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is a significant concern for physicians. Central
5 R4 k4 B, c3 H5 Sprecocious puberty (CPP), which is mediated
; y# n' P0 D" n6 h5 |; o8 Ithrough the hypothalamic pituitary gonadal axis, has% R+ N' d$ c' D2 x* V2 w
a higher incidence of organic central nervous system% L* s+ g5 D4 |: b$ a" [# y6 ?; N
lesions in boys.1,2 Virilization in boys, as manifested
# g2 a7 U% f2 Q9 w" s" c8 G1 ?by enlargement of the penis, development of pubic# ? \, G* I5 u4 Z q6 }
hair, and facial acne without enlargement of testi-: P1 |1 M! m7 x9 ~5 [
cles, suggests peripheral or pseudopuberty.1-3 We: b7 |$ W* r" Q- F; {
report a 16-month-old boy who presented with the
% r9 b% `2 f$ x. ~enlargement of the phallus and pubic hair develop-
0 U% X. C* X1 @" b/ j, `ment without testicular enlargement, which was due2 t* d' n2 i; o) J* [4 u
to the unintentional exposure to androgen gel used by
- y% O, s& ]" _the father. The family initially concealed this infor-
5 p5 @' [1 t" n3 o4 Y5 _0 Z( Imation, resulting in an extensive work-up for this) m! A$ w. I Q% k6 P; H6 M
child. Given the widespread and easy availability of" s2 k9 k, `/ X
testosterone gel and cream, we believe this is proba-
3 k) m- ]# @: n' ^bly more common than the rare case report in the
# n/ o$ {9 C7 D4 |# nliterature.4. t2 i8 {/ L- t2 b
Patient Report( P3 d9 l( h, o7 w" i) e" J
A 16-month-old white child was referred to the( M5 }/ P2 x Q( q
endocrine clinic by his pediatrician with the concern$ W; c/ d1 M; v: {9 h
of early sexual development. His mother noticed7 Z' ?, B/ Q! R2 m
light colored pubic hair development when he was
/ L4 l4 w4 L% d$ RFrom the 1Division of Pediatric Endocrinology, 2University of
% `1 W4 T2 \# I6 A0 }# { k+ tSouth Alabama Medical Center, Mobile, Alabama.3 G( o0 X% a% n
Address correspondence to: Samar K. Bhowmick, MD, FACE,8 ~ Z- G% \: @, }5 x. o
Professor of Pediatrics, University of South Alabama, College of) J0 ~. |- k; U1 s0 G; v/ F" l9 z3 G
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;& C3 A; d/ B* O# u& Z
e-mail: [email protected]. R$ t. N$ V: E& y7 c2 F% D; X
about 6 to 7 months old, which progressively became; v+ P2 ]# R6 I9 `) |2 y
darker. She was also concerned about the enlarge-% [- c' T6 o: g" H
ment of his penis and frequent erections. The child0 g. I: E& C% _
was the product of a full-term normal delivery, with" A* c4 F! f6 v7 ^
a birth weight of 7 lb 14 oz, and birth length of2 c( V7 k4 q( @6 n( o" \1 H
20 inches. He was breast-fed throughout the first year. O2 f4 g S) H
of life and was still receiving breast milk along with0 ]0 e$ E* i9 T5 a" p: B' R
solid food. He had no hospitalizations or surgery,
/ n* d# v. b; gand his psychosocial and psychomotor development, t3 B W# A* x2 l8 \" {9 j3 |
was age appropriate.; r( }' N* g+ n" i& N
The family history was remarkable for the father,! }0 x6 Q# R4 ^0 C2 x
who was diagnosed with hypothyroidism at age 16,
2 V3 G# o5 e1 p# |7 mwhich was treated with thyroxine. The father’s
c: ?8 n- Z* B$ D |" S$ Hheight was 6 feet, and he went through a somewhat
7 h4 |% ]; {" }) E. E# ^early puberty and had stopped growing by age 14.) ]) u2 p- y9 g0 H# w; t/ Q2 Z$ e
The father denied taking any other medication. The: C3 ?0 m% r* z1 x
child’s mother was in good health. Her menarche g- W& j* T- D" D0 Q- j
was at 11 years of age, and her height was at 5 feet$ Z6 P6 ?: e5 c# z* K& ]5 e. [
5 inches. There was no other family history of pre-& Z, q- h6 s8 |5 i8 J1 E
cocious sexual development in the first-degree rela-! x6 [, J) G6 ]0 ^5 [
tives. There were no siblings.
/ t& D Q4 d" s t9 tPhysical Examination( Z2 S+ p ~ B
The physical examination revealed a very active,
# J( Z: C/ N/ t3 jplayful, and healthy boy. The vital signs documented' v) R1 u! W* h# j: x
a blood pressure of 85/50 mm Hg, his length was
6 a% ?9 M0 X) ?' s% C1 ~90 cm (>97th percentile), and his weight was 14.4 kg
" T2 F7 D+ j" j9 r1 L(also >97th percentile). The observed yearly growth
, b) k& f, M, _5 I3 t$ Zvelocity was 30 cm (12 inches). The examination of
6 E0 }) h K* _& qthe neck revealed no thyroid enlargement.
" r- c7 @6 @, A' _+ ?& y' FThe genitourinary examination was remarkable for
) N+ O# [& w4 u* a3 O+ T7 Z1 |. ~enlargement of the penis, with a stretched length of
6 _7 U8 I- O/ ^% l9 g8 cm and a width of 2 cm. The glans penis was very well q( f5 y9 z5 [- m
developed. The pubic hair was Tanner II, mostly around% z" P+ K2 m, J' U- E
540; v* ~- L+ ?; g. F- X
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
. C* |1 t( x- _; s. y! Vthe base of the phallus and was dark and curled. The
1 I% r1 I* v1 {- r5 m8 Htesticular volume was prepubertal at 2 mL each., M& `9 u, [$ }$ | F8 C }
The skin was moist and smooth and somewhat
5 @; s4 p( M1 I: k$ Aoily. No axillary hair was noted. There were no! Z# H1 ]. l: v! G) Q
abnormal skin pigmentations or café-au-lait spots.
F1 ~1 T$ U; s! t- V9 t! ?Neurologic evaluation showed deep tendon reflex 2+ d9 H& a9 w2 P: \! i- F% N
bilateral and symmetrical. There was no suggestion2 W- w2 w( y$ d2 j; m. O( l2 t
of papilledema.& g' f! z8 [4 M$ A/ t# w
Laboratory Evaluation
6 ^2 N8 m% l \2 ~ t3 {The bone age was consistent with 28 months by4 }% a* X5 E+ w% p: S
using the standard of Greulich and Pyle at a chrono-
1 ^2 J' a( g2 P; A9 o F. \# p, Mlogic age of 16 months (advanced).5 Chromosomal
! X/ k7 P( G2 c0 R9 q' Hkaryotype was 46XY. The thyroid function test
" U1 Y0 p, m8 r, qshowed a free T4 of 1.69 ng/dL, and thyroid stimu-
% d+ R. V% y8 _6 wlating hormone level was 1.3 µIU/mL (both normal)." X0 f7 z8 e- ^" {) Z0 w; D
The concentrations of serum electrolytes, blood
: \ s3 H. \- T0 Durea nitrogen, creatinine, and calcium all were
o. U9 A) B1 ^. z j xwithin normal range for his age. The concentration
, J. Z! u6 T" @of serum 17-hydroxyprogesterone was 16 ng/dL
' r0 B* c9 p' P( E0 M" }! }(normal, 3 to 90 ng/dL), androstenedione was 203 d# c m8 t# O( J, V- r
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-5 H* w5 I( y) t9 I
terone was 38 ng/dL (normal, 50 to 760 ng/dL),
! V1 `) Q8 Y4 cdesoxycorticosterone was 4.3 ng/dL (normal, 7 to( f: R* s! D2 b) z8 f, o6 S
49ng/dL), 11-desoxycortisol (specific compound S)5 D# ?% e* h+ A7 c9 C- D+ ?. \/ f% Y
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
# i1 l& {9 @* _ {/ r& h) W f, T5 Ltisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total2 ?4 a7 s5 _" q) |' c
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
3 i. J; q! @0 P7 s: @% o, o$ @5 xand β-human chorionic gonadotropin was less than
6 e U& {" l. R5 mIU/mL (normal <5 mIU/mL). Serum follicular
5 H0 P# C6 r4 {! F- o5 C) xstimulating hormone and leuteinizing hormone
9 n# N' q& ~0 mconcentrations were less than 0.05 mIU/mL
: u: y& q0 I" d1 ~: C9 g( X' W5 R5 Y(prepubertal).% u0 [/ X$ e1 [, [% e1 H. m! V; m
The parents were notified about the laboratory, y G& s ^2 }
results and were informed that all of the tests were
# \9 q3 M( o- \6 w5 z4 a4 H2 f$ pnormal except the testosterone level was high. The
4 j% q# k# `2 g) s0 _9 ~follow-up visit was arranged within a few weeks to
/ Y1 M, I/ o4 x/ E1 U5 q" q3 Eobtain testicular and abdominal sonograms; how-
- l0 g1 h5 ?; ]ever, the family did not return for 4 months.! l& c% ~6 j9 i# n
Physical examination at this time revealed that the
# ?+ l' T8 s& achild had grown 2.5 cm in 4 months and had gained7 d# q" W1 V, v5 u
2 kg of weight. Physical examination remained
: \, _4 F1 o% ~" s% T2 Funchanged. Surprisingly, the pubic hair almost com-
% R7 j, z" @, v; o; cpletely disappeared except for a few vellous hairs at* H! ^- {5 @! n
the base of the phallus. Testicular volume was still 2( D& I1 r3 z0 }& r5 z
mL, and the size of the penis remained unchanged.
! V6 \% H8 ?7 b# c5 Y6 BThe mother also said that the boy was no longer hav-) B! n& C7 E& \! R9 `) ~$ D9 B
ing frequent erections.- K; n' ~' N. n- l6 }4 K! K0 W
Both parents were again questioned about use of, x9 G* [" b* B4 T( V
any ointment/creams that they may have applied to5 S3 }+ }4 s/ W; [6 N( a
the child’s skin. This time the father admitted the
$ P3 s* O, U4 q/ _# n' H% b5 STopical Testosterone Exposure / Bhowmick et al 541
% F- F# K. R) X2 _use of testosterone gel twice daily that he was apply-$ k1 O& i* k; Y, q) I
ing over his own shoulders, chest, and back area for0 E) p. [3 I" U
a year. The father also revealed he was embarrassed( F [6 z7 I+ N, \# }+ I
to disclose that he was using a testosterone gel pre-. `1 ?6 ^5 W4 Y1 n) P- H) _
scribed by his family physician for decreased libido
- l6 T1 a' F; L9 C5 y. m- `secondary to depression.
: I5 @, i" n- V6 kThe child slept in the same bed with parents.
- W# X' v" |* v! o% v9 _The father would hug the baby and hold him on his
. _5 h* a9 G' f3 Bchest for a considerable period of time, causing sig-4 s" t* ?7 L9 l: @: ]
nificant bare skin contact between baby and father.
& ~7 z( ]! L, r! d* d. B" Y* X# X& U# lThe father also admitted that after the phone call,
0 I( i. ?2 w$ W6 \4 rwhen he learned the testosterone level in the baby s2 j6 t$ y" W
was high, he then read the product information1 L q3 J4 ]4 M4 w; W1 p: `6 D5 g
packet and concluded that it was most likely the rea-
% l! O0 a: d2 W$ {- Xson for the child’s virilization. At that time, they4 G1 @, L6 ^6 Y
decided to put the baby in a separate bed, and the; l5 d9 i' P% F" W# e5 J
father was not hugging him with bare skin and had
. }7 y: b# A1 L- U# Ebeen using protective clothing. A repeat testosterone/ [, g( }4 ^) I+ h$ K
test was ordered, but the family did not go to the4 r: [9 } l6 A
laboratory to obtain the test.8 Q. ?7 d2 f$ U! b( j0 q
Discussion
( a+ {% E5 H3 dPrecocious puberty in boys is defined as secondary. F+ ^/ [' S, M0 F, e2 C
sexual development before 9 years of age.1,4; m) ^* `, U/ ?$ p. }
Precocious puberty is termed as central (true) when, W; i5 G/ O) T! |9 G
it is caused by the premature activation of hypo-1 ]+ O! Y' G& i, D0 ^
thalamic pituitary gonadal axis. CPP is more com-* q# L" X6 S" P
mon in girls than in boys.1,3 Most boys with CPP
' A1 s) D2 N# ^7 O/ l* ~& H$ jmay have a central nervous system lesion that is
- h- P$ \) o! e# W$ X2 hresponsible for the early activation of the hypothal-
7 K# F4 u( s+ I9 m2 v1 \, ?amic pituitary gonadal axis.1-3 Thus, greater empha-
- k& C) }# Z2 z+ ~sis has been given to neuroradiologic imaging in6 \6 T* u# A" I+ w* ~8 L( a/ O" ?
boys with precocious puberty. In addition to viril-
( K8 q3 t9 g8 W0 Vization, the clinical hallmark of CPP is the symmet-, }+ c; z {8 y2 x3 C
rical testicular growth secondary to stimulation by
3 q( ^9 b. X) L9 q* ngonadotropins.1,3) a- ?4 p4 v4 r l' [/ D" w4 j- W4 s
Gonadotropin-independent peripheral preco-9 y$ d m" Z0 s% H# |( x
cious puberty in boys also results from inappropriate
2 h& [" s) T$ I: i, z, `7 vandrogenic stimulation from either endogenous or
3 R# E+ z' k* U, ?exogenous sources, nonpituitary gonadotropin stim-
! C9 U7 _2 u Z% gulation, and rare activating mutations.3 Virilizing
9 h& l$ x2 q" T' ncongenital adrenal hyperplasia producing excessive
1 M& N3 @9 K) c8 p' ~adrenal androgens is a common cause of precocious
5 M4 k5 Y- Y" w7 E: b# A6 cpuberty in boys.3,45 C" H1 k9 Q, [) \! n
The most common form of congenital adrenal
" l9 t$ ~3 i% _# L. _( [hyperplasia is the 21-hydroxylase enzyme deficiency.
8 z) m& l8 W& ?, R: ]& E: pThe 11-β hydroxylase deficiency may also result in
1 s" U: p' H. Z* p) M# L6 cexcessive adrenal androgen production, and rarely,
0 K7 V9 D* d$ ban adrenal tumor may also cause adrenal androgen6 }1 R9 ]$ ~ a- Z
excess.1,3, @' f/ w: _( R. u' Z- A9 a
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from6 r* S$ Y d; r! J' N
542 Clinical Pediatrics / Vol. 46, No. 6, July 20077 C) x# }: T1 e. q9 |6 h2 L) H
A unique entity of male-limited gonadotropin-
. I$ S/ p, L8 i' N2 b! D! tindependent precocious puberty, which is also known
4 E& Y% t* M% a. W' f j; ^as testotoxicosis, may cause precocious puberty at a
4 q# Y: u& \2 i1 V/ M) \very young age. The physical findings in these boys# m6 i5 _3 x) I8 a& ]6 x, B7 \% s
with this disorder are full pubertal development,! u8 R+ y4 }3 F5 [
including bilateral testicular growth, similar to boys
8 |* Y8 x( g9 V0 x: [with CPP. The gonadotropin levels in this disorder
/ Z' \" ^1 q$ Z7 c2 e: f8 jare suppressed to prepubertal levels and do not show
: o+ j, ` O; x! I Dpubertal response of gonadotropin after gonadotropin-
: ?& |! M a( ^2 Q7 Hreleasing hormone stimulation. This is a sex-linked
7 b. Q: ]1 v4 U( F4 \+ {autosomal dominant disorder that affects only6 M) y9 m( I9 q: y
males; therefore, other male members of the family
# y. {+ p. s( m" k+ D* Lmay have similar precocious puberty.3& c% E3 o. g% }
In our patient, physical examination was incon-
; N9 d1 d: X. }' Y9 l# F, i- e2 t( gsistent with true precocious puberty since his testi-
, v6 t9 r6 B/ }4 B& gcles were prepubertal in size. However, testotoxicosis
, i( g* ^" S4 | t P3 X, ?# q: Jwas in the differential diagnosis because his father
" Q! ]3 Z3 Z% @started puberty somewhat early, and occasionally,. V$ S( d1 w/ |
testicular enlargement is not that evident in the
6 V9 R- f: s2 ~/ e' jbeginning of this process.1 In the absence of a neg-) x8 Z% z% N4 C# C$ Y1 D
ative initial history of androgen exposure, our0 }% ?6 `1 C" W+ L
biggest concern was virilizing adrenal hyperplasia,
7 o+ @5 Z7 i$ i V% H! Reither 21-hydroxylase deficiency or 11-β hydroxylase
0 I/ t2 D0 \5 Y# |deficiency. Those diagnoses were excluded by find-& V) _$ Z( b) r' \
ing the normal level of adrenal steroids.
$ G5 n+ i. K+ t& lThe diagnosis of exogenous androgens was strongly
& r& A/ M. o( a+ w: Q m; A! g9 Xsuspected in a follow-up visit after 4 months because
* z* n7 I/ ^! D' K3 vthe physical examination revealed the complete disap-
: ^" ?# R) N2 V- L" l epearance of pubic hair, normal growth velocity, and
: k$ k t, s* x' i! f: Vdecreased erections. The father admitted using a testos-
% U. e; z# G4 u p% i. K+ Uterone gel, which he concealed at first visit. He was
, w4 |( c8 o E! {# A4 {using it rather frequently, twice a day. The Physicians’
. k. v6 I, G# _5 O2 lDesk Reference, or package insert of this product, gel or+ w+ ?- I- d; L! A* T* |
cream, cautions about dermal testosterone transfer to
$ i. N# e- D( i8 p* n3 i. S% ?unprotected females through direct skin exposure.2 Z7 b$ J: t0 p8 h& s
Serum testosterone level was found to be 2 times the
7 p7 M2 B2 w1 b u: Fbaseline value in those females who were exposed to9 J @: \) [! q& I# X0 j) t
even 15 minutes of direct skin contact with their male' C. l7 a' c! _) f! ~& y8 [+ b( m
partners.6 However, when a shirt covered the applica-
' S3 k0 \, d) s0 w% |, stion site, this testosterone transfer was prevented.
% u3 i1 b$ I8 D* j* q9 G9 G0 S# WOur patient’s testosterone level was 60 ng/mL,8 w: p. |$ Y! R P4 T) r
which was clearly high. Some studies suggest that
- g* R2 z8 D1 Y) g6 x& n& i bdermal conversion of testosterone to dihydrotestos-4 r2 v$ P% ?! s* n8 r
terone, which is a more potent metabolite, is more( ?$ o/ Y% {' w
active in young children exposed to testosterone2 @# j2 p6 k# n# W5 r/ c3 i
exogenously7; however, we did not measure a dihy-
: j. J% T. t) j3 r1 y4 O9 zdrotestosterone level in our patient. In addition to8 D7 ]. H5 c$ T' ?0 E4 z( Q, l
virilization, exposure to exogenous testosterone in+ S& N& p$ t" t, B. g
children results in an increase in growth velocity and6 H9 V$ k( a0 g7 B2 j
advanced bone age, as seen in our patient.; g- l# ^: O" `8 ~
The long-term effect of androgen exposure during
6 d+ D6 N9 q' Y Searly childhood on pubertal development and final+ G( L& n3 h' ?3 _( v: l
adult height are not fully known and always remain; _) M) R1 y$ v6 Y0 k" x
a concern. Children treated with short-term testos-6 O- ]$ N' p' V D$ ?# w
terone injection or topical androgen may exhibit some* c, b6 A' n6 Q3 g) d
acceleration of the skeletal maturation; however, after* w3 }% n% }# ?0 o( y
cessation of treatment, the rate of bone maturation
% \4 p# l; N6 T8 N6 S0 x3 J7 adecelerates and gradually returns to normal.8,91 j6 h/ D# l2 t2 J. p
There are conflicting reports and controversy/ a( y; n6 H* y5 s0 r9 E# r- a
over the effect of early androgen exposure on adult
& ^, M1 W$ n, {. ?* _2 D7 y5 F% jpenile length.10,11 Some reports suggest subnormal
+ u' R9 }8 y- N$ t, }1 e0 Dadult penile length, apparently because of downreg-# |- v! K5 x' L/ k
ulation of androgen receptor number.10,12 However,0 {3 |4 T! K& Y: o! M3 }" a
Sutherland et al13 did not find a correlation between
6 N" X: T6 r& ~/ [6 ]childhood testosterone exposure and reduced adult" [) d$ ~+ c: B7 d
penile length in clinical studies.
0 X; F- i) k1 M, INonetheless, we do not believe our patient is$ _ t- M o1 O
going to experience any of the untoward effects from
6 w$ Z* P8 J1 F& K7 k6 b% itestosterone exposure as mentioned earlier because
' g% w) C+ c, }, `, s/ ?% |1 Mthe exposure was not for a prolonged period of time.# o; P& [/ j7 J$ S
Although the bone age was advanced at the time of
% L# R( Z9 {( d; X6 mdiagnosis, the child had a normal growth velocity at
7 S7 P* P( n3 B: @the follow-up visit. It is hoped that his final adult6 ?( b7 f2 Q$ m* m, s4 O
height will not be affected.
0 b& w9 K6 C/ q4 L8 W: w5 T% DAlthough rarely reported, the widespread avail-
: s) N5 C+ u# s4 {9 x( \ability of androgen products in our society may
7 Q7 C) I9 N$ j5 v9 ]indeed cause more virilization in male or female- m: @ H( d# O( @. ]/ n
children than one would realize. Exposure to andro-
3 ^# z$ u- h& r [' V# @ D* g8 Zgen products must be considered and specific ques-: e# ?* M3 P7 T" ]: ]9 U
tioning about the use of a testosterone product or, f! F7 l( M% _. p( u
gel should be asked of the family members during* Q; f: I- d% u7 ^' f
the evaluation of any children who present with vir-$ D S6 ~; z3 j `/ m- b
ilization or peripheral precocious puberty. The diag-' b; m6 @( K8 x* \
nosis can be established by just a few tests and by
' l7 \& ?% X# ^appropriate history. The inability to obtain such a/ ]4 |9 f) v& n3 m* V3 p4 A
history, or failure to ask the specific questions, may
: g; e/ U" K! u5 c' Gresult in extensive, unnecessary, and expensive6 D* o' _ G+ t1 M; l/ [- b
investigation. The primary care physician should be
; w9 E( X) ~5 X% r$ p' Taware of this fact, because most of these children* D% ?8 `; ?' B& X' Y1 ?" i
may initially present in their practice. The Physicians’0 t/ [& h, j3 Z I! N. ]1 j5 _, t
Desk Reference and package insert should also put a- i5 d" \# z0 m) ?/ _" `$ g- e8 u
warning about the virilizing effect on a male or
" C% a/ I) b# p0 Mfemale child who might come in contact with some-
; X- Y" H) f ^, T: Cone using any of these products.
% \+ x' l$ G8 ]3 A; iReferences+ L. k% Q; Y$ Z- s
1. Styne DM. The testes: disorder of sexual differentiation
6 Y- H4 k% i; P; Kand puberty in the male. In: Sperling MA, ed. Pediatric( U% b! y" S/ R- g
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;( g9 g) Q4 v3 u: }9 i1 {6 B# F
2002: 565-628.
: K- V$ i7 Y7 W1 u- {- ~2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious$ F1 b* `# [1 ]7 \4 I, P0 P4 \
puberty in children with tumours of the suprasellar pineal p% Y* t5 ^1 ^$ P& F& }
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areas: organic central precocious puberty. Acta Paediatr.4 W) a% E6 w* h
2001;90:751-756.
7 P- z# [7 C& z+ J3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed./ O# n$ u1 ]0 C" E/ V
Pediatric Endocrinology. 4th ed. New York, NY: Marcel, w8 m; L+ X$ R
Dekker Inc; 2003:211-238.
1 C8 x7 s" N a: g& B0 E4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual8 w4 g3 Q+ C1 m' w/ x! q4 b- K* ?
development in a two-year-old boy induced by topical. f1 G9 ^& P" e, v% L
exposure to testosterone. Pediatrics. 1999;104:e23.9 j+ _# a0 ^( H5 K% c
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
$ E# P' \, G e$ HSkeletal Development of the Hand and Wrist. 2nd ed.
' W5 J$ f4 R( c1 G. \3 U, _# f6 oStanford, CA: Stanford University Press; 1959./ T' S i4 d+ }4 A+ z
6. Physicians’ Desk Reference. Androgel 1% testosterone,8 t( Y, p. Q% W; w+ C6 K
Unimed Pharmaceutical Inc. Montvale, NJ: Medical
% m! @+ k- N0 q# Y) G2 zEconomics Company, Inc; 2004:3239-3241.+ r" Y8 ?, J! K( I9 h1 m
7. Klugo RC, Cerny JC. Response of micropenis to topical! S" C% N3 w. P8 B& T2 ^! L
testosterone and gonadotropin. J Urol. 1978;119:
1 i( J4 F8 g0 m& s667-668.. r& O$ S: q: e+ F0 J
8. Guthrie RD, Smith DW, Graham CB. Testosterone
' [1 K* ~6 C5 P9 \0 \: q! qtreatment for micropenis during early childhood. J Pediatr.5 N/ \/ j8 x/ [- X8 R" m6 n! o
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