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is a significant concern for physicians. Central
8 C, t. A$ z, D' }' i) u2 Sprecocious puberty (CPP), which is mediated
8 F! S2 {) m2 W+ g; Xthrough the hypothalamic pituitary gonadal axis, has
* N* n* f! l+ R# A) @! Wa higher incidence of organic central nervous system7 N V3 p3 ]8 u. [& S' h [
lesions in boys.1,2 Virilization in boys, as manifested& y/ u$ Z' X- T) a
by enlargement of the penis, development of pubic
$ r. n! t2 G7 H+ z# b4 Dhair, and facial acne without enlargement of testi-1 C* R5 g" q& I- X' o K2 l+ j, l8 g
cles, suggests peripheral or pseudopuberty.1-3 We9 R9 b0 e2 b( e6 W( V. v
report a 16-month-old boy who presented with the
+ {4 f! B4 t9 r& B& Lenlargement of the phallus and pubic hair develop-
' j2 N; b; Q+ zment without testicular enlargement, which was due
/ {) \; Y$ i i6 G$ \to the unintentional exposure to androgen gel used by9 o7 _4 ? d, [+ ^' O x2 Z
the father. The family initially concealed this infor-
& H, W' Q& k0 h3 C$ }mation, resulting in an extensive work-up for this
2 R& e% ^9 F* ^! V* N+ ]" _child. Given the widespread and easy availability of
! T# T+ N& W. A) |) z0 N" |testosterone gel and cream, we believe this is proba-0 m' h9 R. r5 a8 C( Q$ p2 \
bly more common than the rare case report in the4 s( |- {- G( N4 o
literature.40 f/ |$ t, I- c+ H. E% M! D, W
Patient Report
$ O H, l6 v: Y5 X9 uA 16-month-old white child was referred to the( p \0 L8 y4 e& |9 \5 [6 \1 l9 i
endocrine clinic by his pediatrician with the concern
. }( m" B Z' l6 ]& ^! j% @of early sexual development. His mother noticed$ m8 R7 i5 Z# _9 v- i
light colored pubic hair development when he was4 r3 ^# z9 q$ y/ R
From the 1Division of Pediatric Endocrinology, 2University of2 w- }- X( H3 W+ ^: D7 h- @
South Alabama Medical Center, Mobile, Alabama.- o, {( C4 Q* x( i6 s; H
Address correspondence to: Samar K. Bhowmick, MD, FACE,
4 v! B' O) s4 ~$ u ZProfessor of Pediatrics, University of South Alabama, College of
' w6 u1 S* N* O6 ?5 dMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;! J5 R8 P+ L7 |3 }8 b0 x' [
e-mail: [email protected].: E, O) D5 p: v$ j. L- s
about 6 to 7 months old, which progressively became
! w. C: S/ l& hdarker. She was also concerned about the enlarge-2 O% D2 {! ^/ f5 M
ment of his penis and frequent erections. The child
# h6 i. Z8 G+ {+ ?, R* {( Gwas the product of a full-term normal delivery, with
/ }: S1 p9 Z$ F& t3 x* j4 ^4 Oa birth weight of 7 lb 14 oz, and birth length of {( @" K; _& y- V* f* G! P
20 inches. He was breast-fed throughout the first year( r6 G4 d9 i! v! d
of life and was still receiving breast milk along with
% b2 H# r) S7 N7 T+ isolid food. He had no hospitalizations or surgery,
5 \9 Y# U, b6 Q, G( B7 @; b7 Wand his psychosocial and psychomotor development# T0 e# l) G; X4 d" |' k+ [8 Y+ I
was age appropriate.
; }4 k8 e7 X+ e+ uThe family history was remarkable for the father,, Y3 Z- C. C+ Y; e
who was diagnosed with hypothyroidism at age 16,
3 q0 y! W2 T7 H6 b* R$ I1 I$ I" twhich was treated with thyroxine. The father’s7 {2 c4 p! F6 z$ u, M
height was 6 feet, and he went through a somewhat
. o- W1 H: V4 k) i3 t% Q3 z+ l; jearly puberty and had stopped growing by age 14.
. \) O2 q2 j7 nThe father denied taking any other medication. The2 ]3 G: s0 l$ f+ h( l7 }# @
child’s mother was in good health. Her menarche! V1 x( @& g9 P! v' B
was at 11 years of age, and her height was at 5 feet. z1 D& r1 s- ^- Y1 _& p& [
5 inches. There was no other family history of pre-
0 Q! H! S# S7 @% Zcocious sexual development in the first-degree rela-
9 b0 p* C% w+ L* j. s) P& Gtives. There were no siblings.
/ E1 h: M% j% ]$ w. V, |Physical Examination) m6 `# W' p5 \: t
The physical examination revealed a very active,
% O3 g& [/ u( i9 Y& V" o" Jplayful, and healthy boy. The vital signs documented
6 b) Q! Q3 f% _1 {a blood pressure of 85/50 mm Hg, his length was" J# Y- j; b# W
90 cm (>97th percentile), and his weight was 14.4 kg, H" h- D6 T) s. x' J, {
(also >97th percentile). The observed yearly growth5 w4 s! {" A5 [& q( L/ p) W
velocity was 30 cm (12 inches). The examination of! A. a7 R- H8 J. `$ e+ R
the neck revealed no thyroid enlargement.
4 _8 u4 U" a9 M, _The genitourinary examination was remarkable for
' C# x" T/ ~! y' P4 Lenlargement of the penis, with a stretched length of1 K' g Z' B" ^$ Y: F/ h
8 cm and a width of 2 cm. The glans penis was very well1 L' o8 {$ W3 }! A; i, V# M
developed. The pubic hair was Tanner II, mostly around
8 G( [* ]4 @( l7 L540
/ l( n* n3 u8 w4 o; a; @1 y6 pat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from1 j9 X; [6 Y: }) ]
the base of the phallus and was dark and curled. The
6 ?& f: ^' b7 U& }( Ytesticular volume was prepubertal at 2 mL each.
- O% c/ o ~( Y9 K8 x A MThe skin was moist and smooth and somewhat
- j! _" C; V) S! v3 ioily. No axillary hair was noted. There were no
% P- S7 j9 k* _3 \+ A4 r0 sabnormal skin pigmentations or café-au-lait spots.) X* K4 M& f) ]
Neurologic evaluation showed deep tendon reflex 2+0 R, ?" z1 v/ I8 {
bilateral and symmetrical. There was no suggestion' U3 l6 D. J4 j$ N) {
of papilledema.5 s/ u, \* D8 H8 T& @
Laboratory Evaluation) O" [ U) M- e- L8 [
The bone age was consistent with 28 months by; `- Q9 F- H9 l) O$ Z5 {. i9 T
using the standard of Greulich and Pyle at a chrono-
0 p) n, P9 k6 y7 rlogic age of 16 months (advanced).5 Chromosomal+ y4 V2 A5 A8 c. ], S
karyotype was 46XY. The thyroid function test
% X4 ?5 u0 T0 D0 `9 bshowed a free T4 of 1.69 ng/dL, and thyroid stimu-
. a, J; M9 F7 a( ~7 slating hormone level was 1.3 µIU/mL (both normal).
5 K+ R2 Q+ ?3 N! m/ J/ m fThe concentrations of serum electrolytes, blood
1 c* E. m# F" ?, }, f: Murea nitrogen, creatinine, and calcium all were; B( t5 C$ @# F! V: m2 m: n
within normal range for his age. The concentration
8 d! ~2 h; Y$ k8 r3 @- m- U8 p4 a6 O# fof serum 17-hydroxyprogesterone was 16 ng/dL& D: W3 K3 B- H
(normal, 3 to 90 ng/dL), androstenedione was 20
5 [2 k* O% E+ S$ d7 F' X( Z K7 Qng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-" r- E7 R3 e+ t8 a% y
terone was 38 ng/dL (normal, 50 to 760 ng/dL),$ [7 W+ J8 [% Y& o, }8 n) h
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
! {. G" A6 ?: f6 i% @9 i; N49ng/dL), 11-desoxycortisol (specific compound S)
- f" y( O; Y# H0 _; A6 }was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-5 a. v0 W6 Y( K9 n+ e* D+ Y
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total, I6 ?: H5 X& I7 \2 o+ K
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
L6 Y& s+ S, ^- Yand β-human chorionic gonadotropin was less than
& o, T0 k! t& ^; `7 w' y( r: ]5 mIU/mL (normal <5 mIU/mL). Serum follicular; D0 c: L8 a0 a0 g+ `+ d6 J
stimulating hormone and leuteinizing hormone! X- w' J2 z0 k6 ~1 K+ x( S
concentrations were less than 0.05 mIU/mL4 p0 p/ l, e3 a' b0 g% r
(prepubertal).
) O% P% m L9 \( G0 Q9 O5 u/ ^, pThe parents were notified about the laboratory8 a( p! Y5 L; ~" ]2 a- t; L
results and were informed that all of the tests were
/ `7 q4 r! O, o8 V- gnormal except the testosterone level was high. The
% x+ T: H1 s6 R& H. Jfollow-up visit was arranged within a few weeks to
' u3 }; d) Q- i" v& P Gobtain testicular and abdominal sonograms; how-
- c3 E3 J- `" aever, the family did not return for 4 months.
$ a2 S9 L& w0 H- |* JPhysical examination at this time revealed that the
: |; \% g0 s- O! x+ e9 M* Echild had grown 2.5 cm in 4 months and had gained4 M7 f: v- ~5 R0 h [
2 kg of weight. Physical examination remained
+ U7 b/ {5 V9 R+ C! @unchanged. Surprisingly, the pubic hair almost com-
0 j) x' f: Y0 T* Lpletely disappeared except for a few vellous hairs at+ ^/ ~3 O/ W. b: ~
the base of the phallus. Testicular volume was still 24 E4 A0 |. k3 q# S
mL, and the size of the penis remained unchanged.
0 Y9 b/ L k, k ^% y" F3 {% eThe mother also said that the boy was no longer hav-: p: \+ r. E, D o( @2 j3 [7 [3 r# \
ing frequent erections.
( P8 u2 D, O4 G7 cBoth parents were again questioned about use of3 X8 ^0 i) j/ H m5 v- L9 g. I* @
any ointment/creams that they may have applied to
! ?" W# D( l9 ^2 A/ \" @$ u1 ?the child’s skin. This time the father admitted the5 ^2 A. K: L5 @* n6 j
Topical Testosterone Exposure / Bhowmick et al 541% L% i# o( j* Z! e$ Y. M
use of testosterone gel twice daily that he was apply-
; u; `$ A6 _& aing over his own shoulders, chest, and back area for
- c9 n1 ^' p1 o- O8 p" Ia year. The father also revealed he was embarrassed$ G2 ]+ I3 f3 f; ? Z
to disclose that he was using a testosterone gel pre-1 p3 v( m5 T# c; p4 q8 b
scribed by his family physician for decreased libido
1 W; m0 J/ U% {6 N# n) h+ [secondary to depression.. K; ~3 @# w* G1 V" t4 Q
The child slept in the same bed with parents.
, P7 E$ ^* E' x+ i. X0 IThe father would hug the baby and hold him on his/ n4 H4 P- m' }5 |, t) O" Q2 e7 v
chest for a considerable period of time, causing sig-
) B8 R& _; X; }# k. `nificant bare skin contact between baby and father.
; L& F0 z5 r( R \The father also admitted that after the phone call,. @7 f( P9 k) B f: \8 Y5 w
when he learned the testosterone level in the baby
7 e2 _( j/ I& G/ _was high, he then read the product information7 L( ]7 ?' o2 V
packet and concluded that it was most likely the rea-- b. m1 G7 h" ?6 p$ _
son for the child’s virilization. At that time, they2 ]" I( P7 R* P5 y# Y+ e Y
decided to put the baby in a separate bed, and the
1 T6 ^% Z c0 \# v. ofather was not hugging him with bare skin and had+ U1 F- f( R3 j# X
been using protective clothing. A repeat testosterone
- a# N" K; u5 k& qtest was ordered, but the family did not go to the
" N4 ~) o, y, K" ^& A$ w! Alaboratory to obtain the test.8 [$ v* I7 z, W3 |4 @* Y0 _
Discussion, f" q9 g# ]+ A' d A
Precocious puberty in boys is defined as secondary
C* X2 K, ?4 ], A# s0 [- k5 lsexual development before 9 years of age.1,42 F, p# [* j% A. Z
Precocious puberty is termed as central (true) when
+ a; f+ x/ r7 s: a7 U1 ^% s% wit is caused by the premature activation of hypo-
! Y- @" {4 B2 f% p+ @# T" b4 Ethalamic pituitary gonadal axis. CPP is more com-% s* N. }3 T& B4 T- V- n1 v
mon in girls than in boys.1,3 Most boys with CPP
9 j% I, V8 G( I0 P( [! S/ Ymay have a central nervous system lesion that is+ E4 |% B/ ]. e7 n0 a, r. X5 E
responsible for the early activation of the hypothal-
7 _4 h J! A# ~5 R( h$ hamic pituitary gonadal axis.1-3 Thus, greater empha-
) @1 G% \3 V. H$ b- zsis has been given to neuroradiologic imaging in
+ W1 ^/ z! B2 g7 r9 f! c) lboys with precocious puberty. In addition to viril-
& s, O0 M- i, j& k( U: v% xization, the clinical hallmark of CPP is the symmet-
, p9 o0 K7 S; _5 N n; z2 |rical testicular growth secondary to stimulation by
! G9 Y7 u" g5 P! wgonadotropins.1,3
( M0 \4 ?. T0 |4 |- V" c( ?Gonadotropin-independent peripheral preco-( s% B% @1 f( A1 s2 k% x' i% } U. t
cious puberty in boys also results from inappropriate
1 A8 p2 I4 o8 s5 c/ `' ?androgenic stimulation from either endogenous or4 W/ m' S% H$ ?0 k! W# E9 k* E
exogenous sources, nonpituitary gonadotropin stim-6 m, u4 i8 r$ Q' v( C
ulation, and rare activating mutations.3 Virilizing
9 q0 _8 w+ j7 U, ^+ i( Dcongenital adrenal hyperplasia producing excessive
9 o7 A# h, L- J, _7 ladrenal androgens is a common cause of precocious, C B' r0 h, I! H4 r8 s
puberty in boys.3,4
5 ?) P- S U# O9 Q0 @The most common form of congenital adrenal
- z* R( ?7 I, J! @! t8 Khyperplasia is the 21-hydroxylase enzyme deficiency.
9 C; w, Y8 C5 l5 U U: ^The 11-β hydroxylase deficiency may also result in8 p' B9 V( U' V3 V
excessive adrenal androgen production, and rarely,2 g& C* r E/ `4 }
an adrenal tumor may also cause adrenal androgen* s& X7 I% f# W
excess.1,3
+ u2 j# |1 d! fat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from8 }& [) v8 p) g
542 Clinical Pediatrics / Vol. 46, No. 6, July 20070 n5 g7 {( E1 O$ t" {1 I4 }
A unique entity of male-limited gonadotropin-
7 }) C/ y: k( a% s" Y. yindependent precocious puberty, which is also known; _. D, p; n" l: X5 H6 D
as testotoxicosis, may cause precocious puberty at a
2 d2 H# N# K0 t0 D$ `: uvery young age. The physical findings in these boys
( f# R# e4 ~1 swith this disorder are full pubertal development,3 b/ j. h. b$ h6 `' Y3 d$ k- S# u$ B4 v
including bilateral testicular growth, similar to boys" ^' J* `9 p4 a; l
with CPP. The gonadotropin levels in this disorder
5 i8 G" |. S0 a; @are suppressed to prepubertal levels and do not show
( N9 Z6 g2 P. `& Rpubertal response of gonadotropin after gonadotropin-
, i% Y' W) N) X8 Y! _releasing hormone stimulation. This is a sex-linked
1 G _' E1 Z! Q/ V$ xautosomal dominant disorder that affects only% R4 a* `1 {! u- B- G9 @9 s7 G
males; therefore, other male members of the family
6 P+ x1 }* I% ^8 ~. omay have similar precocious puberty.3
9 y* O% @; u8 j; t/ KIn our patient, physical examination was incon-
; o& P) Z0 C# E. \sistent with true precocious puberty since his testi-* l& f0 ^: L( D) E
cles were prepubertal in size. However, testotoxicosis
6 A0 [0 a! f7 \8 ywas in the differential diagnosis because his father
2 {( d5 f# V" |- m6 c2 istarted puberty somewhat early, and occasionally,
, T3 U9 j j: `0 M4 o [testicular enlargement is not that evident in the+ \! }4 D3 q" t( e
beginning of this process.1 In the absence of a neg-
! c5 U3 n$ G5 X: {& _ative initial history of androgen exposure, our: c4 k& ^4 ^; T' W; `$ W
biggest concern was virilizing adrenal hyperplasia,) B2 Q( P! a! E* f( s
either 21-hydroxylase deficiency or 11-β hydroxylase+ E+ \7 g: u7 Y6 T# i* G
deficiency. Those diagnoses were excluded by find-: {% }" f) w( B2 U4 `- K$ @/ p2 _
ing the normal level of adrenal steroids. H5 L* F( ?4 }
The diagnosis of exogenous androgens was strongly+ j# ~) r' \- ?, D, s8 w/ z
suspected in a follow-up visit after 4 months because1 G- e# }! b. E4 Z5 R
the physical examination revealed the complete disap-
( B8 `- k- m* ipearance of pubic hair, normal growth velocity, and x' j, y5 N4 H! o, u
decreased erections. The father admitted using a testos-, x A8 r, N! O r
terone gel, which he concealed at first visit. He was
6 R# s, z4 d+ X$ p+ y9 }using it rather frequently, twice a day. The Physicians’
8 J% S0 Y8 J& u" R) O; wDesk Reference, or package insert of this product, gel or2 s. T/ g/ e; F. z+ O( s Q3 W
cream, cautions about dermal testosterone transfer to
# r: _* A _7 C5 {0 ]unprotected females through direct skin exposure.0 c' g0 o% ^: q) e- {* [9 M
Serum testosterone level was found to be 2 times the3 `% \* w/ c, q. P
baseline value in those females who were exposed to+ i% f8 e- V6 M+ [
even 15 minutes of direct skin contact with their male0 t7 j) Y1 v8 T6 r5 n. F# Z
partners.6 However, when a shirt covered the applica-& y' k8 y- ]/ P% e! Y+ X( H
tion site, this testosterone transfer was prevented.
5 t/ t& K4 E }4 S( yOur patient’s testosterone level was 60 ng/mL,
9 O5 S; j( o, ]& F: U/ b7 G3 Hwhich was clearly high. Some studies suggest that
6 ?; ]/ a* R+ u, Bdermal conversion of testosterone to dihydrotestos-
, V* B7 G4 j5 T5 _: pterone, which is a more potent metabolite, is more1 n/ k- F5 _% u; U) D T8 i+ g0 C
active in young children exposed to testosterone$ o- N E5 J" N6 V2 G$ r
exogenously7; however, we did not measure a dihy-* s5 m1 _. D% e- Q: L; u2 r
drotestosterone level in our patient. In addition to
1 N7 o2 W! M' ]' R* Jvirilization, exposure to exogenous testosterone in
9 y" r* x: n+ qchildren results in an increase in growth velocity and4 @3 ]2 m* l: Q$ P Z
advanced bone age, as seen in our patient.- t* {( F' L5 o; s' H! i/ H' d6 Q
The long-term effect of androgen exposure during
( ]) [/ Z5 m/ M2 c6 D/ t+ kearly childhood on pubertal development and final
( @: s2 N1 v* }adult height are not fully known and always remain
# P0 T! s" g# a# Na concern. Children treated with short-term testos-- I# o0 W v; d& G' Y
terone injection or topical androgen may exhibit some/ a/ ?1 _0 z3 C* M3 {( Y* {
acceleration of the skeletal maturation; however, after& S5 [; N. {4 E
cessation of treatment, the rate of bone maturation
: G3 S2 U9 P) o4 ^. q& ndecelerates and gradually returns to normal.8,9
' m; T: R; w" eThere are conflicting reports and controversy u1 |" x0 j' S0 R* l: z+ E# C
over the effect of early androgen exposure on adult5 Y5 o" o- Q3 o' x) [; P$ h, L* G/ H4 N
penile length.10,11 Some reports suggest subnormal( s, R: O: P# l* B2 b+ {, ?0 ^. e
adult penile length, apparently because of downreg-4 g D- v$ x. E; N
ulation of androgen receptor number.10,12 However,
) ?$ m# C+ h1 ~* W6 O) }Sutherland et al13 did not find a correlation between
7 ]( p9 ^$ N" nchildhood testosterone exposure and reduced adult/ s7 U" e t+ O+ c. Y
penile length in clinical studies.- t5 p9 [, _/ K1 |5 {& A
Nonetheless, we do not believe our patient is
! U. L7 q3 z8 x* `$ u, ~( O7 Kgoing to experience any of the untoward effects from; U4 \" }4 M3 l+ o; i$ x2 w0 M
testosterone exposure as mentioned earlier because P# i. K+ g# H* w
the exposure was not for a prolonged period of time.5 d1 O! N0 c7 B6 v
Although the bone age was advanced at the time of( i: Y z- P$ |
diagnosis, the child had a normal growth velocity at
[9 X3 f. @0 `the follow-up visit. It is hoped that his final adult
% I A$ \3 d) Q8 S' Bheight will not be affected.% n; a. o2 M$ o6 ^
Although rarely reported, the widespread avail-- s3 z/ N" `+ O5 ?6 F" `
ability of androgen products in our society may! `# Z h* V3 }" ?: C
indeed cause more virilization in male or female1 i H/ S1 J8 T5 y* [+ C9 H* b. E
children than one would realize. Exposure to andro-# H( N5 A% _1 Z9 u- A, U7 Z
gen products must be considered and specific ques-
4 @ h, K* k: M# A9 S+ Ktioning about the use of a testosterone product or6 z, H, l; Q* z% w5 P* w" F2 `
gel should be asked of the family members during
; ]- g1 t4 B/ N9 j$ A% Uthe evaluation of any children who present with vir-4 \& z9 ]" E. G# x1 H
ilization or peripheral precocious puberty. The diag-
) S9 V/ L8 m- p1 k! ynosis can be established by just a few tests and by# a1 O6 ~& |- A e+ e
appropriate history. The inability to obtain such a' S6 m5 k3 P0 y
history, or failure to ask the specific questions, may
" Q a) x. y: A o, C% W( o) Z* bresult in extensive, unnecessary, and expensive
. r; i4 M8 u$ I+ b6 F) |& winvestigation. The primary care physician should be7 Z& N/ z0 S" s& l' O' ]" u, }0 J
aware of this fact, because most of these children
/ y) v: i- O1 | t9 F4 _# Hmay initially present in their practice. The Physicians’- _) P- C/ A- `( i! y
Desk Reference and package insert should also put a
* E' M2 |' h( m% `warning about the virilizing effect on a male or
" J5 E2 h: K3 w( ~% W! Gfemale child who might come in contact with some-
5 c9 t& d; T# o) {0 H& B; v/ zone using any of these products.
4 R0 q8 R) E! Z5 jReferences
: o2 d' j9 P$ }& @0 s6 X' \1. Styne DM. The testes: disorder of sexual differentiation" Z5 {1 A9 G3 p5 `" d
and puberty in the male. In: Sperling MA, ed. Pediatric
2 u/ o) q( B% I% _8 U+ _- F) @0 ]Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;3 g B" D# w( H# d: U2 y$ S
2002: 565-628., s- _- I8 n0 E" u K, K
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
, I0 n- _ i5 Q, R3 apuberty in children with tumours of the suprasellar pineal
* g0 x& c. D( i9 ]" s/ k, xat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
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areas: organic central precocious puberty. Acta Paediatr.
. Z: c$ O+ V1 K$ S5 H2001;90:751-756.$ o! @8 f: r* R N7 ^
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.! F) x2 N; A+ t* C8 R7 H8 n
Pediatric Endocrinology. 4th ed. New York, NY: Marcel" K, b" E; u# J2 C; V4 ^
Dekker Inc; 2003:211-238.
2 V& o( C S" W: g$ t! l T% H4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual9 {5 r8 s; Z; a7 Q5 a7 g
development in a two-year-old boy induced by topical j: O* M) S* d* E1 G
exposure to testosterone. Pediatrics. 1999;104:e23.
2 K7 s1 v. x! M* m8 z1 a" V/ y5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
6 G2 T4 ?) c7 K9 ~) c" G: l* ?Skeletal Development of the Hand and Wrist. 2nd ed.( g8 ]7 Z: P) V
Stanford, CA: Stanford University Press; 1959.
" l1 J; I' F" e. @6. Physicians’ Desk Reference. Androgel 1% testosterone,5 [5 j- ]1 Y% h2 }0 F$ l( i
Unimed Pharmaceutical Inc. Montvale, NJ: Medical
' A5 @; X2 T$ S w; {Economics Company, Inc; 2004:3239-3241.
0 H9 l p2 G6 R; J* e/ [ ^7. Klugo RC, Cerny JC. Response of micropenis to topical
; h+ s1 [# r4 J6 B/ \1 _1 r& Etestosterone and gonadotropin. J Urol. 1978;119:
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