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is a significant concern for physicians. Central
, D q: I, X- J s( O% Mprecocious puberty (CPP), which is mediated
) y+ i, [* S3 R; |) Q/ G- ~7 ^through the hypothalamic pituitary gonadal axis, has
7 K5 O& `9 `4 H9 Ta higher incidence of organic central nervous system( s' {' W. P' w7 z( |8 s5 N' }
lesions in boys.1,2 Virilization in boys, as manifested3 e% J+ v+ f2 M
by enlargement of the penis, development of pubic
" Z$ f& S; M4 n% `1 z [hair, and facial acne without enlargement of testi-8 X" c2 f) p( s: K( I. R
cles, suggests peripheral or pseudopuberty.1-3 We, o3 z( ~4 T) w, i) w
report a 16-month-old boy who presented with the9 B6 ?. ?; H3 z4 Q
enlargement of the phallus and pubic hair develop-
$ p+ F& ]7 I& | yment without testicular enlargement, which was due
& w6 n2 p; j! pto the unintentional exposure to androgen gel used by
. V3 \8 N" F% L/ u0 o; J7 Dthe father. The family initially concealed this infor-
. f) B9 Q9 l8 \, Omation, resulting in an extensive work-up for this
1 Q; X& w" w+ K. y0 D9 C) ?! tchild. Given the widespread and easy availability of
9 [* ?, n9 ]- x% X* I1 \0 E Dtestosterone gel and cream, we believe this is proba-
0 a1 f% Y" w2 Mbly more common than the rare case report in the* }3 ~( l/ W' w4 ^
literature.4% T$ T0 U0 ?4 ?: s, |
Patient Report" a7 w7 S9 d) k j
A 16-month-old white child was referred to the; ~: t, b2 g) u6 I
endocrine clinic by his pediatrician with the concern$ ]7 l0 K/ l% f! D6 y' d2 ?, b
of early sexual development. His mother noticed
* W' F P V3 Z. `. Nlight colored pubic hair development when he was
* B9 k1 N% n. ], k5 n! C5 Y3 rFrom the 1Division of Pediatric Endocrinology, 2University of
]9 [6 M4 k- L' y u9 W( U* P6 |+ RSouth Alabama Medical Center, Mobile, Alabama.
5 l! {5 ]/ Z/ [9 nAddress correspondence to: Samar K. Bhowmick, MD, FACE,- K8 m! f: G% x& E2 m8 l* W9 c
Professor of Pediatrics, University of South Alabama, College of. J) k: G& \! M5 T1 z; R+ Z" w0 ^
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
" O) M6 [8 Z' Z5 K. Pe-mail: [email protected].
5 v6 X: [4 P: Nabout 6 to 7 months old, which progressively became3 {( k6 \" a+ }7 Q+ Y, t
darker. She was also concerned about the enlarge-
& z, f9 F9 c. [4 Q" K7 h: f7 tment of his penis and frequent erections. The child
: n5 M* c& @6 O: h# O' Y6 lwas the product of a full-term normal delivery, with9 z* l& n0 a* D1 |4 O2 K. z
a birth weight of 7 lb 14 oz, and birth length of
/ y/ w# V, o6 z. y X2 n: z* t20 inches. He was breast-fed throughout the first year8 Z9 D3 U! _! W+ i" Y4 v2 O7 f! Z
of life and was still receiving breast milk along with0 @, `; N K, H9 m2 O
solid food. He had no hospitalizations or surgery,
* w" f* x0 c# N5 v9 q8 | dand his psychosocial and psychomotor development: U% X9 x/ {6 E0 r; s N( v
was age appropriate.2 l% _1 n/ E9 S$ n6 y* T" Z
The family history was remarkable for the father,
$ ~. Y7 x; U( ?6 T( fwho was diagnosed with hypothyroidism at age 16,! F% Z* r7 N1 `4 }
which was treated with thyroxine. The father’s
d7 O) ]. ~- ]1 R% K( jheight was 6 feet, and he went through a somewhat
, N, Y$ c1 z4 x# i2 E1 V* |8 r- cearly puberty and had stopped growing by age 14.
- T, B) p8 q: |3 r+ ]" }, ^The father denied taking any other medication. The
; D4 V# i/ |$ N3 D+ H6 dchild’s mother was in good health. Her menarche
) M6 d2 r6 j# w8 ewas at 11 years of age, and her height was at 5 feet
1 a/ F1 _3 [* F* w5 inches. There was no other family history of pre-" f, r8 Q( x5 }5 _" z
cocious sexual development in the first-degree rela-
; Z6 K; u# E5 x6 T0 Btives. There were no siblings.
! y8 K8 y0 F2 J1 ZPhysical Examination. P1 @1 l5 S0 ], X+ Q+ s) v( I# ]6 X
The physical examination revealed a very active,
& e! t5 u& e/ O+ d4 Iplayful, and healthy boy. The vital signs documented
( H. I; E5 k9 @: Ha blood pressure of 85/50 mm Hg, his length was4 `- f- A6 S; S1 a+ T( `
90 cm (>97th percentile), and his weight was 14.4 kg+ R6 O/ `; h5 n* m
(also >97th percentile). The observed yearly growth. p* Y; x. x4 G0 [
velocity was 30 cm (12 inches). The examination of" a1 e3 r! X/ I7 D
the neck revealed no thyroid enlargement.
) w# ] P; K% S3 [5 f0 iThe genitourinary examination was remarkable for& z4 f' m& C2 n, ^, m
enlargement of the penis, with a stretched length of
0 o, q3 R, _- k3 i* a6 q' v8 cm and a width of 2 cm. The glans penis was very well
. l6 {2 M# v# z( n. c/ _developed. The pubic hair was Tanner II, mostly around" Q2 h8 ^& H2 g4 b& C) O. _
540
' \! h9 ]1 Q6 ?+ M& _at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
; n. G% u5 G# U0 Fthe base of the phallus and was dark and curled. The, O s- a: a& T& \5 `! H
testicular volume was prepubertal at 2 mL each.
; }% @2 E: ?# c9 JThe skin was moist and smooth and somewhat
, j- Q& y. D4 uoily. No axillary hair was noted. There were no
, ]4 M7 ~6 w' N& {( dabnormal skin pigmentations or café-au-lait spots.! d0 n7 z" d: I% ` z1 e: g
Neurologic evaluation showed deep tendon reflex 2+
; e& @$ ^( q3 q. _+ bbilateral and symmetrical. There was no suggestion
7 r) F8 | w# G+ V- g9 V/ t# rof papilledema.0 t, M, G9 q9 `% v7 Z0 @
Laboratory Evaluation
& {3 G9 C* L' g- W; M4 D0 [' Y' kThe bone age was consistent with 28 months by a' U! _6 ~. j8 I
using the standard of Greulich and Pyle at a chrono-# h6 r# M ?: g1 r
logic age of 16 months (advanced).5 Chromosomal6 T* M. \; N' B2 h }* C+ @ j
karyotype was 46XY. The thyroid function test: U! Y5 P/ L* i
showed a free T4 of 1.69 ng/dL, and thyroid stimu-8 w, r- Q" e2 `. e
lating hormone level was 1.3 µIU/mL (both normal)." V, @! z" k, T
The concentrations of serum electrolytes, blood6 Q$ {; c# S& t) y
urea nitrogen, creatinine, and calcium all were7 e9 X# k5 r6 W/ W# g3 K
within normal range for his age. The concentration: E8 `) O2 j, v* k
of serum 17-hydroxyprogesterone was 16 ng/dL
; P( @ }( t4 w(normal, 3 to 90 ng/dL), androstenedione was 20; D L. f% y- Z0 s, n
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
7 a+ p5 K4 h) c* `# aterone was 38 ng/dL (normal, 50 to 760 ng/dL),
' H, W) o X7 l; B5 f* ] J idesoxycorticosterone was 4.3 ng/dL (normal, 7 to% [9 b/ q& e) ^: {
49ng/dL), 11-desoxycortisol (specific compound S)
$ P3 q( T9 \, h: }was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-; m5 |6 [* ~# k# L; _6 u
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
9 k6 U1 U |8 htestosterone was 60 ng/dL (normal <3 to 10 ng/dL),
- o8 |# a ?# F. v4 E& Z, l% eand β-human chorionic gonadotropin was less than- V( ]9 s4 E% d' s0 x- y' r
5 mIU/mL (normal <5 mIU/mL). Serum follicular; g U% h6 X8 V( v# p) k* k9 u& b
stimulating hormone and leuteinizing hormone D5 W" ?& H; [
concentrations were less than 0.05 mIU/mL
2 n- V) k- P4 \& q) z2 m(prepubertal).
* {+ g( A) Z$ x% o2 UThe parents were notified about the laboratory
/ N4 E8 u* _$ y) Zresults and were informed that all of the tests were
; o2 n/ W* N+ D6 i+ H- Rnormal except the testosterone level was high. The6 }! v+ q% C0 K- f5 e6 Y$ l
follow-up visit was arranged within a few weeks to6 a" V; f0 I' O+ C0 l, s/ r
obtain testicular and abdominal sonograms; how-
( U; _( L' P1 d Never, the family did not return for 4 months.6 q0 M- B H0 e" y' d$ k
Physical examination at this time revealed that the% O0 B5 N6 B9 G# a1 t* ?9 P
child had grown 2.5 cm in 4 months and had gained
) ]: a( u2 |1 J7 C9 O5 O; s) n0 I2 kg of weight. Physical examination remained
6 T& S0 |6 x( z& S! Kunchanged. Surprisingly, the pubic hair almost com-
$ P. u* `3 A7 \$ [pletely disappeared except for a few vellous hairs at( ~( d+ j6 ^. R& Y# s
the base of the phallus. Testicular volume was still 2
/ }% [" d( x3 a$ \! t1 E/ i9 [mL, and the size of the penis remained unchanged.
- p" t' i% f7 Y! o& [The mother also said that the boy was no longer hav-
1 ^- _3 F9 }7 e' p3 }, i- N! A1 U7 xing frequent erections.
: J- N/ Q: f8 W" Z$ QBoth parents were again questioned about use of
. F8 ?9 j! [ Xany ointment/creams that they may have applied to: e1 G( H. Z. v9 O$ _4 a' c
the child’s skin. This time the father admitted the
, W1 |! `: _/ a1 d1 zTopical Testosterone Exposure / Bhowmick et al 5419 |8 W6 n9 ^( t' ~& S
use of testosterone gel twice daily that he was apply-! a- h/ Y. z/ k" E! j- d" |
ing over his own shoulders, chest, and back area for
& o7 k) M' X! Y/ o; [9 H J( B9 ?- Fa year. The father also revealed he was embarrassed# k! V5 t$ n3 H; a
to disclose that he was using a testosterone gel pre-& \6 g7 O G; n. f0 d+ U5 O0 L
scribed by his family physician for decreased libido. s, s# l: W7 a$ O5 r
secondary to depression.& ~1 ^5 `% x0 m/ Y
The child slept in the same bed with parents.& |1 G9 V2 p( [" Y4 B; j! s& S- ^
The father would hug the baby and hold him on his
7 N2 J. s7 R5 v9 e Q( ^, o+ ]chest for a considerable period of time, causing sig-
0 i; A: O8 K8 G; A4 D! Ynificant bare skin contact between baby and father., k/ y& O0 p' R3 L. l: r
The father also admitted that after the phone call,) ?* n1 x, C" p' ]7 ?) t3 p
when he learned the testosterone level in the baby
" a. g: [: a# ?& g- N$ Nwas high, he then read the product information
: ^ f8 F8 s8 E! h5 |* f: u) |0 ipacket and concluded that it was most likely the rea-
: H# n: v% O- a; U( Q. Ason for the child’s virilization. At that time, they
. q/ P* A K' E+ g n3 \- Idecided to put the baby in a separate bed, and the
, ?: O& @( L) y# a: B! lfather was not hugging him with bare skin and had
8 u# i' N% C, j. j# ]6 A0 ebeen using protective clothing. A repeat testosterone
2 A$ J& }2 u, n% jtest was ordered, but the family did not go to the) @( f0 }0 P8 o2 h; ~# j2 L' i, k
laboratory to obtain the test.
8 f" }7 d2 D% E6 u1 t, \- Y6 HDiscussion
+ I4 g7 { c; _9 H( gPrecocious puberty in boys is defined as secondary
, Z: C! n* T3 j5 K6 nsexual development before 9 years of age.1,4
. O! g. }( c3 i& V, x) x! vPrecocious puberty is termed as central (true) when; j1 M; Z4 E$ [* l7 ?# a4 ~4 B
it is caused by the premature activation of hypo-' b/ ^8 j: @! p/ w
thalamic pituitary gonadal axis. CPP is more com-9 V0 l% @$ c2 M( C% o& g1 O+ S- ?
mon in girls than in boys.1,3 Most boys with CPP
; R- O5 d7 q6 i! P5 g2 Imay have a central nervous system lesion that is9 ]: l' z m+ @' c6 L, S
responsible for the early activation of the hypothal-' l7 e( d6 h$ _( T# E
amic pituitary gonadal axis.1-3 Thus, greater empha-
* ^. S# L& B* N0 R0 z6 Qsis has been given to neuroradiologic imaging in3 ^* V* b+ [! d M
boys with precocious puberty. In addition to viril-5 p* i4 z7 V# _8 G
ization, the clinical hallmark of CPP is the symmet-) X" Q3 W$ l" S. @
rical testicular growth secondary to stimulation by
9 \0 l0 M% j# b B( b& Q" Xgonadotropins.1,3
a/ E: P2 O7 Q( L# @8 TGonadotropin-independent peripheral preco-
2 q- P, J: b# o l" |" dcious puberty in boys also results from inappropriate( |6 g5 Z+ l* x* ^' w' C4 H0 A0 Y% ]
androgenic stimulation from either endogenous or
1 E; n6 x/ H5 S* \/ e6 [$ Y/ \4 Aexogenous sources, nonpituitary gonadotropin stim-( \ f- d$ a: X
ulation, and rare activating mutations.3 Virilizing; ]) U( ?5 W' z) w
congenital adrenal hyperplasia producing excessive; [. G4 H$ T# Y0 ]8 h$ K5 i' e
adrenal androgens is a common cause of precocious
$ _+ H6 k \8 Cpuberty in boys.3,4/ l" |* [) j" x# Q# L) K
The most common form of congenital adrenal
; R) |5 J( i& M+ ], r Q fhyperplasia is the 21-hydroxylase enzyme deficiency.
/ M( G! P7 e% N+ X; cThe 11-β hydroxylase deficiency may also result in" l; o) _# u. A1 w6 I: `( [
excessive adrenal androgen production, and rarely,- Z5 W! [/ ^, ^3 E/ U
an adrenal tumor may also cause adrenal androgen- `. G: j& B5 i+ T" @
excess.1,3
' N1 u/ v! ]: Qat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
) l1 P/ E% z; d4 O% J% {* c- O542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
' S8 c7 A! x- X( O2 h; mA unique entity of male-limited gonadotropin-
6 R( S5 U0 h! x8 B2 x9 [' \4 \independent precocious puberty, which is also known, h/ h6 m& y. ]5 f/ b
as testotoxicosis, may cause precocious puberty at a
! N; g, m& q; p$ R8 D6 Svery young age. The physical findings in these boys9 E1 f. O$ l7 L: o2 R8 }! B
with this disorder are full pubertal development,- i. k6 a& V& }& d3 Z* X5 m
including bilateral testicular growth, similar to boys
1 f; _. N: ^0 d, j9 `% w8 Xwith CPP. The gonadotropin levels in this disorder
6 ~; J% P9 {( I7 L) g1 d4 Vare suppressed to prepubertal levels and do not show
8 M8 V5 s# T3 x* \+ E" dpubertal response of gonadotropin after gonadotropin-
* d. h9 v6 I+ Kreleasing hormone stimulation. This is a sex-linked% z$ v- m( u$ [
autosomal dominant disorder that affects only
( x. o4 b/ n- @1 |! @: bmales; therefore, other male members of the family
) d4 B# [5 O# J/ p. r2 j+ D* Pmay have similar precocious puberty.3/ I/ U4 Z$ P: y$ U5 e/ n7 F
In our patient, physical examination was incon-
' H4 ?+ ~. b- I) W3 r [8 j+ @sistent with true precocious puberty since his testi-- v+ A7 u+ v% c* s" F0 t
cles were prepubertal in size. However, testotoxicosis
3 t% T7 t# L J5 \" n; [" ^% z0 M5 [0 ^was in the differential diagnosis because his father
" M. s3 k& R, g! r' Nstarted puberty somewhat early, and occasionally,
) N% X7 U; Y; F% H3 Etesticular enlargement is not that evident in the w1 e/ _% x0 e% ]4 s/ s |
beginning of this process.1 In the absence of a neg-8 @8 ]2 V D; R% c' }6 z0 i
ative initial history of androgen exposure, our! z/ C/ a7 i0 ^0 v# v/ v
biggest concern was virilizing adrenal hyperplasia," j) G8 C/ B6 [
either 21-hydroxylase deficiency or 11-β hydroxylase5 v+ u' |6 @4 {) k. R! O
deficiency. Those diagnoses were excluded by find-# e7 t8 ]/ R& f! n$ `1 d$ j b$ z
ing the normal level of adrenal steroids.. T, O w2 L, ]6 G
The diagnosis of exogenous androgens was strongly% O! }) c2 R0 ^, F
suspected in a follow-up visit after 4 months because0 Z- ^4 o. d! V
the physical examination revealed the complete disap-9 J' z0 Q' t! h
pearance of pubic hair, normal growth velocity, and
9 ?5 p+ q8 u7 I# d1 }decreased erections. The father admitted using a testos-
% r. Q( A+ X; X. R& a# Zterone gel, which he concealed at first visit. He was4 v, |- K0 E" r
using it rather frequently, twice a day. The Physicians’' x# g9 h0 Z* o+ y E
Desk Reference, or package insert of this product, gel or
9 K7 s! q% }$ y$ g1 d8 ucream, cautions about dermal testosterone transfer to. y2 Q3 R9 H- c
unprotected females through direct skin exposure.
( g, E9 U3 u8 a# o7 A& l4 g% lSerum testosterone level was found to be 2 times the Z$ S; ~' X% g8 R
baseline value in those females who were exposed to: C% |% P! z2 m% t# _
even 15 minutes of direct skin contact with their male
( y K; O7 l2 l; Q8 ipartners.6 However, when a shirt covered the applica-- z/ o8 y' r- ~2 V: N9 e
tion site, this testosterone transfer was prevented.
: y$ \" T) k. T0 qOur patient’s testosterone level was 60 ng/mL,
( o% I4 p5 C! r5 R8 `3 X, |& g0 y" mwhich was clearly high. Some studies suggest that
$ a |& L: c1 u& i, L L% Bdermal conversion of testosterone to dihydrotestos-
, z5 L) Z5 V) jterone, which is a more potent metabolite, is more
0 X2 w* ~$ ]7 N# zactive in young children exposed to testosterone
0 W! [, D- U; nexogenously7; however, we did not measure a dihy-5 K7 V$ a# | J* Z
drotestosterone level in our patient. In addition to
6 E* f# P9 C/ v7 v9 W4 Avirilization, exposure to exogenous testosterone in
. a+ e( ~8 M! \, H, m6 j' K0 ? ]children results in an increase in growth velocity and
$ s( g) n% K! h7 |. ~advanced bone age, as seen in our patient." m$ Y6 q% x* d _. n. f
The long-term effect of androgen exposure during
5 k& M& I7 O r! R! a- R& U2 d* j8 M- zearly childhood on pubertal development and final/ v: q6 _7 \/ z
adult height are not fully known and always remain
5 u+ O* \ O7 }( m4 I3 va concern. Children treated with short-term testos-/ u+ s' V% w, e9 \. @% N
terone injection or topical androgen may exhibit some5 a0 L2 e3 R& h2 p; ]" j7 `
acceleration of the skeletal maturation; however, after( _2 E& o1 r3 [0 z6 O2 u) p. f
cessation of treatment, the rate of bone maturation% l; X! y3 X% A/ O, ?& q
decelerates and gradually returns to normal.8,9) z7 @( A; h. }- x& \0 g) \; N
There are conflicting reports and controversy
. m m. E8 L+ E+ Tover the effect of early androgen exposure on adult& |+ [# p6 t9 ]; A9 L
penile length.10,11 Some reports suggest subnormal; a+ B8 }8 x/ {+ Q7 L/ Q, i* B
adult penile length, apparently because of downreg-9 G3 n! C4 r& Q6 I" C
ulation of androgen receptor number.10,12 However,
% S8 |# Y% c# Y! s8 bSutherland et al13 did not find a correlation between1 N9 ]+ L2 w0 o- x, e% z( U
childhood testosterone exposure and reduced adult
& t( u6 b- e* D1 q) Vpenile length in clinical studies.
- d) q. r& R5 s* ^Nonetheless, we do not believe our patient is( Z% l, B9 ^* v' E0 Y
going to experience any of the untoward effects from; q. g' T. F1 }+ M9 I$ A b; _ a
testosterone exposure as mentioned earlier because
' V }2 q) i; }2 y, Ithe exposure was not for a prolonged period of time.$ v2 S6 T# V) ^, f0 G
Although the bone age was advanced at the time of
) Z7 q% U" o/ v$ G3 l( o, N, r( w# D6 Ddiagnosis, the child had a normal growth velocity at
+ M4 ~$ X, N9 n% E, t& P! gthe follow-up visit. It is hoped that his final adult, J8 e! f' X& a M( n3 p
height will not be affected.: t3 S8 `4 n" i' S7 ]3 A$ I2 T
Although rarely reported, the widespread avail-# t @5 R5 s, G* [
ability of androgen products in our society may, Q- x! W- ]6 A& ]1 |8 S7 m
indeed cause more virilization in male or female# C- N" a6 O' u& g( p
children than one would realize. Exposure to andro-1 h5 {/ n, n+ |2 ~* E' p$ {* j
gen products must be considered and specific ques-# e D9 \1 o) y- i, j7 }( K2 }% V
tioning about the use of a testosterone product or
2 v7 k4 z6 }: B3 Y) I1 ngel should be asked of the family members during
( m* F. O! Z B1 b! |the evaluation of any children who present with vir-$ X" m1 y& w3 j7 a
ilization or peripheral precocious puberty. The diag-
( a# ^, v& E0 R& b% xnosis can be established by just a few tests and by
# |: c9 X* W+ K& d; B, Jappropriate history. The inability to obtain such a
! A% X- E; s8 v# u1 {history, or failure to ask the specific questions, may
- \+ i) S" E j, ?2 ?- H7 Nresult in extensive, unnecessary, and expensive
8 O; V/ m, N! A; \3 qinvestigation. The primary care physician should be: x! X/ t( X$ `- E* I+ Z
aware of this fact, because most of these children
: T6 @& f F* s# T( J, t4 O" K6 smay initially present in their practice. The Physicians’
4 ~) S' n- l6 \+ G- t, jDesk Reference and package insert should also put a
+ H) T: _# I7 J. s" S- ~. O% Fwarning about the virilizing effect on a male or" ~4 `# j5 ~1 q+ L9 E
female child who might come in contact with some-: O* H7 c/ ?0 |
one using any of these products.( w$ B3 w/ `5 n Y8 Z/ g4 ^
References1 w' t; V$ i% p4 z( D; o3 c
1. Styne DM. The testes: disorder of sexual differentiation& [# G" ~" o0 _5 b7 w9 r A( y
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Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;- T6 t o S* Q4 g4 s1 |- m$ R* @2 m( z
2002: 565-628.3 B; [. f9 s" q. a% `
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious2 U3 a+ p6 P7 ^/ q- a$ |
puberty in children with tumours of the suprasellar pineal
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areas: organic central precocious puberty. Acta Paediatr.
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3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.3 y+ U+ \" O* d; H( x3 z' C
Pediatric Endocrinology. 4th ed. New York, NY: Marcel
& x; o: ?: g7 vDekker Inc; 2003:211-238.& K- r/ f9 v" F: o7 {' m
4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
/ I3 Q0 B7 i9 N+ M, ]$ @$ o' e' fdevelopment in a two-year-old boy induced by topical
- Z) q! o! n2 c4 E r6 kexposure to testosterone. Pediatrics. 1999;104:e23.
' `: z+ T9 d/ r6 t- Z5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
- z: Q& M; O, ?+ oSkeletal Development of the Hand and Wrist. 2nd ed.6 n0 D' I0 g, O5 f
Stanford, CA: Stanford University Press; 1959.
* X0 t& R; I" a6. Physicians’ Desk Reference. Androgel 1% testosterone,
0 n$ }/ P& [( b# A) j% ~5 @0 m, yUnimed Pharmaceutical Inc. Montvale, NJ: Medical5 L/ |1 O% U- T. ?+ W. A4 X O3 _
Economics Company, Inc; 2004:3239-3241.
3 A$ O/ c, H9 r1 t, j/ Q! S+ ~7. Klugo RC, Cerny JC. Response of micropenis to topical
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