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is a significant concern for physicians. Central7 F7 } r+ |! |: m5 t- u
precocious puberty (CPP), which is mediated
8 q* l# Y: D+ S, F R tthrough the hypothalamic pituitary gonadal axis, has; K' F9 _! Q& q; Z
a higher incidence of organic central nervous system! |" @$ G2 w4 _. D
lesions in boys.1,2 Virilization in boys, as manifested+ Y" L% @# u3 \+ C8 w) r
by enlargement of the penis, development of pubic" T& f: K& n5 b' @3 q
hair, and facial acne without enlargement of testi-& g3 g4 C9 F1 |: b* O3 p6 q
cles, suggests peripheral or pseudopuberty.1-3 We
2 c' T2 s# Q7 M8 mreport a 16-month-old boy who presented with the
' ~" d) {, H$ R: `9 y7 ienlargement of the phallus and pubic hair develop-! o1 o2 t8 y0 r
ment without testicular enlargement, which was due
, a- u0 L* x$ ^% Eto the unintentional exposure to androgen gel used by( P' S8 S% d* w0 A2 @4 ~9 }: O0 B
the father. The family initially concealed this infor- |" R$ \7 d0 \0 b! [$ q
mation, resulting in an extensive work-up for this) \2 H) g: U" C
child. Given the widespread and easy availability of
2 Y0 J4 e* }$ a2 ~testosterone gel and cream, we believe this is proba-
# Q e+ l8 a" H5 A! s2 n0 e H' Cbly more common than the rare case report in the% l# G' r x7 \" T! l) l3 r
literature.4# z: S7 a2 {. M# G
Patient Report9 e; o& }2 v: {- I$ w- f# c. C
A 16-month-old white child was referred to the( h0 a7 ]3 G+ k ~1 e
endocrine clinic by his pediatrician with the concern( Q8 H- U3 q$ b; s
of early sexual development. His mother noticed
6 u' x* V4 O5 N- r7 T3 s8 p/ \light colored pubic hair development when he was( C ^+ s6 I( q+ R
From the 1Division of Pediatric Endocrinology, 2University of' B" J0 E0 G: o( K4 m" P* k9 P/ w
South Alabama Medical Center, Mobile, Alabama.
/ I3 C$ U+ t$ _3 L' [9 eAddress correspondence to: Samar K. Bhowmick, MD, FACE,
$ f" [* Q0 m( h5 {8 w: lProfessor of Pediatrics, University of South Alabama, College of. B. g; ^' A8 R6 U3 p4 R' M
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;* J* g# _3 W7 h; ]5 j
e-mail: [email protected].; T; f# C8 f1 t) Q6 `: G
about 6 to 7 months old, which progressively became5 u6 Z- e4 ~/ F5 q
darker. She was also concerned about the enlarge-4 o/ a# s$ D3 N5 f1 Z; A! t
ment of his penis and frequent erections. The child
* @! l& u" Q+ S& B- u5 s7 t! Dwas the product of a full-term normal delivery, with" G0 W z" J+ q
a birth weight of 7 lb 14 oz, and birth length of; j! _( t8 p1 D( F0 [4 n& [ q" ~
20 inches. He was breast-fed throughout the first year" Q8 l2 }& d% `- n
of life and was still receiving breast milk along with
3 z% j# ]1 h4 Psolid food. He had no hospitalizations or surgery,% l! X+ K( z8 C9 ~; w
and his psychosocial and psychomotor development4 E7 @9 Z5 H# X0 x
was age appropriate.
J7 n& ?* `! F$ sThe family history was remarkable for the father,3 C4 n, G9 A7 D% u* f- ]% H: t2 z
who was diagnosed with hypothyroidism at age 16,
8 Z5 Q1 {: |1 Z9 j7 k5 ywhich was treated with thyroxine. The father’s
" P3 I1 q3 U; g- b1 cheight was 6 feet, and he went through a somewhat9 e! `8 w5 v! D9 l
early puberty and had stopped growing by age 14.
6 M, p/ s: u) Y0 F: RThe father denied taking any other medication. The
6 q3 y8 e0 k- r `child’s mother was in good health. Her menarche
7 y3 Z6 M/ A/ f( N: lwas at 11 years of age, and her height was at 5 feet* \2 Z, N& q# Y* P, L
5 inches. There was no other family history of pre-: s9 h1 Y% A* o3 {6 o; c- \; c
cocious sexual development in the first-degree rela-
; X6 @7 R$ L: y# e, u* ytives. There were no siblings.
% r, C* Q/ A! G: [; s4 \) APhysical Examination1 z; ]/ K& L7 K# X k' a1 Z. O4 A" r
The physical examination revealed a very active,
- r, D$ ]; W( y Yplayful, and healthy boy. The vital signs documented
+ ?7 J: C- q& J+ q# va blood pressure of 85/50 mm Hg, his length was2 A) y o7 V7 J* n. i6 d
90 cm (>97th percentile), and his weight was 14.4 kg$ m5 x6 E# [# @4 e, I0 q
(also >97th percentile). The observed yearly growth* W3 M' k, O5 [% G
velocity was 30 cm (12 inches). The examination of7 N/ Z+ Y9 o& }5 M) t
the neck revealed no thyroid enlargement.. G& E S! d T' @
The genitourinary examination was remarkable for3 s; B# ]5 K/ s) F: a: N, @
enlargement of the penis, with a stretched length of1 |! b% E; {6 ?- A, {3 a
8 cm and a width of 2 cm. The glans penis was very well
9 G- ?/ W: j fdeveloped. The pubic hair was Tanner II, mostly around
4 O2 Q* _/ n+ j* k+ p% U/ n& N+ a5401 e" K' E H6 g7 g
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
- \8 Z* e L# _2 B: |the base of the phallus and was dark and curled. The4 _" F% [( ?6 i0 j0 c9 q7 l
testicular volume was prepubertal at 2 mL each.5 F# C# }% j; B7 j- c
The skin was moist and smooth and somewhat
9 v. G& u, g& Boily. No axillary hair was noted. There were no4 A5 O; r& o5 B9 x
abnormal skin pigmentations or café-au-lait spots.
4 u" ~7 F, B8 h8 XNeurologic evaluation showed deep tendon reflex 2+* i$ V( |& |3 ^6 D+ @
bilateral and symmetrical. There was no suggestion* w2 ^$ j- `' u( K" u
of papilledema.
5 m! Q* w1 D* j) D# XLaboratory Evaluation- y( k* l+ [& c# {2 x1 K5 a
The bone age was consistent with 28 months by
4 @# M' o2 y# y7 V3 Cusing the standard of Greulich and Pyle at a chrono-( l" X% k/ I" S
logic age of 16 months (advanced).5 Chromosomal
3 g5 o5 @% q+ Y4 N1 Bkaryotype was 46XY. The thyroid function test
& |; T# k; ?3 }: K7 qshowed a free T4 of 1.69 ng/dL, and thyroid stimu-
/ j) K( F0 P7 p. x0 T( J# m' Alating hormone level was 1.3 µIU/mL (both normal).
/ V; Q+ ~+ e0 u! ?$ ~The concentrations of serum electrolytes, blood0 |# o! c6 P% E
urea nitrogen, creatinine, and calcium all were
* p. m. E% _% |# Lwithin normal range for his age. The concentration
7 P% Q4 A$ y/ t' J2 b0 Y0 h6 Bof serum 17-hydroxyprogesterone was 16 ng/dL- C6 _8 n5 G& V- D% Q
(normal, 3 to 90 ng/dL), androstenedione was 20
# t' @7 V9 ~( |ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
1 A& `" e0 Q5 W' b aterone was 38 ng/dL (normal, 50 to 760 ng/dL),6 j9 o* ?7 b" m. [3 y7 x2 ~
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
( r6 L/ R9 F, D: s3 g49ng/dL), 11-desoxycortisol (specific compound S)( W* ^+ p- p# K! r
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-" `! R& N$ I) k) S" G
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total/ E8 n1 n2 N* i# l9 p9 t9 [
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
; b3 z* ^0 V i4 v; i% `and β-human chorionic gonadotropin was less than
9 J. J' E0 e% E( e: K; I5 mIU/mL (normal <5 mIU/mL). Serum follicular$ v5 \" R: R1 ^2 S6 q. m
stimulating hormone and leuteinizing hormone
2 S1 n9 t- U# Wconcentrations were less than 0.05 mIU/mL
- Y2 D) `# {1 x( _: H3 B(prepubertal).! L: l; \6 O" q$ [5 S ^" }
The parents were notified about the laboratory
8 H) F$ X' j0 {+ i/ d/ }+ _results and were informed that all of the tests were
5 O8 S1 k! T( i2 Y8 Q" Dnormal except the testosterone level was high. The# ^5 E2 K N- X
follow-up visit was arranged within a few weeks to
8 Q! n8 {/ C. Q( ~/ }obtain testicular and abdominal sonograms; how-& _- n1 G: `3 Y2 C( i
ever, the family did not return for 4 months.
- u* e: W* y @: q- e& c" yPhysical examination at this time revealed that the
/ T! o& A: b1 P/ _3 Gchild had grown 2.5 cm in 4 months and had gained2 k/ V3 L" B5 Z; h3 a! [0 t' V
2 kg of weight. Physical examination remained
$ {, [+ t: ~, c, ]! C6 h: F' iunchanged. Surprisingly, the pubic hair almost com-
/ T3 B3 b8 ~! B" Zpletely disappeared except for a few vellous hairs at
[! V8 b& N. Z' Pthe base of the phallus. Testicular volume was still 2
3 m+ |- X6 E: b! G: Z. FmL, and the size of the penis remained unchanged.
! k* e! \$ U& h) a2 ~3 {The mother also said that the boy was no longer hav-
+ p. Y/ C, ~$ _6 C- {6 ling frequent erections.. o. L( N5 n0 M
Both parents were again questioned about use of, o) l8 c* `7 k( x0 A8 g
any ointment/creams that they may have applied to
$ C0 g- K* C, S3 ]/ X( }' Rthe child’s skin. This time the father admitted the1 F( p* R- j3 x
Topical Testosterone Exposure / Bhowmick et al 5411 a; u. G/ P" ?
use of testosterone gel twice daily that he was apply-0 G" K/ |; P: j! ~! V1 o/ K8 x
ing over his own shoulders, chest, and back area for
' `8 ~. j$ o. ta year. The father also revealed he was embarrassed
- p) D E+ c. R! U: _: wto disclose that he was using a testosterone gel pre-) L8 ~+ Q1 L8 S
scribed by his family physician for decreased libido
; g0 p) W5 o2 @5 u2 C, x! msecondary to depression.
# J* b, ?. k' g7 E) w. E$ D+ @The child slept in the same bed with parents.$ s8 H9 i [( u3 R) G1 u
The father would hug the baby and hold him on his
4 ^/ G4 T& s! Q4 {chest for a considerable period of time, causing sig-
1 q- H: u" w: E' }, Q! Onificant bare skin contact between baby and father.
4 h/ F5 ], ^5 m6 XThe father also admitted that after the phone call,
) Q3 ^ \6 m+ c. ^: w9 Ywhen he learned the testosterone level in the baby& k i" M/ h6 ?, f9 x/ B
was high, he then read the product information
6 m6 v0 W( S xpacket and concluded that it was most likely the rea-( D1 w: L. x4 z+ {1 d
son for the child’s virilization. At that time, they
) A1 l5 t- t$ k3 p0 }3 R7 g( j% Cdecided to put the baby in a separate bed, and the. b2 z, y) ?8 ~
father was not hugging him with bare skin and had% W. p1 B* p% y( w P1 ]
been using protective clothing. A repeat testosterone
) i: d% W3 J9 p* b* Dtest was ordered, but the family did not go to the
/ S% t4 X1 }; t7 R+ v' Q' G0 klaboratory to obtain the test.
" ~$ R: r0 q9 L1 A5 _& K. n( I9 ~Discussion
7 I" e4 N0 O! gPrecocious puberty in boys is defined as secondary
! K! J" F& f+ D# Y: i" @& Lsexual development before 9 years of age.1,4
0 N* c# g+ X3 h3 ?6 a' u9 GPrecocious puberty is termed as central (true) when, {$ Q2 M4 {# k" @
it is caused by the premature activation of hypo-$ x2 Z- q; n; h o0 R" W
thalamic pituitary gonadal axis. CPP is more com-. W6 k! i- L- L; _7 M! a7 L( G4 N( _
mon in girls than in boys.1,3 Most boys with CPP
* H y: Q' d$ I. k! ^" A# A9 dmay have a central nervous system lesion that is
0 v! j% A! A! Q, f oresponsible for the early activation of the hypothal-
5 [/ ? `$ i; r1 R0 P damic pituitary gonadal axis.1-3 Thus, greater empha-
! Z3 e; T. v' d: k* O/ I# C- F3 msis has been given to neuroradiologic imaging in5 @" H i* I0 K1 N- k
boys with precocious puberty. In addition to viril-
6 x* ? s: A9 g* F* yization, the clinical hallmark of CPP is the symmet-4 R" l. `5 i9 b; f8 O
rical testicular growth secondary to stimulation by
( Q& b: ?1 _- U7 Ogonadotropins.1,34 ^8 H: c9 b7 R$ y
Gonadotropin-independent peripheral preco- F- o1 e) \: f+ x- P6 W
cious puberty in boys also results from inappropriate. x4 A9 g$ t- Z. V( t
androgenic stimulation from either endogenous or6 t& J# a; A- o, T5 r0 ^
exogenous sources, nonpituitary gonadotropin stim-
& ^. s, g5 g0 Tulation, and rare activating mutations.3 Virilizing
$ S' x. y* I4 S& T* Z" Rcongenital adrenal hyperplasia producing excessive
0 b& p) T( {+ k! r/ aadrenal androgens is a common cause of precocious
3 w( o* F" M$ Ypuberty in boys.3,4
( }: \1 M+ S( i7 lThe most common form of congenital adrenal
7 P6 S. N/ F6 J, Q% @+ h; N1 K: x0 ohyperplasia is the 21-hydroxylase enzyme deficiency.
9 S: r: ? X8 \( K: Q1 e: l! ]% HThe 11-β hydroxylase deficiency may also result in
0 {6 h% V* q3 L, c3 u3 I% E* v! s9 Aexcessive adrenal androgen production, and rarely,
" z$ R1 A6 N# j, kan adrenal tumor may also cause adrenal androgen
4 c5 @4 w$ q, S4 Rexcess.1,3
y4 X7 n. n6 ?) m" y8 jat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
, X2 z* L7 L! f7 [* s542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
: x5 e* w7 Q% `. T, Y6 ~, nA unique entity of male-limited gonadotropin-8 j) U5 p2 y! @7 Q& d
independent precocious puberty, which is also known
" V: R1 A9 q/ ]/ ]as testotoxicosis, may cause precocious puberty at a
' i( o) l: ~- d! J9 ` `& A* B8 a8 bvery young age. The physical findings in these boys
; v f; ~0 n; e! T0 Pwith this disorder are full pubertal development,; w- D+ h g# a$ @6 R# ^
including bilateral testicular growth, similar to boys# k& r# u5 s% I4 D7 z
with CPP. The gonadotropin levels in this disorder
/ j2 e; o( I6 E& X; I# _1 ?' k3 Dare suppressed to prepubertal levels and do not show
; ]5 t8 D; q; F+ s3 ppubertal response of gonadotropin after gonadotropin-
& x8 Q5 p" E8 N4 ?- T8 H/ l0 ?releasing hormone stimulation. This is a sex-linked
0 s( ~4 l/ Q7 m* L& N! `$ |) Aautosomal dominant disorder that affects only
+ G' \4 O' a: Q S4 Cmales; therefore, other male members of the family
0 Y0 p$ I7 f [$ ?1 Q6 Z" omay have similar precocious puberty.3
% R+ ?) ^+ K. I3 V' v/ YIn our patient, physical examination was incon-
* L# A% u2 x+ J: B& h( O# H% E6 bsistent with true precocious puberty since his testi-/ B3 A7 e! e- `. t n7 ~
cles were prepubertal in size. However, testotoxicosis
' n$ q# J5 f3 l# h$ nwas in the differential diagnosis because his father
% G( A# p; i H Ystarted puberty somewhat early, and occasionally,
4 c7 {, e8 [0 n0 v9 I e& jtesticular enlargement is not that evident in the
, \5 [; e0 K% K8 Ibeginning of this process.1 In the absence of a neg-( s, f( b. Z) r+ v, g8 s9 G) b
ative initial history of androgen exposure, our+ G" C+ F+ w v8 z% V! u! I" V
biggest concern was virilizing adrenal hyperplasia,
5 ^; w0 |0 n0 q* qeither 21-hydroxylase deficiency or 11-β hydroxylase
* ?7 C8 O+ n1 l2 x/ |% t' edeficiency. Those diagnoses were excluded by find-
, e* n! W1 N9 g5 U, a9 v- Sing the normal level of adrenal steroids.
6 D5 s) \" i; cThe diagnosis of exogenous androgens was strongly' W9 A+ F' H ~2 {1 h
suspected in a follow-up visit after 4 months because
/ n) W% H& `- B( t' D8 x/ B% ithe physical examination revealed the complete disap-* Z" a" i0 r- H+ {, r1 _% Q$ R: I
pearance of pubic hair, normal growth velocity, and# h& i* M& [& v# }
decreased erections. The father admitted using a testos-+ k3 t* r& H8 G9 D
terone gel, which he concealed at first visit. He was
' z7 l- g" R! o, ^$ Ausing it rather frequently, twice a day. The Physicians’/ V; J5 J+ x: b: Y- {3 A
Desk Reference, or package insert of this product, gel or/ Y7 Q+ j g1 }( q0 b
cream, cautions about dermal testosterone transfer to3 L/ i; w, u/ K$ W
unprotected females through direct skin exposure." r3 ~- Q6 c4 T/ B) h3 P
Serum testosterone level was found to be 2 times the) |6 _# C. ~) g* n
baseline value in those females who were exposed to3 B1 q) e- u" I5 r2 y" }
even 15 minutes of direct skin contact with their male1 R7 _4 @2 A! o3 u
partners.6 However, when a shirt covered the applica-
+ t1 J8 D$ S* g: d+ E% w# U+ [tion site, this testosterone transfer was prevented.
$ K: [$ v( Z9 l0 a! s+ ?9 O( \Our patient’s testosterone level was 60 ng/mL,: q, B. N& |% D2 y$ l
which was clearly high. Some studies suggest that
/ z0 i" X" G. a6 |( P% s" W5 Rdermal conversion of testosterone to dihydrotestos-
( r X; `+ S v$ ?terone, which is a more potent metabolite, is more% f: m, h2 S# o. A% M
active in young children exposed to testosterone0 f3 _' s8 x, F/ q" L
exogenously7; however, we did not measure a dihy-
9 E. C3 U) ^& m, d adrotestosterone level in our patient. In addition to
y0 p6 y+ m6 A7 V4 s: {# ovirilization, exposure to exogenous testosterone in ?6 R: m. U! ^) o
children results in an increase in growth velocity and
' ]% O) [ j( madvanced bone age, as seen in our patient.% @8 T) P& T# p$ q3 X0 E+ e
The long-term effect of androgen exposure during5 t8 @2 `. v. z1 z9 B! R% l
early childhood on pubertal development and final
5 s; I3 l. I& j, h$ ^+ J6 eadult height are not fully known and always remain) N2 G7 t* g+ C6 j8 H
a concern. Children treated with short-term testos-
4 b- A- k6 x9 _; }* C) z* y5 @terone injection or topical androgen may exhibit some) |8 N1 S* l+ k* r, C* [5 |
acceleration of the skeletal maturation; however, after
* z+ R8 t6 P2 \cessation of treatment, the rate of bone maturation% }- U- e! @7 V& ~ P* I
decelerates and gradually returns to normal.8,9
: _9 y; C/ f; J6 d$ ~ RThere are conflicting reports and controversy' f( @( S) B9 M2 r9 X1 T
over the effect of early androgen exposure on adult
6 Q$ E0 R+ a4 q, s4 E0 A2 a( d$ M0 ~penile length.10,11 Some reports suggest subnormal
: w; ~/ n. }: @adult penile length, apparently because of downreg-
7 M/ \& I1 P, _1 x: z" W9 F* T3 hulation of androgen receptor number.10,12 However,- d7 ?+ i* E4 f: @% X% Q
Sutherland et al13 did not find a correlation between1 r: J, v- k8 B# O& p5 A/ k
childhood testosterone exposure and reduced adult
6 o% w: C; I! G& |* O6 vpenile length in clinical studies.
8 `$ q3 D0 |$ |0 C. j+ ^Nonetheless, we do not believe our patient is* K% W, ?8 R: F$ V3 u0 @
going to experience any of the untoward effects from3 ^: j. Y$ h; _ {
testosterone exposure as mentioned earlier because& i* a) O1 u. N6 j$ t
the exposure was not for a prolonged period of time.
+ [3 G& V) T' e7 T8 L4 nAlthough the bone age was advanced at the time of
8 W F$ o: K6 Sdiagnosis, the child had a normal growth velocity at
, v3 \' D+ P1 |the follow-up visit. It is hoped that his final adult i4 C8 _! X+ X% N# J
height will not be affected.& s" ]& g" s% Q7 r/ C n
Although rarely reported, the widespread avail-
" }5 S3 X2 J% X6 {: d- S) V8 Y8 M, nability of androgen products in our society may/ P0 ~" W& y2 r6 Y U$ F
indeed cause more virilization in male or female
1 M3 @9 f% ~. g& rchildren than one would realize. Exposure to andro-
! I8 @1 m% u: v7 hgen products must be considered and specific ques-
! J7 O: r9 R3 z$ ntioning about the use of a testosterone product or
% X$ b5 {; ?, g6 e" rgel should be asked of the family members during; L ~/ X2 P4 N' D/ e
the evaluation of any children who present with vir-+ h$ z/ x; H6 `
ilization or peripheral precocious puberty. The diag-) }- ]3 T7 l2 F8 W: q( \
nosis can be established by just a few tests and by
" n; K9 N" v5 o+ b. zappropriate history. The inability to obtain such a
% b, t# g8 `/ C. Z/ c* j+ phistory, or failure to ask the specific questions, may3 Z b- Q: C! G1 k: _+ U: J2 Y
result in extensive, unnecessary, and expensive
. X8 f1 o5 I: g' {; _investigation. The primary care physician should be
k9 J3 D9 y# g$ S& K5 Z0 \5 Naware of this fact, because most of these children
2 w! d: G2 M6 E7 xmay initially present in their practice. The Physicians’
* i9 a: @, l9 ^3 lDesk Reference and package insert should also put a
, x# I. n- o: f8 N+ dwarning about the virilizing effect on a male or6 J. v, ?4 r1 H* C; `
female child who might come in contact with some-4 L+ o* ~) }* B6 @
one using any of these products. c3 q% E/ J7 g
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+ ?: X% C- ?2 |- g a3 v2 K& M1. Styne DM. The testes: disorder of sexual differentiation
! |. V H9 T0 ^% Z% G5 N& u+ Nand puberty in the male. In: Sperling MA, ed. Pediatric
% ~$ ?' D, Q, o* l2 l) ~) D7 NEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;; a. C" B h3 v! g
2002: 565-628.( ^2 F2 ~- b2 e7 \( s$ \. E
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious4 A5 _' n& v& z! v' B9 c/ ]
puberty in children with tumours of the suprasellar pineal
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. p. G3 p/ j, |5 m3 J" {areas: organic central precocious puberty. Acta Paediatr.# d% S i- z4 w5 H
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; t( D9 b Y: z) f/ d: Q4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual1 j! N3 Y& K! h Q6 d
development in a two-year-old boy induced by topical. ]! o+ W7 ], ]
exposure to testosterone. Pediatrics. 1999;104:e23.
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Stanford, CA: Stanford University Press; 1959.8 v# r( m6 t5 W& G7 n1 Z$ v1 d; D
6. Physicians’ Desk Reference. Androgel 1% testosterone,
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Economics Company, Inc; 2004:3239-3241.4 J/ e, l( [0 f! A
7. Klugo RC, Cerny JC. Response of micropenis to topical
! H6 H, [+ c7 S+ F5 Ttestosterone and gonadotropin. J Urol. 1978;119:$ L: n8 [/ D3 v8 a
667-668.- U- T5 j! J; f
8. Guthrie RD, Smith DW, Graham CB. Testosterone: b0 ?' Y6 ~& N2 b9 G/ R
treatment for micropenis during early childhood. J Pediatr.
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