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is a significant concern for physicians. Central
4 s1 B+ I0 t, X5 Hprecocious puberty (CPP), which is mediated
# \$ X/ y' c8 g" ~# n1 R! V6 Uthrough the hypothalamic pituitary gonadal axis, has
+ c6 k+ h! U! w+ L- @- q1 S$ Oa higher incidence of organic central nervous system
# d+ g, n; D B+ _lesions in boys.1,2 Virilization in boys, as manifested1 r l2 O! ?1 \2 R; w# b9 V4 a* `
by enlargement of the penis, development of pubic
4 P* V/ ^* Q3 ~7 v% }8 i7 Vhair, and facial acne without enlargement of testi-
- p$ S6 Y5 L; A1 D" e2 Q8 r5 ?cles, suggests peripheral or pseudopuberty.1-3 We
! C5 O3 {" t8 mreport a 16-month-old boy who presented with the
3 N, g' P0 G2 {# |$ Henlargement of the phallus and pubic hair develop-
+ e1 D& R9 I/ X! [$ p6 s- _ment without testicular enlargement, which was due
! R. w, t) K7 E8 n( ^5 w! lto the unintentional exposure to androgen gel used by
R9 {/ w r& Q1 ^3 @; ~9 w) Kthe father. The family initially concealed this infor-+ x4 d3 `; S7 E
mation, resulting in an extensive work-up for this* m) r1 |# M' T
child. Given the widespread and easy availability of" f% v" C' @% X1 y- p
testosterone gel and cream, we believe this is proba-
, r2 o. B" T9 W8 t. V$ u5 _, Tbly more common than the rare case report in the' A9 z7 [2 y+ N. [! p' X- }
literature.42 l& F5 F0 g4 `6 \" E4 W% r' u
Patient Report
4 X% B* w4 ?2 e+ b, N( u9 `A 16-month-old white child was referred to the
6 S) s @+ G; g* A; qendocrine clinic by his pediatrician with the concern* V; M2 X' F, n) q5 }) ~' i
of early sexual development. His mother noticed- [0 R/ q3 ^9 p- {$ q- W
light colored pubic hair development when he was
1 m7 u) V6 b f$ `' T: ?# f' j# YFrom the 1Division of Pediatric Endocrinology, 2University of! p7 a1 {; v4 ~8 V& ?/ P# E
South Alabama Medical Center, Mobile, Alabama.
- z9 Y8 v. Y6 |Address correspondence to: Samar K. Bhowmick, MD, FACE,
* _- K7 R9 Z8 L7 |( f7 w( n# m4 UProfessor of Pediatrics, University of South Alabama, College of
- R0 i( ~1 R- E+ ]3 J; i0 v5 dMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
1 i7 e0 F0 o& y8 Se-mail: [email protected].6 i. n# C4 G' C( d1 i
about 6 to 7 months old, which progressively became1 j2 F7 Z6 z/ _ R# l
darker. She was also concerned about the enlarge-
1 x6 H$ G7 B5 z, b- Zment of his penis and frequent erections. The child9 _: C. S* \6 O" _- |* q& v; u- B
was the product of a full-term normal delivery, with
( d5 _# b! w( W$ V G3 o1 Y; La birth weight of 7 lb 14 oz, and birth length of
# E- q `* J4 i$ `3 P20 inches. He was breast-fed throughout the first year
3 L( k8 y/ q4 I$ s% ]4 nof life and was still receiving breast milk along with
5 ]( B+ R& l% F" b, G# Vsolid food. He had no hospitalizations or surgery,
# x, x7 Z6 l) S" \" Rand his psychosocial and psychomotor development
/ T$ b' f4 t3 B' }; t0 u/ Y( Owas age appropriate.0 I5 s( G" N6 l' [3 m4 y
The family history was remarkable for the father,
$ O; y9 o) o9 v4 Q8 \who was diagnosed with hypothyroidism at age 16,5 P' A! {$ Q' B
which was treated with thyroxine. The father’s& @: `/ y, b% Z' [' r o) Y" A! `
height was 6 feet, and he went through a somewhat
9 ]7 s" C1 m* s, I N5 Uearly puberty and had stopped growing by age 14.0 v. ?2 o( p. C. B4 @
The father denied taking any other medication. The
/ b3 Q1 |, k. v( `7 gchild’s mother was in good health. Her menarche7 _. S/ U% O8 a* [
was at 11 years of age, and her height was at 5 feet2 Q; {. H, P8 }# F3 K' b* G* @8 N# \
5 inches. There was no other family history of pre-
9 p% L# ]. ~& j; a4 u ]cocious sexual development in the first-degree rela-
1 o* |3 m& F' t$ ~tives. There were no siblings.
4 H* H" J& |- U! zPhysical Examination( t4 J/ n1 I, Y% x
The physical examination revealed a very active,
5 I. a2 c4 x J) M* w! Oplayful, and healthy boy. The vital signs documented7 Z% f4 m. a8 ~2 I1 U: U# \% D+ m
a blood pressure of 85/50 mm Hg, his length was
4 s6 _1 F: m' _- [% R* X i: Q& u90 cm (>97th percentile), and his weight was 14.4 kg, I X% M# U1 M. _, l
(also >97th percentile). The observed yearly growth
0 o1 A$ c/ x5 k- d! k3 F1 Xvelocity was 30 cm (12 inches). The examination of
( |2 A1 ~- O8 q* _' lthe neck revealed no thyroid enlargement.6 H! S, y% _# q( V
The genitourinary examination was remarkable for
6 ]. x0 Y b6 W6 t2 d) uenlargement of the penis, with a stretched length of" J: s1 s6 b+ m: k9 ]" U; t% L1 Z
8 cm and a width of 2 cm. The glans penis was very well
0 q9 n) Z3 F3 p4 y+ ?# V! [. A! }6 Vdeveloped. The pubic hair was Tanner II, mostly around
3 g" w: m9 T& q5 [1 ~540
' d2 g, c+ A6 W! m0 Eat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from8 d& V3 h+ ~2 t" o, o9 L6 r! A
the base of the phallus and was dark and curled. The
/ Q# l" v ?" Ptesticular volume was prepubertal at 2 mL each.0 ?/ _) X* t# | j
The skin was moist and smooth and somewhat! D4 w5 i$ }! Z( a8 Y- |3 W. G; i
oily. No axillary hair was noted. There were no
. g' a7 p/ t% Y" Q- [abnormal skin pigmentations or café-au-lait spots.; w4 ~+ j2 S" C, m5 P5 z
Neurologic evaluation showed deep tendon reflex 2+0 Y" f0 p' H; p# O8 I8 z$ V- |% N
bilateral and symmetrical. There was no suggestion; ?. `# R$ R/ j! }) O1 d- x- z
of papilledema.0 ~" a& _" x& K: ?6 A3 I
Laboratory Evaluation$ l# [. n3 E9 ^& F& u7 N9 q
The bone age was consistent with 28 months by0 ?8 a; K2 m- t" M
using the standard of Greulich and Pyle at a chrono-
# a& P+ Q' u1 d0 h) ?logic age of 16 months (advanced).5 Chromosomal2 `! V3 P4 K" u& C) T
karyotype was 46XY. The thyroid function test+ s2 W6 j. F: k# \/ {) u
showed a free T4 of 1.69 ng/dL, and thyroid stimu-
a! F+ F1 J6 A4 @$ Y. E, nlating hormone level was 1.3 µIU/mL (both normal).7 J8 `# V; S, ]( ~! H! Z2 K: X/ ]2 J
The concentrations of serum electrolytes, blood* H' D, }& `- V. V, R; [9 p
urea nitrogen, creatinine, and calcium all were
" q; X# p5 W; G! Wwithin normal range for his age. The concentration
) c- h! W$ x; s" z8 l, P! \of serum 17-hydroxyprogesterone was 16 ng/dL
6 l: |9 `6 \% t+ Z: L" w(normal, 3 to 90 ng/dL), androstenedione was 20
- X* R7 T. v4 F$ |4 S# L [ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
P3 `) E* g) F9 V# cterone was 38 ng/dL (normal, 50 to 760 ng/dL),
' Z$ Y7 ~ M# J8 Cdesoxycorticosterone was 4.3 ng/dL (normal, 7 to
" u8 H6 C) `7 z# h" q) ^49ng/dL), 11-desoxycortisol (specific compound S)
. m6 _! |. V. B% t" S3 C/ o4 ywas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-1 |4 v) Z& ^( y
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
4 v8 ?6 w: n$ |, `5 z: qtestosterone was 60 ng/dL (normal <3 to 10 ng/dL),# p; G: ]3 I$ n) u8 {
and β-human chorionic gonadotropin was less than
! F9 ^& P* c- O& T; @$ A5 mIU/mL (normal <5 mIU/mL). Serum follicular
h6 V% r' Q! P$ Bstimulating hormone and leuteinizing hormone
' p+ e# g- K) c" rconcentrations were less than 0.05 mIU/mL" m% b# C( x ?% w
(prepubertal).
2 i+ E& Q) B& x4 EThe parents were notified about the laboratory
% Q$ p# F- Y. N7 R# A! b, }results and were informed that all of the tests were
& Z& R) E5 H: Unormal except the testosterone level was high. The
9 e" F- k3 Y! F6 r( }0 [6 D: Yfollow-up visit was arranged within a few weeks to
4 G, i3 s* T/ vobtain testicular and abdominal sonograms; how-
: ]) f# ~' F; U. C+ x" |1 }- c; T, Iever, the family did not return for 4 months.9 G+ Q4 ^$ N3 \/ N, h' C' P
Physical examination at this time revealed that the
# r* m! t; a3 k* d- x1 c; fchild had grown 2.5 cm in 4 months and had gained* p O# i# Z8 c" y- b3 y$ J
2 kg of weight. Physical examination remained, j Q+ Y/ V I6 }. O0 k
unchanged. Surprisingly, the pubic hair almost com-
; ]1 h2 ?- u; k, l4 v2 {pletely disappeared except for a few vellous hairs at
) p4 q( K9 c1 X5 ~the base of the phallus. Testicular volume was still 2
2 B; K w8 Y& D% hmL, and the size of the penis remained unchanged.+ t# N* K& V0 |( \. l
The mother also said that the boy was no longer hav-0 s0 W; I- { ~" C3 R1 w3 ?
ing frequent erections.5 s* B3 ~0 U+ ?* g9 w b
Both parents were again questioned about use of# R3 Z& O) d6 h2 g
any ointment/creams that they may have applied to) r F# u/ e* [9 d" D i% B0 w
the child’s skin. This time the father admitted the
U5 x L6 I5 A$ Y$ j* wTopical Testosterone Exposure / Bhowmick et al 541
+ K. {: B, G& o# u5 X( l4 u d0 F' iuse of testosterone gel twice daily that he was apply- L6 ^1 N6 ?& d% H9 g
ing over his own shoulders, chest, and back area for
6 J. z- M; ~1 P- M8 _7 n$ y7 a% ^& j% Qa year. The father also revealed he was embarrassed
: E+ f/ S0 V7 Pto disclose that he was using a testosterone gel pre-' A+ M$ J' g& j G' N ]" z2 U; s
scribed by his family physician for decreased libido* O4 P1 E1 O4 ~+ o3 ?, t
secondary to depression.' m2 z( L9 L; F- V% J# W2 m1 s
The child slept in the same bed with parents.* h* _8 B+ n: v: k
The father would hug the baby and hold him on his
( ^1 _, v4 G5 t nchest for a considerable period of time, causing sig-( L: ]: D$ a* o" q# _
nificant bare skin contact between baby and father. J7 d& F% i! X# `
The father also admitted that after the phone call,
4 k. G9 ? Q' ~3 j0 q& vwhen he learned the testosterone level in the baby
2 Q4 z3 `2 b$ `: E1 r, n9 Iwas high, he then read the product information
$ x/ `- }4 O' ^- z2 [3 Q; ]packet and concluded that it was most likely the rea-
# V/ A4 D+ `3 a- _son for the child’s virilization. At that time, they
6 s: U, e# q& N7 L! Gdecided to put the baby in a separate bed, and the- l# f% U) L$ O; [2 F' x
father was not hugging him with bare skin and had
; {: B5 }3 c* M7 tbeen using protective clothing. A repeat testosterone
: y' T0 F' ?2 n' i0 h) ntest was ordered, but the family did not go to the& E$ Z$ S; ~$ D1 v( B
laboratory to obtain the test.
, n0 `/ D |. Y4 c3 dDiscussion
" J/ M }* ~/ d3 YPrecocious puberty in boys is defined as secondary/ M9 y4 S. d u+ J& y* N9 p
sexual development before 9 years of age.1,48 q2 P! K. C. K
Precocious puberty is termed as central (true) when) @9 |7 V( k% T+ \) U0 \
it is caused by the premature activation of hypo-: k* t0 l# P6 Q6 w! Z
thalamic pituitary gonadal axis. CPP is more com-* X g5 [ s! y M# O
mon in girls than in boys.1,3 Most boys with CPP
* A2 b x* s8 H* P5 ]may have a central nervous system lesion that is, B8 s: x& {) B6 q' W
responsible for the early activation of the hypothal- D* l& ^( q4 s6 w& ]# w6 p
amic pituitary gonadal axis.1-3 Thus, greater empha-
# [3 b/ w# ^( @4 u; ysis has been given to neuroradiologic imaging in
0 Y, X: b" w. v8 O, |- hboys with precocious puberty. In addition to viril-
3 _0 V7 J1 K, N9 a. D! v% ^ization, the clinical hallmark of CPP is the symmet-5 i, O% ?9 O; Q
rical testicular growth secondary to stimulation by
* g" f0 a: @" N, ]: W: `gonadotropins.1,30 a4 d( `5 U5 j) M1 C
Gonadotropin-independent peripheral preco-
+ C# Y4 ], i/ b: W5 kcious puberty in boys also results from inappropriate/ U. n, F9 p5 U" l2 t
androgenic stimulation from either endogenous or
8 z. Z( ? @8 g% c' uexogenous sources, nonpituitary gonadotropin stim-
" }$ S! r, o8 r3 u+ Gulation, and rare activating mutations.3 Virilizing
) r/ _. @) \! Q* ?congenital adrenal hyperplasia producing excessive4 h! o6 g, I5 k. J' A
adrenal androgens is a common cause of precocious$ W2 V. f7 v4 c6 Q) M: d1 n
puberty in boys.3,4
* ?, n) u" F% `The most common form of congenital adrenal# g0 P/ x0 @% B# T! E) @
hyperplasia is the 21-hydroxylase enzyme deficiency.6 ], R+ ^0 W( w I# N+ \
The 11-β hydroxylase deficiency may also result in. _3 h( l3 T, W6 u W
excessive adrenal androgen production, and rarely," d9 |1 e) o5 i, x8 r* v
an adrenal tumor may also cause adrenal androgen7 q* w% B$ e$ ~0 B, D- q( j, h
excess.1,3/ V2 l; ~3 d$ g- {+ ^4 q* O# r
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
" `7 j- x9 ^) Q* R542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
# ]) G+ ]4 J: w0 N, p% F6 U& mA unique entity of male-limited gonadotropin-
4 Y# _2 p! G# {4 mindependent precocious puberty, which is also known
% V' _+ u' w5 b6 W$ las testotoxicosis, may cause precocious puberty at a1 s& m: A7 {# K$ j' H& G
very young age. The physical findings in these boys$ z5 B0 f1 C' R# |, p! ^
with this disorder are full pubertal development,
A* S+ ~; n/ l: ?including bilateral testicular growth, similar to boys$ |7 t! d( k8 d0 Y2 W# V3 l. U
with CPP. The gonadotropin levels in this disorder" H" A4 v" J8 H2 E0 K
are suppressed to prepubertal levels and do not show
5 A0 n. a; P7 w1 w0 N" kpubertal response of gonadotropin after gonadotropin-
# ?3 i% |. Z9 A' w9 ^releasing hormone stimulation. This is a sex-linked4 w# O+ v* G$ y0 E; |7 a' P
autosomal dominant disorder that affects only
% Q% C7 J6 S# v: umales; therefore, other male members of the family
; N- h/ O& o( k( {$ omay have similar precocious puberty.3& {! n& e$ U7 g; T
In our patient, physical examination was incon-
( _3 ]) x4 c+ r) Y( c: _# s% g5 e: t0 osistent with true precocious puberty since his testi-
$ G1 X% D+ a3 V' U- fcles were prepubertal in size. However, testotoxicosis
1 b9 O, q3 |2 r1 _2 O5 ]" Ewas in the differential diagnosis because his father
# }8 ]! z. v/ ^started puberty somewhat early, and occasionally,
) ?2 ^" i+ ]" Gtesticular enlargement is not that evident in the$ F, A2 {1 u" e ?$ i, M2 s
beginning of this process.1 In the absence of a neg-2 ^, _+ O1 F$ N" \
ative initial history of androgen exposure, our
- R- d9 E% }3 l! g) _- }biggest concern was virilizing adrenal hyperplasia,2 [' b; _$ |0 t9 W" F
either 21-hydroxylase deficiency or 11-β hydroxylase
. e9 w3 C4 X# g. i! J% [deficiency. Those diagnoses were excluded by find- e( n& y# h# |- `
ing the normal level of adrenal steroids.
# W7 x' z- m, f8 F, p6 X; UThe diagnosis of exogenous androgens was strongly- u7 q( G( J. b {. e9 m1 f2 E' d# m
suspected in a follow-up visit after 4 months because& T3 e2 W3 L" [5 L9 @ J! D) p
the physical examination revealed the complete disap-
0 Q. P+ g2 l( D' y9 hpearance of pubic hair, normal growth velocity, and
. T& e/ [& b& U0 A! ]' u8 n! vdecreased erections. The father admitted using a testos-
2 |; j, L0 e# J& I7 e; Qterone gel, which he concealed at first visit. He was
& w Y3 r8 Z. ?0 [- k3 H+ zusing it rather frequently, twice a day. The Physicians’
- i# X1 f' u5 R! sDesk Reference, or package insert of this product, gel or
- c U' ~+ m5 W* x. b6 U( N. `cream, cautions about dermal testosterone transfer to
9 l/ G! V6 t/ n: Q1 p- b; |$ ^* Dunprotected females through direct skin exposure." B- F+ }; P6 B E0 \( D1 W6 X3 r
Serum testosterone level was found to be 2 times the- X. m d$ Q2 B0 L% ^ U: R# `; A
baseline value in those females who were exposed to
$ H* P9 ?2 j3 E" J7 ceven 15 minutes of direct skin contact with their male
) h7 @; D% z! g4 K8 ipartners.6 However, when a shirt covered the applica-
Z) J( C0 Z' c* W% |- t1 {7 G; Dtion site, this testosterone transfer was prevented.
+ j0 F, f6 q1 E0 n0 l" _5 ~! S7 hOur patient’s testosterone level was 60 ng/mL,
8 X: r7 @9 g9 a- X" x( ~. r& ^which was clearly high. Some studies suggest that( z5 E' _& H/ N" b" K: i/ ?
dermal conversion of testosterone to dihydrotestos-
; e8 z5 u9 F) \1 R( O/ i2 yterone, which is a more potent metabolite, is more, f. ` H: ]. c9 v' t* n: _
active in young children exposed to testosterone: H( Z1 F& P' e9 P* Q9 }
exogenously7; however, we did not measure a dihy-" z, P- p3 I( T$ g
drotestosterone level in our patient. In addition to
& T# y; Q9 |: b' ~ o3 zvirilization, exposure to exogenous testosterone in
* R4 B8 I9 e8 Dchildren results in an increase in growth velocity and" W4 z. J( O7 K8 m
advanced bone age, as seen in our patient.) \* C- h) O2 o4 U6 K
The long-term effect of androgen exposure during4 w! b- W6 d- e8 m; k5 n2 \3 ` M
early childhood on pubertal development and final! Y" U; K: A2 n" W# n3 x$ p+ H
adult height are not fully known and always remain
1 J! u$ L5 o* J$ P7 ia concern. Children treated with short-term testos-, k; R# @% z* D- j
terone injection or topical androgen may exhibit some( `1 m, G& x9 a* M
acceleration of the skeletal maturation; however, after1 O2 Q. d" R6 l2 T
cessation of treatment, the rate of bone maturation3 B0 [: M. p8 S, I, k$ w
decelerates and gradually returns to normal.8,9+ g% x! J( @% d' r" n
There are conflicting reports and controversy
: @- x1 ^+ y. [5 E9 uover the effect of early androgen exposure on adult
# D+ d7 j$ Q$ p8 V8 o/ b( ~penile length.10,11 Some reports suggest subnormal
; h9 I- ]% ^2 s% U% |3 Nadult penile length, apparently because of downreg-
% l' _. V. T+ ]: W* B6 t) u4 \ulation of androgen receptor number.10,12 However,
' N. L5 D6 W% k$ LSutherland et al13 did not find a correlation between
) _; {0 j) K. g- i% v! ]childhood testosterone exposure and reduced adult
$ z: W1 U8 k, E: y$ \2 {penile length in clinical studies.
! b/ T8 B# `/ ?7 nNonetheless, we do not believe our patient is
" a h$ f/ o$ d" ~going to experience any of the untoward effects from
' y% D1 L4 G: a3 W9 Ptestosterone exposure as mentioned earlier because
" K! m& |; [: v0 H1 uthe exposure was not for a prolonged period of time.
' ~9 L; i! E0 ~- kAlthough the bone age was advanced at the time of* D4 |' w5 W1 ~- [' s
diagnosis, the child had a normal growth velocity at3 d5 A0 Y# o% {, w1 C
the follow-up visit. It is hoped that his final adult8 f1 Y5 ?9 k+ L4 u" m
height will not be affected.' d# D- B& O5 }" t) F' F
Although rarely reported, the widespread avail-7 E: ?3 o( v) |* Y
ability of androgen products in our society may0 x* z8 P3 M# _! P! \+ i$ d
indeed cause more virilization in male or female( N9 J* s* P4 Y: _/ }: s/ Z
children than one would realize. Exposure to andro-
: M. B3 A( Q5 ~1 r6 a0 ~4 ~. D% @4 Egen products must be considered and specific ques-; x2 l( N1 s* g0 D& h) M. V1 r
tioning about the use of a testosterone product or3 J1 e+ j+ v2 r5 J" Y1 g
gel should be asked of the family members during1 ?% R" g& n+ `1 x
the evaluation of any children who present with vir-9 B: Q( e3 U: _
ilization or peripheral precocious puberty. The diag-2 o) S7 B, p( Z# { t! i
nosis can be established by just a few tests and by% F8 s. u/ G* ~3 ]
appropriate history. The inability to obtain such a9 i+ M: r1 P' n9 c% Z. f p; s
history, or failure to ask the specific questions, may) e, _3 t* j8 o. B7 }/ K! u* {
result in extensive, unnecessary, and expensive% P/ D3 T) d* N0 M
investigation. The primary care physician should be: g8 B8 l) R) x2 f
aware of this fact, because most of these children! s8 [7 B$ T& H- s: z( v
may initially present in their practice. The Physicians’- d6 F& [3 u& l4 U4 H4 C+ o
Desk Reference and package insert should also put a9 x8 s9 R& y5 H) s$ H
warning about the virilizing effect on a male or
+ |: W7 l- T5 V- q. K5 G( ifemale child who might come in contact with some-, q/ P5 s- H7 s7 N
one using any of these products.; R1 p6 F/ N: A' D' x
References& c) W! S0 _$ ^- d0 i
1. Styne DM. The testes: disorder of sexual differentiation
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( G$ e! H& p) v' n$ D: W EEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;* f& ]# }) X/ S- y6 z4 v
2002: 565-628.# z9 p( i& l/ v: k
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious, j3 J; i" Z/ r$ ]* c% ]7 W' W7 |
puberty in children with tumours of the suprasellar pineal1 _% j$ ^3 Y* w3 Z
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from( F# ?" ?1 U) p2 }, @% u% l
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/ P$ v& b1 C4 @ v" s3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.8 _5 K. D6 l/ d/ A& z
Pediatric Endocrinology. 4th ed. New York, NY: Marcel
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exposure to testosterone. Pediatrics. 1999;104:e23.
5 A: H' Q# H2 s% b5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
4 }9 w' g2 e5 hSkeletal Development of the Hand and Wrist. 2nd ed.4 D o& w# @ s
Stanford, CA: Stanford University Press; 1959.
5 u$ p$ V" `8 V6. Physicians’ Desk Reference. Androgel 1% testosterone,7 `8 e" ^' ]$ j6 c. k6 d+ J/ k9 `
Unimed Pharmaceutical Inc. Montvale, NJ: Medical
! r. h* S) X( `2 T; VEconomics Company, Inc; 2004:3239-3241.
$ @' W0 B1 W3 ~0 M, E6 [# M7. Klugo RC, Cerny JC. Response of micropenis to topical0 o$ p4 r& |# H
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