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is a significant concern for physicians. Central
% P- W( A0 s% A5 q+ P1 v4 Xprecocious puberty (CPP), which is mediated
0 T9 j# I! b2 T2 m0 H& rthrough the hypothalamic pituitary gonadal axis, has
! f8 T, G' |% ]2 Sa higher incidence of organic central nervous system
1 a Y9 {" Q9 B$ |7 I. q$ \9 \" ]5 l3 blesions in boys.1,2 Virilization in boys, as manifested* v. t, l/ v% F) F) n
by enlargement of the penis, development of pubic0 J% u/ H6 h1 A5 a2 n
hair, and facial acne without enlargement of testi-
( M! J! `, D, y" ~2 [4 k7 ^- n# Xcles, suggests peripheral or pseudopuberty.1-3 We
( B* e% }4 L8 e+ U* ~& v/ P _report a 16-month-old boy who presented with the& D& `- T# j3 y5 j; l" n' R6 v
enlargement of the phallus and pubic hair develop-% P1 C" M" H- |8 Q, L2 W6 t8 a+ X
ment without testicular enlargement, which was due
% \/ H' J1 y4 J3 a. ~) Eto the unintentional exposure to androgen gel used by3 H( {2 s" S7 o( f
the father. The family initially concealed this infor-
5 v1 t* U; r" `* m9 Z! c' r; _* I) vmation, resulting in an extensive work-up for this0 k( o" W" o' v5 @) \& I0 p
child. Given the widespread and easy availability of5 d/ ~5 P. H8 x7 `/ ]
testosterone gel and cream, we believe this is proba-
6 R$ Q, v3 p: W" l3 `8 Sbly more common than the rare case report in the
$ P2 D8 c- o& o' Bliterature.4
, O B( y* K7 W- y0 w7 A. LPatient Report4 S! K5 L" C2 d& x1 {: k: V9 Y
A 16-month-old white child was referred to the/ i8 h2 H# @$ o* ~
endocrine clinic by his pediatrician with the concern" l6 {" X8 K1 B* s% d
of early sexual development. His mother noticed& C* A: b% X7 r4 j9 Q7 H X
light colored pubic hair development when he was& ]2 L) J! \1 y: J- c. G- E+ t
From the 1Division of Pediatric Endocrinology, 2University of
/ Z( `$ @9 d' {! k0 dSouth Alabama Medical Center, Mobile, Alabama.9 y- \- k9 z) r/ W8 J* p
Address correspondence to: Samar K. Bhowmick, MD, FACE,
* q8 B& e+ [2 I- }0 ]4 y) XProfessor of Pediatrics, University of South Alabama, College of
) V# v& d$ r6 q! W) G' }, NMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
2 K! @* r0 }: j$ o5 Xe-mail: [email protected].; q' J8 ~* l0 ^7 V
about 6 to 7 months old, which progressively became
! e& V7 r* Q+ y" m! hdarker. She was also concerned about the enlarge-
; I# j. \- E% P- V! iment of his penis and frequent erections. The child
5 o# |/ r0 Y; j/ Pwas the product of a full-term normal delivery, with
# H" v y" n* n+ J3 t! e* H) S. a' _a birth weight of 7 lb 14 oz, and birth length of0 m+ |3 {* K0 L" D3 Y
20 inches. He was breast-fed throughout the first year
% b. Q% ?- e. `3 o `/ bof life and was still receiving breast milk along with
" E, a4 \* ]9 q1 D- i- D, R$ fsolid food. He had no hospitalizations or surgery, l& @; t( O+ h. b* \6 ^; ]
and his psychosocial and psychomotor development' i, [7 \/ X, V K
was age appropriate.. e1 q" y R" x( C0 j0 u s6 p. V
The family history was remarkable for the father,3 m& p) Q" V# E8 X
who was diagnosed with hypothyroidism at age 16,, p0 O o- K' ?, R$ E3 r
which was treated with thyroxine. The father’s
; H: o* L. I! Gheight was 6 feet, and he went through a somewhat
# R( k$ B6 P: d0 L+ o Fearly puberty and had stopped growing by age 14.6 u1 I& u0 |3 H
The father denied taking any other medication. The
. q' m5 _: Z* m8 |: achild’s mother was in good health. Her menarche/ i$ ?8 [- W7 T. n& ~9 ~
was at 11 years of age, and her height was at 5 feet
t p2 p# E# X$ i1 a1 Q/ l/ c% J5 inches. There was no other family history of pre-
3 a' H' y( W* r9 p2 Mcocious sexual development in the first-degree rela-- C; J- w' N7 a. @2 h9 _
tives. There were no siblings.. W+ M) L! s1 v6 _' L" H6 ~
Physical Examination$ }. U, t% ~6 T
The physical examination revealed a very active,
$ Z, E" B: w. h2 |playful, and healthy boy. The vital signs documented
/ o& w# S( N( l: L* @- ea blood pressure of 85/50 mm Hg, his length was
0 Z$ D! T- K) [+ r) b90 cm (>97th percentile), and his weight was 14.4 kg8 Q6 f. h9 o# i& x( f# L
(also >97th percentile). The observed yearly growth; V4 ]/ u6 r$ C* w2 t
velocity was 30 cm (12 inches). The examination of3 V: ^$ A$ ?; E8 ~3 D- j8 a
the neck revealed no thyroid enlargement.% ? u* y, D. \; u. @, }
The genitourinary examination was remarkable for; v# s# ?5 r- r
enlargement of the penis, with a stretched length of0 ?- j8 A* @" H2 X1 D& i( f8 H! C
8 cm and a width of 2 cm. The glans penis was very well5 o0 `% H8 E8 ~/ P" Y: g- L$ w+ _
developed. The pubic hair was Tanner II, mostly around
& b. |, T( D& C0 b4 p7 O/ j540
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the base of the phallus and was dark and curled. The
9 r! t( M0 e0 T- B2 t7 D/ @testicular volume was prepubertal at 2 mL each.
/ E) f9 S- [" i9 ?1 q. D8 gThe skin was moist and smooth and somewhat" u% w. I( [5 G( e4 }9 v) k
oily. No axillary hair was noted. There were no+ ~" Q4 c* F4 j% t3 X) H( m
abnormal skin pigmentations or café-au-lait spots.& Q* Q. S2 B9 P
Neurologic evaluation showed deep tendon reflex 2+
6 L2 @6 I0 _4 `' t# nbilateral and symmetrical. There was no suggestion5 c# ~+ q9 c5 I* J* v0 c- j4 C/ J9 F* y
of papilledema. w$ D9 c; E5 v* i. u+ N" ~
Laboratory Evaluation# o0 m: V) k$ V! M/ k, H8 f
The bone age was consistent with 28 months by9 L" C1 C8 d z) S
using the standard of Greulich and Pyle at a chrono-) s! Y" ^3 b4 F# K$ |8 V
logic age of 16 months (advanced).5 Chromosomal: ~# O+ ^2 ^4 Y- A0 ?4 G) W. Q
karyotype was 46XY. The thyroid function test
2 \: w& c. Z8 B6 Nshowed a free T4 of 1.69 ng/dL, and thyroid stimu-1 f. ^: W1 ~5 Q! l# y
lating hormone level was 1.3 µIU/mL (both normal).
8 @* {6 @- }# }) q: L- S7 m+ dThe concentrations of serum electrolytes, blood
' o5 p: C P" Q7 G$ L. k* k9 o4 Durea nitrogen, creatinine, and calcium all were
* j# z* s- S* r% J6 s& J1 `within normal range for his age. The concentration; _( f- B. }/ G( {
of serum 17-hydroxyprogesterone was 16 ng/dL
6 Q- K5 W1 O+ S9 K! R(normal, 3 to 90 ng/dL), androstenedione was 20( ]2 Y! e! Y4 N* o8 f; R* `9 W9 `7 ]
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-7 V1 i5 ^6 X# o H* f7 ~6 r
terone was 38 ng/dL (normal, 50 to 760 ng/dL),
; z6 V0 C* _% }% `desoxycorticosterone was 4.3 ng/dL (normal, 7 to7 \$ K( ?4 `, k$ f( a c5 b
49ng/dL), 11-desoxycortisol (specific compound S)
7 ?( Z* B5 p8 T, O7 _ \/ ^: Bwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-0 W3 E7 S8 `( Z' ~6 r1 i
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total5 o( j/ t, {2 u& n4 T4 u
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
8 R- e3 Y% V. E5 ?5 Kand β-human chorionic gonadotropin was less than
6 K0 |/ o7 i* k5 mIU/mL (normal <5 mIU/mL). Serum follicular
" S/ G% b2 O. s- t" Y9 \- gstimulating hormone and leuteinizing hormone
4 \5 |2 s. Y& g9 e4 Uconcentrations were less than 0.05 mIU/mL
$ [+ u2 ^( O! [6 T" e(prepubertal).
" J* j2 k. W% s4 [The parents were notified about the laboratory
+ q3 y( f' `, {! H( ]6 l _results and were informed that all of the tests were5 h n8 R) `# W* N# h3 x% M
normal except the testosterone level was high. The
* T2 M7 i0 q$ m0 O# t/ |follow-up visit was arranged within a few weeks to
# f1 r, A. ^' W/ G$ E% P$ f: e% w" ^obtain testicular and abdominal sonograms; how-
) u& w9 W8 m& x2 h( a" gever, the family did not return for 4 months.
8 ?( f( f3 _. m4 y* vPhysical examination at this time revealed that the% [: _, }0 K; B2 h
child had grown 2.5 cm in 4 months and had gained
. U% f; C! L7 @+ t2 kg of weight. Physical examination remained0 F; a2 Y) }5 s
unchanged. Surprisingly, the pubic hair almost com-
/ L8 y9 k9 j7 Z8 P: r$ Vpletely disappeared except for a few vellous hairs at
3 h: f" D4 ^* ?! |0 L6 |the base of the phallus. Testicular volume was still 2
4 b7 p. Z+ \" d* XmL, and the size of the penis remained unchanged.
1 Z( l: E/ X% s; w8 c. d2 H) P# ? FThe mother also said that the boy was no longer hav-% C) [ N) h6 ~7 T4 Q) ?
ing frequent erections./ m, b* d1 k! R( P: D0 g, J8 G
Both parents were again questioned about use of& s" ]* B. F+ A! W5 {; Y
any ointment/creams that they may have applied to, b! D) b3 T+ W/ m/ c$ \# X
the child’s skin. This time the father admitted the) _1 a' @9 h d
Topical Testosterone Exposure / Bhowmick et al 541" ~4 i( Z' V7 L9 Y0 @4 t
use of testosterone gel twice daily that he was apply-, V/ K) [2 u; t. [9 P
ing over his own shoulders, chest, and back area for4 r4 G# g6 N- [# h/ }
a year. The father also revealed he was embarrassed
" F: J3 }0 J0 ~ i6 w5 ato disclose that he was using a testosterone gel pre-/ b" l& W# b% u- m7 ^7 e( a
scribed by his family physician for decreased libido( l# M$ Q7 r, N; G/ t7 x7 N6 H/ W" A; A
secondary to depression.
) U+ w0 Q: ]/ \9 v* o, q" mThe child slept in the same bed with parents.
3 |$ z) w) J* i# @* Y! d+ P F$ GThe father would hug the baby and hold him on his" ?6 g- s& o; i3 l2 S$ I* c
chest for a considerable period of time, causing sig-( `( X% S2 {% i4 e V5 H2 s
nificant bare skin contact between baby and father.. }. q. l/ m2 y- Z/ H' B' Z
The father also admitted that after the phone call,
6 S& V+ f @# I# @) P$ kwhen he learned the testosterone level in the baby
+ A" v9 h" }7 P* }( \, zwas high, he then read the product information, ?2 t' r$ x' |7 A; E0 k) P8 q
packet and concluded that it was most likely the rea-
& _; B- [; p: ^4 g6 fson for the child’s virilization. At that time, they
3 B: c5 @( f/ h( n8 y" Q4 |decided to put the baby in a separate bed, and the
5 D0 r! w, ?: ]4 L& b' B Dfather was not hugging him with bare skin and had" k' t3 L9 U6 \5 t
been using protective clothing. A repeat testosterone
* V. k7 Z8 ]: k' W% Ptest was ordered, but the family did not go to the2 M9 Y' m4 i% y/ s
laboratory to obtain the test.
" O8 \+ g8 O. ~! t$ S; lDiscussion" t( c4 \2 f$ @# n! z
Precocious puberty in boys is defined as secondary' I4 j" _1 ]4 b7 ~' K
sexual development before 9 years of age.1,41 x- r: y( [1 a0 q7 e3 J' U/ [ V
Precocious puberty is termed as central (true) when
6 H8 V0 z5 m i6 M3 dit is caused by the premature activation of hypo-
4 ]# O: r8 k9 vthalamic pituitary gonadal axis. CPP is more com- c: ^7 X9 `. {
mon in girls than in boys.1,3 Most boys with CPP
, y9 }/ ~' g3 j1 q4 l9 G$ Z4 B" ]may have a central nervous system lesion that is7 a, Q8 n3 v# @+ ]
responsible for the early activation of the hypothal-
6 I' l( ]: B7 tamic pituitary gonadal axis.1-3 Thus, greater empha-
$ q: F5 f) R4 g9 k1 m+ fsis has been given to neuroradiologic imaging in$ Q, J" v$ f0 l
boys with precocious puberty. In addition to viril-4 ~5 W+ Q5 N2 h& Q
ization, the clinical hallmark of CPP is the symmet-3 ~6 g( [, Y# x4 ^7 i/ j+ E
rical testicular growth secondary to stimulation by
* J7 P: o2 b& Agonadotropins.1,3, m" x" [+ i6 `
Gonadotropin-independent peripheral preco-
% ^6 N" _$ B: K9 p6 `8 `2 u" f7 Scious puberty in boys also results from inappropriate. u2 u9 |( ^. W% J9 R2 N; t
androgenic stimulation from either endogenous or* `. P( o& E# _% a( T) Q3 Y& I
exogenous sources, nonpituitary gonadotropin stim-
6 {& h% {/ h' kulation, and rare activating mutations.3 Virilizing
* s. E$ {/ i) o0 @congenital adrenal hyperplasia producing excessive
0 o2 f1 g3 W" g/ k, yadrenal androgens is a common cause of precocious
7 |: `7 E2 y, cpuberty in boys.3,4
( V7 f) H( T2 S$ w: w; j4 EThe most common form of congenital adrenal8 q, d8 |; m4 Q0 [. s* A% f7 C
hyperplasia is the 21-hydroxylase enzyme deficiency.
, i9 g8 I# ?9 n: q xThe 11-β hydroxylase deficiency may also result in' `6 c' F8 g, X& e! z# _
excessive adrenal androgen production, and rarely,) }" ~6 V' V" T5 F
an adrenal tumor may also cause adrenal androgen
. f* z9 n3 \; f1 x8 B( V! j+ }excess.1,3
7 V8 d" w }5 |1 y! ?0 e& Tat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from5 b9 ? s0 N. t% }8 Z. S" g2 L1 B: B
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007) K5 `; W7 \1 f6 B W! Y
A unique entity of male-limited gonadotropin-
9 I4 V4 h; T; U' }- dindependent precocious puberty, which is also known [( R& G& I: h- E8 x/ ^1 O) H
as testotoxicosis, may cause precocious puberty at a: g, {) h- d+ c, b
very young age. The physical findings in these boys
; _4 S$ {/ P: ]0 H( D1 c* `with this disorder are full pubertal development, k2 S3 `' P* f# \+ ^/ E
including bilateral testicular growth, similar to boys6 V; A. b7 y5 d+ e. n2 E* F6 x
with CPP. The gonadotropin levels in this disorder, {$ P5 u: i* }; B/ p+ s( E9 D' j
are suppressed to prepubertal levels and do not show! ], _" p/ z$ R7 \$ | F
pubertal response of gonadotropin after gonadotropin-
/ D, U- a0 C1 N2 D4 Q8 i8 Z+ J# D- {releasing hormone stimulation. This is a sex-linked
1 P; g. H3 n* D* n2 [3 Oautosomal dominant disorder that affects only
/ _# x3 h* Q/ o/ dmales; therefore, other male members of the family
% s2 P. w4 h, Y! D# Jmay have similar precocious puberty.3$ B1 o/ s! {. I/ M3 ?3 {) \1 @0 v: ^8 e
In our patient, physical examination was incon-
3 \. |5 z P; z$ w4 t! `sistent with true precocious puberty since his testi-
2 Z+ h- b/ T7 K/ L, \8 v! Bcles were prepubertal in size. However, testotoxicosis8 C6 | g: D; O# @/ j3 k" h
was in the differential diagnosis because his father" s1 n! G3 ~. V1 k) w8 }4 D; ?
started puberty somewhat early, and occasionally,
% r5 }' |; k' J. _, a9 b+ Y$ ?testicular enlargement is not that evident in the
" L% S2 ]8 M$ ?8 m8 q. @beginning of this process.1 In the absence of a neg-
) F- S' G( a Y4 U7 Mative initial history of androgen exposure, our* \9 `# u9 I& m% C
biggest concern was virilizing adrenal hyperplasia,
* y& _. M: V$ b2 z6 seither 21-hydroxylase deficiency or 11-β hydroxylase A9 v* F4 r$ R, x$ @. Y
deficiency. Those diagnoses were excluded by find-
+ Y1 r" \; e' e' Cing the normal level of adrenal steroids.
9 r5 z6 B- p, D* m4 gThe diagnosis of exogenous androgens was strongly7 R) T6 {4 O0 z# f: U: L
suspected in a follow-up visit after 4 months because* c( Q- i( \& r; G G3 X9 R/ b
the physical examination revealed the complete disap-7 O6 L* Y- g6 v6 b" x; M8 t) e' T/ w
pearance of pubic hair, normal growth velocity, and( m2 r8 a2 R# g0 x1 N
decreased erections. The father admitted using a testos-" p7 l, O4 I) s. p% t" O
terone gel, which he concealed at first visit. He was' `3 I8 m9 g# K7 |- V
using it rather frequently, twice a day. The Physicians’; [7 F! f6 b# n3 w, ~! s$ u
Desk Reference, or package insert of this product, gel or8 K8 T3 {- |! L7 b, F4 j1 k3 y; L
cream, cautions about dermal testosterone transfer to( W& J% W$ C5 z) t
unprotected females through direct skin exposure.
. y$ O1 x; g" K$ x8 E8 ]Serum testosterone level was found to be 2 times the( K: X- ?. S' H6 {
baseline value in those females who were exposed to
! {+ b. R/ W$ J8 ceven 15 minutes of direct skin contact with their male
2 f: a% ^, w0 p! f. T& Epartners.6 However, when a shirt covered the applica-
, ~. H" p. P' e1 V8 Ption site, this testosterone transfer was prevented./ J2 y8 m! H. E+ A4 W
Our patient’s testosterone level was 60 ng/mL,3 h/ x# C, y, f1 V& @* d5 Q
which was clearly high. Some studies suggest that+ G' w1 a' i9 h0 l* n$ ]
dermal conversion of testosterone to dihydrotestos-
6 n/ h+ D/ w* P& D8 e: s, M2 Z3 Rterone, which is a more potent metabolite, is more3 M# U- F: ^* J/ P0 Y
active in young children exposed to testosterone1 ]5 G6 G# G; e2 w
exogenously7; however, we did not measure a dihy-
; p# o( M/ Y$ t9 ?drotestosterone level in our patient. In addition to
+ m+ q2 F0 H1 h" Xvirilization, exposure to exogenous testosterone in+ \7 m. r$ W6 F
children results in an increase in growth velocity and
% b/ p, L1 k8 s+ yadvanced bone age, as seen in our patient.
! K0 p, \+ g O* N1 cThe long-term effect of androgen exposure during& D2 H5 F! A {& N
early childhood on pubertal development and final
+ L7 w- i" ^6 F4 Ladult height are not fully known and always remain% b( p6 S. @4 B' m
a concern. Children treated with short-term testos-
* |) J# ]6 H7 u2 y. ]% |terone injection or topical androgen may exhibit some1 K0 n: i- p! w2 H+ H
acceleration of the skeletal maturation; however, after
; p G; v% q( B+ |. J4 y) k3 h) [cessation of treatment, the rate of bone maturation3 l* b2 d$ ~) }& h& T2 @8 {6 d& ~
decelerates and gradually returns to normal.8,9
; R, ~' \5 v4 s3 {There are conflicting reports and controversy, O* L* r: m8 T. U7 Z
over the effect of early androgen exposure on adult) J" V2 ` {4 G8 S3 a3 W/ u
penile length.10,11 Some reports suggest subnormal o* T1 ~8 f* P7 ~& Y4 @
adult penile length, apparently because of downreg-
0 Q7 B* E+ g+ U8 n( t' N: _ulation of androgen receptor number.10,12 However,
/ a' H( h7 ~ W8 ^Sutherland et al13 did not find a correlation between9 ^- f* n' q+ a+ `0 Q I
childhood testosterone exposure and reduced adult
, R5 ~9 g, E( r' l- D- W0 a# j# Ypenile length in clinical studies.! ?/ l/ ]* o- E7 A( X
Nonetheless, we do not believe our patient is
2 \7 Z& m! L' Ggoing to experience any of the untoward effects from0 I N2 d8 C/ l# N9 }6 H
testosterone exposure as mentioned earlier because- u. t3 Q3 I. j2 ^1 r
the exposure was not for a prolonged period of time.
$ z' P9 E n4 S3 c; I2 Q+ [ q& C% jAlthough the bone age was advanced at the time of8 [3 M# Z4 M. O0 Z# Z
diagnosis, the child had a normal growth velocity at% b) d$ V* c6 Z* p$ i: }& W
the follow-up visit. It is hoped that his final adult
J$ [/ |$ S I: Theight will not be affected.* [! }6 O# M, [% [$ F
Although rarely reported, the widespread avail-& G7 `8 M( W6 W4 U8 `: U4 }: s' i
ability of androgen products in our society may5 b E3 C ~; k2 ^- h" q! C! x
indeed cause more virilization in male or female
4 O7 J' ~+ h x# ichildren than one would realize. Exposure to andro-
7 |" d) z- X, D3 B) \( Tgen products must be considered and specific ques-% G& L" s7 r: ?
tioning about the use of a testosterone product or8 {. _1 x# L& [2 ]- J$ x
gel should be asked of the family members during$ A8 [& V" [: R: z( }- g# ^1 ?
the evaluation of any children who present with vir-0 a' V4 N" j' e9 g. S3 W) A: m9 [
ilization or peripheral precocious puberty. The diag-
- L5 E+ D* i% p; B Dnosis can be established by just a few tests and by; U, ] l l5 y- D/ u+ N
appropriate history. The inability to obtain such a
0 |* k( K) ~8 phistory, or failure to ask the specific questions, may
Y9 f8 V/ ^. [result in extensive, unnecessary, and expensive! P A$ @' |; E
investigation. The primary care physician should be
: d& L, N; B- y) Y6 X5 Caware of this fact, because most of these children, @, s3 A' H3 @% ?8 \% x3 D$ u% b: q9 ]
may initially present in their practice. The Physicians’# G" R: h: x# X* |
Desk Reference and package insert should also put a
6 t5 M+ f6 J, D6 h3 n* Qwarning about the virilizing effect on a male or
( ]$ X5 l$ A3 i- x; Q0 ~1 jfemale child who might come in contact with some-, j. Z' g, @6 s( q- F! M* I
one using any of these products.
5 [3 Z( ?0 V( ]1 ~; B# bReferences
8 o* L L6 R D; d& R/ h* F3 T" \1. Styne DM. The testes: disorder of sexual differentiation# G6 u( ` k# s4 Z7 ~7 t8 m
and puberty in the male. In: Sperling MA, ed. Pediatric& |0 `- \" v, j) [8 ~5 V
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
' m! A j! u' J0 C# J) Q+ ^' {" O2002: 565-628.
* o& Y- s) J4 y2 n( u2 o5 N7 f2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious/ I3 z3 r6 {& d+ O4 U+ G. r
puberty in children with tumours of the suprasellar pineal
: c! k! C$ Q( W* e8 R' B" E2 \% I8 Lat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
5 [+ h# h9 D3 `; j, v* ?Topical Testosterone Exposure / Bhowmick et al 5431 F) N& A' T" `& b- Y# x% \( T
areas: organic central precocious puberty. Acta Paediatr.5 t4 U# G, o& P& E I$ m! F/ ?
2001;90:751-756.
4 E! n) A/ K7 V% K- [9 B' b [3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
" }4 b3 X3 K( i1 h. b- |( N" NPediatric Endocrinology. 4th ed. New York, NY: Marcel) P$ ]5 s& r! ? Y5 ~) a K- j! ~
Dekker Inc; 2003:211-238.$ j7 a) n0 d: |# t) k
4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual" n% L" @) A; ?, J. X" G
development in a two-year-old boy induced by topical
, I5 N |& W0 Vexposure to testosterone. Pediatrics. 1999;104:e23.+ t6 a' t! X9 Y
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
: a8 p9 ^6 C- r$ M1 Y/ }Skeletal Development of the Hand and Wrist. 2nd ed.
# S: s" P2 O, `! Q. I; ^$ e6 [Stanford, CA: Stanford University Press; 1959.! m0 [4 \7 X# r. W
6. Physicians’ Desk Reference. Androgel 1% testosterone,5 z" ^9 n/ g9 A3 D0 i: K; @9 \
Unimed Pharmaceutical Inc. Montvale, NJ: Medical8 r3 B8 i9 i7 D6 C3 M7 @
Economics Company, Inc; 2004:3239-3241.
" c; U4 T$ S; T! Z* M( j4 _' V; o7. Klugo RC, Cerny JC. Response of micropenis to topical8 L) z3 u8 X- G; p. }# p# C2 r5 @
testosterone and gonadotropin. J Urol. 1978;119:
( J5 A8 K0 B6 G$ K: ^, m2 a' @ p667-668.5 S0 m" w T8 B' G, j4 m# f6 e
8. Guthrie RD, Smith DW, Graham CB. Testosterone
: g' B3 e% s5 `9 ~# Ctreatment for micropenis during early childhood. J Pediatr.
( b" e6 Q# n& P6 }1973;83:247-252./ c( M0 ]% |5 \% e% |) p0 I5 p
9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone& `) p. D- w, o# b8 j
therapy for penile growth. Urol. 1975;6:708-710.+ |( b5 p5 w& W. v
10. Husmann DA, Cain MP. Microphallus: eventual phallic
8 Z1 _; C% V+ _5 M7 Fsize is dependent on the timing of androgen administra-
% N/ B/ u5 H; @$ W" Otion. J Urol. 1994;152:734-739.3 P/ }) P. Q4 h3 d6 w5 ~' H
11. McMahon DR, Kramer SA, Husmann DA. Micropenis:
- \- q# A0 p1 Tdoes early treatment with testosterone do more harm9 C2 _9 u: T8 B" Z1 O' F! J" i
than good? J Urol. 1995;154:825-829.7 N4 \5 u& e; ]) r- ]
12. Takane KK, George FW, Wilson JD. Androgen receptor
" b5 {; j& n6 e+ u$ e3 u4 N# Jof rat penis is down-regulated by androgen. Am J Physiol.4 w) C) a# x6 H8 O( r7 q
1990;258:E46-E50.
9 d& ]( m" ^. a3 d" c13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect$ K& ]) g) x n; v+ O& {. U
of prepubertal androgen exposure on adult penile$ D3 I8 u; c/ {# s5 c& |
length. J Urol. 1996;156:783-787. |
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