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is a significant concern for physicians. Central
( \( p0 t4 s9 D3 kprecocious puberty (CPP), which is mediated
8 ]9 N9 ]7 r8 k; F) X2 x. [: _' A& Hthrough the hypothalamic pituitary gonadal axis, has0 q) R- Y2 v+ r3 b5 }
a higher incidence of organic central nervous system
9 o$ S5 x( G5 X) z+ Y+ q, R# Zlesions in boys.1,2 Virilization in boys, as manifested
0 w8 j+ e8 \ g9 r* W9 Cby enlargement of the penis, development of pubic
" W, }9 e8 o- V' d% v- K& m1 y+ shair, and facial acne without enlargement of testi-8 r! q6 E) o4 t0 d: n
cles, suggests peripheral or pseudopuberty.1-3 We! @8 ~' H9 X" t* q( R# h; S
report a 16-month-old boy who presented with the
' X2 |5 ?2 Z8 |5 w4 u& venlargement of the phallus and pubic hair develop-
8 a% I. J3 @! {- y2 z q0 {ment without testicular enlargement, which was due0 u4 L, q! B9 {5 e8 y' Y. E% L4 u( G, L# b
to the unintentional exposure to androgen gel used by3 Q7 B: ?5 r) ?* g; F$ V8 i; q
the father. The family initially concealed this infor-
- c0 P7 d7 `3 \* [5 Xmation, resulting in an extensive work-up for this9 u& Y3 `* Q+ \0 M9 r% [
child. Given the widespread and easy availability of7 Q9 L! r0 t; t- @. Z# }" [
testosterone gel and cream, we believe this is proba-# d! T% }) j: @3 P
bly more common than the rare case report in the" _& P1 C) K: [1 j; n' C4 i6 K: c% [
literature.4( N3 E: K0 Z; ^+ D& |2 y9 x
Patient Report
G$ a; {, n! X/ o5 @+ M9 vA 16-month-old white child was referred to the% P- H5 m) G6 l8 T" g7 Z% n) w" a
endocrine clinic by his pediatrician with the concern5 h0 |8 |, K" w, a
of early sexual development. His mother noticed
6 n. s7 Z, X* f" r- n4 t& olight colored pubic hair development when he was
7 x; F; a( `( T. x! p# `4 nFrom the 1Division of Pediatric Endocrinology, 2University of
. y5 Q0 [9 y0 _. ^* c& JSouth Alabama Medical Center, Mobile, Alabama.
5 Z! o" B* s0 U8 }, s: PAddress correspondence to: Samar K. Bhowmick, MD, FACE,: y/ Z% k! P+ ?' Y
Professor of Pediatrics, University of South Alabama, College of
( a- U% ]8 Z- A1 bMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;$ z0 e( P e( q, d. K# K6 H
e-mail: [email protected].; q r3 a4 ^- G9 m6 `- j
about 6 to 7 months old, which progressively became1 m; c" }6 k3 R
darker. She was also concerned about the enlarge-: v# O3 [# I' U; d! c
ment of his penis and frequent erections. The child
* x3 {6 g+ j# Q8 B; owas the product of a full-term normal delivery, with- r- B/ {2 Y; |2 Y9 U. p* {: q
a birth weight of 7 lb 14 oz, and birth length of/ N( [3 R) [* ^
20 inches. He was breast-fed throughout the first year# y, M6 N2 ? B# N9 {8 C
of life and was still receiving breast milk along with
5 D2 B$ _- [" J' msolid food. He had no hospitalizations or surgery,
1 I4 I6 l# C5 R$ Vand his psychosocial and psychomotor development: \: r4 m* A- Y# G% {% M8 Q( E
was age appropriate.
( @- W, l- S2 c$ EThe family history was remarkable for the father,
* ] D8 X1 {( q; y3 k# g( X' U m0 s5 Iwho was diagnosed with hypothyroidism at age 16,
1 f; r1 o8 V: B) o! s- |which was treated with thyroxine. The father’s6 f, C3 S6 m/ _0 r0 l
height was 6 feet, and he went through a somewhat6 @( l. b/ J* E
early puberty and had stopped growing by age 14.$ D- V8 `3 v( Z( E2 h
The father denied taking any other medication. The
_; |' J) ~5 }7 Y# _2 ]) J- P9 `child’s mother was in good health. Her menarche7 t4 H) t7 X8 w9 r
was at 11 years of age, and her height was at 5 feet# _* O7 L- \3 h4 B7 W) E
5 inches. There was no other family history of pre-5 Z5 _# r' S3 G0 U
cocious sexual development in the first-degree rela-" p2 R/ s# y' `4 ?( T/ Y
tives. There were no siblings.+ h/ N7 N K/ @! B, S+ Q
Physical Examination
, H% R- R z3 c* \: ZThe physical examination revealed a very active,
2 @" B4 E! }5 splayful, and healthy boy. The vital signs documented1 T0 V9 d; k6 e# K
a blood pressure of 85/50 mm Hg, his length was: @$ @3 N4 F! T; F. R1 [; O( b( ]
90 cm (>97th percentile), and his weight was 14.4 kg
# p1 L; G+ L8 X5 j# \(also >97th percentile). The observed yearly growth" W* P3 h# z: J6 o8 l; G' J- b
velocity was 30 cm (12 inches). The examination of
. N) P) M' Y$ M+ I- @0 Uthe neck revealed no thyroid enlargement.
+ e- Q! e0 K4 |) HThe genitourinary examination was remarkable for
; ~- q s- a0 V6 J$ ^& senlargement of the penis, with a stretched length of8 X. V# Y9 l9 h6 C
8 cm and a width of 2 cm. The glans penis was very well
$ _9 @- o* b1 H9 G9 H" E# mdeveloped. The pubic hair was Tanner II, mostly around
9 z4 J9 t* B" H0 \& f540 C9 d' G9 G* h/ B* Q3 W1 n
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from( ?- H: h# U! r% V$ v1 ~+ u0 Y
the base of the phallus and was dark and curled. The
5 k% P7 N2 y' r: n$ S4 o* Etesticular volume was prepubertal at 2 mL each./ }4 z# B4 d/ X1 l' _
The skin was moist and smooth and somewhat
- e4 B" z6 w3 U! w1 b+ Eoily. No axillary hair was noted. There were no X& _: i9 M* t- {9 G" k0 ?
abnormal skin pigmentations or café-au-lait spots.
7 `$ l- m3 W5 l2 c- PNeurologic evaluation showed deep tendon reflex 2+
: E* Z9 \9 {( l8 }bilateral and symmetrical. There was no suggestion; k6 I* E4 ?! l+ O, ?$ G
of papilledema.1 w! B8 t& z, m0 v
Laboratory Evaluation
& A5 \& J: d( S; J3 v: y NThe bone age was consistent with 28 months by0 O; {% r/ S* Z! @# |" ?
using the standard of Greulich and Pyle at a chrono-
' A2 V2 S; V" }" z* ylogic age of 16 months (advanced).5 Chromosomal/ @5 J" e0 p+ E" `& R6 p
karyotype was 46XY. The thyroid function test& @8 W5 B3 ?% b0 `2 {5 O
showed a free T4 of 1.69 ng/dL, and thyroid stimu-9 [8 G9 d% S) F h6 D# C
lating hormone level was 1.3 µIU/mL (both normal).& @. A9 `& e( Z$ t5 @8 J
The concentrations of serum electrolytes, blood
9 S: o' [' ~' }urea nitrogen, creatinine, and calcium all were
4 D- N- t4 e" C" E$ o# V" \5 ]within normal range for his age. The concentration% D* @; e- y1 q2 e0 l: V# E
of serum 17-hydroxyprogesterone was 16 ng/dL% }: {9 y# ?6 |4 }3 I
(normal, 3 to 90 ng/dL), androstenedione was 20
- b3 A3 t3 m$ Y2 L' fng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
( b* v9 n! U2 |2 p+ d" R. Yterone was 38 ng/dL (normal, 50 to 760 ng/dL),: l. }6 U% w& ~6 k' F
desoxycorticosterone was 4.3 ng/dL (normal, 7 to6 Z6 k( [6 T+ k7 N1 @9 L5 t3 _# |
49ng/dL), 11-desoxycortisol (specific compound S)+ H2 A1 i( U, o! ?4 b" K) W S
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
9 j2 U H1 `5 btisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total! t, W$ x0 f+ S4 K0 @5 a: F
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),! G! G* ^' w) ?' c& b& w6 K; i+ ~
and β-human chorionic gonadotropin was less than- S" Z, w2 J' c6 K. v8 d
5 mIU/mL (normal <5 mIU/mL). Serum follicular/ O$ ]2 `* \, w$ s! s
stimulating hormone and leuteinizing hormone3 B/ @$ _! J& k5 \: @# n2 N; T5 C4 f
concentrations were less than 0.05 mIU/mL2 R' \8 A# F# x2 |( h
(prepubertal).& l+ k$ D ?' {$ ]! H. h' }! ], w
The parents were notified about the laboratory/ m# |, G# e5 K7 m5 [) U% _ O
results and were informed that all of the tests were
- J6 P4 A9 T3 [' x. ?% h, {* P9 Y8 Lnormal except the testosterone level was high. The& K2 Z4 W1 \- L/ N5 e7 W& s
follow-up visit was arranged within a few weeks to3 k; _% c" B1 Q
obtain testicular and abdominal sonograms; how-
^/ K P6 G4 O5 Oever, the family did not return for 4 months.
5 a) c; g, e; G$ b* XPhysical examination at this time revealed that the
' A3 f0 R) q0 x# Hchild had grown 2.5 cm in 4 months and had gained
6 o' f- ~) o4 Z/ w K2 kg of weight. Physical examination remained K6 p, S1 Q$ x0 Z, @
unchanged. Surprisingly, the pubic hair almost com-
0 [5 g% j l) P) K ^( m, e3 vpletely disappeared except for a few vellous hairs at% Z: n# n% ^: f4 i2 d8 E
the base of the phallus. Testicular volume was still 2
3 v1 }9 ~, Z, f( gmL, and the size of the penis remained unchanged.
7 F+ J. ^) B2 m3 n: N6 F. M' SThe mother also said that the boy was no longer hav-
. z4 N! h2 R8 M* ?ing frequent erections.% D( q( V- y7 t7 M, {9 p
Both parents were again questioned about use of) T: G3 h+ l' k5 T& F0 D! X7 N% J
any ointment/creams that they may have applied to! }9 i& y7 m+ |0 C! D2 @
the child’s skin. This time the father admitted the
! [8 j9 V4 ^4 t6 I5 dTopical Testosterone Exposure / Bhowmick et al 541
* M: t4 g4 R& T3 X! Puse of testosterone gel twice daily that he was apply-
* C, W: U5 s/ o' P7 o* o/ K9 h1 Sing over his own shoulders, chest, and back area for
( j7 M. l1 L* C- \a year. The father also revealed he was embarrassed" z n# n. T% q& e% G4 ~7 ?
to disclose that he was using a testosterone gel pre-
. A5 t6 ?4 W+ i7 {* cscribed by his family physician for decreased libido
: J! G6 t: Y- V. W: c* R; f2 Y) Ysecondary to depression.
k- p) x# V# z: {$ B# CThe child slept in the same bed with parents.
9 ?% A3 y0 @; F; \9 K" h& R: p6 OThe father would hug the baby and hold him on his
) Q+ t, E; P( M/ F2 V' [7 pchest for a considerable period of time, causing sig-
" M! [* O% K, }! J- u0 mnificant bare skin contact between baby and father.; \7 i8 [9 \) Y9 J+ e j- o
The father also admitted that after the phone call,- O/ l" |2 m& u4 Q1 i
when he learned the testosterone level in the baby: L: I8 W7 [5 g# D0 m
was high, he then read the product information
0 l) |* G% Q. O; Hpacket and concluded that it was most likely the rea-
1 _+ A- Z" L- p* Y: ^: Bson for the child’s virilization. At that time, they
; z' S4 s: ~& K$ }decided to put the baby in a separate bed, and the
# i) m, I) L8 S7 Qfather was not hugging him with bare skin and had* E' k- X3 v; J0 t5 j/ _6 |
been using protective clothing. A repeat testosterone
3 ~6 h6 _, q i: j+ ftest was ordered, but the family did not go to the
" U; g" t; ?/ j& \5 Z; Claboratory to obtain the test.
/ [! ?8 M8 b9 x6 UDiscussion0 J2 p0 S! W$ a' F( x- m1 @3 p2 q
Precocious puberty in boys is defined as secondary
- r2 g# n0 U; K5 V) x7 Zsexual development before 9 years of age.1,48 l R4 u: n9 _2 v; E# j
Precocious puberty is termed as central (true) when. }* K- ]- r% p
it is caused by the premature activation of hypo-% m% T7 E2 k% g& U
thalamic pituitary gonadal axis. CPP is more com-4 y2 A3 x8 t( r5 A/ x
mon in girls than in boys.1,3 Most boys with CPP5 P- N' e3 Z1 d. }; G5 V0 _5 F
may have a central nervous system lesion that is
# Q) ]& ~2 z' Y0 u1 iresponsible for the early activation of the hypothal-
! _( T* f) B; P$ |& L; Damic pituitary gonadal axis.1-3 Thus, greater empha-/ {! F; L$ N( ~( [& ^6 L
sis has been given to neuroradiologic imaging in7 P$ D+ j/ }- c. E
boys with precocious puberty. In addition to viril-
' {% `. q; \" l: M+ Pization, the clinical hallmark of CPP is the symmet-3 i" l+ ]( k. a! R/ v4 ]
rical testicular growth secondary to stimulation by! Y2 n- [' Q* T+ n# p
gonadotropins.1,3+ g7 R7 A3 {9 C0 `
Gonadotropin-independent peripheral preco-. O) |3 t3 e2 I( |
cious puberty in boys also results from inappropriate
, `$ t" |. O: S* N0 ]androgenic stimulation from either endogenous or
- }. ^7 l+ n( d3 n' A1 Hexogenous sources, nonpituitary gonadotropin stim-5 x- @8 N# s& t9 U' g) C
ulation, and rare activating mutations.3 Virilizing9 V9 A: M4 F& w' o( a; K, [
congenital adrenal hyperplasia producing excessive
- D5 o6 G0 i8 m. \3 Nadrenal androgens is a common cause of precocious7 |7 v" ]9 V) p% v. V
puberty in boys.3,4
4 [4 O3 O! R4 Q4 c, oThe most common form of congenital adrenal
- z8 j# l. h8 Y8 N6 khyperplasia is the 21-hydroxylase enzyme deficiency.) b7 k* R! o+ p7 a4 A; T
The 11-β hydroxylase deficiency may also result in
* V0 Z3 k& n) ^0 Q" R" _" u0 Sexcessive adrenal androgen production, and rarely,* ~) W# v5 H/ M* @
an adrenal tumor may also cause adrenal androgen
* f* j2 |) e' h8 M; jexcess.1,3
- N$ L- ?7 Q8 ~: e/ nat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from6 S( `0 V0 d# B) n3 @7 F$ d) K
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007" c9 k9 ]0 p6 b
A unique entity of male-limited gonadotropin-
6 ~) J) B- f- Oindependent precocious puberty, which is also known! h2 G5 V+ x% v; Z2 n
as testotoxicosis, may cause precocious puberty at a8 O8 q; U$ l% P
very young age. The physical findings in these boys
" Y( n0 @; f! {with this disorder are full pubertal development,9 B# y; W* F5 b! i' i2 D! r
including bilateral testicular growth, similar to boys3 \! [5 n" i0 @' b% N
with CPP. The gonadotropin levels in this disorder
t, Z# {" T x# e+ _5 p: zare suppressed to prepubertal levels and do not show
2 p; ]) R W$ Z4 m7 Opubertal response of gonadotropin after gonadotropin-' H7 O4 z: Q" g# D
releasing hormone stimulation. This is a sex-linked6 g }/ `0 S @5 T# X5 X& m
autosomal dominant disorder that affects only
\0 l" o- ]2 D8 A6 Hmales; therefore, other male members of the family
: o3 E- _* w3 @) e3 l( Amay have similar precocious puberty.3
8 U2 k5 X( W$ y8 xIn our patient, physical examination was incon-
' r: \- }; |/ X( X! {) _9 h9 [sistent with true precocious puberty since his testi-
, [1 y6 r2 E ]- [8 T5 j. ncles were prepubertal in size. However, testotoxicosis
0 ?5 g& {$ D0 Z- m$ W# cwas in the differential diagnosis because his father1 _6 U' E) ~9 {
started puberty somewhat early, and occasionally,
( s, a; k3 w, W" e; `5 p( ^testicular enlargement is not that evident in the
% O) p, ]9 K- h' Z4 I# g5 M& tbeginning of this process.1 In the absence of a neg-
% Q; m8 H6 p2 H( v6 X2 ^ative initial history of androgen exposure, our) a3 M1 A1 H( A- D! D4 n5 V
biggest concern was virilizing adrenal hyperplasia,
! \7 i: q; |6 C3 keither 21-hydroxylase deficiency or 11-β hydroxylase
" k2 G2 T) ~8 A- ?' g. ^6 u8 Ddeficiency. Those diagnoses were excluded by find-
5 C7 s, K3 M6 wing the normal level of adrenal steroids. ?0 {( ^+ @" K0 b, X; B
The diagnosis of exogenous androgens was strongly% `$ `4 q5 O) _/ s6 x
suspected in a follow-up visit after 4 months because$ q" Q; n% ?* ~: I$ Y H9 b
the physical examination revealed the complete disap-
" w) g& o) S- Fpearance of pubic hair, normal growth velocity, and
* T6 S. F6 ~0 N& ~! c* V. `+ m1 jdecreased erections. The father admitted using a testos-
$ \; n) h8 |2 s! Oterone gel, which he concealed at first visit. He was/ M% ^) z! r1 }5 C* Y' e. c4 @
using it rather frequently, twice a day. The Physicians’6 G! B }( R6 A
Desk Reference, or package insert of this product, gel or; E- _* |, t. e+ K0 h7 u% e3 i: P6 |1 G
cream, cautions about dermal testosterone transfer to* T, _! ?7 ^9 v- a
unprotected females through direct skin exposure.1 D. @4 f& T' G1 r- ~
Serum testosterone level was found to be 2 times the
4 z( W' x( P1 A2 E8 n; r, T( |6 Ubaseline value in those females who were exposed to& G: z2 e O5 X' p+ b0 i0 U
even 15 minutes of direct skin contact with their male
7 ~0 V$ v W! }! [4 A" F, |partners.6 However, when a shirt covered the applica-
9 O4 H$ R# x k! T1 Wtion site, this testosterone transfer was prevented.7 `4 l8 J5 ?$ c8 e
Our patient’s testosterone level was 60 ng/mL,$ l4 |, z# S5 t1 M. D9 P
which was clearly high. Some studies suggest that
2 `/ X# u) V& Y+ Jdermal conversion of testosterone to dihydrotestos-
6 Z, u `% a3 Kterone, which is a more potent metabolite, is more
5 B9 E9 P+ C' |+ V& f; {! Ractive in young children exposed to testosterone/ @/ I2 D: g6 o* O6 J9 k$ k
exogenously7; however, we did not measure a dihy- Y9 o1 {% G9 \! H2 f+ T
drotestosterone level in our patient. In addition to3 M0 ~& w/ s9 u7 e2 k
virilization, exposure to exogenous testosterone in
/ ~3 k1 {+ l9 d Kchildren results in an increase in growth velocity and' {3 B+ Q' ~& h M* w% W
advanced bone age, as seen in our patient.
2 t* t B( {1 i6 N( f6 ?. k! [* zThe long-term effect of androgen exposure during
# F: D3 t6 X$ e$ z0 I7 Tearly childhood on pubertal development and final
) j! ^4 U3 j4 ^7 ?* madult height are not fully known and always remain
& x2 D. t8 X/ G- ~$ x na concern. Children treated with short-term testos-
1 R4 e! V2 P6 W/ o: ^3 T E# G cterone injection or topical androgen may exhibit some
/ q% K! x: O' \( t& X. e' x: z: [, \acceleration of the skeletal maturation; however, after
$ K9 `0 F( Z* C# L- Fcessation of treatment, the rate of bone maturation
5 o& s ~- @: c+ c) T+ L0 K) Sdecelerates and gradually returns to normal.8,9
4 k- e( O) d2 ~/ S( U) R) hThere are conflicting reports and controversy0 E$ }" ~% z. R9 }' n9 A. P
over the effect of early androgen exposure on adult
4 C' @4 C+ s6 r' q) Y, ^penile length.10,11 Some reports suggest subnormal
( V. S" ^- s0 J% p! p8 P) padult penile length, apparently because of downreg-% v0 o6 _1 d% ~3 n
ulation of androgen receptor number.10,12 However,
0 H! j( c# V( u* N9 `Sutherland et al13 did not find a correlation between
# b& T) y: W. K& c- pchildhood testosterone exposure and reduced adult. N, Z4 s, a3 A" p# t1 H9 \
penile length in clinical studies.0 Y1 r( P. z5 s" @& z# b
Nonetheless, we do not believe our patient is: y% F- S I0 m& B
going to experience any of the untoward effects from' }9 Y* [ t6 F$ _# Q. W e3 s* ^
testosterone exposure as mentioned earlier because* P3 s. n# P, L0 Y7 C1 [6 U+ d
the exposure was not for a prolonged period of time.! `0 @. {" P; @# S0 F3 ?" R6 `) ^% U
Although the bone age was advanced at the time of* Y2 A) V, I( p+ l
diagnosis, the child had a normal growth velocity at2 |$ I# V- o8 B" L- t
the follow-up visit. It is hoped that his final adult
3 s# _* L3 A ]: H" Gheight will not be affected.; V' U" ?' { B; e' A* y
Although rarely reported, the widespread avail-$ }( U2 c+ w! y/ e* r# U; ^
ability of androgen products in our society may5 F8 D; S) g, v+ l/ @# d
indeed cause more virilization in male or female
9 Y& l1 A: {# l) Tchildren than one would realize. Exposure to andro-; x# x) s) O1 f2 T2 z
gen products must be considered and specific ques-
% H: [$ w& ^! Btioning about the use of a testosterone product or8 r& Q6 a2 @/ ~, Z3 z, E; f
gel should be asked of the family members during
" D* f# M3 V, mthe evaluation of any children who present with vir-
' B5 m0 T9 [( n( l; N! L& Pilization or peripheral precocious puberty. The diag-
+ l/ \" W0 g% c1 _) x/ Onosis can be established by just a few tests and by# j# W4 E! |+ a; R& Y
appropriate history. The inability to obtain such a
D* @: T0 I3 U: J( Z& ohistory, or failure to ask the specific questions, may
+ Z1 s& O; r% sresult in extensive, unnecessary, and expensive
) F, }1 Q8 l% G1 B8 vinvestigation. The primary care physician should be' |/ O" J$ e* p7 t1 i- T
aware of this fact, because most of these children0 l+ z. o j5 r5 u8 O6 \
may initially present in their practice. The Physicians’1 {8 W& t& h0 t& E& S& `( q, J0 W; Q
Desk Reference and package insert should also put a
% G+ d' Q2 X0 _8 k5 B9 e7 ~warning about the virilizing effect on a male or9 |0 {0 U1 a4 N. p$ o4 l0 K
female child who might come in contact with some-
; O0 o" H, z" u5 q7 l! T8 gone using any of these products.! ^/ z. o1 z: p c
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1. Styne DM. The testes: disorder of sexual differentiation
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Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
4 i( G; I& J+ z2002: 565-628.$ _7 I# V1 M6 U6 N; ]% K0 s
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious( L) c, ]3 A! `; X6 v7 Y$ j; e
puberty in children with tumours of the suprasellar pineal
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% W' _( |; Q& L* v0 @9 E! R0 Dareas: organic central precocious puberty. Acta Paediatr.( {; }) C4 f8 r0 I- I# p
2001;90:751-756.
; [3 Q6 \; L+ q4 [4 h3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
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, x& d# X8 [& i9 |Dekker Inc; 2003:211-238.0 | O9 \" I0 R$ X$ r& j0 E
4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual$ I& A9 N8 {& g2 t
development in a two-year-old boy induced by topical m4 K7 U1 J( ]( r
exposure to testosterone. Pediatrics. 1999;104:e23.; n3 K8 g& k; P q0 V
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
6 K9 R) m" p& ESkeletal Development of the Hand and Wrist. 2nd ed.
, p, w) x/ h e& A4 Y7 [Stanford, CA: Stanford University Press; 1959.
' n6 |; c" s; S5 n; g6. Physicians’ Desk Reference. Androgel 1% testosterone,
1 M5 K, s0 N O, _' K3 ZUnimed Pharmaceutical Inc. Montvale, NJ: Medical4 K1 L& }* H0 M8 `5 u% }2 Z
Economics Company, Inc; 2004:3239-3241.
7 `1 w& W& x+ {$ x1 A7. Klugo RC, Cerny JC. Response of micropenis to topical
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