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is a significant concern for physicians. Central7 x/ v( @; i S1 Z
precocious puberty (CPP), which is mediated6 X2 L5 w5 Z8 y* @, W% Z
through the hypothalamic pituitary gonadal axis, has" }6 w/ I% d# N& Z
a higher incidence of organic central nervous system1 ]* x5 H( v: b% K3 O
lesions in boys.1,2 Virilization in boys, as manifested( D6 s9 @8 v+ j# D8 v2 U# ]3 ?
by enlargement of the penis, development of pubic: l7 R, L. v6 `1 W( T
hair, and facial acne without enlargement of testi-
, W* H j/ w3 O9 ucles, suggests peripheral or pseudopuberty.1-3 We0 Z( o, L4 }( y" x T/ }5 t
report a 16-month-old boy who presented with the
' A3 W, e$ [: e9 T/ `/ w. l' eenlargement of the phallus and pubic hair develop-; {; Z4 O- v! _6 H% O# m6 {
ment without testicular enlargement, which was due
% M; c9 ^! I# x+ ~3 h" ~! Ato the unintentional exposure to androgen gel used by/ R) V: n! j# ]8 O% S+ Q1 V
the father. The family initially concealed this infor-
4 m C+ q9 h7 dmation, resulting in an extensive work-up for this
, G( N4 O" Z4 r; W% l" ^& hchild. Given the widespread and easy availability of
: n6 {! m7 l1 b4 g4 k) {testosterone gel and cream, we believe this is proba-8 V r7 q( B' A# e1 }/ u& b
bly more common than the rare case report in the
- X; E( K* f; M/ o4 fliterature.4$ A3 y% J) r, I$ G' ~
Patient Report
7 t# z \6 X# Z* w3 N: b ?. [& f. ^A 16-month-old white child was referred to the
3 T2 ^# z. ?7 G0 yendocrine clinic by his pediatrician with the concern
% K1 a- |6 ^ @- x/ ]! `of early sexual development. His mother noticed# O: U, ]4 O' o- s ^8 S+ n
light colored pubic hair development when he was$ J3 j! }. H* ~: V/ Z
From the 1Division of Pediatric Endocrinology, 2University of: U7 F' n. u% m' B
South Alabama Medical Center, Mobile, Alabama.5 R0 |. i" V5 B# t1 G
Address correspondence to: Samar K. Bhowmick, MD, FACE,
) H: x$ T- V, S* u0 Y( dProfessor of Pediatrics, University of South Alabama, College of
' Z( B/ S; S5 iMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;! U& Y$ q, L: Z& `
e-mail: [email protected].
; L- ]) Y2 G! b1 B/ @5 I0 X _) yabout 6 to 7 months old, which progressively became
3 N2 m3 g; W. G5 E5 T- _darker. She was also concerned about the enlarge-
F* \# Q, a9 t. @: t! ]) fment of his penis and frequent erections. The child
# c; F- ?- q% l. Kwas the product of a full-term normal delivery, with* b& k0 `+ k+ { m: k% E$ ]
a birth weight of 7 lb 14 oz, and birth length of8 Q, p; v' O% k% a7 N& i# v
20 inches. He was breast-fed throughout the first year
6 r; L" ]' V& p5 f2 y. t2 \of life and was still receiving breast milk along with4 B& ~/ [* N; L
solid food. He had no hospitalizations or surgery,
! E" K0 n0 \# \- R# U- z% S+ I8 `and his psychosocial and psychomotor development
( z- [8 [5 T3 Q2 z }, Ewas age appropriate.
$ {5 i" [: G5 F9 c% m2 ^The family history was remarkable for the father,8 W5 B! w* ]6 H& U& V, ?& m
who was diagnosed with hypothyroidism at age 16,) z0 I' n6 S: K
which was treated with thyroxine. The father’s$ r; N7 X( n) R; [ V& t
height was 6 feet, and he went through a somewhat* V- @) O1 ^5 O- \ J: a
early puberty and had stopped growing by age 14.6 O. c( W# {: {9 R( |
The father denied taking any other medication. The
+ V: C" u2 D: r, w, Vchild’s mother was in good health. Her menarche5 j# d) k+ k6 x# i1 Y8 r. y! d& @
was at 11 years of age, and her height was at 5 feet S0 {8 V: I6 `9 i! F% H
5 inches. There was no other family history of pre- ]9 D" Z# X( g& S* ^
cocious sexual development in the first-degree rela-6 }/ X9 n# U& N i9 {
tives. There were no siblings.
6 s$ d5 _, p& D/ `1 iPhysical Examination. @2 i5 B$ S P' I( Q7 h, |8 J
The physical examination revealed a very active,7 U1 ~9 e4 E! r: G% Q& d; ], _
playful, and healthy boy. The vital signs documented
9 ^+ d6 t, n5 Y7 b. {* T+ [: t5 Ja blood pressure of 85/50 mm Hg, his length was
, K1 \/ a2 O9 o90 cm (>97th percentile), and his weight was 14.4 kg, w+ ^* H0 ^! F3 K% [
(also >97th percentile). The observed yearly growth
$ l9 ?9 c8 r2 Z7 mvelocity was 30 cm (12 inches). The examination of3 w+ {; w3 i0 _4 W2 T
the neck revealed no thyroid enlargement.! n4 x; e' e2 g6 v* A$ a0 _
The genitourinary examination was remarkable for. D5 V7 w1 W- s7 v1 E% D2 ~
enlargement of the penis, with a stretched length of$ Z2 N' g3 C0 [- M
8 cm and a width of 2 cm. The glans penis was very well0 A7 Z% z1 f9 ~, A
developed. The pubic hair was Tanner II, mostly around
' E0 N% z& \( ~; D- }540' k: m5 z9 i/ ]/ k8 z+ r3 u
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from3 N8 [; ~. x- x- ^
the base of the phallus and was dark and curled. The
6 e5 [) U0 u) G& u& S( otesticular volume was prepubertal at 2 mL each.* k2 u2 W; G, ?
The skin was moist and smooth and somewhat: m' ]" p* K" H* M, c9 b' X! k
oily. No axillary hair was noted. There were no
4 s; V: p: L8 {7 x- P: n7 kabnormal skin pigmentations or café-au-lait spots.9 {5 S! L' P4 Q( O; }2 y
Neurologic evaluation showed deep tendon reflex 2+
& i* R6 u1 k# g2 K( d' [) r/ Abilateral and symmetrical. There was no suggestion
* H# t: }+ e* B' G( X4 a4 Y+ |# wof papilledema.
( t+ Q4 K; o: S" R& l. yLaboratory Evaluation
& {8 c3 Q" V; P9 K2 B: M6 yThe bone age was consistent with 28 months by/ a$ g7 R3 q# B7 @
using the standard of Greulich and Pyle at a chrono-$ m4 ]% T8 W( q# u+ C- G
logic age of 16 months (advanced).5 Chromosomal
! g4 I( G4 j3 v- {: Mkaryotype was 46XY. The thyroid function test, k3 X$ o6 G* ^0 M; Q8 B
showed a free T4 of 1.69 ng/dL, and thyroid stimu-: B# _' q. l. q; T5 N( a& d
lating hormone level was 1.3 µIU/mL (both normal).- y# e" w/ Y8 h% [
The concentrations of serum electrolytes, blood
& _" s# P: M* b( L) k, ?urea nitrogen, creatinine, and calcium all were$ y6 }. T4 @7 T1 ~4 e" V
within normal range for his age. The concentration
& R Q' N" a, u3 m4 q* sof serum 17-hydroxyprogesterone was 16 ng/dL: }5 n: u* y4 ~" @$ q$ s
(normal, 3 to 90 ng/dL), androstenedione was 20
6 s" I! M" P, H7 N$ [ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
* H' c5 I3 J& G3 i! v! qterone was 38 ng/dL (normal, 50 to 760 ng/dL),
/ L* x {/ L# v" C" ?3 i3 H# \desoxycorticosterone was 4.3 ng/dL (normal, 7 to
9 x: t; D9 Q& q' p49ng/dL), 11-desoxycortisol (specific compound S)' x+ v0 S, |3 y1 V
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-1 ?2 l* a! E7 r3 f/ ]9 f6 @
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total8 T8 y/ Q$ E0 T: L: [
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
% W# _) n3 z2 `' L( ]2 qand β-human chorionic gonadotropin was less than
0 H% }- o- Y3 [' T! w8 g3 Z5 mIU/mL (normal <5 mIU/mL). Serum follicular
[1 K+ Y, n" w5 }0 T# Cstimulating hormone and leuteinizing hormone* U& b( r: ~: {4 `
concentrations were less than 0.05 mIU/mL
% Z: h. S+ {- v(prepubertal). t5 K, p3 j# d; h- Q G0 v' @6 M
The parents were notified about the laboratory
@# p3 _0 s9 @, Dresults and were informed that all of the tests were
4 M$ j0 I2 @% W! U5 Tnormal except the testosterone level was high. The3 x1 @4 {2 H9 y6 F/ _4 y/ M. l/ W
follow-up visit was arranged within a few weeks to
2 S$ }6 U% X3 p \2 c! vobtain testicular and abdominal sonograms; how-* O9 v5 r$ M& R4 e8 o
ever, the family did not return for 4 months.- y: q. k a8 G# F. K% ~8 }
Physical examination at this time revealed that the8 D& ^7 f2 ~+ K9 M. j" S
child had grown 2.5 cm in 4 months and had gained
- L, ?2 `3 a6 N+ b' C; a2 kg of weight. Physical examination remained( L, u8 g2 U) i
unchanged. Surprisingly, the pubic hair almost com-
+ i% d7 F+ d1 n" U. J# U# Cpletely disappeared except for a few vellous hairs at
" E$ [/ j5 `" ] j$ [the base of the phallus. Testicular volume was still 2
$ N9 q z6 `% C+ [; BmL, and the size of the penis remained unchanged.
0 W' z1 y, N/ o4 c+ EThe mother also said that the boy was no longer hav-# F+ w7 u0 F5 | e% \
ing frequent erections.+ n' \3 a# g9 k S) Q; T1 k/ Q! C" {
Both parents were again questioned about use of. U6 k. X, T9 h
any ointment/creams that they may have applied to; [: v! w: o9 `! U
the child’s skin. This time the father admitted the7 a \, \% V V. R
Topical Testosterone Exposure / Bhowmick et al 541
- P0 M# G+ I$ s. p: s) f; luse of testosterone gel twice daily that he was apply-! Y/ p3 o" z# d" d: u0 |
ing over his own shoulders, chest, and back area for
, t2 w6 R& T1 _- S* Z3 ~/ E* v7 Ta year. The father also revealed he was embarrassed5 F# r: G6 z( r/ o
to disclose that he was using a testosterone gel pre-: n* T( a2 a( U6 w& Z+ C+ p+ l
scribed by his family physician for decreased libido- d7 R- v* j: T
secondary to depression." e9 s; X$ F, E2 E% S% ^
The child slept in the same bed with parents.
9 A3 j1 e2 z0 s# m( i S- yThe father would hug the baby and hold him on his/ ?1 W5 J4 u0 F. z$ O8 m- Y5 M
chest for a considerable period of time, causing sig-
5 Q# \2 Y4 `. m# B5 `7 tnificant bare skin contact between baby and father.0 D) }# P8 X$ D G
The father also admitted that after the phone call,3 g) ]# U) N: J: g! I1 E7 P3 |
when he learned the testosterone level in the baby
' \6 J& {/ T4 ^4 H( Vwas high, he then read the product information( v5 M" x9 I; O
packet and concluded that it was most likely the rea- f( m$ G$ E# j. @" j: O0 l
son for the child’s virilization. At that time, they
2 g) }2 J; {9 Z8 \6 Hdecided to put the baby in a separate bed, and the: p! i) f' m& c2 Z8 i( W9 H5 N
father was not hugging him with bare skin and had
# I0 B3 Y7 B) [! Gbeen using protective clothing. A repeat testosterone
' g+ x# o$ p8 L; ?# \/ D+ Etest was ordered, but the family did not go to the
+ w5 P- A5 ~+ \+ j& f$ y6 D4 Ylaboratory to obtain the test.
! ]' h; W0 C% u$ l1 ]Discussion
1 G! I2 r& Y$ bPrecocious puberty in boys is defined as secondary2 z! {6 x4 h. I, j: }2 N$ ?
sexual development before 9 years of age.1,4( ^0 ]/ g4 @6 L% q, M0 B
Precocious puberty is termed as central (true) when
4 L$ Q u3 O$ i7 [it is caused by the premature activation of hypo-
1 j- N) X% G8 uthalamic pituitary gonadal axis. CPP is more com-
/ E" h$ _+ W6 u% s7 ~% n8 mmon in girls than in boys.1,3 Most boys with CPP, c5 G5 }9 B2 n; } _# w" c
may have a central nervous system lesion that is! Q2 p& f8 H) y. v
responsible for the early activation of the hypothal-
! x6 Q& g: Z" Damic pituitary gonadal axis.1-3 Thus, greater empha-- G1 G1 D* W# B8 D5 x
sis has been given to neuroradiologic imaging in* h, c C* Y/ S* V8 a" J! C# u
boys with precocious puberty. In addition to viril-5 ^4 s, q8 a5 p2 d$ b. z! m4 B* p
ization, the clinical hallmark of CPP is the symmet-
3 ]. I2 [' @& B4 l* xrical testicular growth secondary to stimulation by
. b& b3 M+ l4 Y K. Q& xgonadotropins.1,3
- B, Z2 T2 K, z" S! A$ MGonadotropin-independent peripheral preco-$ ~; ?; U) V) }: P m3 H* r
cious puberty in boys also results from inappropriate5 a6 ^# l I4 ?1 e; I
androgenic stimulation from either endogenous or
0 o; w m4 f/ g% ^. {exogenous sources, nonpituitary gonadotropin stim-4 K! z$ p J- Q# k# k. ?
ulation, and rare activating mutations.3 Virilizing
* D o3 c, P! v2 L* R% y% ucongenital adrenal hyperplasia producing excessive( q2 P. ^9 [% O2 P2 f* L, B5 l
adrenal androgens is a common cause of precocious7 C) {+ ~; c! ?. U* {: @
puberty in boys.3,4
+ F+ H- e6 j5 ]0 V7 Q1 ^The most common form of congenital adrenal
% \; c( ?) j2 J* ] k; P' h9 Lhyperplasia is the 21-hydroxylase enzyme deficiency.
x' K" T. j: X9 ]! K4 SThe 11-β hydroxylase deficiency may also result in1 _$ k% }! n+ K2 {! L
excessive adrenal androgen production, and rarely,* _1 f* F; W n! n/ `% s& q4 a$ [
an adrenal tumor may also cause adrenal androgen
. p' `( V) ^' \+ J/ ?& Aexcess.1,3
% F" w. X! Y- ~) Uat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
. L8 e" G5 V( c* N- Q% G542 Clinical Pediatrics / Vol. 46, No. 6, July 2007! J5 ]9 P3 W3 S: y' ?" o& W9 H9 W
A unique entity of male-limited gonadotropin-
1 Q5 w. b+ e: m$ W7 Dindependent precocious puberty, which is also known. ^2 o0 V/ w# I: F- b- r( @
as testotoxicosis, may cause precocious puberty at a% M! C! r- K; v2 B. s4 @
very young age. The physical findings in these boys
/ ? x! Z0 a7 K" `: c% gwith this disorder are full pubertal development,' K8 H1 d p7 @! m x1 ^! w
including bilateral testicular growth, similar to boys* Q( E. V* P* R' X2 R9 ^, r
with CPP. The gonadotropin levels in this disorder# y: z S) w! @$ v0 s
are suppressed to prepubertal levels and do not show
u5 k" z, a' J9 f1 F2 d1 xpubertal response of gonadotropin after gonadotropin-+ T# Q$ ], ^+ n" Z4 v
releasing hormone stimulation. This is a sex-linked
+ }/ G: Z4 V! Mautosomal dominant disorder that affects only4 f% g0 V9 y+ v- V9 }5 _0 i3 u
males; therefore, other male members of the family1 J# b) K, W8 a+ t
may have similar precocious puberty.3
( Y6 A9 y( r$ F# YIn our patient, physical examination was incon-
; w4 I t4 S% S+ g9 C, M s# Bsistent with true precocious puberty since his testi-
( E5 p$ v& q% D5 i8 a( Gcles were prepubertal in size. However, testotoxicosis4 j5 C9 O- y2 E8 y2 o2 _, G$ G
was in the differential diagnosis because his father
, I) L2 [; }7 P: U2 d2 R: } jstarted puberty somewhat early, and occasionally,* _3 X0 \0 ^ z' i% l. h& V! ?
testicular enlargement is not that evident in the$ @. N7 X* ]1 ^ q
beginning of this process.1 In the absence of a neg-
+ r3 s+ c: K: j$ a3 Q8 |ative initial history of androgen exposure, our
8 o& w4 T( p5 r0 Bbiggest concern was virilizing adrenal hyperplasia,0 k; ]# b( v# w0 W! ^
either 21-hydroxylase deficiency or 11-β hydroxylase
1 K8 @( t: H% g& s% Z* T) p: rdeficiency. Those diagnoses were excluded by find-
3 a" p/ o0 S* Q' v7 a: I: ^9 R5 Uing the normal level of adrenal steroids." y5 m0 N& N" b0 Y$ \1 S
The diagnosis of exogenous androgens was strongly
7 m; D1 q, Q4 X7 ~- Asuspected in a follow-up visit after 4 months because
! I4 X" x" K) X2 `* k j, Xthe physical examination revealed the complete disap-$ C; @) Z- h9 A. t
pearance of pubic hair, normal growth velocity, and
5 K* g: u. f4 Y& ~decreased erections. The father admitted using a testos-
( P$ {3 m( g; n8 r1 o; S( cterone gel, which he concealed at first visit. He was
% [( |# J; w( [( dusing it rather frequently, twice a day. The Physicians’
0 o. L8 M% S! r0 S7 E9 EDesk Reference, or package insert of this product, gel or& e$ r! A7 ^8 r4 h8 B1 q* [; w3 k
cream, cautions about dermal testosterone transfer to+ ^0 U; W) }6 U9 q, i. i3 f' U. L8 v& d
unprotected females through direct skin exposure.# E! b+ ~! ?6 Y4 u
Serum testosterone level was found to be 2 times the0 g `2 h" v+ S% B
baseline value in those females who were exposed to5 Z7 L$ n2 O! k& ?: w0 x
even 15 minutes of direct skin contact with their male
2 S: y4 ^3 @# j* s7 {partners.6 However, when a shirt covered the applica-6 v9 Z9 ?9 j( l; X4 N
tion site, this testosterone transfer was prevented.
! ]+ Z4 ~' z+ _- `: P/ D( eOur patient’s testosterone level was 60 ng/mL,
( ~) o3 N0 C. Kwhich was clearly high. Some studies suggest that
: a+ x) V7 {3 P8 _' Edermal conversion of testosterone to dihydrotestos-
) [- [3 N% N0 U# Mterone, which is a more potent metabolite, is more
: _: x5 q9 r4 h5 J t+ v+ w6 ?active in young children exposed to testosterone' O# z7 E9 K" J. S/ Y( a5 P: t6 l4 ]3 n
exogenously7; however, we did not measure a dihy-
; h" t" i/ }! t$ R" n) mdrotestosterone level in our patient. In addition to
) |* b' d$ k4 X% d5 ]) {) Uvirilization, exposure to exogenous testosterone in, V" ]5 F, [# h& G5 q- i2 w3 G$ s
children results in an increase in growth velocity and7 C3 Z9 V6 f" ?0 T7 j& x
advanced bone age, as seen in our patient.1 \" ^3 l6 J9 L* k+ }
The long-term effect of androgen exposure during" n. J `7 F$ }, G2 R
early childhood on pubertal development and final
# O1 A0 {! B c; l- T0 @adult height are not fully known and always remain2 n9 h/ W( I4 A; [3 N, {) m- B
a concern. Children treated with short-term testos-
( G0 W/ o+ _/ y; ]terone injection or topical androgen may exhibit some8 L; c+ U7 `! n4 {. `7 c4 K8 K& k
acceleration of the skeletal maturation; however, after
& A# I3 w; T1 G" f0 V+ W0 N; f' ]cessation of treatment, the rate of bone maturation
* R8 t8 }1 u1 S7 W& k. Y" hdecelerates and gradually returns to normal.8,96 f5 r9 L+ t+ [! P( U b
There are conflicting reports and controversy
: ?7 s7 J% L6 F4 ?3 ? \2 f* _over the effect of early androgen exposure on adult, q5 Y6 m5 K. }, s1 F* e
penile length.10,11 Some reports suggest subnormal& A' o' Z! E/ \
adult penile length, apparently because of downreg-
' ]) [. C# I/ `( Mulation of androgen receptor number.10,12 However,2 I. A* {" z* q# f& N
Sutherland et al13 did not find a correlation between
6 @$ I8 Z6 k( U4 g, pchildhood testosterone exposure and reduced adult
8 g" H1 A. K5 Q! q) d/ v0 n/ xpenile length in clinical studies.) M* L1 G0 ?7 m2 @& M7 Z/ m- e
Nonetheless, we do not believe our patient is
9 Z4 `; x8 E8 q5 q2 `going to experience any of the untoward effects from: \3 r0 S4 \/ n
testosterone exposure as mentioned earlier because6 ?$ X2 ^9 I% \+ q$ _; p; H Y& M7 e
the exposure was not for a prolonged period of time.) _7 m5 n% H1 q5 ?% u- M, O/ o9 t
Although the bone age was advanced at the time of
7 [3 O5 B+ W+ b- v1 H6 F$ s& v; I- t- ]: qdiagnosis, the child had a normal growth velocity at+ O9 I9 Y$ D$ [) l
the follow-up visit. It is hoped that his final adult0 A7 Q6 E% g5 [
height will not be affected.
$ J/ h: c1 @& c# ~9 B- w c# FAlthough rarely reported, the widespread avail-7 t/ R9 V6 @" M1 C0 o
ability of androgen products in our society may
/ A. E, B! q( l5 S/ t5 a7 w2 Dindeed cause more virilization in male or female+ W3 a. w' z# U$ I! M8 {
children than one would realize. Exposure to andro-
. ^3 h) M/ q) B9 zgen products must be considered and specific ques-- O& T2 E5 ^: b
tioning about the use of a testosterone product or. k" P7 [# V! |( J& s
gel should be asked of the family members during. _; K! A% T/ P( R" v1 x
the evaluation of any children who present with vir-" q ^ ?, ^1 G# W
ilization or peripheral precocious puberty. The diag-/ k u; C, N# d$ l) K# B" K
nosis can be established by just a few tests and by8 ]; M) N: C/ @. b
appropriate history. The inability to obtain such a
8 a. O6 }5 C A0 d9 n+ J. ihistory, or failure to ask the specific questions, may3 d4 y9 d- ]! Q4 L1 m
result in extensive, unnecessary, and expensive
* o# F4 ?& W) a( y8 _$ f' H. j4 Finvestigation. The primary care physician should be) r, Y9 s4 l- Y% s0 z2 @
aware of this fact, because most of these children' x! d1 `/ g9 f8 l) Q7 ^
may initially present in their practice. The Physicians’
& H0 m) ?) g- I4 P; gDesk Reference and package insert should also put a) y+ g* z4 j+ S+ S- N% r) U" W
warning about the virilizing effect on a male or: p& c: f: M$ z* |/ @* D% }! p
female child who might come in contact with some-- [1 f% A4 \1 d- A# a6 _6 q
one using any of these products.
# |* T4 D5 m- b! `References
- }" {' L9 @- e- M1. Styne DM. The testes: disorder of sexual differentiation k7 I2 T9 i; B# x1 O9 x
and puberty in the male. In: Sperling MA, ed. Pediatric
) M0 }& a3 |; M4 g; Y! QEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
. P) B u+ l) r5 o R2002: 565-628.5 N& J! B& k% d+ V9 t3 P
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious. _# T+ R" r& t4 W% Q
puberty in children with tumours of the suprasellar pineal
7 ^" K' b. F3 \( yat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
; @; D, ?0 z& O: K& GTopical Testosterone Exposure / Bhowmick et al 543
" ^5 p' A" ]9 Q; B. A- D5 }$ @areas: organic central precocious puberty. Acta Paediatr.
) O, f, E( p' I& R) [# U2001;90:751-756.% q- G- M1 g2 n9 g
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed. S/ Z1 \9 [8 Q' d& W
Pediatric Endocrinology. 4th ed. New York, NY: Marcel
" _$ l$ \- Z& R$ H( BDekker Inc; 2003:211-238.) P g5 J& h* v8 o t+ w' Q2 v P
4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
0 |' _* h9 [2 ~: ndevelopment in a two-year-old boy induced by topical5 _; I6 r4 v) T( R; [, c) W
exposure to testosterone. Pediatrics. 1999;104:e23.
3 g* L+ q: h3 m9 i/ i9 l5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
. _0 r3 p+ a1 c9 ]8 L- ^Skeletal Development of the Hand and Wrist. 2nd ed., c' i% o) `, c
Stanford, CA: Stanford University Press; 1959., B% S- w4 ^) D# w k7 u
6. Physicians’ Desk Reference. Androgel 1% testosterone,: |4 F8 X' \! }) t
Unimed Pharmaceutical Inc. Montvale, NJ: Medical
8 _& L* X6 e6 LEconomics Company, Inc; 2004:3239-3241.
% K, H! X* m$ f, [# ]9 W7. Klugo RC, Cerny JC. Response of micropenis to topical
( e* h+ i7 ?9 Ltestosterone and gonadotropin. J Urol. 1978;119:
9 s; i/ b* o' ^8 c+ |, n667-668.
! Q+ d$ E0 i; ^9 P( `0 B8. Guthrie RD, Smith DW, Graham CB. Testosterone
" Y: u5 Z) E+ v0 l; Ptreatment for micropenis during early childhood. J Pediatr.) b7 A7 K7 y' |. l" U* z C) h0 R
1973;83:247-252.
3 r6 {% s7 N/ G: r6 d$ G: q9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone) Y C U+ a; ^* A& }
therapy for penile growth. Urol. 1975;6:708-710.
5 }# a j# g7 [1 [. o10. Husmann DA, Cain MP. Microphallus: eventual phallic0 [% m* Y: k, \9 u Q0 W
size is dependent on the timing of androgen administra-
5 b3 S) b$ z+ @1 N0 e* T8 M, V. Dtion. J Urol. 1994;152:734-739.8 y1 W% m2 l8 B$ A" p5 q
11. McMahon DR, Kramer SA, Husmann DA. Micropenis:
/ M: v, P! w; X2 l. |: kdoes early treatment with testosterone do more harm
3 r% C* i5 i6 n; C' ?than good? J Urol. 1995;154:825-829.4 m4 @; P7 B* x! M# e+ Z" R
12. Takane KK, George FW, Wilson JD. Androgen receptor* @6 b; T9 Q% `5 {0 F
of rat penis is down-regulated by androgen. Am J Physiol.$ f! x* _2 X0 E% R. a
1990;258:E46-E50.+ e& \9 q9 t1 I" M+ ^- h" l
13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect+ C% M0 A: }+ B) L. T
of prepubertal androgen exposure on adult penile( ^, o& U1 i2 J9 K" ?
length. J Urol. 1996;156:783-787. |
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