; W% b) @2 p
the evaluation of any children who present with vir-
4 L% C6 o# ^: i. ~ilization or peripheral precocious puberty. The diag-
% r- O& N3 j# U; Q+ c3 Onosis can be established by just a few tests and by8 N- B+ ?9 s3 A! Y
appropriate history. The inability to obtain such a
9 V3 R' T/ f' p2 v# _# ^/ w0 ehistory, or failure to ask the specific questions, may* R9 \8 W' m$ ^
result in extensive, unnecessary, and expensive x. @ b" k/ n. h8 Z3 {& c
investigation. The primary care physician should be
) K' y( ^! w0 ?aware of this fact, because most of these children: S) Z+ M7 W1 U* y# h/ {
may initially present in their practice. The Physicians’0 _* K3 A. [) ?& N8 a( ]& [! x
Desk Reference and package insert should also put a1 d+ n/ Y8 c( q) i1 q8 R1 M$ p5 E
warning about the virilizing effect on a male or
) G* F3 ?' x6 M* A3 w/ Tfemale child who might come in contact with some-
/ Z/ f7 U. J2 I9 E" ~0 Wone using any of these products.
4 R+ R$ x1 A; e. i( ^2 S* H( W2 D& zReferences
" f- m- n# l0 h' P. a1. Styne DM. The testes: disorder of sexual differentiation/ V d+ l# e2 ]) O, _( w4 k* d
and puberty in the male. In: Sperling MA, ed. Pediatric
# t+ i: G3 h( t% ~7 M, sEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;" ]8 G: _0 X% z. j/ x& I5 e
2002: 565-628.0 C$ ?& D M# g( z' ]- R
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
\( H- P. g4 E% \. r! t3 X( Ipuberty in children with tumours of the suprasellar pineal
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Pediatric Endocrinology. 4th ed. New York, NY: Marcel
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4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual! k' G: f. h5 Z3 a; Y) s( J
development in a two-year-old boy induced by topical
1 E1 S/ `: z1 e& L9 f$ ], yexposure to testosterone. Pediatrics. 1999;104:e23.
& K0 K+ j6 a- r5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
/ g# s& X4 N$ pSkeletal Development of the Hand and Wrist. 2nd ed.
, X+ |* n; I$ i. b: [Stanford, CA: Stanford University Press; 1959.( R! d) P6 R) b- ^
6. Physicians’ Desk Reference. Androgel 1% testosterone,2 f" l, z% k7 C' Q/ L1 j" R- J" R! s
Unimed Pharmaceutical Inc. Montvale, NJ: Medical; y4 ?* P$ N4 q
Economics Company, Inc; 2004:3239-3241.
8 e" A9 Z6 I( W: \8 e0 K) V7. Klugo RC, Cerny JC. Response of micropenis to topical
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