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is a significant concern for physicians. Central
6 n9 M @( D" c: lprecocious puberty (CPP), which is mediated
1 E% |! p v. o7 Athrough the hypothalamic pituitary gonadal axis, has8 h; q! i$ T* j' S
a higher incidence of organic central nervous system' T; ~3 q: a. b, U% \* s. X( {
lesions in boys.1,2 Virilization in boys, as manifested- j* P5 q9 R) l/ W$ t: y K, `
by enlargement of the penis, development of pubic
% c% I' U6 I' H4 z! X% yhair, and facial acne without enlargement of testi-
Q, Z$ S! b7 r! h/ t% Gcles, suggests peripheral or pseudopuberty.1-3 We5 J7 ?' I2 |" W+ ~! H
report a 16-month-old boy who presented with the
( X9 q& d' M6 L, ]0 \4 p5 M' cenlargement of the phallus and pubic hair develop-
/ V8 C4 A" f, }5 K# a3 f/ R/ J: e1 ement without testicular enlargement, which was due/ f$ `3 O# {8 n$ ^4 t3 ^% M2 E
to the unintentional exposure to androgen gel used by
1 @2 m/ `, v/ _the father. The family initially concealed this infor-& z7 ^' W" H, T0 B8 y4 T' S
mation, resulting in an extensive work-up for this0 D9 \- C4 F$ b
child. Given the widespread and easy availability of
; D% O, s5 p ytestosterone gel and cream, we believe this is proba-
2 Q& F5 N) Y9 O- m/ Y2 t3 v5 sbly more common than the rare case report in the7 ^) J- F2 A: q
literature.49 N [2 A+ X, ]. M/ ?7 ~
Patient Report
# @+ }1 a8 D7 e- w& K7 r0 r1 w9 eA 16-month-old white child was referred to the* t7 E; u8 I: X9 {% E: i2 ?
endocrine clinic by his pediatrician with the concern* \% X( n% R1 V: B
of early sexual development. His mother noticed
' b, D* @, }& {- d8 H7 k1 y2 `light colored pubic hair development when he was
( \, C8 h( g5 n& S- qFrom the 1Division of Pediatric Endocrinology, 2University of
* t) l- S0 w6 O" o; s; bSouth Alabama Medical Center, Mobile, Alabama.
. B; \2 P+ Z0 r4 L. KAddress correspondence to: Samar K. Bhowmick, MD, FACE,
: v0 y0 @6 M+ A, H# WProfessor of Pediatrics, University of South Alabama, College of
) d9 J8 V5 u- E. |Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
: }8 ~% m7 _5 ^& Z- C9 m7 Ce-mail: [email protected].4 a) Q/ k" @# W) i! D: ], I( J
about 6 to 7 months old, which progressively became
; d* v. c5 {! n, xdarker. She was also concerned about the enlarge-" Q0 m, W* y$ D
ment of his penis and frequent erections. The child) g8 L* u2 L) ^
was the product of a full-term normal delivery, with
4 ]" S+ `" s* \, c7 Xa birth weight of 7 lb 14 oz, and birth length of
- U; W6 F1 i& @6 A8 E" D& I X$ B! n2 L20 inches. He was breast-fed throughout the first year
+ m* U* ?! t# mof life and was still receiving breast milk along with
# [3 ^& D- ]9 L4 [4 L9 z7 ~1 asolid food. He had no hospitalizations or surgery,
# q F5 d$ J6 N! N- Aand his psychosocial and psychomotor development L3 V' {" [9 E, s1 Y
was age appropriate.
( z8 V8 v% Q# }3 P0 fThe family history was remarkable for the father,- e: ], E; n1 F6 }/ H, M' l
who was diagnosed with hypothyroidism at age 16,
! Y& s5 H! c6 d% R: Ywhich was treated with thyroxine. The father’s
% {6 c2 l+ r* Y( `height was 6 feet, and he went through a somewhat9 H$ A6 } u8 I W P
early puberty and had stopped growing by age 14.
# t. ]$ x- T% ]2 N& L8 l7 LThe father denied taking any other medication. The
3 J% e5 a% D9 c! V* mchild’s mother was in good health. Her menarche- ?! f# j, Y! h0 Y2 Y( e
was at 11 years of age, and her height was at 5 feet
3 y# b! ~7 W1 M! |2 Y2 S) C5 inches. There was no other family history of pre-
8 ~9 n" g+ t& `& icocious sexual development in the first-degree rela-: @, x3 \: W- G! A6 P, W
tives. There were no siblings.
2 \3 s# F# o6 [6 SPhysical Examination
% Z( x- x4 l" I3 w y8 yThe physical examination revealed a very active,
# M$ B0 V: c" R; }% s- bplayful, and healthy boy. The vital signs documented
# f' c9 x: ]& e7 j( r" |' [a blood pressure of 85/50 mm Hg, his length was
) A# g8 J* C8 _, W90 cm (>97th percentile), and his weight was 14.4 kg/ j5 F( N! O$ X' r/ P8 q/ y4 d
(also >97th percentile). The observed yearly growth5 p2 {. m. A' I( B
velocity was 30 cm (12 inches). The examination of
6 l' A( N0 [8 ~0 s/ U/ J; J+ vthe neck revealed no thyroid enlargement.; r' r. j6 X5 I4 \* l
The genitourinary examination was remarkable for
, B2 j: X8 _% W8 K% F0 Henlargement of the penis, with a stretched length of
* Q: P( y8 X) ]8 g( q. u0 V8 cm and a width of 2 cm. The glans penis was very well
5 I) a7 X$ `7 ]0 Qdeveloped. The pubic hair was Tanner II, mostly around, T( o$ Q# C/ n/ W3 U% |" I' a
5400 `4 Y# [6 `) H
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
& Q% ], U0 M# O; j( othe base of the phallus and was dark and curled. The
( |( V% u& E6 `7 d: v) Utesticular volume was prepubertal at 2 mL each.
- Q5 H$ J; G# t; e4 ^( w2 NThe skin was moist and smooth and somewhat
0 \5 S. |+ r( s. Boily. No axillary hair was noted. There were no
E& P: |* t4 sabnormal skin pigmentations or café-au-lait spots.
9 }; q: s' ?5 Z" MNeurologic evaluation showed deep tendon reflex 2+2 {5 \* ?' ~2 S( J; i3 I2 ]
bilateral and symmetrical. There was no suggestion4 Q8 l4 i5 K1 K; Q6 J3 Z% g
of papilledema.& p2 g7 d! f3 U* _, M1 G) n
Laboratory Evaluation
6 J* V6 ^+ A3 m W9 l' y+ LThe bone age was consistent with 28 months by
# D6 [9 I9 q9 D2 O* Qusing the standard of Greulich and Pyle at a chrono-1 Y% L# S2 T- I* Z( z
logic age of 16 months (advanced).5 Chromosomal. c6 k& I4 k4 d& ^7 t
karyotype was 46XY. The thyroid function test
. N' q o# Y3 Zshowed a free T4 of 1.69 ng/dL, and thyroid stimu-
! x* I: \3 z! w" X5 F) W) ~* T& e% Qlating hormone level was 1.3 µIU/mL (both normal).
# ~9 q. t1 _: H- _, k. oThe concentrations of serum electrolytes, blood7 C* M' h. t0 I0 R% J
urea nitrogen, creatinine, and calcium all were
+ R" E) ^" l1 q$ w6 n6 Z7 |within normal range for his age. The concentration
- p1 O, {% ^; wof serum 17-hydroxyprogesterone was 16 ng/dL* x3 r" z7 h. @+ H
(normal, 3 to 90 ng/dL), androstenedione was 20# k7 u3 {: t6 [& J6 }2 E
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros- A! e( p+ U& M: E" ?% `, Q
terone was 38 ng/dL (normal, 50 to 760 ng/dL),
' q% x* y! k o5 A* }desoxycorticosterone was 4.3 ng/dL (normal, 7 to3 _7 m, r9 H2 C3 Y$ K- r
49ng/dL), 11-desoxycortisol (specific compound S)
/ Z* R$ P- u' y4 dwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
; r$ D* l" B* z9 H0 y0 ktisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total" z1 M8 O/ k6 G6 C
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),) Y6 B; g8 {0 b; `" z7 s' ~& p1 l
and β-human chorionic gonadotropin was less than+ i5 F, G. C8 z# Q8 [3 Z7 v
5 mIU/mL (normal <5 mIU/mL). Serum follicular6 g9 d# ]0 N: t3 S( G
stimulating hormone and leuteinizing hormone$ K0 X4 R7 x6 y1 d# {
concentrations were less than 0.05 mIU/mL9 P8 }7 g6 J$ R2 I$ S$ p
(prepubertal).
1 d$ Z. |/ c0 F; y+ K+ xThe parents were notified about the laboratory2 H7 m& B- B% V
results and were informed that all of the tests were
! h- h' K* k- Nnormal except the testosterone level was high. The
. s/ I( { X" Y7 _/ R: `2 a W! \follow-up visit was arranged within a few weeks to
+ G' t# Z+ C) y1 sobtain testicular and abdominal sonograms; how-
" x0 t' P# B2 r& W8 P0 i9 g9 Kever, the family did not return for 4 months. [; \8 o* u; I ^. ^# n
Physical examination at this time revealed that the
* J) v4 }' f& `. d4 n$ n9 achild had grown 2.5 cm in 4 months and had gained P, ^& D7 P8 s! h; u4 \8 B" I
2 kg of weight. Physical examination remained
3 K! }* j# h% |+ D8 U/ uunchanged. Surprisingly, the pubic hair almost com-
2 I% d' |7 J5 H2 s! J. W" y0 H Zpletely disappeared except for a few vellous hairs at
" Y! T+ {( u; r& s, m- f3 ~the base of the phallus. Testicular volume was still 2
& E" C5 L4 x: x$ T5 R l" _! amL, and the size of the penis remained unchanged.
; w, v ]6 U/ b" v/ W5 O KThe mother also said that the boy was no longer hav-0 T3 H2 \) ]3 \; q; u% W
ing frequent erections. w6 m' w) x3 G3 j
Both parents were again questioned about use of
# I5 j2 f U+ ?1 hany ointment/creams that they may have applied to
$ j+ y. b) u/ Y, B" wthe child’s skin. This time the father admitted the
) {0 {, }% K- R/ H# l- ^Topical Testosterone Exposure / Bhowmick et al 541
- i% N k) ~# ^3 B" O2 I3 ruse of testosterone gel twice daily that he was apply-
0 \9 k" F1 c N: S1 f) {% @: L% Wing over his own shoulders, chest, and back area for
8 [1 x, B3 `* B9 Z" L* ^) Fa year. The father also revealed he was embarrassed
& o4 {' [: K C+ }0 A5 A) N g4 Nto disclose that he was using a testosterone gel pre-1 }, C1 r7 p) O! j L7 N( w
scribed by his family physician for decreased libido
$ I8 ?- e2 m9 w; o( {: `secondary to depression." {9 s: ~! d8 R& _
The child slept in the same bed with parents.. j* }' ~5 D1 x( c
The father would hug the baby and hold him on his3 G0 }! Z) Z* U8 n
chest for a considerable period of time, causing sig-/ ^( b6 b4 e" Z' z
nificant bare skin contact between baby and father.
/ s8 ^8 c& z: H/ BThe father also admitted that after the phone call,
: A6 Y; n# D* t" c/ O- |. Vwhen he learned the testosterone level in the baby7 v6 Q3 Y" Z) ~1 U) h, Y, X% ?
was high, he then read the product information
" J6 @; B: J# T) h7 F6 p. T. L! N- @ Upacket and concluded that it was most likely the rea-
! y( m+ ~) R& x# s, l, uson for the child’s virilization. At that time, they
! |5 e2 X7 ~% Y/ c% b: v& I& A5 udecided to put the baby in a separate bed, and the2 u+ E1 y3 ]5 S7 D# [- u
father was not hugging him with bare skin and had
6 ?' J% h& E2 \& I& L* ]+ H- ubeen using protective clothing. A repeat testosterone' P% o. i* x9 A) S- [
test was ordered, but the family did not go to the
+ a3 I. M: _1 _' ]laboratory to obtain the test., S& n: \$ ]$ `' A7 }1 D
Discussion: d" u7 i4 k5 d1 [* r, V# \4 [
Precocious puberty in boys is defined as secondary: e1 n. S1 w! H/ _: o% S" w
sexual development before 9 years of age.1,4* I0 C: c$ C. r# U8 V
Precocious puberty is termed as central (true) when
) {- \9 L/ ^* k6 N0 Xit is caused by the premature activation of hypo-
- h* P$ q3 w: ^ e. ?4 A. Nthalamic pituitary gonadal axis. CPP is more com-
, a! u" f) A; B2 s' k( xmon in girls than in boys.1,3 Most boys with CPP
* r- L( C5 s( c: n7 m7 Nmay have a central nervous system lesion that is( i; H0 c3 _, h i- q' }8 p0 Q
responsible for the early activation of the hypothal-: c$ A( _3 Q0 S1 C
amic pituitary gonadal axis.1-3 Thus, greater empha-
: E0 Z4 w& f+ g9 X' rsis has been given to neuroradiologic imaging in) i2 j* K8 W# K- I6 s# g$ h
boys with precocious puberty. In addition to viril-
0 r6 b4 ] M% u& }2 x" _- lization, the clinical hallmark of CPP is the symmet-4 D1 Y8 I5 _7 i1 `5 B: F8 ^, ]
rical testicular growth secondary to stimulation by
& O! J4 d* L7 Q, Bgonadotropins.1,3
$ V4 H) M$ p$ k, t: t9 _2 b2 G3 f' KGonadotropin-independent peripheral preco-
- m/ O! G9 I8 xcious puberty in boys also results from inappropriate
; V' t" |, }; i; Sandrogenic stimulation from either endogenous or
) W4 ]% U( S1 c+ E9 gexogenous sources, nonpituitary gonadotropin stim-
, F8 w8 p: {8 D' _3 @$ h6 ^, Wulation, and rare activating mutations.3 Virilizing8 F: Y6 _# W7 }0 ]
congenital adrenal hyperplasia producing excessive3 ]( |) `! n4 j, S4 i
adrenal androgens is a common cause of precocious I5 o( Z( V* }* B5 N5 I
puberty in boys.3,4
1 ^/ z/ z7 _3 c# U' S7 {6 S9 EThe most common form of congenital adrenal
/ b# W5 f% ~: G `9 Yhyperplasia is the 21-hydroxylase enzyme deficiency.. i% U2 t0 w9 ?' ^1 ?2 r
The 11-β hydroxylase deficiency may also result in+ v1 h2 D, `; s- \
excessive adrenal androgen production, and rarely,
. P0 {6 X+ W9 |$ Fan adrenal tumor may also cause adrenal androgen. M0 O: }2 ~1 U7 B
excess.1,3
- B/ h* ^0 S1 D6 q5 jat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from) b1 ?% U4 D9 A# p0 H9 M
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007, b& c( i h: l: ^6 Q' H. ?/ E
A unique entity of male-limited gonadotropin-
8 C; ?% o7 [, q# uindependent precocious puberty, which is also known' D1 `. M D9 ~0 [7 k) q* U
as testotoxicosis, may cause precocious puberty at a
" J3 U& l: p/ Fvery young age. The physical findings in these boys! I/ j" O$ e: l$ n
with this disorder are full pubertal development, B( k$ w- z. H0 l4 g8 K
including bilateral testicular growth, similar to boys- v4 ?1 |# _+ V1 t X
with CPP. The gonadotropin levels in this disorder a& b7 c/ C! c
are suppressed to prepubertal levels and do not show) z" l; t2 U/ J5 A# X$ ~0 x
pubertal response of gonadotropin after gonadotropin-
' E0 \4 G7 V+ ~* breleasing hormone stimulation. This is a sex-linked1 `" E; t* \$ G
autosomal dominant disorder that affects only# z) d8 J4 H7 j# Q4 Y
males; therefore, other male members of the family4 B$ Z/ E4 H- d, w
may have similar precocious puberty.31 D9 P( P M! K
In our patient, physical examination was incon-/ Z7 `6 A" ]/ w
sistent with true precocious puberty since his testi-
6 U! t# T2 o' Q. c5 Q7 ^6 Kcles were prepubertal in size. However, testotoxicosis
6 _7 Z1 w9 |5 owas in the differential diagnosis because his father# t# k6 H& K5 ^- v
started puberty somewhat early, and occasionally,+ b' Q6 ~7 r- }
testicular enlargement is not that evident in the' q: k) a7 h& X* u' O2 ]" z/ c" E
beginning of this process.1 In the absence of a neg-
4 C) j- ^+ ]# {) D% }! V0 I! xative initial history of androgen exposure, our
3 P6 w+ e/ i- x: @* s0 ]# qbiggest concern was virilizing adrenal hyperplasia,
! c1 z# c, _6 ?4 u& C: L* geither 21-hydroxylase deficiency or 11-β hydroxylase, g& X9 v# g% p; k, N" i( a0 H
deficiency. Those diagnoses were excluded by find-5 G8 J# D+ J/ z) d8 U8 B! k3 K2 j0 ?0 l
ing the normal level of adrenal steroids.
! M' y) N: u( D, w% y$ a' S# G4 MThe diagnosis of exogenous androgens was strongly
2 T, e) j3 r8 z% Isuspected in a follow-up visit after 4 months because
" |: c, V, v8 p5 i6 Jthe physical examination revealed the complete disap-
. z' Z% c& n* k% u( c0 i$ Gpearance of pubic hair, normal growth velocity, and
0 o G2 A3 p& C' edecreased erections. The father admitted using a testos-; D: n6 C& ?& Z
terone gel, which he concealed at first visit. He was7 z' o: @$ ~: Y e, W" s% q
using it rather frequently, twice a day. The Physicians’! G8 w2 v: i6 [0 T' t* w
Desk Reference, or package insert of this product, gel or
% g. R `; y- B+ L* T: S# tcream, cautions about dermal testosterone transfer to! }3 Z" I4 @& r/ d
unprotected females through direct skin exposure.9 g: x* @9 V5 c* h
Serum testosterone level was found to be 2 times the. n0 D3 t+ T& t3 R/ `( e9 [$ C$ U3 z
baseline value in those females who were exposed to+ ]9 l i) Q. ?! [8 a2 C3 L
even 15 minutes of direct skin contact with their male
1 x' U1 ^ F2 B! g; R# Fpartners.6 However, when a shirt covered the applica-; b1 s3 A8 r, n4 w5 Z
tion site, this testosterone transfer was prevented./ e$ v( R0 Q- |" X% P/ V
Our patient’s testosterone level was 60 ng/mL,9 g1 a9 ]' l/ @3 \5 d7 s: B2 t, V
which was clearly high. Some studies suggest that
! c, I, M: y, U; ^! Ldermal conversion of testosterone to dihydrotestos-8 @% R6 i( o! y! H. ~4 Y* ]
terone, which is a more potent metabolite, is more! A& z' {8 E% [: p
active in young children exposed to testosterone9 Z# o- K" @ Z) }8 f
exogenously7; however, we did not measure a dihy-
3 E6 M/ N. N3 w4 wdrotestosterone level in our patient. In addition to& j4 _; I/ Z f# F/ @
virilization, exposure to exogenous testosterone in
6 T8 m1 E$ H5 U$ n* E5 I6 X( uchildren results in an increase in growth velocity and
' \4 \/ ~9 J& M; M& k+ Madvanced bone age, as seen in our patient.
( K# m/ V5 T& ?. O8 N8 bThe long-term effect of androgen exposure during
1 @8 ?: c3 a# z$ \+ a5 Q s- K0 A4 Jearly childhood on pubertal development and final& F5 _/ H' p$ [4 N- w' s
adult height are not fully known and always remain
8 X4 @, k# o2 S% @5 {9 sa concern. Children treated with short-term testos-
# m B6 x# [+ D8 c* Iterone injection or topical androgen may exhibit some/ P3 L8 e2 a4 X: Q* M( b
acceleration of the skeletal maturation; however, after+ N- o5 T& m& P0 U+ j9 J$ N
cessation of treatment, the rate of bone maturation
, ] x- y2 W! \5 {7 ~ _# M* fdecelerates and gradually returns to normal.8,9; ?; q0 ~, a- X
There are conflicting reports and controversy& p' O$ Y& ?+ c5 n! q
over the effect of early androgen exposure on adult
9 [& T1 B! A: [% A( h apenile length.10,11 Some reports suggest subnormal
4 w$ {/ I) m' w+ nadult penile length, apparently because of downreg-
& J* w, }- s# U0 w, Gulation of androgen receptor number.10,12 However,
1 p+ z: K, ]9 a1 @+ WSutherland et al13 did not find a correlation between
- i; W/ }% ~! ^, j! I% t& bchildhood testosterone exposure and reduced adult
( `* P$ L u% c4 Z4 npenile length in clinical studies.) N/ o' x h& _1 [2 t9 \: X+ Q
Nonetheless, we do not believe our patient is
' {; v9 f3 W9 f( J( {going to experience any of the untoward effects from
5 S; U `3 \7 k- ]0 Z* _testosterone exposure as mentioned earlier because5 e' g7 v: v4 F j( c6 n
the exposure was not for a prolonged period of time.
7 X' d! L( S. Y2 DAlthough the bone age was advanced at the time of
7 k6 r& w" X" U' d) Qdiagnosis, the child had a normal growth velocity at! e, t' ?: I: ^- F, \4 f1 w
the follow-up visit. It is hoped that his final adult
0 ?& g- o* v( lheight will not be affected.
: h- H' h6 z& j- y8 q. _Although rarely reported, the widespread avail-
6 s& e1 o. z+ m' M% C& A5 f& }$ Tability of androgen products in our society may
]( t N; u! c! y, r( F; }indeed cause more virilization in male or female
) a2 V7 M$ _3 c D7 Achildren than one would realize. Exposure to andro-
& p7 _6 i4 t3 O6 W- sgen products must be considered and specific ques-9 Y8 ?/ b" [/ F
tioning about the use of a testosterone product or
3 s; p; H# X& B8 Bgel should be asked of the family members during
0 V# N3 Q4 a, a% ^ wthe evaluation of any children who present with vir-
: l0 _3 D+ F9 u4 H: [' ?: J5 O! hilization or peripheral precocious puberty. The diag-9 X1 N2 _! s$ ?
nosis can be established by just a few tests and by! d- O# m3 R; U
appropriate history. The inability to obtain such a" s7 r6 j- z1 E2 ?: }1 x
history, or failure to ask the specific questions, may l" _5 G( Z" O3 A
result in extensive, unnecessary, and expensive
; ?, V& g: g) W7 B: oinvestigation. The primary care physician should be
5 d8 I- \! a6 |$ h4 O7 laware of this fact, because most of these children
9 c( Z% _6 p$ }7 K Z) a" K! cmay initially present in their practice. The Physicians’5 r6 y7 ]0 g$ F) v q
Desk Reference and package insert should also put a8 r0 K5 X& I- W6 A
warning about the virilizing effect on a male or
% A8 p8 ~, E% ~$ L" Jfemale child who might come in contact with some-* V# v( G9 y6 Z: L% A' g( p8 g# x0 @
one using any of these products.3 Z: o# g) W5 m" l
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) v. P: `* w8 |8 t0 p L- b1. Styne DM. The testes: disorder of sexual differentiation
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; ^, G" ~9 n1 S* c. XEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
% I, a. \& t L+ Q6 e5 U2002: 565-628.6 I# @, T6 L' F$ ^
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious7 [. }* _8 E0 }, K# T) f. B3 [
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" _" M% u. {- V7 m# Z: `, Dareas: organic central precocious puberty. Acta Paediatr.
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Dekker Inc; 2003:211-238.$ \# i* E& V1 A
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development in a two-year-old boy induced by topical# o2 F, g1 u! C8 J9 a$ ~6 D
exposure to testosterone. Pediatrics. 1999;104:e23.# d z" b+ a5 l" U
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
( q# k6 t6 T4 P5 ~/ r2 p2 mSkeletal Development of the Hand and Wrist. 2nd ed.
4 }5 Z. n' ^/ O$ V: ~/ }( LStanford, CA: Stanford University Press; 1959.. ]& A5 f4 l+ s# ?$ C+ w! H" S
6. Physicians’ Desk Reference. Androgel 1% testosterone,: x7 r/ B# Q& R" q; [
Unimed Pharmaceutical Inc. Montvale, NJ: Medical, ~4 D+ u& F7 M" I
Economics Company, Inc; 2004:3239-3241.- c5 s4 Y# h( B& b% C1 b
7. Klugo RC, Cerny JC. Response of micropenis to topical
* n, O5 S' B) o. U9 [testosterone and gonadotropin. J Urol. 1978;119:' [: u% R$ C2 v# s- D7 \
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