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is a significant concern for physicians. Central
! U& w4 r3 I9 k9 M. i. B; T3 A+ qprecocious puberty (CPP), which is mediated) F9 Z. R: }' G' R% C
through the hypothalamic pituitary gonadal axis, has2 u- q4 \: n& K1 u* F
a higher incidence of organic central nervous system' Y" L: @3 W6 z6 i8 \
lesions in boys.1,2 Virilization in boys, as manifested+ s3 \* D- i6 T6 x
by enlargement of the penis, development of pubic
3 q9 T) B+ z) [9 B2 f! Chair, and facial acne without enlargement of testi-1 I" b* u6 _* ^5 N( d: z: _/ J) Y/ K
cles, suggests peripheral or pseudopuberty.1-3 We
9 h+ G7 W7 R3 g, _. e Oreport a 16-month-old boy who presented with the6 r3 w) _7 E' [# e0 M6 ^" b+ A
enlargement of the phallus and pubic hair develop-
% d d7 b0 |/ h; z* _3 j1 g: O; Nment without testicular enlargement, which was due
$ R/ \8 x9 F/ F1 L# W4 b4 yto the unintentional exposure to androgen gel used by3 S+ m/ T# e! D% X+ r
the father. The family initially concealed this infor-
1 d* _4 H8 Y( M9 pmation, resulting in an extensive work-up for this6 K9 Y+ q4 C. n, r; ?$ g2 Q5 Q
child. Given the widespread and easy availability of8 x- a1 R% ^0 ]7 P4 x0 u# ~. o5 K* r
testosterone gel and cream, we believe this is proba-+ _# n, m' ?; V3 N+ Y4 D% h
bly more common than the rare case report in the, @# R: g. M: w1 D. K* g7 I! I
literature.4: P9 |4 T, M! m! q
Patient Report
1 `; d# F1 `/ S" E% EA 16-month-old white child was referred to the/ G: b0 m; [9 o! _% B
endocrine clinic by his pediatrician with the concern9 s9 C B- L) G# u9 k& m
of early sexual development. His mother noticed v+ h$ i3 l' D+ E) C* y' h# Z
light colored pubic hair development when he was
4 n2 V6 `& u- z# X3 B% UFrom the 1Division of Pediatric Endocrinology, 2University of1 f; b+ n5 ?& ]/ w4 V% C& `
South Alabama Medical Center, Mobile, Alabama.
" S1 a" f. E# m: LAddress correspondence to: Samar K. Bhowmick, MD, FACE,
, h) g) V% m1 `+ fProfessor of Pediatrics, University of South Alabama, College of
) y3 [- s; v5 O6 ~7 b* O4 Y. q, t q0 wMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
6 J0 P' g+ C# {* }4 n: xe-mail: [email protected]., }+ d d, i' h
about 6 to 7 months old, which progressively became
$ L/ R; r/ ?6 e8 } S# q1 Ddarker. She was also concerned about the enlarge-9 L: v- U* H8 T! A' P9 f* _
ment of his penis and frequent erections. The child
: A6 X8 n5 h5 `8 x R9 h8 @was the product of a full-term normal delivery, with
% c: M( x* y8 _3 r# E/ b8 @# ]* P2 W0 ta birth weight of 7 lb 14 oz, and birth length of
0 Y. g3 l7 f9 L' v! u20 inches. He was breast-fed throughout the first year/ y0 v; A% Z( i9 ?* u; Y
of life and was still receiving breast milk along with
' u5 O& w% F9 W# b6 J" }/ _solid food. He had no hospitalizations or surgery,
! A4 R9 b/ U# ^! I( b' b: w! Fand his psychosocial and psychomotor development! N8 } C( j5 Y; n
was age appropriate.
; s/ ?& K7 k# X* YThe family history was remarkable for the father,8 B+ Q# j" E. H, L; k0 T3 R. W
who was diagnosed with hypothyroidism at age 16,
( e4 g9 F4 x/ z$ U$ ~which was treated with thyroxine. The father’s
* X: m/ A$ X }/ mheight was 6 feet, and he went through a somewhat
4 K, E4 ?+ I$ L# T" N' Kearly puberty and had stopped growing by age 14.
* J, a6 w+ d! z% ]9 G6 P9 AThe father denied taking any other medication. The
5 d, p: E7 Z7 N2 n+ `child’s mother was in good health. Her menarche* E8 N2 ]! P" s* D. I
was at 11 years of age, and her height was at 5 feet
% W1 k( t; C8 S7 D2 p5 inches. There was no other family history of pre-
) Z& k6 R3 }; acocious sexual development in the first-degree rela-( W. k4 x$ I8 U5 z4 X* w3 o: }
tives. There were no siblings.8 C8 o6 A* i, Y4 q
Physical Examination
0 T( ?* j0 n, W, BThe physical examination revealed a very active,
; v7 H, C- `) V- v' i/ dplayful, and healthy boy. The vital signs documented
" j) [/ ~; G4 D' d [6 ?& e) P5 Ha blood pressure of 85/50 mm Hg, his length was
, l5 A3 L4 S8 a2 Z* s& Q90 cm (>97th percentile), and his weight was 14.4 kg1 X2 E' B! _/ q
(also >97th percentile). The observed yearly growth- E7 o9 v& x/ G. p" Y
velocity was 30 cm (12 inches). The examination of
( Z6 D+ \/ Y8 u3 |8 n9 p6 Fthe neck revealed no thyroid enlargement., d+ x( r/ i* c3 _ Z: X
The genitourinary examination was remarkable for
( |. |2 K( e% w% Penlargement of the penis, with a stretched length of2 L" t% O/ L, \8 f! v% k
8 cm and a width of 2 cm. The glans penis was very well
0 ]9 ~8 k- K, Jdeveloped. The pubic hair was Tanner II, mostly around
# U+ J7 D, o8 i# z540! R8 A0 @6 g9 }' G. h
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from2 f6 S8 K1 ]8 _* k
the base of the phallus and was dark and curled. The
! d" B3 s$ E6 s: btesticular volume was prepubertal at 2 mL each.
3 T: Q3 i' h2 `# c$ R1 @1 UThe skin was moist and smooth and somewhat
0 ~9 c7 I: S* c8 c' c% D& a moily. No axillary hair was noted. There were no) ~: H4 ` O6 w' j" h( L5 C% l
abnormal skin pigmentations or café-au-lait spots.3 Q2 E* T6 b2 x- m! i- B
Neurologic evaluation showed deep tendon reflex 2+' C! X" R' [& N6 [
bilateral and symmetrical. There was no suggestion
2 f* p( ]& |6 k! eof papilledema./ C: l$ e8 d" \$ _) l
Laboratory Evaluation
: r+ i5 Y0 e6 P5 P4 o( [The bone age was consistent with 28 months by# d \4 H# u) ]
using the standard of Greulich and Pyle at a chrono-
" g5 V$ t$ j4 Q" i. flogic age of 16 months (advanced).5 Chromosomal
- s- @4 u9 @% }) R/ m1 U1 _7 Ykaryotype was 46XY. The thyroid function test: M1 ?) L& s- \% u" N) m
showed a free T4 of 1.69 ng/dL, and thyroid stimu-
3 |- i8 P! w' zlating hormone level was 1.3 µIU/mL (both normal)., W3 }/ ]/ D5 V5 ?. ]& i
The concentrations of serum electrolytes, blood
8 U- ?0 ]* E" E0 nurea nitrogen, creatinine, and calcium all were$ W. L4 K5 d, [ w. G* N0 B$ }! d; R
within normal range for his age. The concentration4 ~+ ^. s( h8 Y
of serum 17-hydroxyprogesterone was 16 ng/dL% d$ `! k7 c2 P( z: R P( P
(normal, 3 to 90 ng/dL), androstenedione was 20
, H' g3 }# ]+ `1 G. ?; mng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-1 Q$ f/ q6 N7 `1 D
terone was 38 ng/dL (normal, 50 to 760 ng/dL),
) a2 F5 l3 N# x0 [. q( Ddesoxycorticosterone was 4.3 ng/dL (normal, 7 to+ a6 O: V' T: z# S4 g) Q
49ng/dL), 11-desoxycortisol (specific compound S)8 e% D# [$ p* P% j8 a) g9 e
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-# z! n" _8 K1 h
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
, V2 Y. v2 y' A T- }testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
& L! e+ X ?! g* B! Xand β-human chorionic gonadotropin was less than& t' `- V0 D& W- O* i5 z5 I
5 mIU/mL (normal <5 mIU/mL). Serum follicular! O) @% L4 W' i
stimulating hormone and leuteinizing hormone
1 C Z& a, `& Lconcentrations were less than 0.05 mIU/mL: v( s6 \- y' j6 w
(prepubertal).
, o. s0 W$ v+ x" i/ ]' h( ~The parents were notified about the laboratory
! i2 N: C3 X: l: `- f) Presults and were informed that all of the tests were
0 i X* L* w: S# jnormal except the testosterone level was high. The- i/ m' G3 P4 p
follow-up visit was arranged within a few weeks to
% p: |8 x7 c& dobtain testicular and abdominal sonograms; how-
" l" z4 x: b. ^5 Iever, the family did not return for 4 months.& ?- Q5 D+ u$ L# A0 x) N
Physical examination at this time revealed that the
1 H( k) W) S* K' y' Y7 |' V3 Ychild had grown 2.5 cm in 4 months and had gained7 f0 w8 z l' Y) B& m
2 kg of weight. Physical examination remained4 O/ j; ]5 w# p6 R9 k
unchanged. Surprisingly, the pubic hair almost com-
; j+ `, `% S3 F/ T) \1 r$ s7 u: _pletely disappeared except for a few vellous hairs at5 ?4 r4 {* b1 C* e
the base of the phallus. Testicular volume was still 20 q: p( c0 o1 ?/ D: U: l: |* _
mL, and the size of the penis remained unchanged.
0 C( {* H* R8 C0 {The mother also said that the boy was no longer hav-7 Y; F+ e+ \, ]2 |* e3 u
ing frequent erections.8 ]0 H# J) L0 i! b
Both parents were again questioned about use of$ r# c. M2 o$ Q8 A" ]6 ]" a& M/ x, C
any ointment/creams that they may have applied to9 k* N5 |7 R- `4 @% `, g
the child’s skin. This time the father admitted the
8 C: x) ?3 }5 G! yTopical Testosterone Exposure / Bhowmick et al 541& d1 y; Y4 p; m b
use of testosterone gel twice daily that he was apply-
' a2 _7 J. Q: b8 K: ring over his own shoulders, chest, and back area for
% K: S- ?' S- q* t+ z7 C- ?1 wa year. The father also revealed he was embarrassed
$ c1 w+ B+ X* z5 A6 j6 g# ^to disclose that he was using a testosterone gel pre-" \0 T& }4 p8 j+ q+ b h1 p
scribed by his family physician for decreased libido
4 k0 F* V s/ W/ X) y2 C) [" x7 R6 p+ jsecondary to depression.
$ c# ^$ N7 @8 j5 p3 ~0 T, uThe child slept in the same bed with parents.8 n- }% v2 c+ k
The father would hug the baby and hold him on his; c2 _4 b1 N0 \ B% h4 @' f
chest for a considerable period of time, causing sig-3 J6 z3 T G* _# O7 C; p4 h
nificant bare skin contact between baby and father.
5 y9 V! f) O9 F, RThe father also admitted that after the phone call,
, [5 C* K) \; w. awhen he learned the testosterone level in the baby
8 O0 K7 C4 H! ^was high, he then read the product information
& A3 ^( Q3 D) Mpacket and concluded that it was most likely the rea-
/ h1 _1 T6 Y4 K2 \% ]3 U( ^0 Sson for the child’s virilization. At that time, they
& I) s) `, a/ ?, S& R& s6 qdecided to put the baby in a separate bed, and the
8 I% s# N3 U* T) H$ Rfather was not hugging him with bare skin and had" ~: Q5 h' s' m0 P+ n$ H- A
been using protective clothing. A repeat testosterone9 U* m$ [, I6 f
test was ordered, but the family did not go to the* `$ b4 A# e; }8 h
laboratory to obtain the test.& r' J7 C7 i% J" Z* ^( D5 ]+ O
Discussion
6 k+ {, c9 l) F+ g" g, F0 f) n, jPrecocious puberty in boys is defined as secondary
0 N% \2 u+ [0 `) g9 r Hsexual development before 9 years of age.1,41 j! b( q. [1 N
Precocious puberty is termed as central (true) when' t" x- Y/ x- H; G2 S* `
it is caused by the premature activation of hypo-6 {. V6 _/ h' v& }- n2 O
thalamic pituitary gonadal axis. CPP is more com-
* w+ X' e- W: A( U5 vmon in girls than in boys.1,3 Most boys with CPP. M4 I' a+ F- d3 i, t
may have a central nervous system lesion that is
7 W' N `1 ?! cresponsible for the early activation of the hypothal-
* j, b9 C X) U. s) V4 W/ ?( jamic pituitary gonadal axis.1-3 Thus, greater empha-2 O6 z2 J" V7 X1 A
sis has been given to neuroradiologic imaging in
# Q- q3 Y- S- i! q5 Wboys with precocious puberty. In addition to viril-
2 C# n& [$ q* T% E3 [ization, the clinical hallmark of CPP is the symmet-
5 b4 p7 U$ z9 E5 {7 S+ Arical testicular growth secondary to stimulation by# |2 P: s/ j2 y0 t; V# G. ~6 I
gonadotropins.1,3
5 ^( U1 ]+ J2 P' XGonadotropin-independent peripheral preco-
4 N' w R1 [ ~/ ~/ Bcious puberty in boys also results from inappropriate5 x$ Z- X$ s: `( B. D. o% ^9 K
androgenic stimulation from either endogenous or
' q* e9 R; a. h* lexogenous sources, nonpituitary gonadotropin stim-
: x( _* _1 ^4 W- O& uulation, and rare activating mutations.3 Virilizing7 U: C0 X0 \! d! h
congenital adrenal hyperplasia producing excessive" r& ^7 i8 O1 K. H. c$ [( u
adrenal androgens is a common cause of precocious
- ^# n7 ~% g p% l& ~% P) cpuberty in boys.3,43 q. h4 f# a7 |2 c1 M# G# R
The most common form of congenital adrenal8 Q, V- w8 E* ^
hyperplasia is the 21-hydroxylase enzyme deficiency.
6 J+ `/ y- n) l% bThe 11-β hydroxylase deficiency may also result in
' l/ ]. V% w0 [! E) c0 @6 o2 ^$ u4 D& dexcessive adrenal androgen production, and rarely,1 Y4 k6 T1 A1 c. q
an adrenal tumor may also cause adrenal androgen
+ a8 Y9 P2 t$ F- }excess.1,38 c: z+ v9 y# G& N; A& o2 O
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from0 H8 i% l7 ]" v
542 Clinical Pediatrics / Vol. 46, No. 6, July 20074 H2 m! G8 R* @0 p
A unique entity of male-limited gonadotropin-6 S6 o' g1 A1 V. O
independent precocious puberty, which is also known6 c/ _" A3 d( N! ]
as testotoxicosis, may cause precocious puberty at a% y$ W7 i+ _6 S0 u- }9 E* g
very young age. The physical findings in these boys
; k; t3 _# R% u9 ]with this disorder are full pubertal development,3 c" t( t1 K& p
including bilateral testicular growth, similar to boys H( x: n% d/ {9 R9 G3 S7 U' S8 d
with CPP. The gonadotropin levels in this disorder W& @4 J# k3 X5 Q8 k
are suppressed to prepubertal levels and do not show4 j3 G' `: {# }
pubertal response of gonadotropin after gonadotropin-3 z8 }0 ?; q' L: A+ d8 e; S
releasing hormone stimulation. This is a sex-linked( C) L9 B( q) ?! S3 \, |& ]
autosomal dominant disorder that affects only
, x/ x5 ^" M+ w+ Wmales; therefore, other male members of the family
6 X+ ]3 R' s- m4 k# Bmay have similar precocious puberty.3& X* ]2 X' {' N' t' [
In our patient, physical examination was incon-
" C( U6 O# U& k' N h9 J' c( z" nsistent with true precocious puberty since his testi- N5 p; m( W+ H6 |
cles were prepubertal in size. However, testotoxicosis2 M; y1 r' J+ e, Z* L+ m2 \
was in the differential diagnosis because his father( I' b, b2 }' N9 Q! L6 \! V5 M
started puberty somewhat early, and occasionally,7 u* q, M1 t* g6 Y
testicular enlargement is not that evident in the
, H1 v0 a8 X7 S2 G& M9 E2 Abeginning of this process.1 In the absence of a neg-% o. n3 \$ z2 c9 @' y- m9 y9 I
ative initial history of androgen exposure, our$ _2 [; t+ L' j, b) T
biggest concern was virilizing adrenal hyperplasia,. A# o8 a6 n4 H. C
either 21-hydroxylase deficiency or 11-β hydroxylase
: R/ Z6 H& x5 W$ ]" x4 zdeficiency. Those diagnoses were excluded by find-
2 B. k6 d) I( l! S1 e% X+ S w8 King the normal level of adrenal steroids.! h8 w% I2 i7 A1 m3 J5 K1 @
The diagnosis of exogenous androgens was strongly
- l3 m: f( D* u3 o- q6 V6 \suspected in a follow-up visit after 4 months because
2 B D6 ]9 n# p/ x7 othe physical examination revealed the complete disap-: k+ _, a" [6 a4 w; l5 {6 N- @
pearance of pubic hair, normal growth velocity, and: i( u0 x6 _" q' M
decreased erections. The father admitted using a testos-3 G1 F; i6 O9 u: N7 i% {5 |
terone gel, which he concealed at first visit. He was
$ Z+ U$ @1 o) z# b* M. D/ Tusing it rather frequently, twice a day. The Physicians’
* I4 O- m9 ^# H6 ]% n% i7 x5 VDesk Reference, or package insert of this product, gel or
6 n$ C7 A6 @; K. a" P: o/ Z, \cream, cautions about dermal testosterone transfer to
9 k9 F7 I# g2 f$ U; J$ K1 C6 xunprotected females through direct skin exposure.
( t; V; ]- |5 Y1 S& z- T8 D* USerum testosterone level was found to be 2 times the
$ _' W9 [7 L) D3 jbaseline value in those females who were exposed to
, m @8 k# M; {even 15 minutes of direct skin contact with their male8 ]# v2 K' F: l9 `6 _' _# n
partners.6 However, when a shirt covered the applica-
7 Y6 S% N$ P. i/ H- [5 @& [- ntion site, this testosterone transfer was prevented.
- F5 @3 a% b# \$ w, w; jOur patient’s testosterone level was 60 ng/mL,0 @5 r' _% h: T5 y. w
which was clearly high. Some studies suggest that
; ^2 |8 p( G9 z4 j/ L; O/ a7 Zdermal conversion of testosterone to dihydrotestos-6 ^! ^9 k8 I# f2 X
terone, which is a more potent metabolite, is more
. u @ H8 q, L! mactive in young children exposed to testosterone, Y6 a) K+ B/ a" V
exogenously7; however, we did not measure a dihy-" G) M3 g% e: Z( Q3 L+ [
drotestosterone level in our patient. In addition to
4 \! l; d/ N' R R+ Vvirilization, exposure to exogenous testosterone in) D7 t3 R8 G |3 F# @' F# @
children results in an increase in growth velocity and( H( R/ U' v1 n+ Q& P( Z; [
advanced bone age, as seen in our patient.. _# a# M4 u; P6 X
The long-term effect of androgen exposure during3 t& T, W' T; ~ p* l3 j
early childhood on pubertal development and final
( f$ g I0 ^' t8 gadult height are not fully known and always remain6 R+ }- i2 Y- P v" H I( V
a concern. Children treated with short-term testos-
9 E+ O! j. t7 B/ _% W$ i3 j; fterone injection or topical androgen may exhibit some# v: P3 k$ q4 O+ e
acceleration of the skeletal maturation; however, after
5 [5 }0 {. \5 S! N! D/ Ycessation of treatment, the rate of bone maturation
/ j3 y# ~+ D! P( ~! u R% @decelerates and gradually returns to normal.8,9, H( Q4 ^! I; G. `* {2 Q( }0 z: I
There are conflicting reports and controversy
: U; l; \4 `! T) ?8 W4 k' x5 Wover the effect of early androgen exposure on adult
) n3 x' J) {; ?3 g) zpenile length.10,11 Some reports suggest subnormal5 _2 G7 f. i6 |7 y- \
adult penile length, apparently because of downreg-
9 Z% L# |9 e' e/ sulation of androgen receptor number.10,12 However,; V$ G' G! e$ [/ @
Sutherland et al13 did not find a correlation between, c9 \( ~$ h8 z3 R0 T
childhood testosterone exposure and reduced adult
. ^/ g2 y: n, I9 F' D& Cpenile length in clinical studies.
, X. Z. }4 `# R( ]& @6 e6 YNonetheless, we do not believe our patient is- n# i. e/ t; R0 M0 _; I- W) g
going to experience any of the untoward effects from0 N, H7 l, B# x2 z# ^) M E6 c
testosterone exposure as mentioned earlier because
$ V L0 [$ c6 `; Qthe exposure was not for a prolonged period of time.
0 r4 L+ Y1 \* I qAlthough the bone age was advanced at the time of
% X1 F) H* j& Q( O! B+ Ddiagnosis, the child had a normal growth velocity at9 Y* v# E' L, `6 ]& ~
the follow-up visit. It is hoped that his final adult+ J. i0 _1 M; ~6 @! c# A) t
height will not be affected.
+ }8 x! M. Z t( p! o! G9 `Although rarely reported, the widespread avail-
0 G, s+ p$ k3 {9 Qability of androgen products in our society may7 ^) r; s! W3 F8 _: ?9 u" \+ h! G0 X
indeed cause more virilization in male or female! j. F+ b7 a2 y. S4 x
children than one would realize. Exposure to andro-: r) I! G! e" F* y& u
gen products must be considered and specific ques-
& B) z' r* _6 o. V0 Y/ htioning about the use of a testosterone product or
1 u5 u& }3 y, @" @* w( @gel should be asked of the family members during) F8 h; X5 f7 y) e0 j' h5 w
the evaluation of any children who present with vir-
+ d. v {1 d# Ailization or peripheral precocious puberty. The diag-' N- N) t$ S' l8 h! v/ X
nosis can be established by just a few tests and by
1 f, O% @/ j8 Jappropriate history. The inability to obtain such a7 Y0 P4 {" G) R5 ?$ p* L
history, or failure to ask the specific questions, may! g% |0 g5 \5 |0 ]# k) }
result in extensive, unnecessary, and expensive, [6 U0 F1 X+ b2 d2 d; x5 D
investigation. The primary care physician should be! M5 ]; |! S, Z! I' _& O+ Y
aware of this fact, because most of these children
7 r1 V- R$ r, W' q9 v* ~may initially present in their practice. The Physicians’ V9 p M6 E! y( _9 h% X
Desk Reference and package insert should also put a
2 D6 Y5 h8 D. R. U1 C/ Gwarning about the virilizing effect on a male or F3 T/ ~, v9 [! E* E, Z7 ~
female child who might come in contact with some-
% q7 f3 Y. ^3 V4 I Wone using any of these products.( x( v- C0 ^# A" }% |( Z
References Y6 s8 G' ~9 Q- C1 R
1. Styne DM. The testes: disorder of sexual differentiation6 d) ~' Q5 q9 ^4 }4 b' [9 Z
and puberty in the male. In: Sperling MA, ed. Pediatric
0 ~* `9 h" ?9 o U) H: ^2 QEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;! l( L6 |$ a7 A1 U- b' S! R0 a
2002: 565-628.- D9 l6 P( B# m- [% m' K
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
! j* ? k( N. q* u. P" F, k8 ^+ T9 ]puberty in children with tumours of the suprasellar pineal* i# v. }) q4 U0 @8 G R( A
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from& U4 S* t" D: \
Topical Testosterone Exposure / Bhowmick et al 543
: k! t& N G: Y# |areas: organic central precocious puberty. Acta Paediatr.
% p) ~* ], P4 c9 J, d2001;90:751-756.
4 r2 \4 J1 F& X3 }5 Z" _1 x3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
. v G/ Z6 J4 K. q1 Y$ `- F9 g' vPediatric Endocrinology. 4th ed. New York, NY: Marcel
( b" N! x( V- M; _3 l5 B) I2 J: ]Dekker Inc; 2003:211-238.
. j+ Q4 x6 j( k8 Y+ C) E4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual$ T, h- g, q+ b0 M; Z8 K& q% ]& B
development in a two-year-old boy induced by topical+ v) X# L3 {0 A" B$ G1 U4 [; `
exposure to testosterone. Pediatrics. 1999;104:e23.
$ d; e6 B" A/ s$ o* H2 r5 R5. Greulich WW, Pyle SI, eds. Radiographic Atlas of& c9 p9 {3 g* b* H
Skeletal Development of the Hand and Wrist. 2nd ed.4 q3 L; S7 ]/ g8 b) U: f3 C/ a
Stanford, CA: Stanford University Press; 1959.
: W* I4 |( Q3 D; f6. Physicians’ Desk Reference. Androgel 1% testosterone,4 ?3 t" j6 N0 a' s
Unimed Pharmaceutical Inc. Montvale, NJ: Medical
) h. h' X5 C' ?" I$ [' F, V bEconomics Company, Inc; 2004:3239-3241.) [. ?7 x( _7 I; q) r
7. Klugo RC, Cerny JC. Response of micropenis to topical# `, E# o7 Z" n% [- j" v
testosterone and gonadotropin. J Urol. 1978;119:
) }% f# o/ x6 d$ g2 l. R667-668.) C- Q9 x# G: J" e
8. Guthrie RD, Smith DW, Graham CB. Testosterone
$ \ S, L7 Q0 H8 [4 ?1 ]3 z. Ptreatment for micropenis during early childhood. J Pediatr.. z1 I- ^( u" C3 X
1973;83:247-252.
7 N" _- l* ?. \# Q% }7 [, @6 L1 d9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone) w6 e' H7 r2 `
therapy for penile growth. Urol. 1975;6:708-710." T1 B$ Q1 a, J% j4 k, C5 D5 T
10. Husmann DA, Cain MP. Microphallus: eventual phallic
, U4 u4 \ Z S Lsize is dependent on the timing of androgen administra-* R' t. t$ Y2 Q$ v' _+ E [5 o
tion. J Urol. 1994;152:734-739.
( w- q" Q) k7 \; r3 Z- a; {) s4 W11. McMahon DR, Kramer SA, Husmann DA. Micropenis:
2 O, x# N4 z8 s9 r5 _/ n8 r- M' Q/ @does early treatment with testosterone do more harm& s, t! ?* ^6 L D9 N d
than good? J Urol. 1995;154:825-829.
8 `$ t2 V5 u. M6 |12. Takane KK, George FW, Wilson JD. Androgen receptor
7 q: U2 q7 q8 W- C, _of rat penis is down-regulated by androgen. Am J Physiol.) c. j0 \6 ~7 p: x, p* l
1990;258:E46-E50.
. T9 v* [* e, T' a, a* W13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect
; M) V) \0 d* L" x6 C- Oof prepubertal androgen exposure on adult penile
+ K# l' M8 ]" v/ K$ X$ Q: Tlength. J Urol. 1996;156:783-787. |
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