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is a significant concern for physicians. Central2 l- ?" o, O& K; D* @" K; D) T
precocious puberty (CPP), which is mediated/ ^& H S2 J; c) V7 f5 }9 y6 X
through the hypothalamic pituitary gonadal axis, has3 f8 g/ f4 S' H# \' B1 E
a higher incidence of organic central nervous system
5 V, l+ L" m! e: Slesions in boys.1,2 Virilization in boys, as manifested9 b! f$ h4 j% h( d# Y
by enlargement of the penis, development of pubic8 d v: t1 z" `0 T9 k
hair, and facial acne without enlargement of testi-& g" K* Y4 ~8 z$ e0 j9 ^3 K
cles, suggests peripheral or pseudopuberty.1-3 We6 M3 C4 {& H3 c* R
report a 16-month-old boy who presented with the5 v! F5 u! N h0 D) ?
enlargement of the phallus and pubic hair develop-0 s& z) i% F: R" Z- t( j- p4 |
ment without testicular enlargement, which was due* h8 g) V( m$ M# a7 i1 C
to the unintentional exposure to androgen gel used by
5 _/ ], M( x, y wthe father. The family initially concealed this infor-/ G0 e1 R: [ h) ^: A; B
mation, resulting in an extensive work-up for this
( G: a5 x. B0 W4 _: C. Jchild. Given the widespread and easy availability of
5 ]$ z6 {9 h& Z& H b$ rtestosterone gel and cream, we believe this is proba-
) `4 b7 X3 q, K: J1 I, d1 s& x! jbly more common than the rare case report in the
" b5 B+ U* _& V. J; Nliterature.4
$ z, I0 T2 f$ q( z& PPatient Report8 }5 {' i, {4 E8 g3 p
A 16-month-old white child was referred to the
]. O0 e& n, @$ e t1 xendocrine clinic by his pediatrician with the concern
" P, ]0 _& ` k/ I) c1 kof early sexual development. His mother noticed3 h# }- E; b1 p. b/ m( w
light colored pubic hair development when he was$ ]$ m3 O% F9 k0 J6 [
From the 1Division of Pediatric Endocrinology, 2University of
/ Z4 p2 j# G0 d+ n& C- h% Y7 ]0 [South Alabama Medical Center, Mobile, Alabama.
- V2 L# T) j' L7 _: P5 JAddress correspondence to: Samar K. Bhowmick, MD, FACE,
( |5 P7 B; \+ H# R J; KProfessor of Pediatrics, University of South Alabama, College of
$ c; h7 P$ z- c, hMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
9 I9 z1 F, a; g5 C1 u$ c5 Ye-mail: [email protected].
9 S6 q% B: a7 v5 w7 n6 Z& I! J; @5 Fabout 6 to 7 months old, which progressively became
& t" s7 X9 C& ^- q) ]! h! J1 Kdarker. She was also concerned about the enlarge-
/ X+ D J/ d9 K; r9 Tment of his penis and frequent erections. The child, U5 }( n" r9 |, f, [7 D
was the product of a full-term normal delivery, with
- F# i8 `/ }, m7 Ca birth weight of 7 lb 14 oz, and birth length of9 k4 j& ^6 x5 W9 o. y$ R7 x) F
20 inches. He was breast-fed throughout the first year8 b3 B, r) s& F) W1 G% G7 z
of life and was still receiving breast milk along with9 Z9 t! I: U# S, _. z6 k
solid food. He had no hospitalizations or surgery,
- L& H/ u2 y, W) E8 v! Iand his psychosocial and psychomotor development+ K0 U9 Z/ M7 o, B+ H: i
was age appropriate.: l( [! _& O( Y3 ~7 z5 G* s
The family history was remarkable for the father,; \& I+ p0 U; _. Y& z9 V1 u; J) j
who was diagnosed with hypothyroidism at age 16,& ?) G$ |6 c ?* E, r5 X
which was treated with thyroxine. The father’s1 f' k2 J- X' P) S9 v5 s
height was 6 feet, and he went through a somewhat* ?" J5 m8 K9 b y! g6 h* b
early puberty and had stopped growing by age 14./ D/ m$ e s: X; t/ X
The father denied taking any other medication. The+ D! I+ {, A7 c3 l, E, ?
child’s mother was in good health. Her menarche( y" o6 E% z: I7 `* ^$ D
was at 11 years of age, and her height was at 5 feet4 T+ y1 W/ g' u9 D
5 inches. There was no other family history of pre-
1 s* i7 q# @1 L& o& I: }- wcocious sexual development in the first-degree rela-
: g& r5 \1 j$ b, itives. There were no siblings.
, z; }5 b! U' m2 l- C2 U0 rPhysical Examination: E# h. d0 w! j! m4 z0 B, Z5 j3 |
The physical examination revealed a very active,) S7 d0 D8 ?: [9 i! m; |* u" j
playful, and healthy boy. The vital signs documented4 q' c" F8 |) Q2 e1 L7 z
a blood pressure of 85/50 mm Hg, his length was
+ v: h* k9 J. c6 q7 p0 W! J90 cm (>97th percentile), and his weight was 14.4 kg
# `. r: N& t+ E @/ `9 E& `(also >97th percentile). The observed yearly growth
9 K% J5 j$ }6 a% _velocity was 30 cm (12 inches). The examination of
/ C* h3 [8 Q, C2 W2 B8 f" L( nthe neck revealed no thyroid enlargement.9 W9 N0 i$ U; D- F
The genitourinary examination was remarkable for
0 {7 w# l3 L/ B1 Q! }1 c- s, Ienlargement of the penis, with a stretched length of! T9 [1 e5 v+ L% A/ x9 [- v
8 cm and a width of 2 cm. The glans penis was very well
2 j- \. O0 g8 Vdeveloped. The pubic hair was Tanner II, mostly around! w0 P2 \5 n) i5 T% K" L/ v' F
540& r% U0 F7 }/ n, ~ o' S& K
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from0 f2 T% Z6 k; ~9 [1 w/ o
the base of the phallus and was dark and curled. The; _5 c* d+ f/ ^# o% S2 H
testicular volume was prepubertal at 2 mL each.6 s: O; M& x8 Q1 w% `' Y! T
The skin was moist and smooth and somewhat8 A8 S8 k3 c9 f
oily. No axillary hair was noted. There were no
/ `' l& |* e( U* d" Uabnormal skin pigmentations or café-au-lait spots.
2 [7 u- `0 E( n2 o8 A& R' d! P/ Q# n& QNeurologic evaluation showed deep tendon reflex 2+
& Y8 u% L* R3 @# e5 Ybilateral and symmetrical. There was no suggestion) C. @" p' G$ E
of papilledema.
8 i' ]1 |7 e# ZLaboratory Evaluation2 H/ w: {8 z0 b6 w6 y) g9 @5 M) d* q
The bone age was consistent with 28 months by7 h1 t, U% D, [$ `6 Y
using the standard of Greulich and Pyle at a chrono-
) W! S( Y# v! w1 P0 t; n% zlogic age of 16 months (advanced).5 Chromosomal2 H+ M( b) q6 o( o
karyotype was 46XY. The thyroid function test/ w8 `) C: z+ n& l
showed a free T4 of 1.69 ng/dL, and thyroid stimu-
- T6 d; t$ {* {# z* W* V0 a' A$ plating hormone level was 1.3 µIU/mL (both normal).+ ]8 H" i1 {% v! p: X
The concentrations of serum electrolytes, blood
( w8 r/ [3 t/ t5 ~2 Lurea nitrogen, creatinine, and calcium all were
9 z, z; n0 o$ y6 n" P/ uwithin normal range for his age. The concentration' k* {- o3 q6 J9 F1 G3 P
of serum 17-hydroxyprogesterone was 16 ng/dL9 q/ q( c, g" d- X2 {+ o* C0 U# g( t
(normal, 3 to 90 ng/dL), androstenedione was 208 A9 l d' k# b4 [
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-+ u& x( ^1 `6 X* W8 q$ C
terone was 38 ng/dL (normal, 50 to 760 ng/dL),1 y1 z- n1 c* D( l3 n; l
desoxycorticosterone was 4.3 ng/dL (normal, 7 to6 c. Z4 L$ {6 [/ m* o$ H
49ng/dL), 11-desoxycortisol (specific compound S)2 B8 X ]/ n, y; A5 p2 p, s
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-) s! ~7 M9 ^9 f. Q
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total1 \5 `4 \7 R4 o" n( w
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
* p* b, P- n% x5 [0 e& w( eand β-human chorionic gonadotropin was less than6 p) T) o) o' I/ k2 N
5 mIU/mL (normal <5 mIU/mL). Serum follicular& n% {- m9 e$ W" Z
stimulating hormone and leuteinizing hormone
$ s, |1 w1 W O! S5 aconcentrations were less than 0.05 mIU/mL. d5 _9 g y" F9 [, {" E
(prepubertal)., {. Y% ^0 |- g- A( e, b* C
The parents were notified about the laboratory
# m" T6 }* l# Tresults and were informed that all of the tests were
* l& v" t" z) q6 z% T. f) J* m/ m1 Cnormal except the testosterone level was high. The4 x) S: q5 N5 e' d0 E
follow-up visit was arranged within a few weeks to
. e' q6 A5 G" o% u$ N+ G/ ?! mobtain testicular and abdominal sonograms; how-/ b5 p I: D% U2 h; S
ever, the family did not return for 4 months.
; k+ s9 z" @$ H% O8 U5 o5 m6 [Physical examination at this time revealed that the. F% u3 J" ?& S7 p8 G( m5 E
child had grown 2.5 cm in 4 months and had gained9 _0 J4 F0 b, m" X3 `- J/ V y
2 kg of weight. Physical examination remained5 F* y/ T0 ]7 }7 O: e, H
unchanged. Surprisingly, the pubic hair almost com-
3 b% N1 y3 Q! m9 K2 Rpletely disappeared except for a few vellous hairs at
$ V8 V4 v2 f* N9 ? w1 L- Fthe base of the phallus. Testicular volume was still 27 n& {! c; Y. g- o) A4 r! R" ~
mL, and the size of the penis remained unchanged.& t( f4 A# J( k g' h
The mother also said that the boy was no longer hav-
; _0 _ }5 h3 {- p. Ting frequent erections.
+ F( l m5 Q( ^' Z5 }+ ]Both parents were again questioned about use of V0 S6 W6 r4 y/ A# g
any ointment/creams that they may have applied to3 E9 `, t: _9 A9 X
the child’s skin. This time the father admitted the
# o) m' m1 S$ _6 [. ATopical Testosterone Exposure / Bhowmick et al 541
/ s( C4 }) j6 O: B: U( I7 C4 E# C: }use of testosterone gel twice daily that he was apply-& e& Z7 E( r' J+ U/ _/ y
ing over his own shoulders, chest, and back area for
. B4 R! x0 @6 Z; b, la year. The father also revealed he was embarrassed
" C' d" ]/ L6 i; kto disclose that he was using a testosterone gel pre-5 F* [4 A! x* i' d$ W. i
scribed by his family physician for decreased libido+ [( A. H2 K2 F, _) h
secondary to depression.0 f" x) X' O, ]3 r# f- g
The child slept in the same bed with parents.
Q! ?2 U; r" j8 Y6 j& wThe father would hug the baby and hold him on his
: Y3 S0 T" k, M" H2 c6 Q# dchest for a considerable period of time, causing sig-' K8 y8 J# V% T8 Z
nificant bare skin contact between baby and father.. @ o0 ^8 U1 v( w9 A( w' D
The father also admitted that after the phone call,
( \: b$ _5 U3 t o/ ^: q Hwhen he learned the testosterone level in the baby e: m0 u$ s: t+ T
was high, he then read the product information2 t; ?# _2 }4 B5 P0 w$ R: _
packet and concluded that it was most likely the rea-
& q5 L; ?3 v d) j" Q+ r9 m9 sson for the child’s virilization. At that time, they+ W; A9 i2 x0 U( B0 X ^
decided to put the baby in a separate bed, and the
, e* f: ^; A' C; r7 f1 ffather was not hugging him with bare skin and had
; i1 D' @' I. o9 Sbeen using protective clothing. A repeat testosterone9 v$ F: c2 f" v' }% \' w
test was ordered, but the family did not go to the
0 e, M( m, P, O: _- [laboratory to obtain the test.
/ G6 v7 L$ w/ ]7 O% uDiscussion. [ _8 R/ j- L6 z
Precocious puberty in boys is defined as secondary
2 y* V1 J8 v0 r: ssexual development before 9 years of age.1,4
, _3 d5 p( _- h& p- U' |Precocious puberty is termed as central (true) when+ ` d" \" |, [% T
it is caused by the premature activation of hypo-) a, @4 y6 B9 Q" P" A* a& s/ \+ W
thalamic pituitary gonadal axis. CPP is more com-: r2 v$ K# ?0 t* ~# {9 }4 v
mon in girls than in boys.1,3 Most boys with CPP5 L) e" I$ _* x! m
may have a central nervous system lesion that is
f6 p. b( W6 m" [9 B! m* h2 ^responsible for the early activation of the hypothal- e+ ]/ y7 ^# U% _
amic pituitary gonadal axis.1-3 Thus, greater empha-
1 c4 s! u j. dsis has been given to neuroradiologic imaging in
3 O9 D0 t9 g, g! c( U5 y/ Fboys with precocious puberty. In addition to viril-" c+ h" E* b# [& V
ization, the clinical hallmark of CPP is the symmet-
# k0 h! h0 n6 d' Grical testicular growth secondary to stimulation by
$ J/ ~( {) M) U2 d# fgonadotropins.1,3
; E* B' U/ N% A: ?* G6 _Gonadotropin-independent peripheral preco-
3 U3 J' ` A* U! Y) A. H' [( \cious puberty in boys also results from inappropriate
# V* ]; E" {/ ?# Kandrogenic stimulation from either endogenous or
. s" ?0 a) d+ _7 U4 j6 ^/ Sexogenous sources, nonpituitary gonadotropin stim-
, X0 m9 v- t2 F1 D; ]ulation, and rare activating mutations.3 Virilizing; O% r, f' @+ T2 N' ~+ ]/ W. V
congenital adrenal hyperplasia producing excessive
! u ~0 N4 W6 v& \7 x- T! [( R2 Yadrenal androgens is a common cause of precocious
: t: O/ C0 E- ]: X4 q. f5 Ypuberty in boys.3,4
@: N+ b" A: o4 M; I' e8 UThe most common form of congenital adrenal, c) U7 g8 c* ?7 _, R
hyperplasia is the 21-hydroxylase enzyme deficiency.8 ], b3 t: |8 T4 ]% Y8 F
The 11-β hydroxylase deficiency may also result in
) c0 }6 V, L- G3 N( bexcessive adrenal androgen production, and rarely,6 T/ M* Y! k, S
an adrenal tumor may also cause adrenal androgen
" d6 M* _1 C1 Qexcess.1,36 z3 e+ m" i* e- y K
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
6 H7 C1 \, Z+ N542 Clinical Pediatrics / Vol. 46, No. 6, July 2007! P s3 w1 r# Y% n/ p" U2 J
A unique entity of male-limited gonadotropin-
. I+ ~3 ] g8 N8 t: i; J6 Sindependent precocious puberty, which is also known
* V" {- P" P$ ]: `" ^0 ?as testotoxicosis, may cause precocious puberty at a
" @ [$ M& |2 [ g9 L6 s5 S( nvery young age. The physical findings in these boys
6 t9 a; e" o) h7 ~* p2 C8 Rwith this disorder are full pubertal development,
8 {% r. |2 G" H$ q9 X. T( Dincluding bilateral testicular growth, similar to boys) r0 j) o9 z! r( h0 H6 \
with CPP. The gonadotropin levels in this disorder0 n i! x$ o e: V) ~" ]7 ?' K
are suppressed to prepubertal levels and do not show
% t7 \; |& T, D8 f" ]9 qpubertal response of gonadotropin after gonadotropin-
! [6 ]* @" F. xreleasing hormone stimulation. This is a sex-linked
; \9 C2 G% n5 U) l4 {) y& Qautosomal dominant disorder that affects only9 h* ]6 B1 p$ `+ h
males; therefore, other male members of the family3 z. ?& p. M5 Y2 i6 I
may have similar precocious puberty.3
; ^" F4 n4 X2 U& X- r0 J1 sIn our patient, physical examination was incon-0 D: R' p% t2 s: X j7 Z* b9 O
sistent with true precocious puberty since his testi-
1 d9 j. ~& E! ]- N5 Vcles were prepubertal in size. However, testotoxicosis. o1 d- o& x* f1 K8 @, S
was in the differential diagnosis because his father
6 O- ~! G% ~: w. u0 r- Dstarted puberty somewhat early, and occasionally,) D2 L! I( M# e# p
testicular enlargement is not that evident in the
; R# [9 s3 p$ g% Y H: Sbeginning of this process.1 In the absence of a neg-9 U# E* t+ N. Y5 g! t+ ?! i- j) w
ative initial history of androgen exposure, our
& \+ |2 Z" h' j$ ~" Q5 A% Zbiggest concern was virilizing adrenal hyperplasia,$ q* k+ _8 [# f* C
either 21-hydroxylase deficiency or 11-β hydroxylase H- Q( u! h! T6 X7 h( }/ v4 J
deficiency. Those diagnoses were excluded by find-
, x2 L3 }& ]/ Fing the normal level of adrenal steroids.1 E2 G8 P& c3 j c# S) @; b
The diagnosis of exogenous androgens was strongly
& s+ l* r. A: X! osuspected in a follow-up visit after 4 months because! j' W0 H& u4 u$ b- n/ ]
the physical examination revealed the complete disap-
# E f/ B7 U: Z! T/ {pearance of pubic hair, normal growth velocity, and; D Z) {1 z# n1 [
decreased erections. The father admitted using a testos-
$ Y7 c a0 K0 @terone gel, which he concealed at first visit. He was
0 e' s: _# E( M+ rusing it rather frequently, twice a day. The Physicians’
3 k! _8 l* g( J3 `" vDesk Reference, or package insert of this product, gel or+ W- O+ @" w9 _: r( ^: E8 v9 |3 z
cream, cautions about dermal testosterone transfer to& v( {" h, G( n. C: N
unprotected females through direct skin exposure.* V+ U' w% z4 ?7 t) w
Serum testosterone level was found to be 2 times the
1 V" {5 X$ O+ j; R i q. ~baseline value in those females who were exposed to
: g4 {- J8 ]/ o4 x+ L2 U p+ Teven 15 minutes of direct skin contact with their male5 f6 Q4 V2 D) {* X8 n' G+ m8 x
partners.6 However, when a shirt covered the applica-3 I+ Q, t0 i6 V& T: E$ G
tion site, this testosterone transfer was prevented.$ z# b+ {; q9 C( |8 o
Our patient’s testosterone level was 60 ng/mL,
5 j0 e% ], B x' xwhich was clearly high. Some studies suggest that
& }7 k6 g; u! }' Z9 b8 q$ u Udermal conversion of testosterone to dihydrotestos-# n' Y, j* H5 v- V9 Y
terone, which is a more potent metabolite, is more, [! K9 i& i5 S- j7 K
active in young children exposed to testosterone
- \: Y6 `* j) o( e/ c) nexogenously7; however, we did not measure a dihy-5 f7 ~2 r: O! T: C7 \
drotestosterone level in our patient. In addition to
$ m" j$ H, w: ?: u# dvirilization, exposure to exogenous testosterone in
+ ^# N R. i- [% }. t+ f' ychildren results in an increase in growth velocity and9 B7 A8 u7 V' h$ t9 T/ h
advanced bone age, as seen in our patient.
. P0 n; ]3 F* J+ HThe long-term effect of androgen exposure during) I6 g# p1 j# b! j* W5 r5 G
early childhood on pubertal development and final4 ~* _0 H1 c; d5 {/ X+ p
adult height are not fully known and always remain
3 e# V! z" }" Z' N; T( M% Y6 Pa concern. Children treated with short-term testos-3 \. d: s# K6 q$ |( q* F, w6 o3 i
terone injection or topical androgen may exhibit some
: j! a6 q8 S7 `: X& Pacceleration of the skeletal maturation; however, after, i- s8 u8 C0 |7 A
cessation of treatment, the rate of bone maturation' u3 h$ \( b$ T( A) L
decelerates and gradually returns to normal.8,9
) y! @9 x2 H( H4 lThere are conflicting reports and controversy' r% k$ e) K! k$ L. t6 Q
over the effect of early androgen exposure on adult
; F8 o0 J6 G) A* L, ~$ I$ C, Ipenile length.10,11 Some reports suggest subnormal* h# g& f1 j3 d3 G- o* R B
adult penile length, apparently because of downreg-
' e0 k+ v; t" R/ |ulation of androgen receptor number.10,12 However,
; }& ?( q8 F" W# QSutherland et al13 did not find a correlation between
. `' H6 a V9 }. k# l- {; Qchildhood testosterone exposure and reduced adult
% t3 O" t$ ]6 f7 Bpenile length in clinical studies.# B: n% Z' a2 R
Nonetheless, we do not believe our patient is; Y" b% r/ O0 k) }4 X+ K& Q
going to experience any of the untoward effects from
& }! ~: [2 C* q; i6 btestosterone exposure as mentioned earlier because3 y( Z3 q i, h9 o& u9 y
the exposure was not for a prolonged period of time.+ a( v b: b6 @
Although the bone age was advanced at the time of- x% w$ d# S8 a! I; I( T# t) W
diagnosis, the child had a normal growth velocity at
$ R% c$ v9 n1 }4 Othe follow-up visit. It is hoped that his final adult
0 Z1 \- Y/ y& c3 Z+ _0 d, wheight will not be affected.
3 Q. c) J8 e" u7 YAlthough rarely reported, the widespread avail-/ B+ |1 l) ]9 G4 u2 ], v
ability of androgen products in our society may
2 g* a# b5 x# f9 K1 Iindeed cause more virilization in male or female' X+ ?: k% t; X0 | `4 s+ U
children than one would realize. Exposure to andro-
& c' [% N: @9 `$ H+ sgen products must be considered and specific ques-% E U5 c: X; t: j
tioning about the use of a testosterone product or+ t1 g' W: _3 c/ N4 I6 @1 b
gel should be asked of the family members during
7 e5 ?1 u4 C/ x1 c& ~! Q& kthe evaluation of any children who present with vir-, }3 a9 ?5 C' v: h6 z" M+ x
ilization or peripheral precocious puberty. The diag-& r6 i+ B8 q5 c+ {' z, |- S1 f! i
nosis can be established by just a few tests and by
, o4 D+ l1 u4 y+ w% v+ Z; b$ W( Dappropriate history. The inability to obtain such a
- h/ U7 p. s1 }8 b& E9 Bhistory, or failure to ask the specific questions, may* W% f5 B4 v: }- k
result in extensive, unnecessary, and expensive
1 K) }. S$ Z6 d; ~/ hinvestigation. The primary care physician should be
9 l2 W1 a2 w: p3 i8 Saware of this fact, because most of these children
4 d' u4 N6 e1 G1 m0 bmay initially present in their practice. The Physicians’; f) Z' M# O) H% V" D7 D0 ~
Desk Reference and package insert should also put a
! O# ^: W0 b2 X+ V4 X7 U: a# b' x0 Ewarning about the virilizing effect on a male or4 }8 O8 R" o% W- Z8 y% ~: p- N
female child who might come in contact with some-
6 \% Y6 i. N" F6 Done using any of these products.+ c! p n7 J# {& }- C* O
References
1 o; g, ~1 G# E' {+ C: E- h1. Styne DM. The testes: disorder of sexual differentiation, A7 F/ A- a) t
and puberty in the male. In: Sperling MA, ed. Pediatric. ~; h4 g, k1 v
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;! D* `: T, H' H) K* h
2002: 565-628.( C# y G6 E( ^ ^
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
# n$ c0 ]3 `0 {6 M0 P* J" o. x2 n$ Apuberty in children with tumours of the suprasellar pineal
* k8 h& q U) d) V5 y B: \at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
: l% k# }, G8 {" {Topical Testosterone Exposure / Bhowmick et al 543
' f6 n/ S& o, n; ~areas: organic central precocious puberty. Acta Paediatr.
& I# ]6 h: D; C% l2001;90:751-756.
1 B/ Q3 o; D/ c8 w3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.: l. ^- c0 g" W! B7 p: P
Pediatric Endocrinology. 4th ed. New York, NY: Marcel5 v/ s/ U+ Z( C
Dekker Inc; 2003:211-238.
* P4 }. F: \" K- U& o4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual; w8 Z, X. T3 b4 {0 d
development in a two-year-old boy induced by topical% }/ @6 y6 I0 ?. ]9 r
exposure to testosterone. Pediatrics. 1999;104:e23.
- E1 S. E/ f/ ~! f5. Greulich WW, Pyle SI, eds. Radiographic Atlas of0 R8 \5 E+ Q+ s+ l8 Z
Skeletal Development of the Hand and Wrist. 2nd ed.
' y1 r- s3 A P" g4 h" qStanford, CA: Stanford University Press; 1959.
9 _3 ~0 u/ K6 m: n' k' ]. U9 N6. Physicians’ Desk Reference. Androgel 1% testosterone,
2 D* z" f; Y( RUnimed Pharmaceutical Inc. Montvale, NJ: Medical: c- d2 r" t5 ~
Economics Company, Inc; 2004:3239-3241.
8 z% @* L- [$ P; U0 _' ? }: U6 F: v7. Klugo RC, Cerny JC. Response of micropenis to topical* K2 ~. c( o* n* E6 f8 Q
testosterone and gonadotropin. J Urol. 1978;119:
/ d& m& y* I) D% B5 d6 G: F, d667-668.
9 o; w) h/ k- [8. Guthrie RD, Smith DW, Graham CB. Testosterone) w! d! Z, v" M$ t- ?
treatment for micropenis during early childhood. J Pediatr.4 @ V' _' J$ I" K% A
1973;83:247-252.7 l& D7 v, m! _; s; Y
9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone
% k+ ]* V* O) U: w# S% Vtherapy for penile growth. Urol. 1975;6:708-710.9 \% Q& Q1 p: Y1 |8 P, E$ t
10. Husmann DA, Cain MP. Microphallus: eventual phallic
- L1 ]- i$ c' Vsize is dependent on the timing of androgen administra-9 F& Z1 [$ V# O2 l! f7 w: Y
tion. J Urol. 1994;152:734-739.2 z6 z( z& Y5 ]$ r( y, n
11. McMahon DR, Kramer SA, Husmann DA. Micropenis:0 p& F! i* X3 ?
does early treatment with testosterone do more harm+ w* a7 ^: x! F- Q
than good? J Urol. 1995;154:825-829.
+ V4 M' f' ]" K- P; c' \, N, U12. Takane KK, George FW, Wilson JD. Androgen receptor8 C- x( Q) Q: w. k
of rat penis is down-regulated by androgen. Am J Physiol.+ ?0 y% Q$ r# s. a
1990;258:E46-E50.
* Z9 {# f8 C( e& a13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect5 b! W. K" O, F; H
of prepubertal androgen exposure on adult penile
9 H% G7 x( K5 A) ^ I& I, Q: \' }5 ]1 xlength. J Urol. 1996;156:783-787. |
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