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is a significant concern for physicians. Central( J9 i' z, p1 D8 Y; A% x
precocious puberty (CPP), which is mediated* N" l- T! c) s7 C4 Y
through the hypothalamic pituitary gonadal axis, has
8 L) g6 I' o! F! pa higher incidence of organic central nervous system3 ~2 s+ ~1 e+ a) [
lesions in boys.1,2 Virilization in boys, as manifested4 N6 T. w0 W" B" S
by enlargement of the penis, development of pubic1 O, X4 X, ]3 |3 x. V( ^, h
hair, and facial acne without enlargement of testi-0 v7 w; x7 U1 l# d9 _& e9 p
cles, suggests peripheral or pseudopuberty.1-3 We
! N$ R8 C/ U* z$ v! `; C) \8 M& Zreport a 16-month-old boy who presented with the( p& ?8 v& t' B- b0 ?. v
enlargement of the phallus and pubic hair develop-" e* e5 N; T" i3 P+ s( H
ment without testicular enlargement, which was due
( k: c! X% T9 m0 ? nto the unintentional exposure to androgen gel used by
( x0 d9 r2 G" ^the father. The family initially concealed this infor-, p* O% C9 Z$ ]* y
mation, resulting in an extensive work-up for this
: s1 b8 L1 R- T# k3 A7 kchild. Given the widespread and easy availability of" z9 m) s6 R+ u v3 j
testosterone gel and cream, we believe this is proba-
1 T& o/ q. F2 z" A) F1 k6 @* qbly more common than the rare case report in the: t" Y& u6 D- H4 t
literature.4
" H6 t7 L" r) ]( g2 uPatient Report: _$ ?/ O0 [9 n* f7 I
A 16-month-old white child was referred to the5 @& _, z* s# J+ n5 H
endocrine clinic by his pediatrician with the concern
( Q" P) o( i! G* T+ {& fof early sexual development. His mother noticed# V1 P) N# w2 x0 `, i
light colored pubic hair development when he was# j" Z) e6 h6 d3 h! o
From the 1Division of Pediatric Endocrinology, 2University of
2 } u: z& m) l: ISouth Alabama Medical Center, Mobile, Alabama.
. t9 k5 W, A3 n' J1 sAddress correspondence to: Samar K. Bhowmick, MD, FACE,3 W/ G4 g9 H2 H
Professor of Pediatrics, University of South Alabama, College of
3 l+ K* B. A# ^& U4 I$ iMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
- j# N0 c" t/ @1 }) \5 T9 H# ze-mail: [email protected].2 o8 @! u5 N4 z
about 6 to 7 months old, which progressively became) h7 E6 p( G2 `. U9 M
darker. She was also concerned about the enlarge-
3 b. n2 e" ?6 ~1 Z# ~ment of his penis and frequent erections. The child1 S9 b; ~: [( [/ L
was the product of a full-term normal delivery, with& h, {6 O: p) z: ]& H9 U
a birth weight of 7 lb 14 oz, and birth length of
5 T0 y9 T7 @/ n1 a20 inches. He was breast-fed throughout the first year. p- }$ `& k- K7 P, I
of life and was still receiving breast milk along with
* S/ x9 h4 O. [- K8 F. Vsolid food. He had no hospitalizations or surgery,; n2 E# N _; |7 p
and his psychosocial and psychomotor development& \8 Y: D7 K4 L e6 G
was age appropriate.0 B9 d9 c9 f" ]5 B. h
The family history was remarkable for the father,# ^; m+ |8 @- V4 X1 B: n% o
who was diagnosed with hypothyroidism at age 16,0 ~8 v/ b4 o& I$ n
which was treated with thyroxine. The father’s
- Y. G4 F9 R- g6 m$ {height was 6 feet, and he went through a somewhat
7 }( ^- b8 m5 bearly puberty and had stopped growing by age 14.- q: Q2 s2 D* }% N6 R1 O
The father denied taking any other medication. The2 \- q _- W5 a$ d0 x* L
child’s mother was in good health. Her menarche
: R# B7 Y* c: xwas at 11 years of age, and her height was at 5 feet
) l- P, e& U4 K% `5 inches. There was no other family history of pre-/ N8 R7 K& }. `- ^, Z* Y
cocious sexual development in the first-degree rela-
3 J: o/ o4 h1 e+ ~4 I# ~tives. There were no siblings.
) Y. d1 k. Z( b& d$ s1 ]& {Physical Examination
# f: ~. z3 M3 L! k$ qThe physical examination revealed a very active,
" P5 M) K, b0 L$ ^) |: x) Y9 yplayful, and healthy boy. The vital signs documented
0 X3 ^( D6 x+ V" p- @' U% r% Ca blood pressure of 85/50 mm Hg, his length was
* @2 d) B7 w T* d0 h90 cm (>97th percentile), and his weight was 14.4 kg6 w" z( K; N5 I' e
(also >97th percentile). The observed yearly growth; h3 P6 a; ^% j+ K8 i/ ]+ g
velocity was 30 cm (12 inches). The examination of
: }, @5 P% ?4 @- ^. o3 l- Bthe neck revealed no thyroid enlargement.
+ z$ {; m8 y& V9 rThe genitourinary examination was remarkable for
3 O5 z$ O. x O% @enlargement of the penis, with a stretched length of: g: i1 E2 v2 \5 W @/ Q2 [, J }
8 cm and a width of 2 cm. The glans penis was very well
W: t# [1 A& {6 v' F3 _; A5 Bdeveloped. The pubic hair was Tanner II, mostly around
/ H4 p1 l6 y$ B5 o540
# a$ f: A3 v. H; Sat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
$ M( g) n6 Z/ `the base of the phallus and was dark and curled. The% M2 Q, O( G" C5 c8 s$ h& M
testicular volume was prepubertal at 2 mL each.0 n2 B1 ?* T- g
The skin was moist and smooth and somewhat* T, ~1 Y5 g: R4 k% @- s
oily. No axillary hair was noted. There were no
. \1 B1 E2 O+ f" ~' ?abnormal skin pigmentations or café-au-lait spots.5 q! c% I. I+ G9 q6 X8 X
Neurologic evaluation showed deep tendon reflex 2+
1 f3 _) {9 ~4 d" E9 O; nbilateral and symmetrical. There was no suggestion
! K9 u6 I E2 xof papilledema.! U( u/ n5 F+ P* F/ z
Laboratory Evaluation
. l, O& L G: `/ R( {- M& z# `/ xThe bone age was consistent with 28 months by
) X5 F5 \/ {# y, B+ J1 ?+ Musing the standard of Greulich and Pyle at a chrono-
7 F9 L M$ x+ a Z ylogic age of 16 months (advanced).5 Chromosomal
$ `1 J ?( A5 F- Jkaryotype was 46XY. The thyroid function test
# f" P |8 x$ e/ Jshowed a free T4 of 1.69 ng/dL, and thyroid stimu-
$ a* j$ _( S& Z- [lating hormone level was 1.3 µIU/mL (both normal).
, t- T* U g6 i; m- v2 {7 K8 mThe concentrations of serum electrolytes, blood
- g( F; Z2 s; Q% {urea nitrogen, creatinine, and calcium all were9 d1 h& N! G$ g
within normal range for his age. The concentration
, Z0 t3 ~- b+ B5 Nof serum 17-hydroxyprogesterone was 16 ng/dL3 h+ J2 Q8 b# [ g
(normal, 3 to 90 ng/dL), androstenedione was 20
( [, \2 I# a* f+ D1 Xng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-1 \- ^; @: b0 D( ?5 u# \
terone was 38 ng/dL (normal, 50 to 760 ng/dL),
( |3 V5 M4 k# N8 o+ `9 o, c( Udesoxycorticosterone was 4.3 ng/dL (normal, 7 to9 f$ A& C1 O4 y. I, e* Q0 D
49ng/dL), 11-desoxycortisol (specific compound S)5 R# m. S- |9 a+ d
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
6 z8 T6 F, r( Y# \tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total/ Y X: ~/ O) K) v. G0 V! s
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),: h! y, [) U1 `3 S2 P' a$ O
and β-human chorionic gonadotropin was less than
' ]. m) e* r( Q. W# c |5 mIU/mL (normal <5 mIU/mL). Serum follicular w0 t9 ~: b# Z
stimulating hormone and leuteinizing hormone. V) h; Q. R! h6 B/ D! E
concentrations were less than 0.05 mIU/mL
+ M" G3 b% j6 K, Y(prepubertal).
+ c2 g4 {- H- | R: o+ N: QThe parents were notified about the laboratory
4 M) u, F" e2 I& k0 Bresults and were informed that all of the tests were0 z2 a3 B; C6 Y. t( t
normal except the testosterone level was high. The
& w( x) {; e; }& _9 Z: jfollow-up visit was arranged within a few weeks to' F0 _4 g; o+ O* i
obtain testicular and abdominal sonograms; how-3 i& l6 W. H* n2 P9 j
ever, the family did not return for 4 months.
) h7 z7 o, p# U2 P8 tPhysical examination at this time revealed that the
9 @) Q9 F. t, Q% B3 ^: C* q# Cchild had grown 2.5 cm in 4 months and had gained
, ^0 R1 k1 _) J# s) }2 kg of weight. Physical examination remained
+ h7 b9 R( r7 i( vunchanged. Surprisingly, the pubic hair almost com-
* c! t) `8 \5 s0 G: f& Wpletely disappeared except for a few vellous hairs at& T+ J8 C+ n( q
the base of the phallus. Testicular volume was still 2
: O0 \( F+ _ \- LmL, and the size of the penis remained unchanged.: d( [% k7 w2 k) }/ |( u/ d
The mother also said that the boy was no longer hav-$ w7 x: o4 O- Z- K; F* P
ing frequent erections.: f; k, a9 |4 R4 F/ X6 Q
Both parents were again questioned about use of
! _( q: w2 e- I; O! pany ointment/creams that they may have applied to0 K, j# \5 _1 Z# L
the child’s skin. This time the father admitted the' r |4 I8 e' `7 {" J: D) u( g% x+ M
Topical Testosterone Exposure / Bhowmick et al 541
6 n* N- b5 C; b% p" s; q7 uuse of testosterone gel twice daily that he was apply-
) t5 v' g+ u7 D9 e/ T/ _ing over his own shoulders, chest, and back area for0 Z; q5 N* n/ U" O. O7 D3 I, p
a year. The father also revealed he was embarrassed6 p( _. _9 H3 _
to disclose that he was using a testosterone gel pre-& L; [& z) Z k$ |4 h% ~* |( h
scribed by his family physician for decreased libido2 H& K3 B6 J8 M3 B
secondary to depression.
2 T) j% Y5 P6 k L- HThe child slept in the same bed with parents.
3 \" z+ n, b& r9 L- wThe father would hug the baby and hold him on his3 `" w8 |3 V, O A( v' P- V" W
chest for a considerable period of time, causing sig-
B, a5 A$ [# Z' i$ Inificant bare skin contact between baby and father.
1 M2 B& w( `4 n! Y9 x. LThe father also admitted that after the phone call,
& |' ^3 e! m0 g8 @when he learned the testosterone level in the baby
- g$ [$ {& x: Y8 rwas high, he then read the product information
/ H7 ~; O. D2 upacket and concluded that it was most likely the rea-
z: k3 p" I, k7 ?2 F' e4 X" Mson for the child’s virilization. At that time, they2 m Z, b7 w+ }6 \8 I0 s
decided to put the baby in a separate bed, and the; A6 `& g% |/ D. ]- i
father was not hugging him with bare skin and had4 H$ D1 j# {+ y) w' b
been using protective clothing. A repeat testosterone1 m$ U6 y5 B" c& U1 x0 Y
test was ordered, but the family did not go to the
# l! P, [6 x2 E: U2 d' Xlaboratory to obtain the test.
; s4 E7 F) J" h' Q2 BDiscussion7 v4 R U5 D: f& y7 w9 ^
Precocious puberty in boys is defined as secondary
8 j, O; @$ E5 q6 i. Asexual development before 9 years of age.1,4+ z, q( f4 ?' \- X6 A
Precocious puberty is termed as central (true) when$ r' F# j9 | L8 {# a: W
it is caused by the premature activation of hypo-9 ^# J! A- Q6 q0 l" a, B
thalamic pituitary gonadal axis. CPP is more com-" J I1 a! {- {) n
mon in girls than in boys.1,3 Most boys with CPP! {3 {6 H) R0 |1 B" x" f# I- q" h
may have a central nervous system lesion that is
' K2 p6 _7 j8 S. J) Lresponsible for the early activation of the hypothal-- K2 z+ h6 Q$ |( ]: B
amic pituitary gonadal axis.1-3 Thus, greater empha-' I) C/ h- y) |3 [4 W3 U8 I
sis has been given to neuroradiologic imaging in( {3 ~6 V2 U8 R9 ~$ u6 w$ r
boys with precocious puberty. In addition to viril-
: m$ z$ r* ]$ o+ x& o; eization, the clinical hallmark of CPP is the symmet-
: E9 r: f. V7 Y3 k. R- }! V9 ^rical testicular growth secondary to stimulation by2 d. }# J8 A0 \6 H$ p% I9 o! f! s
gonadotropins.1,3& Q6 H2 }9 \3 x2 y3 z! }- C
Gonadotropin-independent peripheral preco-
7 H4 |. S& ~4 ucious puberty in boys also results from inappropriate
8 u0 l5 }' h; x+ P, k, Handrogenic stimulation from either endogenous or, f, U. V; I; s
exogenous sources, nonpituitary gonadotropin stim-1 Q$ w- {# E. a# L$ X+ |# J
ulation, and rare activating mutations.3 Virilizing0 s6 Y( o5 `2 K5 `( i- s! _8 F* f
congenital adrenal hyperplasia producing excessive
6 r: @/ E% I( n. k6 ~' C( Madrenal androgens is a common cause of precocious
0 @" r; z* K* Npuberty in boys.3,4
s% F1 Y+ g/ O) Y% U& t3 L( u# |The most common form of congenital adrenal* n. L) T; g* t& h
hyperplasia is the 21-hydroxylase enzyme deficiency.4 R+ o- e* w5 J0 ~
The 11-β hydroxylase deficiency may also result in
; ?$ y- H; N4 sexcessive adrenal androgen production, and rarely,
4 y( U3 l" P. U( Y& [4 d! Uan adrenal tumor may also cause adrenal androgen' ~( f$ v/ ?3 t; q, C+ }1 g. Y8 J
excess.1,3# K( a; v _5 t$ Z
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from/ y8 n5 }" f9 A- s
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007& T* f3 J: H. g8 b9 V* I. F
A unique entity of male-limited gonadotropin-
, [9 C2 n4 }9 ^. w+ p% nindependent precocious puberty, which is also known$ ?/ c6 o7 i! b! V' z' t
as testotoxicosis, may cause precocious puberty at a
* a- B: O7 F [very young age. The physical findings in these boys
& Z8 F8 s8 i; [3 \: {3 z: kwith this disorder are full pubertal development,
U9 I; f X1 y |( M/ Y' Z. P( b4 Eincluding bilateral testicular growth, similar to boys6 e2 r2 w; n+ O( _
with CPP. The gonadotropin levels in this disorder
c& e: V/ G" \# @+ N3 yare suppressed to prepubertal levels and do not show
8 L: }% l5 d5 C5 m8 Q: w1 R1 Cpubertal response of gonadotropin after gonadotropin-) G+ Y1 f N6 a1 U# H: O
releasing hormone stimulation. This is a sex-linked$ K5 P+ ~1 K$ [: E$ R+ D6 O
autosomal dominant disorder that affects only
i& T3 Z2 z- _+ C" A! wmales; therefore, other male members of the family4 z& ]' ~9 ?( ] I! K
may have similar precocious puberty.3' M0 v* B% @( l1 n& b, y+ x
In our patient, physical examination was incon-& g$ ~& F3 n$ l0 o r4 c
sistent with true precocious puberty since his testi-
) N0 i$ V: R1 P0 ~- G! |( a- @cles were prepubertal in size. However, testotoxicosis0 K; V( C3 N( J; x8 @ c* V. o6 s
was in the differential diagnosis because his father$ Y5 g9 f8 g' ]* Y( N
started puberty somewhat early, and occasionally,9 M$ w; T5 f0 [5 i
testicular enlargement is not that evident in the
: H' C1 m7 j4 Abeginning of this process.1 In the absence of a neg-
# X6 z% Z" |% M- Z' G+ @; [. oative initial history of androgen exposure, our
2 U1 w1 S, w" a6 k: \8 p* a/ ybiggest concern was virilizing adrenal hyperplasia,+ m0 \2 X4 |* ~6 ~+ j0 B4 w0 N
either 21-hydroxylase deficiency or 11-β hydroxylase( ]- Y( Y+ T7 Q5 |1 M* {1 L" }- O0 I% N
deficiency. Those diagnoses were excluded by find-
+ g$ Q) w' W# \+ z1 e$ j1 i/ O1 ming the normal level of adrenal steroids.
% p7 S7 g0 N% X: n, ? [$ ?The diagnosis of exogenous androgens was strongly
+ C( N$ D" E$ i0 f2 H2 ysuspected in a follow-up visit after 4 months because
6 B6 A% a' Y5 h) Cthe physical examination revealed the complete disap-% r+ _7 P, L& ]) a0 P) B
pearance of pubic hair, normal growth velocity, and
" o0 Q) T i+ z- L1 b0 d$ X3 Tdecreased erections. The father admitted using a testos-2 w- h6 E0 U5 m$ ~( v$ C
terone gel, which he concealed at first visit. He was
& P0 T' m& \& Yusing it rather frequently, twice a day. The Physicians’
1 k( H: x/ [* J; wDesk Reference, or package insert of this product, gel or
0 d- e1 w! p6 y, J3 V* |8 X d& x8 B! Scream, cautions about dermal testosterone transfer to
1 B" k4 K* ~, z- x" qunprotected females through direct skin exposure., c1 U) p( |* ~& [$ v1 d
Serum testosterone level was found to be 2 times the! W0 A7 a5 b4 z5 W. E1 K1 f
baseline value in those females who were exposed to$ e+ K4 ^ S4 f, a" _* s
even 15 minutes of direct skin contact with their male* B0 [* j( P* c% m
partners.6 However, when a shirt covered the applica-
, ?* B$ [/ ~) E9 k/ btion site, this testosterone transfer was prevented.
" y8 ]0 t- V+ f, XOur patient’s testosterone level was 60 ng/mL,% j% X2 u% b+ Q, t
which was clearly high. Some studies suggest that
0 q! Q F1 H2 g) E( T) o4 W7 n' U9 kdermal conversion of testosterone to dihydrotestos-
& T3 k" D0 p: b A: p9 Cterone, which is a more potent metabolite, is more
; M7 ~7 [& Y) k p2 Uactive in young children exposed to testosterone
5 A" c% P9 s/ P; j# Hexogenously7; however, we did not measure a dihy-
+ k8 x) c) V4 V8 p6 i4 Hdrotestosterone level in our patient. In addition to, X7 [# N0 Y2 {! \4 Z- H+ R8 N. t
virilization, exposure to exogenous testosterone in
- ? L2 y! ^: j, G; w9 A' Jchildren results in an increase in growth velocity and/ L0 N: V4 L! I9 u0 p8 a) v1 u% z
advanced bone age, as seen in our patient.& ~3 O& O( R/ C+ }# y
The long-term effect of androgen exposure during) m9 R! h/ p1 x% }
early childhood on pubertal development and final% O3 y- j$ a$ {. T/ {0 H# p
adult height are not fully known and always remain
9 \: ?3 e& p# W3 w2 [. t3 H: ma concern. Children treated with short-term testos- z) c$ Y' \2 f/ r9 f
terone injection or topical androgen may exhibit some. G! d9 V% L8 P' M% r1 `0 I* Q. ^
acceleration of the skeletal maturation; however, after! ~+ U4 e# G) K4 Z3 M: }
cessation of treatment, the rate of bone maturation! L D, i8 P6 B
decelerates and gradually returns to normal.8,9
$ E. h) Z8 b( |9 {; EThere are conflicting reports and controversy- t+ {1 N6 j/ X
over the effect of early androgen exposure on adult2 ]! Q- b# N2 n2 I
penile length.10,11 Some reports suggest subnormal
3 C& E+ h0 I8 F# [adult penile length, apparently because of downreg-) D1 `% c7 D Q' M& n& Y- \
ulation of androgen receptor number.10,12 However,) |2 I0 y: G. l, b4 T$ u+ a
Sutherland et al13 did not find a correlation between
7 O2 X& o. T- R- U; nchildhood testosterone exposure and reduced adult) i# @9 l4 W3 U: {; M7 C3 E3 n0 [! i
penile length in clinical studies.
4 Y. e$ c0 L9 g) }5 k- D y0 kNonetheless, we do not believe our patient is
# D: v: t+ ~% [4 ygoing to experience any of the untoward effects from% X& L$ g# G. }
testosterone exposure as mentioned earlier because
% E" n: z5 c% rthe exposure was not for a prolonged period of time.
9 \( ?. S H( |7 r6 j( A% n- KAlthough the bone age was advanced at the time of& L' t2 ]4 M3 V! Y: _% x
diagnosis, the child had a normal growth velocity at
0 S- c0 U8 C3 k9 C3 E5 Zthe follow-up visit. It is hoped that his final adult
n1 Q1 ~* A, h' R. g1 Kheight will not be affected.
2 C5 l$ _& T4 t) vAlthough rarely reported, the widespread avail-
7 k* n: A5 T4 @7 `! {6 gability of androgen products in our society may
) C; l6 F& W$ B6 k Y# L: Bindeed cause more virilization in male or female! R5 P. S- ], }% _" g" i/ c
children than one would realize. Exposure to andro-
+ l4 U% m! W) R2 n1 u% dgen products must be considered and specific ques-
' H% Q/ U0 v5 r( p& otioning about the use of a testosterone product or& _# p B6 S% `- D u& }
gel should be asked of the family members during- ]0 n" A5 e; i+ A7 Q
the evaluation of any children who present with vir-
. v- g+ C' T* L) [! \ilization or peripheral precocious puberty. The diag-
+ W) q% S3 I1 Q# x/ e- d4 U4 t. R+ B' ]nosis can be established by just a few tests and by
( t) d9 T U) _appropriate history. The inability to obtain such a( \7 f4 P0 x' x5 R! I" N
history, or failure to ask the specific questions, may8 W3 x1 L. i. u( p3 m8 `
result in extensive, unnecessary, and expensive
7 _$ n5 J: w0 ^9 T% w( Finvestigation. The primary care physician should be
& u+ x) w: r/ e' K+ e# Aaware of this fact, because most of these children
) b @: {0 d) L lmay initially present in their practice. The Physicians’; B7 h6 p$ U3 X; k: [& m0 G
Desk Reference and package insert should also put a8 b0 c6 l# `7 U: D
warning about the virilizing effect on a male or' y: x: d% G5 c) p
female child who might come in contact with some-
- V) r% S+ ]3 o; Pone using any of these products.
$ u. @* P* {& CReferences9 k) ]1 u h1 N2 p8 [/ c3 {: h
1. Styne DM. The testes: disorder of sexual differentiation
- ?1 j8 Q+ b* a$ X, D iand puberty in the male. In: Sperling MA, ed. Pediatric O$ t: R1 v0 Y: R) q+ x
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;6 R; q- X, c J9 ^8 ~( {% T
2002: 565-628.; q" t* R2 I' }! l! }) P# `2 M
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
0 h" V( V% \* z4 U* r) apuberty in children with tumours of the suprasellar pineal1 F$ W; i- t' I% `% L* f4 U
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from) e5 q8 D. J% \" {: g
Topical Testosterone Exposure / Bhowmick et al 543
( h Y9 [7 y- h' ` U) yareas: organic central precocious puberty. Acta Paediatr.9 [- N2 ~3 O( b. Z
2001;90:751-756." E; D: s4 ^9 D" C
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.8 b' O$ ~( o$ w- @0 Q( k
Pediatric Endocrinology. 4th ed. New York, NY: Marcel
# f6 t; q& H$ G+ K5 z& a$ W9 }- x6 P' KDekker Inc; 2003:211-238.5 b% q" @- c/ j
4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
: S3 K; w" U' s, Zdevelopment in a two-year-old boy induced by topical! d: }/ N1 i; `" d7 ?( B/ O' P
exposure to testosterone. Pediatrics. 1999;104:e23.3 _( Z; s; F0 N t9 l
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
8 h3 }: o$ x& |" ]* E: ^Skeletal Development of the Hand and Wrist. 2nd ed.
+ s: s8 Z) N( L0 ^/ QStanford, CA: Stanford University Press; 1959.: e( h) X3 W/ c5 X- M; \' r6 `
6. Physicians’ Desk Reference. Androgel 1% testosterone,0 g T; \# m' Y/ M% v4 M
Unimed Pharmaceutical Inc. Montvale, NJ: Medical
7 W6 Y3 d+ h" P4 t' SEconomics Company, Inc; 2004:3239-3241.( e$ o# V/ M/ j5 ~
7. Klugo RC, Cerny JC. Response of micropenis to topical- N! T/ F3 h/ u( @& v0 A- S5 G+ o
testosterone and gonadotropin. J Urol. 1978;119:
% ]6 r, l( Q/ B! {6 x8 L4 A t" O6 R667-668.
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