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is a significant concern for physicians. Central0 W, w& \: R4 X' K, r3 _( e
precocious puberty (CPP), which is mediated/ `! A0 C& h2 z
through the hypothalamic pituitary gonadal axis, has* b; E0 b/ i3 N% y; v! t
a higher incidence of organic central nervous system! ~) e+ ^5 F8 a% i: t1 A
lesions in boys.1,2 Virilization in boys, as manifested
/ W; S7 k5 P/ v4 O3 ]' @by enlargement of the penis, development of pubic
+ e( @! o2 Q* l! U8 \/ ?( mhair, and facial acne without enlargement of testi-, w; j3 {% [& D/ ]8 z& J# m
cles, suggests peripheral or pseudopuberty.1-3 We Y9 b9 d) s4 ]1 @5 r& k
report a 16-month-old boy who presented with the
- |/ R+ ~5 n. h* v" R. |enlargement of the phallus and pubic hair develop-) r/ g% K+ Z! `7 q4 Q
ment without testicular enlargement, which was due. j0 d" a, h, u- x6 c( O/ {% T. ~
to the unintentional exposure to androgen gel used by
5 }, Q/ A5 Y! K- F2 R( Ythe father. The family initially concealed this infor-! z3 n( Y1 v$ @5 y2 h
mation, resulting in an extensive work-up for this
6 T% x3 a0 I0 E" j( }child. Given the widespread and easy availability of2 t/ B8 [) ~* z
testosterone gel and cream, we believe this is proba-
0 D( D+ [' B8 S, D% O" Fbly more common than the rare case report in the1 {3 E {) a7 B% z3 @* O; h
literature.4
: e4 x+ Y6 Z+ b7 [8 u+ VPatient Report7 m/ p& a" Z# g
A 16-month-old white child was referred to the
. W6 Q% U7 m0 F: w% w7 [8 x% lendocrine clinic by his pediatrician with the concern6 X0 M) }/ J3 H7 C" W* |
of early sexual development. His mother noticed+ `3 m2 u& z* y; g% Q
light colored pubic hair development when he was
/ E& `) k- q+ K$ i6 @+ _! @From the 1Division of Pediatric Endocrinology, 2University of
& v5 f- K* ]. GSouth Alabama Medical Center, Mobile, Alabama.( i( J6 K' w q. J! K
Address correspondence to: Samar K. Bhowmick, MD, FACE,
( z( q4 g7 z: V# G8 B7 e7 v" aProfessor of Pediatrics, University of South Alabama, College of. o' O8 v3 W2 u- T9 Y, G& [1 u
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
8 _( e( @" H1 U2 se-mail: [email protected].) P" |$ Q' V& X# z
about 6 to 7 months old, which progressively became3 `2 c/ }1 _- x% ^4 T5 R
darker. She was also concerned about the enlarge-
6 }1 a0 b( R5 [% W, V* k0 `: gment of his penis and frequent erections. The child- l9 ]* E' g" S( N! {
was the product of a full-term normal delivery, with
8 U; M9 l \+ W6 \0 Sa birth weight of 7 lb 14 oz, and birth length of
8 ~8 X. H" Q8 [4 j' X4 G. G) a20 inches. He was breast-fed throughout the first year0 M2 ~; w; B* x- i5 B; P* |
of life and was still receiving breast milk along with% ?) y# C# T; P$ w3 B
solid food. He had no hospitalizations or surgery,- g8 V5 u" f3 D5 I8 D* k& }
and his psychosocial and psychomotor development$ }* _& g- t/ j0 A+ d
was age appropriate.8 M! u8 Y4 Y; n. H# n9 t+ @1 Y
The family history was remarkable for the father,+ P0 O; K$ \) p1 P/ P
who was diagnosed with hypothyroidism at age 16,6 E' X1 d2 V: r/ l3 f, j: E
which was treated with thyroxine. The father’s! R9 e N' \7 h V! f! Y5 F
height was 6 feet, and he went through a somewhat- e+ O& D9 U' L2 g Z5 ?
early puberty and had stopped growing by age 14.% ] [! T* b4 B2 o* G/ e# P
The father denied taking any other medication. The
% w9 V: Y. M1 Q$ E7 Pchild’s mother was in good health. Her menarche
7 n1 g5 Y& A2 i) [/ L+ Mwas at 11 years of age, and her height was at 5 feet ?! C! S" y, G
5 inches. There was no other family history of pre-
6 T: i. L, G4 M9 mcocious sexual development in the first-degree rela-
, I2 Z+ Z$ H1 Q$ S- U& ~tives. There were no siblings.& P+ J! ~1 r1 }0 \
Physical Examination
, }, ~+ A" @/ E8 s! ZThe physical examination revealed a very active,
9 d. i( N( K9 u: e, A& Uplayful, and healthy boy. The vital signs documented& K+ ]! V2 L/ S) o% s: }
a blood pressure of 85/50 mm Hg, his length was& {* R6 |1 j$ K$ S* I
90 cm (>97th percentile), and his weight was 14.4 kg
7 X E# F' U# k5 v. v(also >97th percentile). The observed yearly growth
+ r; o! r/ L6 w: E- X1 }velocity was 30 cm (12 inches). The examination of8 s$ ]/ R; Y" L% y E
the neck revealed no thyroid enlargement.
6 _: K1 Q8 S, {# k# n" TThe genitourinary examination was remarkable for5 `( m* f4 \4 {# j9 _
enlargement of the penis, with a stretched length of# i8 r* n. Y. M4 {1 C2 z& V
8 cm and a width of 2 cm. The glans penis was very well
' I, B: _; Q$ t! Cdeveloped. The pubic hair was Tanner II, mostly around
" h7 P0 n$ d8 q$ M* s. Z7 r540+ p& u# q4 t# g5 V7 u- _# ]5 C
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
% K3 C+ u, v4 I' g$ E7 S% Othe base of the phallus and was dark and curled. The
: x2 ^* k; o7 o3 t5 xtesticular volume was prepubertal at 2 mL each.
! e9 W8 r; n* U LThe skin was moist and smooth and somewhat
1 e% x% ]4 B- D/ T4 Coily. No axillary hair was noted. There were no
3 _) }0 o: x% m* yabnormal skin pigmentations or café-au-lait spots.
+ V& C; Z6 _( i! }+ ZNeurologic evaluation showed deep tendon reflex 2+
2 Q3 ]2 z7 A) w b B0 A5 Z9 G% Gbilateral and symmetrical. There was no suggestion
1 J% y, v2 }5 {- m7 b$ Hof papilledema.
7 @. W! M' m( O$ A/ T( a# Y$ {Laboratory Evaluation
% r' r; ^% x3 p2 u8 aThe bone age was consistent with 28 months by
6 v+ w: T, T0 J- W( ]9 i3 uusing the standard of Greulich and Pyle at a chrono-
! j! e6 ~) P. ologic age of 16 months (advanced).5 Chromosomal
* w+ L: u$ Z; @4 j2 Bkaryotype was 46XY. The thyroid function test9 V4 C$ v# c1 }$ i8 ?! h
showed a free T4 of 1.69 ng/dL, and thyroid stimu-2 f2 F& L# e* }8 S
lating hormone level was 1.3 µIU/mL (both normal).4 r8 z, S& B6 g i; f* m+ n4 E
The concentrations of serum electrolytes, blood
& v6 t" Y9 J" L; p6 P( Wurea nitrogen, creatinine, and calcium all were
# b* o- F5 d" D6 |1 D* @within normal range for his age. The concentration' `9 m/ l$ i1 r7 s( [" r0 b' H3 n: ]
of serum 17-hydroxyprogesterone was 16 ng/dL
1 E Z+ l9 S# s8 t2 O(normal, 3 to 90 ng/dL), androstenedione was 20& D0 n2 x o9 @( ^
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
" G7 ] [" s" K' f, O0 X9 E7 L, ]terone was 38 ng/dL (normal, 50 to 760 ng/dL),
, Y, z8 B3 k, T- Ndesoxycorticosterone was 4.3 ng/dL (normal, 7 to
1 ~/ G8 M1 @ U/ o; g49ng/dL), 11-desoxycortisol (specific compound S)
7 f# }$ R, p2 g$ V ?was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-6 j( m. L; U" M6 |* G% d g2 I5 I- O
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total% ]( {4 F! X+ g
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),' U: B5 S7 {( Y8 N9 y
and β-human chorionic gonadotropin was less than# {7 J# F8 S. `9 }' P
5 mIU/mL (normal <5 mIU/mL). Serum follicular
7 d3 _3 x4 p5 i, I+ G9 _6 u- qstimulating hormone and leuteinizing hormone
5 t# C) M7 t( i0 S( {$ ]8 @1 C# t% Bconcentrations were less than 0.05 mIU/mL
6 n5 i' z! w1 R8 m' P" W1 b(prepubertal).
' A9 I% V* r& J& O" c% [& I1 {The parents were notified about the laboratory
. P8 ]' ~; Y- _% s/ f0 z3 Rresults and were informed that all of the tests were6 B6 T9 h$ R# h7 r/ Y6 x) c
normal except the testosterone level was high. The
( @$ y& F. c* p/ G2 b; Ofollow-up visit was arranged within a few weeks to3 L5 c+ T' T2 u+ j
obtain testicular and abdominal sonograms; how-
9 i* ?5 O1 ~ fever, the family did not return for 4 months.
* b% [2 h4 s% t: t+ d* x7 g2 MPhysical examination at this time revealed that the. q5 z7 Y# o- A X4 C
child had grown 2.5 cm in 4 months and had gained: r: O5 h7 U( J+ V
2 kg of weight. Physical examination remained1 c, R4 ?# S9 g
unchanged. Surprisingly, the pubic hair almost com-9 m. j* e# a" l/ t2 R! f I6 s
pletely disappeared except for a few vellous hairs at
j; `' `' M8 ]) k9 Fthe base of the phallus. Testicular volume was still 2) W5 g! Q7 q0 X; ?& r
mL, and the size of the penis remained unchanged.
) w9 ?2 W- B8 D gThe mother also said that the boy was no longer hav-# x. n$ [2 c- H" }( S
ing frequent erections.9 W8 l: V1 ]+ J0 }1 `9 G5 Y- Z8 ]
Both parents were again questioned about use of( w) Y: r# \' i1 ~
any ointment/creams that they may have applied to
$ P( ^8 H- z( C9 O, a* V* _% X' Dthe child’s skin. This time the father admitted the
' G" ]4 s7 g! I3 _$ H) F TTopical Testosterone Exposure / Bhowmick et al 541 K+ J3 Y; @' p( U; J
use of testosterone gel twice daily that he was apply-
* w! P- V4 F' `: c0 A4 sing over his own shoulders, chest, and back area for* n; x" V9 V4 d6 I* h8 {
a year. The father also revealed he was embarrassed& w2 l" ] }2 O+ x1 A
to disclose that he was using a testosterone gel pre-
: q, D2 I# o. ^1 qscribed by his family physician for decreased libido
3 m1 P" Z2 J$ dsecondary to depression.
/ [4 Z) J) j7 w, Q, Q7 |The child slept in the same bed with parents.
9 }' Y( x$ I j* RThe father would hug the baby and hold him on his$ I; H$ e2 L) m z4 E/ j6 {, s
chest for a considerable period of time, causing sig-# o5 u" R8 y7 I' I' t; ?
nificant bare skin contact between baby and father.
p s+ g" N% h5 a }8 y7 ?9 u6 kThe father also admitted that after the phone call,
+ F: R3 F1 v% N" V' w6 F% [* ~$ Zwhen he learned the testosterone level in the baby
2 c, {& u4 x0 @0 s( Ewas high, he then read the product information
6 B, H2 F, j9 m& j; `- ^packet and concluded that it was most likely the rea-
9 ^2 w6 p& P0 m4 }son for the child’s virilization. At that time, they- V; B" ^+ L( D; b! w: |
decided to put the baby in a separate bed, and the
) I5 P8 H3 s0 H- I0 D4 ifather was not hugging him with bare skin and had: l9 O# ~) c9 {1 @+ [; a) ?
been using protective clothing. A repeat testosterone
% N" ]5 N# E1 c) s; P: U" ]5 ltest was ordered, but the family did not go to the' D2 p" g5 V4 t' T# d/ A6 F7 n7 t
laboratory to obtain the test.
+ t, p2 V! N5 o8 J( @: H: h7 nDiscussion
0 o% d" p$ L# U: pPrecocious puberty in boys is defined as secondary
9 B9 Q, E/ C1 o' m. S* s4 i" `0 Y( S$ ksexual development before 9 years of age.1,4
) n# H. |; d+ N" xPrecocious puberty is termed as central (true) when) B- L$ N% P3 |8 p/ V( p9 U& L# _
it is caused by the premature activation of hypo-
- A0 k4 @8 e! J# L1 R" jthalamic pituitary gonadal axis. CPP is more com-% _1 @; n7 `' q& d g6 ?: ]
mon in girls than in boys.1,3 Most boys with CPP
/ H, O7 k. p" f/ s, fmay have a central nervous system lesion that is( K9 l7 E/ |1 Q9 t3 L+ |
responsible for the early activation of the hypothal-
8 ^9 p$ W: Q- k+ namic pituitary gonadal axis.1-3 Thus, greater empha-
/ V3 s, k$ J T1 Qsis has been given to neuroradiologic imaging in ^# h- r- e( k+ w+ n8 u2 R! H
boys with precocious puberty. In addition to viril-
% L' F* e+ F+ L, U' k) Y3 oization, the clinical hallmark of CPP is the symmet-
; r( w+ `. R" H4 |& S3 \& M: Orical testicular growth secondary to stimulation by% K. R* o& v! ^. @
gonadotropins.1,38 f) ~; A/ E7 o% Q4 C
Gonadotropin-independent peripheral preco-3 ]# J6 v2 b0 m4 D3 P$ N; Y8 R
cious puberty in boys also results from inappropriate
) f1 Q" {6 a% l9 v v4 G5 oandrogenic stimulation from either endogenous or, `) {1 b# F Q9 ^ ]7 Y
exogenous sources, nonpituitary gonadotropin stim-
" O+ I# p5 R" b2 Q, H& y/ p g% Pulation, and rare activating mutations.3 Virilizing7 z. a6 [: H/ |' B4 h) f5 T
congenital adrenal hyperplasia producing excessive' K) \$ s! Q5 p2 L/ T% D+ a+ ]
adrenal androgens is a common cause of precocious8 w- o5 y% g8 G o( t. [3 K! R: m
puberty in boys.3,4
$ p3 U: H' L7 o2 H5 a4 dThe most common form of congenital adrenal
, t5 x1 O u- u8 whyperplasia is the 21-hydroxylase enzyme deficiency.
3 i, G# ^$ B0 Z- Z' B) Y0 r: mThe 11-β hydroxylase deficiency may also result in( `7 m6 N! m1 A8 |1 T) [
excessive adrenal androgen production, and rarely,8 E! t" p! F8 J8 s9 S9 M
an adrenal tumor may also cause adrenal androgen
3 W, B9 h0 W, b" f% Zexcess.1,3/ F- h8 n( I6 e5 b/ c
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
$ ?, O1 L% z" D+ ^/ P) E: v" I& d542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
; n1 r/ t0 `8 @" {4 g, b( FA unique entity of male-limited gonadotropin-+ w1 Z0 P& ?/ b7 q7 [- r
independent precocious puberty, which is also known$ W; |* O9 N0 a0 ~5 [
as testotoxicosis, may cause precocious puberty at a; |, R# o1 i% k7 g: D: B) _
very young age. The physical findings in these boys% l+ V: H0 L, R; E( h6 S
with this disorder are full pubertal development,6 |) P( ^5 F( z6 I( r0 @
including bilateral testicular growth, similar to boys; N! h- i/ w% \% d0 o+ x; J5 y9 B
with CPP. The gonadotropin levels in this disorder
) Q2 \ d* K8 Xare suppressed to prepubertal levels and do not show
0 [" @& b2 S; O3 N/ f! B4 Cpubertal response of gonadotropin after gonadotropin-
4 a s4 Z& g4 w* s* l( V* Preleasing hormone stimulation. This is a sex-linked
* ?: x }1 s z6 h+ U( ?" Sautosomal dominant disorder that affects only
9 k- Y' d3 F% w* Y( c" r- Imales; therefore, other male members of the family' H) ]$ J3 E; S) `. }% C* C
may have similar precocious puberty.3
8 A; W" \$ U& k% _1 k1 Z# A5 QIn our patient, physical examination was incon-
4 f4 z. [# |& p1 ?sistent with true precocious puberty since his testi-
( g& Z8 X o/ z! n# W. g' b! Ucles were prepubertal in size. However, testotoxicosis+ ~( L, O! [: \+ j
was in the differential diagnosis because his father# L) U: k z1 r5 O w
started puberty somewhat early, and occasionally,' g5 F- Y/ C6 Z
testicular enlargement is not that evident in the, @- V4 d5 B2 b) L" e' u5 r
beginning of this process.1 In the absence of a neg-
# r* s. ~# `9 `# V! I5 @$ gative initial history of androgen exposure, our3 {* b# C5 x" {4 [
biggest concern was virilizing adrenal hyperplasia,
1 q' P4 u9 I$ |. n4 Geither 21-hydroxylase deficiency or 11-β hydroxylase
: J( \7 n, v6 R q, v3 w0 J8 {deficiency. Those diagnoses were excluded by find-$ j5 u5 L; i4 @
ing the normal level of adrenal steroids.% R/ d6 X) y4 m8 d" `" z
The diagnosis of exogenous androgens was strongly; I1 t4 \- T: a0 Y# D
suspected in a follow-up visit after 4 months because
- j% G# o" i0 r9 A& `8 T: h# xthe physical examination revealed the complete disap-
) Q3 y6 \; @. Z2 K: Mpearance of pubic hair, normal growth velocity, and( a7 r2 y( Y5 _. y0 x& P
decreased erections. The father admitted using a testos-
' Y, n# G0 K5 P' w. l+ L l8 zterone gel, which he concealed at first visit. He was0 o& l4 Y9 K* g# ^4 v; k
using it rather frequently, twice a day. The Physicians’
8 G5 Z5 n! v& f& K! _2 S) p' B0 B. ^Desk Reference, or package insert of this product, gel or
; v( z" \& [8 m/ mcream, cautions about dermal testosterone transfer to* ?! i1 k+ H8 y' a2 O' s
unprotected females through direct skin exposure.# h! B6 y( W) s( G' ~
Serum testosterone level was found to be 2 times the% ? D9 C. ?4 g) R [
baseline value in those females who were exposed to& w( G8 c9 W3 M$ T
even 15 minutes of direct skin contact with their male* Y8 ?! H) U) e& {% _: x
partners.6 However, when a shirt covered the applica-
0 _* D& h- }' ktion site, this testosterone transfer was prevented., A' Z1 B5 V; A! R4 `
Our patient’s testosterone level was 60 ng/mL," e+ r. E; v6 ]# z
which was clearly high. Some studies suggest that$ y% G/ y9 W7 w% \% ]
dermal conversion of testosterone to dihydrotestos-- A( a1 i: }$ Y% R- ]5 u. b
terone, which is a more potent metabolite, is more J0 o/ C! L! ^% J' g
active in young children exposed to testosterone. W8 ^1 `9 p! g5 ^1 f
exogenously7; however, we did not measure a dihy-
9 P3 z( K! U' q' n4 y) L! bdrotestosterone level in our patient. In addition to5 W5 d1 a7 J, G" X
virilization, exposure to exogenous testosterone in
* C E) n4 l2 X3 |children results in an increase in growth velocity and
# u, a: x/ ~. N6 T& ]: \: ~ Yadvanced bone age, as seen in our patient.
g% N& G: D* T1 _* wThe long-term effect of androgen exposure during" }7 s0 z3 U/ f8 G- \! e+ V
early childhood on pubertal development and final
4 F$ Z' D: a7 o2 Cadult height are not fully known and always remain3 i4 I* v! F! e( U2 D$ x
a concern. Children treated with short-term testos-
6 j( ?$ q2 q2 tterone injection or topical androgen may exhibit some* F9 q1 `/ Z& p; X% K2 F/ F
acceleration of the skeletal maturation; however, after" T6 B* U# i4 b
cessation of treatment, the rate of bone maturation
& [2 q/ u+ E9 q& N* }decelerates and gradually returns to normal.8,9; ^. x0 ], L6 w
There are conflicting reports and controversy. `& X! o4 L3 o/ l5 m1 u( }
over the effect of early androgen exposure on adult% R! D- `2 y7 L7 U2 S6 n
penile length.10,11 Some reports suggest subnormal
: d2 }3 x& ~# T/ P) R, U& X' eadult penile length, apparently because of downreg-
! B7 v' V* o% Wulation of androgen receptor number.10,12 However,/ N6 q# t+ F# v# Y& R9 Z- x
Sutherland et al13 did not find a correlation between% k% Z2 [! {: d
childhood testosterone exposure and reduced adult
, c" q* d% S' U8 o# openile length in clinical studies." H* T9 Y+ H2 Y2 n6 p$ b D2 [* x
Nonetheless, we do not believe our patient is( F' F1 L. A. ~
going to experience any of the untoward effects from
; u ]1 Q& k# n5 V. N& `testosterone exposure as mentioned earlier because/ n& A# v4 @: ]: E
the exposure was not for a prolonged period of time.) y/ e/ q1 W5 L( h$ L
Although the bone age was advanced at the time of7 H/ F' ^1 P1 E3 ~
diagnosis, the child had a normal growth velocity at
/ f) f7 C/ ?1 C/ ethe follow-up visit. It is hoped that his final adult
6 q- u0 c- G- U, x8 {! X% pheight will not be affected.
" y) ?& Y! x5 f4 O3 m6 }$ @Although rarely reported, the widespread avail-: J+ |' f0 _: I
ability of androgen products in our society may
7 [$ X/ M9 o% v) j8 `( | |! Bindeed cause more virilization in male or female- g4 D) [3 H- L) r& h
children than one would realize. Exposure to andro- H5 M- R3 R, U1 ?. j
gen products must be considered and specific ques-
; m1 T) ^: Q9 Q1 }; I/ t2 ]3 Ztioning about the use of a testosterone product or
8 q& t' C ^) d/ Ngel should be asked of the family members during3 e; |, Z: V8 T' h5 E( q
the evaluation of any children who present with vir-
9 |; u7 I1 ]+ {' e7 T" pilization or peripheral precocious puberty. The diag-
9 ~% ?' s. P+ {& w$ N3 F4 Ynosis can be established by just a few tests and by: c0 J1 `% u6 e" Z+ u% j
appropriate history. The inability to obtain such a8 V- K5 _0 x. y2 X$ m
history, or failure to ask the specific questions, may
d1 u* W! Y* q- Rresult in extensive, unnecessary, and expensive
, I9 `( h( C# Iinvestigation. The primary care physician should be6 [% C" \% H6 h" O9 ]
aware of this fact, because most of these children' ]3 L1 z' Y% n. y5 P2 g* K: G8 i
may initially present in their practice. The Physicians’
M- _3 b0 [ P8 d- \& S; mDesk Reference and package insert should also put a
) d, u1 q3 C: g8 B8 m# }warning about the virilizing effect on a male or
# q( Q+ f! K8 {& t6 F: q/ hfemale child who might come in contact with some-
3 R* W: W& ?- U. X6 S) \) tone using any of these products.
# ]9 o8 d2 r* i8 ]6 ?References
5 C2 b% Y( W1 N; h1. Styne DM. The testes: disorder of sexual differentiation/ t) v- j$ U |3 W% C
and puberty in the male. In: Sperling MA, ed. Pediatric
/ S+ t' ]6 Q. H. g: XEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;( m% \. {7 x' h4 f' d: ~$ M
2002: 565-628.
( z" Y7 ~/ U; z9 W) Z2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
! ]7 T+ Z4 W- [' g7 P: tpuberty in children with tumours of the suprasellar pineal
1 p8 i% D. F7 hat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
: h% n5 U3 g+ e9 c' N/ `( C ZTopical Testosterone Exposure / Bhowmick et al 543. Z3 }3 G/ _) W( Q2 ?' A$ v7 @! \
areas: organic central precocious puberty. Acta Paediatr.
) y* N: U! w8 Z2001;90:751-756.
3 e+ ?: @. y5 c, K3 V' ]3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.% p0 S' S1 r# y! _
Pediatric Endocrinology. 4th ed. New York, NY: Marcel
7 B+ q( }. J/ _, ]Dekker Inc; 2003:211-238.
, G$ [0 [6 `( ^6 y( s$ W4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
2 E& Y9 a0 c# r% g3 g: L0 H& i! T7 Wdevelopment in a two-year-old boy induced by topical
, U I& z2 t- p" Yexposure to testosterone. Pediatrics. 1999;104:e23.
) T: ` j$ v" C0 ]8 `, F5. Greulich WW, Pyle SI, eds. Radiographic Atlas of4 T+ |+ k) b# h: |+ r! V7 O
Skeletal Development of the Hand and Wrist. 2nd ed.9 }- v, r5 g' V# @: |
Stanford, CA: Stanford University Press; 1959.
2 ]7 m+ s$ ~8 K ~6. Physicians’ Desk Reference. Androgel 1% testosterone,, S& s H; D% X- e% a, S
Unimed Pharmaceutical Inc. Montvale, NJ: Medical
; Z5 X* G0 C2 q. C# D# }% xEconomics Company, Inc; 2004:3239-3241.
) I4 I$ S4 g% t7. Klugo RC, Cerny JC. Response of micropenis to topical
9 ^$ c6 L: k+ t1 r$ O, Utestosterone and gonadotropin. J Urol. 1978;119:
3 H% R {$ V5 A9 h; g667-668.. ]5 s; Q" a) ~ ^( J
8. Guthrie RD, Smith DW, Graham CB. Testosterone$ p8 e! u6 n& `; P2 J1 _! Q
treatment for micropenis during early childhood. J Pediatr." W3 _5 o9 M: ?) C' `& T) c
1973;83:247-252./ q( d1 v, Y! H- n# }/ ]4 I
9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone
8 j0 p2 y3 }$ r& ]0 utherapy for penile growth. Urol. 1975;6:708-710.7 e9 g7 j2 L1 Q" S- H; m) X
10. Husmann DA, Cain MP. Microphallus: eventual phallic
* }' V# K' t4 Wsize is dependent on the timing of androgen administra-7 f6 Z9 \4 q5 P2 r5 r8 l
tion. J Urol. 1994;152:734-739.% E/ C- K2 c1 J- c% G8 o+ T: w
11. McMahon DR, Kramer SA, Husmann DA. Micropenis:- M& O* x% x& L K" E
does early treatment with testosterone do more harm+ J1 k8 f2 j" }4 d# p
than good? J Urol. 1995;154:825-829.
# i" _9 E8 S* L" V5 P12. Takane KK, George FW, Wilson JD. Androgen receptor4 t! S* j. B8 e) N C
of rat penis is down-regulated by androgen. Am J Physiol.0 n' G4 @( e4 U- h' B
1990;258:E46-E50.1 r& k2 F, ?5 k0 S( F5 |
13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect) L, C6 H: Q5 Q2 ^5 S1 i" T& _* A
of prepubertal androgen exposure on adult penile
( z c1 l6 N, y' h( a; ?length. J Urol. 1996;156:783-787. |
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