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is a significant concern for physicians. Central$ J" S5 Y, ^9 Y( e
precocious puberty (CPP), which is mediated4 g, D+ {% v# _4 n" b8 ]5 d# b6 A
through the hypothalamic pituitary gonadal axis, has& {& j: W9 f+ @) j( V
a higher incidence of organic central nervous system* ]2 I/ ~* C: A \
lesions in boys.1,2 Virilization in boys, as manifested
: F9 ?( h2 B1 v1 `1 L: Eby enlargement of the penis, development of pubic
; S9 L2 ^ y. O! n& r. m+ thair, and facial acne without enlargement of testi-
1 k# V, [! g3 |2 scles, suggests peripheral or pseudopuberty.1-3 We
" b/ V* \$ V# @+ |report a 16-month-old boy who presented with the8 b! ~$ [: p8 A+ Z
enlargement of the phallus and pubic hair develop-: k( w$ ^7 d) }; k
ment without testicular enlargement, which was due
0 a' T" a: a' Z8 d& v, v9 S1 W! ~to the unintentional exposure to androgen gel used by
8 n7 T1 w5 X# f; [9 Mthe father. The family initially concealed this infor-# ~: c" G: X+ @% t, z I( k
mation, resulting in an extensive work-up for this
5 ]( I$ R1 {! V0 wchild. Given the widespread and easy availability of1 s% V, s8 `. u
testosterone gel and cream, we believe this is proba-6 V, k6 o3 M7 I( {5 S1 V
bly more common than the rare case report in the
0 g# Y5 }- t C( lliterature.41 M3 S4 Y9 l( @+ R3 _2 Y! y
Patient Report
* S" `5 i! a+ l6 N) L: AA 16-month-old white child was referred to the4 s8 A, {- T. t' |1 Y& e
endocrine clinic by his pediatrician with the concern
* C6 o5 M- T6 T" Rof early sexual development. His mother noticed1 J' t7 ~- n0 X& R* s* h- ~# n
light colored pubic hair development when he was
1 s8 A" o) w2 K# K! d' ^From the 1Division of Pediatric Endocrinology, 2University of
2 @% ]$ p, X1 x: b% b' d; LSouth Alabama Medical Center, Mobile, Alabama.
* m7 c. S7 l% M3 N8 PAddress correspondence to: Samar K. Bhowmick, MD, FACE,
( D8 U1 q3 w; L A2 ~* R, AProfessor of Pediatrics, University of South Alabama, College of
( b# @/ I9 H. y; SMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
B$ D# v' y# R% n7 A6 G. R/ se-mail: [email protected]., x5 H6 [' \8 c4 p6 R
about 6 to 7 months old, which progressively became
3 S1 \$ F/ {4 H% w/ Ydarker. She was also concerned about the enlarge-- J" ]' b% @; d- W! u" i
ment of his penis and frequent erections. The child
- E& b, [8 h/ ~+ g8 T. _3 hwas the product of a full-term normal delivery, with' Z# i9 s# l! s
a birth weight of 7 lb 14 oz, and birth length of' F' g4 a$ z) v' y- b
20 inches. He was breast-fed throughout the first year
+ y+ ?# F- y4 {6 L5 rof life and was still receiving breast milk along with
, r# C! }( ~, `- S% psolid food. He had no hospitalizations or surgery,% z9 j, k' E F/ n# C4 V2 u7 Z x
and his psychosocial and psychomotor development
& g2 [/ U Q' H9 t- b# O& N0 i1 hwas age appropriate.. B6 C( G* r" [% z
The family history was remarkable for the father,! c* s1 V/ H- V7 d4 ^0 a
who was diagnosed with hypothyroidism at age 16,
' k, p3 x: X; \) Y5 ^9 Bwhich was treated with thyroxine. The father’s
L& b' a6 _8 @/ D8 W; L+ vheight was 6 feet, and he went through a somewhat, u) D- y7 e. \, }+ s& i
early puberty and had stopped growing by age 14.
' Z0 t) r" o9 JThe father denied taking any other medication. The
! H2 T [& q/ ~2 o& t1 f% L9 g4 v6 V' Uchild’s mother was in good health. Her menarche
! B: \2 @( t' d" T0 `3 Cwas at 11 years of age, and her height was at 5 feet
- G7 h+ g: K4 u! O5 inches. There was no other family history of pre-
) j7 u2 p. \) dcocious sexual development in the first-degree rela-/ |. S$ S1 [ R9 ]. ]. q
tives. There were no siblings.
& b9 V5 k! o# D/ S+ h+ D9 H0 V. F$ lPhysical Examination( \' ~6 c) y' X1 }2 S- r
The physical examination revealed a very active,* R8 F: e" N9 `; \& t
playful, and healthy boy. The vital signs documented
3 t/ W' N* P" |6 ] Y$ z, Ca blood pressure of 85/50 mm Hg, his length was8 h5 g7 a' {. {' x
90 cm (>97th percentile), and his weight was 14.4 kg
. d/ D3 _* t! U1 N) M(also >97th percentile). The observed yearly growth8 U+ m2 z8 m+ x4 A- S
velocity was 30 cm (12 inches). The examination of. g% _$ v" J y" t' Y3 z
the neck revealed no thyroid enlargement.
) N; a. l; O$ S. G$ ZThe genitourinary examination was remarkable for
- |# S* S8 V$ w; m5 J Menlargement of the penis, with a stretched length of/ ~% f' `2 _) @) D3 C5 Z
8 cm and a width of 2 cm. The glans penis was very well
0 s: B1 L8 Y5 C, x. [* H1 Y3 xdeveloped. The pubic hair was Tanner II, mostly around* u' l# i; k6 G9 V
540! X, v: @- |- t+ K6 {
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
1 H- S) w z5 D9 wthe base of the phallus and was dark and curled. The' G0 g' m6 ^! }# O& g# g" {
testicular volume was prepubertal at 2 mL each.1 ^, S! V, L m; a
The skin was moist and smooth and somewhat
* a7 |, l1 r) m( zoily. No axillary hair was noted. There were no
2 S: u3 G4 {9 L }abnormal skin pigmentations or café-au-lait spots.+ A2 G8 ^. V4 _9 M
Neurologic evaluation showed deep tendon reflex 2+8 T- X; N$ ^& e3 H$ d* ^
bilateral and symmetrical. There was no suggestion
# E% D7 y1 @, K" v4 Hof papilledema.3 x& |+ f/ n% Y/ ]5 ?- p" N3 u
Laboratory Evaluation- T; u I' y h* A0 k
The bone age was consistent with 28 months by0 r9 Z5 d8 ]) o) V( H8 z2 Z+ M
using the standard of Greulich and Pyle at a chrono-% ]# `2 y! X0 V& Q0 J0 u
logic age of 16 months (advanced).5 Chromosomal- r! q* C1 o. m1 f: |! U% d# s
karyotype was 46XY. The thyroid function test% v& i: E( Z9 n! `: ^! B0 _' ?* ~
showed a free T4 of 1.69 ng/dL, and thyroid stimu-, b% _5 i% v H5 @ |$ j a
lating hormone level was 1.3 µIU/mL (both normal).3 W, o2 X, p& F" E$ d1 B; q- W
The concentrations of serum electrolytes, blood& V6 Y+ _( x: s- M; K
urea nitrogen, creatinine, and calcium all were8 V1 F* t; f1 L2 ^' y5 i% j3 M) t
within normal range for his age. The concentration
4 y' J* v9 C" mof serum 17-hydroxyprogesterone was 16 ng/dL
: ~4 e: W9 y" {& l(normal, 3 to 90 ng/dL), androstenedione was 20
$ s, p2 Q0 Y* T& m; s" {; W. nng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-* s: q2 r" P; K$ J, Z
terone was 38 ng/dL (normal, 50 to 760 ng/dL),1 T4 R% ?- j0 D, C3 g8 D) x3 m
desoxycorticosterone was 4.3 ng/dL (normal, 7 to5 ^$ B: k R& F9 F
49ng/dL), 11-desoxycortisol (specific compound S)+ o/ _6 y# A' f2 E5 v# A, w4 g) n
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor- P. Y7 X" b8 `8 W. Y
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total. K- I; C0 j, P: ^. R
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
, b7 z+ ^- u z2 H* qand β-human chorionic gonadotropin was less than
, x& K5 N' E" O% `5 mIU/mL (normal <5 mIU/mL). Serum follicular. x5 u( O$ e2 q+ j3 w8 \
stimulating hormone and leuteinizing hormone
5 v( @$ r0 `$ _- P4 W% E5 ]concentrations were less than 0.05 mIU/mL$ K" g7 F. \, \4 |5 r8 \, l; z9 T
(prepubertal).- H( ?- R, B" K2 q3 U
The parents were notified about the laboratory
( n" X, V9 x1 i: l' Hresults and were informed that all of the tests were1 \6 X' B, p# E; l% r& N6 W" r
normal except the testosterone level was high. The6 Z8 v8 S# }, P4 V+ v/ v1 a
follow-up visit was arranged within a few weeks to2 X4 X' W/ Z$ ~: [
obtain testicular and abdominal sonograms; how-/ {$ X$ }7 {1 |" K
ever, the family did not return for 4 months.
5 ?- O9 J! I |8 dPhysical examination at this time revealed that the
7 O5 _ l( b, D: zchild had grown 2.5 cm in 4 months and had gained
P, x7 A3 w5 O2 kg of weight. Physical examination remained' z: ^) g. _* D, S3 D# p
unchanged. Surprisingly, the pubic hair almost com-0 t) A$ h4 [% L H7 x2 K
pletely disappeared except for a few vellous hairs at, x0 w; N/ S$ J. Q0 I k
the base of the phallus. Testicular volume was still 2
' e7 j" z) N- c6 PmL, and the size of the penis remained unchanged.
# W* K9 `/ v0 D: L% |The mother also said that the boy was no longer hav-
. p( @& e" p: [: w8 u! S% U6 Uing frequent erections.( Y8 n' z5 B& p: g6 U2 E
Both parents were again questioned about use of
6 `( |# D; z" P; S! L0 p) pany ointment/creams that they may have applied to
0 Y% h' A. B# K8 v$ H) Ithe child’s skin. This time the father admitted the
F7 ^3 x6 B( u/ G: z, o" cTopical Testosterone Exposure / Bhowmick et al 5419 h9 r* }1 P8 l d, H1 u
use of testosterone gel twice daily that he was apply-
* a3 n, k* F# g2 B6 ]- |ing over his own shoulders, chest, and back area for
9 W1 D K" j. G- g4 R+ ia year. The father also revealed he was embarrassed
/ L: {/ H0 ^- S- e9 O* L# Zto disclose that he was using a testosterone gel pre-
% i# c; t" G/ ]& c! o2 nscribed by his family physician for decreased libido
8 Q' R2 ~ W/ Xsecondary to depression.
( h% j$ g1 L$ B3 yThe child slept in the same bed with parents.
! ?) y+ O& M7 r4 \8 f. xThe father would hug the baby and hold him on his& |7 l c/ ^' M& |! d# l
chest for a considerable period of time, causing sig-
& w- x* u& {, ]$ A5 ynificant bare skin contact between baby and father.
: j& f9 w/ A# `, n C2 mThe father also admitted that after the phone call,
4 A. C- h' N+ c' T$ @6 z2 d( \2 cwhen he learned the testosterone level in the baby
$ ]4 c% b$ j) ]4 K- n$ d' q' \ q: vwas high, he then read the product information5 j# U% X. |* C/ X2 }+ e: u( m: @- F
packet and concluded that it was most likely the rea-
& f; }) c. \6 _' wson for the child’s virilization. At that time, they3 N: ]" @3 I! l* J8 K$ W
decided to put the baby in a separate bed, and the0 Y) ^4 x9 D- g% t5 P
father was not hugging him with bare skin and had
$ B; ~- A! ^7 R& J, C- _$ P+ {: `& Tbeen using protective clothing. A repeat testosterone' J* Y/ O) z: V/ l! u$ e
test was ordered, but the family did not go to the
( H8 {9 G- I+ \laboratory to obtain the test.3 I/ i* t* ^& s1 }
Discussion& ?4 X) d5 a% P1 g! b
Precocious puberty in boys is defined as secondary
# b! ^5 C% R% ]) E' ]sexual development before 9 years of age.1,4
' ~8 `$ G8 U0 uPrecocious puberty is termed as central (true) when
5 m% g5 E) g$ s7 T! W9 G. F2 Zit is caused by the premature activation of hypo-1 X2 c7 N# K* N6 {, b$ d9 c
thalamic pituitary gonadal axis. CPP is more com-
! t. F C. P1 f, u d( i Omon in girls than in boys.1,3 Most boys with CPP
+ r) C6 X$ I- c% i2 Omay have a central nervous system lesion that is
% b, a% r, v& P1 E4 c# m/ Mresponsible for the early activation of the hypothal-9 J7 C z7 q( I% v! z
amic pituitary gonadal axis.1-3 Thus, greater empha- S: E$ u! X1 Z( E
sis has been given to neuroradiologic imaging in/ H4 l& M$ L# W& i* y, c7 W
boys with precocious puberty. In addition to viril-
& R4 ^ M& X$ ^6 F8 ]ization, the clinical hallmark of CPP is the symmet-
% }4 D# B( H8 [9 k' H$ T- Jrical testicular growth secondary to stimulation by
9 N; n" b7 U0 o$ Z5 vgonadotropins.1,30 K1 h, Q8 G- _8 K
Gonadotropin-independent peripheral preco-6 m! [6 L7 {9 T9 J' f
cious puberty in boys also results from inappropriate3 @0 C- T+ B0 ^3 j+ y7 M
androgenic stimulation from either endogenous or
; V7 ? l1 ?+ P$ t4 p- kexogenous sources, nonpituitary gonadotropin stim-
" X |; Q6 B. a4 }ulation, and rare activating mutations.3 Virilizing
* A. d" F1 X1 n7 {congenital adrenal hyperplasia producing excessive
: a6 s% H8 j; j0 j: c( R6 Zadrenal androgens is a common cause of precocious
: o+ L1 f0 h0 ^8 vpuberty in boys.3,4
1 O5 h* W1 c, y z6 l2 q% X. yThe most common form of congenital adrenal, s% D8 g0 @% G2 E
hyperplasia is the 21-hydroxylase enzyme deficiency.6 D O2 h6 F; v% g/ f# `9 \
The 11-β hydroxylase deficiency may also result in, C& x5 p) E- \; ^( C7 \2 `
excessive adrenal androgen production, and rarely,$ U- _; {: b' N5 ~
an adrenal tumor may also cause adrenal androgen2 u6 m0 |6 J4 M" y0 Q( s( I4 B
excess.1,3' ^3 V, U+ F: u: z$ z% d
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from7 Z/ B; S* c8 K n- Z6 `% t
542 Clinical Pediatrics / Vol. 46, No. 6, July 20078 ~1 O9 y/ [, L+ X% _
A unique entity of male-limited gonadotropin-
0 C$ k% L3 Z$ X* M5 k& Xindependent precocious puberty, which is also known& O4 K$ T2 L) {: d1 |, c
as testotoxicosis, may cause precocious puberty at a
0 f7 U8 R K/ o" \+ {5 p7 N0 Bvery young age. The physical findings in these boys
/ u5 b; q5 Z) j9 _% wwith this disorder are full pubertal development,
6 m5 c; g% b; D/ o! N+ J2 hincluding bilateral testicular growth, similar to boys. h! q% t7 l- E. Y% P" O2 a
with CPP. The gonadotropin levels in this disorder4 R1 o; F: R, D M: G$ k6 t4 P C
are suppressed to prepubertal levels and do not show) s) }7 ?7 h; {/ A- R& h3 z' J
pubertal response of gonadotropin after gonadotropin-; A. G H% s8 V* w L
releasing hormone stimulation. This is a sex-linked6 z8 R$ v0 {: }- v( B- E
autosomal dominant disorder that affects only* |+ J9 q# E1 y6 E& Q+ I2 n
males; therefore, other male members of the family, n% H. G4 u, b( I9 W; X! \, C
may have similar precocious puberty.3 v4 ~$ n) L6 M9 a! L+ m3 [- x
In our patient, physical examination was incon-
: Y8 Q2 s! E! \9 f1 ]/ e8 Qsistent with true precocious puberty since his testi-
5 J& n) a1 q. a1 vcles were prepubertal in size. However, testotoxicosis: L% }% P; m* p! T6 s
was in the differential diagnosis because his father$ \1 K0 P: W5 A
started puberty somewhat early, and occasionally,
7 f$ }' Z8 Q L8 b, `8 wtesticular enlargement is not that evident in the- {3 Q- [$ F0 @/ G6 P6 `* G; _- ]
beginning of this process.1 In the absence of a neg-! G' ^1 \' |, N1 Y
ative initial history of androgen exposure, our
9 x( a! d7 ]. l* b7 }7 r: \- ?, qbiggest concern was virilizing adrenal hyperplasia,
) Z! `# L3 ?5 e2 A: M9 |1 keither 21-hydroxylase deficiency or 11-β hydroxylase
$ h( {7 Q/ ?1 }; g: mdeficiency. Those diagnoses were excluded by find-( b/ n' k) H d* [6 t0 `% x
ing the normal level of adrenal steroids.
# ?5 C" I* l. i% ]0 s! ]The diagnosis of exogenous androgens was strongly" v/ ^% z* \9 A+ j5 T
suspected in a follow-up visit after 4 months because( b) p' S" I0 @
the physical examination revealed the complete disap-( f( d- _: ^- ?% d, M. ?
pearance of pubic hair, normal growth velocity, and7 r: n3 M8 ?& Q" ~
decreased erections. The father admitted using a testos-
5 D6 k1 J7 `! ?6 {7 Iterone gel, which he concealed at first visit. He was
2 `9 W8 w2 o# p. ~using it rather frequently, twice a day. The Physicians’
& K& C) p) c" c9 oDesk Reference, or package insert of this product, gel or
4 F( k% y- G% V2 Ecream, cautions about dermal testosterone transfer to" h9 _+ v1 C( Q7 u, k" |
unprotected females through direct skin exposure.
. r$ b M# N3 H0 r6 F( H6 USerum testosterone level was found to be 2 times the
3 |9 Q3 K1 C6 J% Ebaseline value in those females who were exposed to
! B. ]6 K- m1 \' C7 N0 S3 Keven 15 minutes of direct skin contact with their male
! p$ P; m: a6 m2 ^3 h6 z1 Fpartners.6 However, when a shirt covered the applica-
0 d; e' N6 A/ U( j" L$ ation site, this testosterone transfer was prevented.9 o' I1 ?) |( y7 `; c
Our patient’s testosterone level was 60 ng/mL,* T2 }, _! |- {, @. Q* d0 o
which was clearly high. Some studies suggest that, X& r/ Z7 y+ C" y4 d* y
dermal conversion of testosterone to dihydrotestos-
8 W: g! f( ~! a: G0 dterone, which is a more potent metabolite, is more
9 r/ |( u7 n3 x4 A$ z6 b5 lactive in young children exposed to testosterone
7 _% F9 [& Q7 ]( c% V% P! ^7 N" zexogenously7; however, we did not measure a dihy-
2 ?6 P6 j Z, n3 bdrotestosterone level in our patient. In addition to
$ [1 H6 x2 f# n) c3 M+ Qvirilization, exposure to exogenous testosterone in
2 X8 M" E1 }% G, V% {! D9 G1 t7 schildren results in an increase in growth velocity and
% Q( f9 R+ X7 k& }+ p8 P& Ladvanced bone age, as seen in our patient.
; o# x0 v4 n( ]! G. ~" |& r7 bThe long-term effect of androgen exposure during
3 O8 v9 |8 i% Z/ V4 Jearly childhood on pubertal development and final
9 L" A& v" u' m8 A5 }. Uadult height are not fully known and always remain
' b' D5 V' X. \% j4 V& H! S1 Ia concern. Children treated with short-term testos-
5 s2 N5 S8 R5 u" s6 M2 `2 ~; xterone injection or topical androgen may exhibit some9 }( }8 k4 ?2 T3 k
acceleration of the skeletal maturation; however, after
3 J/ T0 Q; M: |2 y3 z' t/ acessation of treatment, the rate of bone maturation
, {" O2 [( ]% j9 G- ndecelerates and gradually returns to normal.8,9
" ^1 O, i3 k; B5 F8 q; sThere are conflicting reports and controversy
, x$ g8 F$ S( W( ^0 m+ T4 Hover the effect of early androgen exposure on adult
( s; N5 n6 w: z9 _+ w' l( Fpenile length.10,11 Some reports suggest subnormal% W1 g5 ^9 p8 y
adult penile length, apparently because of downreg-
; g# Y* V+ a9 s- X2 l- V# ?& ]/ iulation of androgen receptor number.10,12 However,) E9 {, y* y. L& Q: Q! y* K
Sutherland et al13 did not find a correlation between& K, H' P6 J) z* `( b0 E! n+ L
childhood testosterone exposure and reduced adult
5 J* K7 o: E W3 n, q* Ppenile length in clinical studies.! E0 ]' `$ A% ^; @6 y3 e6 ?8 R7 B0 r' s
Nonetheless, we do not believe our patient is8 \5 U# T: o/ e- y+ y
going to experience any of the untoward effects from9 L) |: v0 a6 L1 t2 E; l, B
testosterone exposure as mentioned earlier because: a! {$ Z! r/ o8 b6 l& F& I6 Z3 E
the exposure was not for a prolonged period of time.
. o2 y% l+ N7 s1 F4 f6 UAlthough the bone age was advanced at the time of
9 n" d- H0 G% L% k# t8 W1 udiagnosis, the child had a normal growth velocity at0 V k; t5 }/ Q( q- o( Z
the follow-up visit. It is hoped that his final adult& p: J2 |4 W z* r B2 S6 j; y
height will not be affected.
8 J+ I+ Y) [. L4 G4 K( h+ uAlthough rarely reported, the widespread avail-3 T. ]6 r% D/ T, ~, r" \8 ?+ R
ability of androgen products in our society may
% ?; Q v; S+ x4 f: V$ C2 O5 kindeed cause more virilization in male or female) r4 z% J4 g6 n3 C8 G' N
children than one would realize. Exposure to andro-! q9 w3 ^: z1 c- |( A7 q" E
gen products must be considered and specific ques-
& m. f/ a3 c* Q- Q- w/ ]tioning about the use of a testosterone product or
d/ }2 ~* t8 X/ O% p v+ }* kgel should be asked of the family members during& F- w* l# r- f" T& D
the evaluation of any children who present with vir-
$ T6 ^ f; z( o- m4 \ilization or peripheral precocious puberty. The diag-
" H. d' T- I) r0 a$ O) ?" dnosis can be established by just a few tests and by; m8 i0 C6 ~5 b6 Y
appropriate history. The inability to obtain such a
v' k" y8 S( Dhistory, or failure to ask the specific questions, may
4 S4 @+ i% @3 G: x7 Wresult in extensive, unnecessary, and expensive
8 M6 x" g7 l% `; @2 }' ninvestigation. The primary care physician should be l# m! A6 m% a: ` D9 v4 _. \
aware of this fact, because most of these children# L2 e5 A! ?+ A( o) @
may initially present in their practice. The Physicians’* Y; o% h: m, x) A2 t; w4 V
Desk Reference and package insert should also put a
, z) X8 L: I) Z7 E, _warning about the virilizing effect on a male or
0 {" t- Q& g8 b9 J" g1 s8 lfemale child who might come in contact with some-7 ^5 n2 {3 }1 q7 u( A. H/ w
one using any of these products.8 K3 n _- k: W
References/ j1 R% y% u$ v9 e
1. Styne DM. The testes: disorder of sexual differentiation
, w- U, s( j Uand puberty in the male. In: Sperling MA, ed. Pediatric8 C8 L( [8 z! l1 s1 X
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
; s( B5 i, ^" Q8 ~8 x3 z2002: 565-628. B1 P7 |5 u8 K7 Y N; S
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious0 y! s* `) T; g5 W, @: R
puberty in children with tumours of the suprasellar pineal
8 s9 A( w7 J4 J, Oat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from2 p0 j! W4 B3 W. v. U
Topical Testosterone Exposure / Bhowmick et al 543$ q6 C& _% g# Y% P
areas: organic central precocious puberty. Acta Paediatr.3 l; v) Q1 [7 v1 q9 G6 l3 K2 l
2001;90:751-756.
7 X0 g1 F8 |8 K8 E3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
0 C# x: B) S, w/ Q5 w8 s# p ]Pediatric Endocrinology. 4th ed. New York, NY: Marcel* r, M$ f& `3 b5 z3 x- z2 L* b
Dekker Inc; 2003:211-238.
f5 O! A. g. I9 ?4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
6 e2 E* |" B# d' Xdevelopment in a two-year-old boy induced by topical/ A5 M3 X; t8 b$ g2 _% o
exposure to testosterone. Pediatrics. 1999;104:e23.
/ c6 {+ K& u) G9 u$ B( m8 F5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
) a- D% N* q; s [Skeletal Development of the Hand and Wrist. 2nd ed.* ]! x0 q# p9 X+ D# }
Stanford, CA: Stanford University Press; 1959.; R) x+ H( P/ ~ N
6. Physicians’ Desk Reference. Androgel 1% testosterone,
- t: P% a3 r0 L+ GUnimed Pharmaceutical Inc. Montvale, NJ: Medical
2 z8 S+ |0 {0 B+ V' i7 gEconomics Company, Inc; 2004:3239-3241.
+ f8 S/ L5 q: R1 q |7. Klugo RC, Cerny JC. Response of micropenis to topical
7 [# d: e, `9 U: E6 v. x* Jtestosterone and gonadotropin. J Urol. 1978;119:9 b/ x" B9 G/ T* h
667-668.
; k4 t7 s2 U+ T3 _% w* k3 z/ C8. Guthrie RD, Smith DW, Graham CB. Testosterone
! b. @0 k v t, j7 Xtreatment for micropenis during early childhood. J Pediatr., ?- ]% k. H% M4 Q* K' L- m) V& I
1973;83:247-252.
% J. I1 h" `) H3 v# m) l' m! S9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone2 J- j2 b8 ?- V7 z# Z) `
therapy for penile growth. Urol. 1975;6:708-710.7 e* D9 s5 S' J/ R
10. Husmann DA, Cain MP. Microphallus: eventual phallic( V9 E) X" L) L* R
size is dependent on the timing of androgen administra-
6 ~: G$ T! d$ R% Dtion. J Urol. 1994;152:734-739.
4 w0 @: d' ?+ ?11. McMahon DR, Kramer SA, Husmann DA. Micropenis:2 k2 c$ ~# p3 J3 x
does early treatment with testosterone do more harm
( a. G- ]4 M' qthan good? J Urol. 1995;154:825-829.1 p& c2 x2 E, `( v$ ?, |. [& {6 X
12. Takane KK, George FW, Wilson JD. Androgen receptor
5 p9 [, s5 W, W B) L1 b8 Hof rat penis is down-regulated by androgen. Am J Physiol." D4 b! G2 c; W. i- |
1990;258:E46-E50.
^: p" k( n8 t4 L5 i13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect8 @0 |5 M9 F4 L. u/ B; X
of prepubertal androgen exposure on adult penile' U2 S8 N' B* t9 b) W3 v1 U% B' q& _) i
length. J Urol. 1996;156:783-787. |
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