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is a significant concern for physicians. Central/ E+ @* {$ B! T/ A8 a4 o: W
precocious puberty (CPP), which is mediated
# Q9 b/ Q5 ^! m& ]$ i% [0 Wthrough the hypothalamic pituitary gonadal axis, has2 D. ^3 h; o# W2 \4 O5 F' l
a higher incidence of organic central nervous system# N7 Q$ J- I+ f" [; u. t& \2 G
lesions in boys.1,2 Virilization in boys, as manifested3 k/ S# t2 \( X, Q% G9 e6 @
by enlargement of the penis, development of pubic
1 G8 ]6 `3 f0 {* R$ b- T. whair, and facial acne without enlargement of testi-5 @4 F& |; n; q# e9 i+ t( t5 \
cles, suggests peripheral or pseudopuberty.1-3 We
' u3 [# \, i4 x1 {6 a2 zreport a 16-month-old boy who presented with the7 c0 j/ ^. ?2 T; H1 b$ K
enlargement of the phallus and pubic hair develop-! T! [, x0 Y C! ~
ment without testicular enlargement, which was due
( j# e2 ^5 H I$ H% Qto the unintentional exposure to androgen gel used by
9 y: A1 i6 W$ nthe father. The family initially concealed this infor-
c2 ] d* j4 L4 b/ i; Smation, resulting in an extensive work-up for this% u# B! m) k8 ]) g
child. Given the widespread and easy availability of' w, c: F, z' s
testosterone gel and cream, we believe this is proba-
- {% R+ u5 m+ C) n4 R! nbly more common than the rare case report in the# T$ `4 l3 M3 C" x3 D! V- ]
literature.4, Z! n7 q" o% B+ Y/ m
Patient Report8 L* x8 A: |/ @* S! a1 D6 ]
A 16-month-old white child was referred to the$ ~0 h7 z# ^' K( u( M- Y, x
endocrine clinic by his pediatrician with the concern
0 U' P0 c' ~. @6 D; Tof early sexual development. His mother noticed
5 L' T5 }& e3 R# ^light colored pubic hair development when he was, b+ g; r3 V4 M" q! Z7 X. Y
From the 1Division of Pediatric Endocrinology, 2University of
8 T, P# w0 G: K; W/ Y8 u& B4 @& KSouth Alabama Medical Center, Mobile, Alabama.
$ k3 ~: v( ~' \Address correspondence to: Samar K. Bhowmick, MD, FACE,5 d7 i: c$ g5 k. a' J7 w# O# W
Professor of Pediatrics, University of South Alabama, College of
/ w; o) r% f/ ]* y( i9 jMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
1 |; I0 c0 }6 E6 D4 C+ {e-mail: [email protected].
& \7 M( A2 L, _9 x; x3 b7 pabout 6 to 7 months old, which progressively became
2 O* y4 p* e# M' q' W0 gdarker. She was also concerned about the enlarge-% a; j+ P: _1 t
ment of his penis and frequent erections. The child8 R) ~, v' C6 Y* j* g* F1 P+ m& C
was the product of a full-term normal delivery, with
7 O; D3 R1 ]' y2 o6 ia birth weight of 7 lb 14 oz, and birth length of3 A2 b4 O. P6 ~# P, g" G
20 inches. He was breast-fed throughout the first year$ V$ @) J4 ~4 y
of life and was still receiving breast milk along with
" K+ }9 O" \2 asolid food. He had no hospitalizations or surgery,
, A; G8 k1 Q0 P4 I7 U3 nand his psychosocial and psychomotor development7 I# G. H3 [# `
was age appropriate.- U, D9 m, ~( T6 K2 O
The family history was remarkable for the father, r) j: l! `" H, w! Q
who was diagnosed with hypothyroidism at age 16,# S+ ]% Z* }- J# c
which was treated with thyroxine. The father’s8 U+ M j' I& F
height was 6 feet, and he went through a somewhat. E6 K* I h5 N! t5 _ A9 s' l
early puberty and had stopped growing by age 14.1 {6 [: @5 A% T0 @$ W7 M1 G
The father denied taking any other medication. The! @+ ?5 P \* N) `* L
child’s mother was in good health. Her menarche
0 ^$ d$ H: L' \was at 11 years of age, and her height was at 5 feet
8 s- \$ f. F+ C$ E5 inches. There was no other family history of pre-' M4 [% t8 p' d" e3 \ \- p
cocious sexual development in the first-degree rela-1 J+ ]6 O7 [! s/ Y7 }3 j
tives. There were no siblings." {+ ]6 _4 v+ _! [& d8 j
Physical Examination
% E2 b6 f: X3 bThe physical examination revealed a very active,5 Y1 @7 n$ ?" i$ x
playful, and healthy boy. The vital signs documented: K% O. j: n& z# U
a blood pressure of 85/50 mm Hg, his length was" W0 R J3 T8 k: W ^. x8 W' Q) C- G' t
90 cm (>97th percentile), and his weight was 14.4 kg x0 K1 C# I6 M1 {9 {* p+ ]) D7 i
(also >97th percentile). The observed yearly growth
2 I6 _9 W6 i$ b/ y1 B( Cvelocity was 30 cm (12 inches). The examination of
- D* Y2 o1 d6 q9 s! Q U! G9 Hthe neck revealed no thyroid enlargement.! S$ \2 A* h3 w& B
The genitourinary examination was remarkable for
6 p5 K9 _( L# N6 _9 ?8 A6 yenlargement of the penis, with a stretched length of I) L( a! \6 N5 T9 u, \! H
8 cm and a width of 2 cm. The glans penis was very well" r) a2 Y7 L( X1 T" @3 N
developed. The pubic hair was Tanner II, mostly around- L: v# h" v" q
5407 `- l" m9 r0 L# _2 S
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from% j- z6 A) l2 G/ ]& Y
the base of the phallus and was dark and curled. The
1 f7 Z1 I; |; p& X4 Ctesticular volume was prepubertal at 2 mL each.) m6 L. J \2 g7 r' }
The skin was moist and smooth and somewhat+ n" W8 ~( U9 N; ~
oily. No axillary hair was noted. There were no, Z2 V$ M$ q; V9 Y7 A. `
abnormal skin pigmentations or café-au-lait spots.& ` C. h$ Q2 [& r" E
Neurologic evaluation showed deep tendon reflex 2+
8 `+ k. B. l6 M" A7 g1 d" Xbilateral and symmetrical. There was no suggestion
i/ T1 f* l+ I) \4 U+ p! `of papilledema.
1 U( d8 a* h: M9 {Laboratory Evaluation
- j! m% n* F4 n) R4 k. G& NThe bone age was consistent with 28 months by: A4 Y9 R8 S4 Z0 t! D* J+ S: [) l. l, S
using the standard of Greulich and Pyle at a chrono-% H2 y* E$ y0 l' \
logic age of 16 months (advanced).5 Chromosomal1 i: V* O1 T6 ~8 Y9 w( r) g7 ]
karyotype was 46XY. The thyroid function test w- l5 s M* P
showed a free T4 of 1.69 ng/dL, and thyroid stimu-! ^% ^+ x3 e& Y4 F/ f8 O
lating hormone level was 1.3 µIU/mL (both normal).
6 u$ z% [' S6 } i. N/ O$ m* r* LThe concentrations of serum electrolytes, blood$ ?- Q- r1 C! a6 l/ m+ @
urea nitrogen, creatinine, and calcium all were5 [" c% p h+ L v
within normal range for his age. The concentration
9 H7 r: H( H1 Q% w. m3 cof serum 17-hydroxyprogesterone was 16 ng/dL+ J5 u/ {0 k9 a
(normal, 3 to 90 ng/dL), androstenedione was 20% P: V( R% Y5 J7 e/ N7 r* ]5 w
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-/ ?! C+ R0 M$ k$ S- M
terone was 38 ng/dL (normal, 50 to 760 ng/dL),5 W5 L$ l% [8 J ?. _
desoxycorticosterone was 4.3 ng/dL (normal, 7 to0 m# \8 x8 \- g7 C4 T7 U
49ng/dL), 11-desoxycortisol (specific compound S)7 x3 B1 g: K0 R* I
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
E5 z% Y* l( `! s: N- [2 a8 [tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total; w0 X/ H' v9 a) I0 e, F' [3 K: M
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
! h/ [* K, I3 s1 J* d; Cand β-human chorionic gonadotropin was less than
( H5 N2 Z4 Z6 i8 y8 O5 mIU/mL (normal <5 mIU/mL). Serum follicular( p3 K- y6 Y0 B! l" @5 {
stimulating hormone and leuteinizing hormone4 n2 o3 D% u. b3 I8 W5 z# B$ M
concentrations were less than 0.05 mIU/mL
8 N& x( |) u, W(prepubertal).) k0 W3 k; D( @ j k; g; Z, Q1 \
The parents were notified about the laboratory
7 P/ C; t5 q% ]results and were informed that all of the tests were
; e5 Y! r0 I" i7 bnormal except the testosterone level was high. The" |3 H8 s x' g* p
follow-up visit was arranged within a few weeks to
/ m& b2 b9 v' _obtain testicular and abdominal sonograms; how-
0 N; C' q0 r' Hever, the family did not return for 4 months.
Y1 Q0 {3 T$ bPhysical examination at this time revealed that the
1 R* h& V' I9 \; Ochild had grown 2.5 cm in 4 months and had gained
3 I2 l5 g' M6 J B+ x. C2 kg of weight. Physical examination remained) S$ U8 L/ l: R
unchanged. Surprisingly, the pubic hair almost com-0 A7 ]7 W8 {/ B D
pletely disappeared except for a few vellous hairs at
) S6 [' u2 X2 w, F0 Y6 othe base of the phallus. Testicular volume was still 2) S) R8 @. ]; H+ _8 O* U- j: I
mL, and the size of the penis remained unchanged.
5 D p/ b: ~- o/ F9 |5 Y" {: rThe mother also said that the boy was no longer hav-- u; J- ?, M! c% ?/ Y- r! P
ing frequent erections.
, B, |! f& l4 M K5 rBoth parents were again questioned about use of
) N5 }. ?9 K4 E3 ]" f. `any ointment/creams that they may have applied to' w7 D2 I& e8 `' o' F
the child’s skin. This time the father admitted the
1 N+ B- d) X6 x6 y; iTopical Testosterone Exposure / Bhowmick et al 541/ c v2 F v$ T( l/ ?
use of testosterone gel twice daily that he was apply-, d: p( T+ L/ q# b6 I, i& J' U; w: `
ing over his own shoulders, chest, and back area for
9 j! L/ R5 z3 D6 e% I# g+ v, Da year. The father also revealed he was embarrassed
9 S/ q V; u9 G. [to disclose that he was using a testosterone gel pre-4 Z6 b0 ~% Q# V4 u1 a( W
scribed by his family physician for decreased libido
# ]. N/ i8 `( K$ R: R+ Z" Wsecondary to depression.
- c: e. v" \" H5 h) H0 f! \The child slept in the same bed with parents.
; F( I& g4 `/ A/ TThe father would hug the baby and hold him on his) x) X$ q u9 a/ q% P% o! Z8 b$ o
chest for a considerable period of time, causing sig-6 i- q8 K' e7 k7 C( _4 F) G
nificant bare skin contact between baby and father.
! e8 Q' f- O( V+ fThe father also admitted that after the phone call,
7 b1 b5 ~; x0 J! |2 \4 S3 B6 N- |% Hwhen he learned the testosterone level in the baby
, |0 |) R. ?9 F6 j& g3 M0 dwas high, he then read the product information1 m' ]0 d3 C' k2 S! K8 W' q
packet and concluded that it was most likely the rea-
- {, K, Y& H4 Gson for the child’s virilization. At that time, they
0 \; B& {0 l' z& J: M3 ydecided to put the baby in a separate bed, and the' K! d K4 W+ x3 }& u u% }, R h
father was not hugging him with bare skin and had$ U& N0 v5 U2 i& q. ]$ j
been using protective clothing. A repeat testosterone' J5 F7 ?/ z% z
test was ordered, but the family did not go to the3 H- J) ^7 b/ [, g
laboratory to obtain the test.
^3 _0 g6 S6 @2 NDiscussion
! A" L7 \0 U: h8 e1 k6 [2 vPrecocious puberty in boys is defined as secondary
4 Z z3 _ T- k' D/ gsexual development before 9 years of age.1,4" ]- K* p& P* ^# y5 q6 |; w7 U2 }
Precocious puberty is termed as central (true) when$ v' k0 O) R0 Q, r) U) {
it is caused by the premature activation of hypo-3 O) E4 m3 l2 W1 c, l1 \
thalamic pituitary gonadal axis. CPP is more com-7 e" p, W u% \1 ~% a- M. I
mon in girls than in boys.1,3 Most boys with CPP/ _: ]0 m/ u+ A& m# H% T% n
may have a central nervous system lesion that is
% b. x, o6 U9 \0 O4 \responsible for the early activation of the hypothal-
5 u, g/ i* t; t; ~1 a, X5 ?! Q' Aamic pituitary gonadal axis.1-3 Thus, greater empha-3 c( D" ~' R. ` d- b. A+ K
sis has been given to neuroradiologic imaging in
2 z! W6 V# T* Nboys with precocious puberty. In addition to viril-
0 G; j" @4 a4 D: g! @ization, the clinical hallmark of CPP is the symmet-% l; i& [- Z, ^& q6 p' V. k# Q
rical testicular growth secondary to stimulation by
1 g. C- g/ l7 Y8 t! ngonadotropins.1,3( I" m6 a5 Y9 W. {2 T q7 B
Gonadotropin-independent peripheral preco-* H% G8 Y2 X' j) d \/ D
cious puberty in boys also results from inappropriate ?+ Z' C& K$ b6 x+ Z
androgenic stimulation from either endogenous or
9 O- i8 w6 _5 R* F9 ?/ ]exogenous sources, nonpituitary gonadotropin stim-& J: z, g/ S1 Y+ I! u
ulation, and rare activating mutations.3 Virilizing
5 z' p7 e Q1 p/ N" w1 D: H: Ocongenital adrenal hyperplasia producing excessive. h) @0 K5 H# Z! c' V7 O: u5 x
adrenal androgens is a common cause of precocious) D+ Y+ I. F# I' {
puberty in boys.3,42 \: [! W+ W; l
The most common form of congenital adrenal
! p' ]& h( B" R6 J) ?# Q% [; ]hyperplasia is the 21-hydroxylase enzyme deficiency.
- V8 t8 r0 x4 W) G, s( yThe 11-β hydroxylase deficiency may also result in
' ]+ a- U4 ?1 g: B- ~excessive adrenal androgen production, and rarely,
0 p/ d/ [7 r, \; N; S j4 C1 Ban adrenal tumor may also cause adrenal androgen
& e1 N, r! s! _/ F5 W+ bexcess.1,3
5 x! {# w- H& c6 S$ yat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from3 Q& \# J4 L0 M9 w
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
3 M% l |. Q5 K! r: V8 ]. u6 K# \+ ?A unique entity of male-limited gonadotropin-
1 d6 q, D' t8 t/ U' I$ Aindependent precocious puberty, which is also known
4 t. o9 H+ j" m5 q+ D. g& kas testotoxicosis, may cause precocious puberty at a1 z. h0 P: k2 z
very young age. The physical findings in these boys6 S: B5 ], j* V i+ G P
with this disorder are full pubertal development,
( C& P2 c- P' R/ p! c0 W# _# C; s/ P* vincluding bilateral testicular growth, similar to boys$ Q6 e* D% J2 I" _* D
with CPP. The gonadotropin levels in this disorder; F Y( t; A) U
are suppressed to prepubertal levels and do not show
" d% I% S) H0 Apubertal response of gonadotropin after gonadotropin-
- l3 J, K1 b" K; Vreleasing hormone stimulation. This is a sex-linked2 p" @+ o1 Y2 ~
autosomal dominant disorder that affects only
' n; H- e0 \# {males; therefore, other male members of the family& w, p) x' ~, c4 X/ k) G+ [
may have similar precocious puberty.3
0 z* O8 I# a8 m/ x m2 q! V1 dIn our patient, physical examination was incon-
& X c/ v4 ?1 F) ^& Q# zsistent with true precocious puberty since his testi-; |0 R" u1 ~2 p+ L
cles were prepubertal in size. However, testotoxicosis
S% ?2 |/ n I2 W+ owas in the differential diagnosis because his father
! L7 f M3 C8 D+ i0 Ostarted puberty somewhat early, and occasionally,
3 I$ |9 ?& y5 c$ O" htesticular enlargement is not that evident in the6 G) P9 K4 a, D6 T: Z; c% n
beginning of this process.1 In the absence of a neg-2 A+ C; v# q% M; b8 e& p
ative initial history of androgen exposure, our
+ Y9 q4 g/ Z' L7 Jbiggest concern was virilizing adrenal hyperplasia,
! A- E3 q+ j7 Z7 s6 R6 k& leither 21-hydroxylase deficiency or 11-β hydroxylase
+ k1 \& b% w8 W# K6 `9 E# ?0 j0 Fdeficiency. Those diagnoses were excluded by find-
1 }/ X4 N% ?6 L1 H8 T; |. s4 Oing the normal level of adrenal steroids.
9 H! |- {: V; c& ~4 X ZThe diagnosis of exogenous androgens was strongly
8 Z! l5 l1 `: y5 z( wsuspected in a follow-up visit after 4 months because/ R5 K! ]" w. e7 O5 T! {
the physical examination revealed the complete disap-
2 s' e9 D; P# P- @pearance of pubic hair, normal growth velocity, and
. N* u7 ], S. Z: j% W: bdecreased erections. The father admitted using a testos-( k) B0 K2 T) b' V
terone gel, which he concealed at first visit. He was
2 [: g+ _* T* h6 P# y# susing it rather frequently, twice a day. The Physicians’* O4 M/ v2 F% {* q1 B
Desk Reference, or package insert of this product, gel or- }" S( a. z# Y) s8 L7 `
cream, cautions about dermal testosterone transfer to
& s' O$ L1 _: m2 N7 U, ounprotected females through direct skin exposure.3 x, ?7 T8 U' o. K; ?% J5 e0 g5 e7 B, G. E
Serum testosterone level was found to be 2 times the
& E6 S s$ F! }, @baseline value in those females who were exposed to
5 p/ t; b" I4 J( Oeven 15 minutes of direct skin contact with their male h- U4 }/ ?8 Z6 y/ P3 n
partners.6 However, when a shirt covered the applica-3 m3 W; [0 L6 v; O, f
tion site, this testosterone transfer was prevented.
# f$ h1 ~ @5 x9 t' P; T U5 POur patient’s testosterone level was 60 ng/mL,
* \/ ~/ M% P; d0 U5 a- G% a1 P; Iwhich was clearly high. Some studies suggest that
& d6 k) J" G8 S3 Vdermal conversion of testosterone to dihydrotestos-
) V/ h8 i$ ^/ Z3 w( pterone, which is a more potent metabolite, is more( z4 H6 @' R- O" x; i" g
active in young children exposed to testosterone
) \+ X6 c8 t$ g6 {* Qexogenously7; however, we did not measure a dihy-* l6 l1 F* W8 }0 s( @8 H9 Z
drotestosterone level in our patient. In addition to
' v- k s, R9 t8 L( H3 d# p% Uvirilization, exposure to exogenous testosterone in
5 f+ W" j# |2 c: \children results in an increase in growth velocity and
0 {) q0 t0 C6 fadvanced bone age, as seen in our patient. ]) n: J. Z' J9 s! b: [0 `+ Q
The long-term effect of androgen exposure during
# u4 Q0 B6 d# N9 |early childhood on pubertal development and final6 Z3 G8 t) u7 W
adult height are not fully known and always remain
; G) ?- r, p& n$ fa concern. Children treated with short-term testos-% K/ D2 c u8 \
terone injection or topical androgen may exhibit some
$ M3 a% b7 W8 Q( t) Yacceleration of the skeletal maturation; however, after
" R2 T# ^$ K9 O: B+ e4 ]cessation of treatment, the rate of bone maturation
3 l4 m9 o' L# o( xdecelerates and gradually returns to normal.8,9" K; }5 {5 W' D: c$ G, P7 _
There are conflicting reports and controversy, r2 F- c2 H q% z4 i! ]8 w0 h
over the effect of early androgen exposure on adult
5 H% f( F- Y$ \( X/ ]& npenile length.10,11 Some reports suggest subnormal
# v3 [0 T6 X8 o( a& }0 |adult penile length, apparently because of downreg-' Z" t7 J% m0 y/ N+ A ?1 Z: M
ulation of androgen receptor number.10,12 However,
: {1 l' t/ `6 k! ~" `Sutherland et al13 did not find a correlation between- p' k# Z2 x3 E" x6 m$ k: X& P, s4 w
childhood testosterone exposure and reduced adult
" Y, q2 @: W/ e& y wpenile length in clinical studies., A3 X1 ?0 f$ ^, Y- ^" ~9 ~2 T' e+ J
Nonetheless, we do not believe our patient is
6 Q s. E! y6 P% |! x1 Cgoing to experience any of the untoward effects from
& n# f F* ?* ^/ j6 @; s! ~0 dtestosterone exposure as mentioned earlier because
6 s" H, P( N3 a6 f7 g5 Z2 @1 I/ Zthe exposure was not for a prolonged period of time.
* w, t* P- M1 \4 PAlthough the bone age was advanced at the time of
4 _' b) k b8 n1 I5 vdiagnosis, the child had a normal growth velocity at
1 D+ ~/ _( {. g3 ~# J0 wthe follow-up visit. It is hoped that his final adult
$ ~$ `: B1 j3 J/ ~9 `! Iheight will not be affected.3 N2 ^# U9 `# }
Although rarely reported, the widespread avail-
+ O; Q4 _. s. @$ Lability of androgen products in our society may: f; b7 g% A* r5 \ ?
indeed cause more virilization in male or female
. U$ n4 v% x$ u$ |4 |# ~3 x4 r* _children than one would realize. Exposure to andro-
& g1 l) f# e6 \( x! R1 Igen products must be considered and specific ques-' c) U$ H2 l: h: N7 @
tioning about the use of a testosterone product or
5 u0 R7 { ~* \5 w/ [2 V# ]- y5 Pgel should be asked of the family members during" d% }7 H1 z" q% g! w, W8 Z
the evaluation of any children who present with vir-
, N, I5 L+ | H, k# K Eilization or peripheral precocious puberty. The diag-
, t, [4 v1 k+ F3 y5 x5 Bnosis can be established by just a few tests and by
- }3 A. \8 g5 k% b1 v" s- Xappropriate history. The inability to obtain such a7 H' T$ n3 K+ E, ~4 W& m
history, or failure to ask the specific questions, may( k2 q( `$ P- ] ^6 i
result in extensive, unnecessary, and expensive
2 Y2 I* t& c j4 einvestigation. The primary care physician should be
8 x5 _) R! W& h; ?. qaware of this fact, because most of these children8 [9 H! d! c1 o1 f0 ^! x; ?" n
may initially present in their practice. The Physicians’
& q1 i& c- ~& O/ X% }: dDesk Reference and package insert should also put a
$ n, L$ r' z) Dwarning about the virilizing effect on a male or
3 M1 P) T2 j7 p. D2 Y0 dfemale child who might come in contact with some-; t7 q: c; i8 t5 h' o: Q: ]3 t. f& b
one using any of these products.5 D( Z+ m' ?8 i) j1 w
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Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;9 h" I0 s G" K0 _1 O7 Y
2002: 565-628.: p v# w" }$ S, J5 Y( V) o, p
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% K# X- g$ z$ R6 c, e% _areas: organic central precocious puberty. Acta Paediatr.
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Dekker Inc; 2003:211-238.
! y3 e7 h( y6 D2 M* G! E4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
+ q ?2 [& \+ U: _* Zdevelopment in a two-year-old boy induced by topical
2 s3 u' U1 K* J* dexposure to testosterone. Pediatrics. 1999;104:e23." [0 V5 F; q: m+ ^$ h
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
' c( }( t: T. VSkeletal Development of the Hand and Wrist. 2nd ed.
2 i; D% k9 e5 R0 IStanford, CA: Stanford University Press; 1959.6 t1 I% V: x1 M, c
6. Physicians’ Desk Reference. Androgel 1% testosterone,- i4 O4 G7 s4 @* Z( Z
Unimed Pharmaceutical Inc. Montvale, NJ: Medical
* L7 Z) [2 P8 Z- J4 A# r" |Economics Company, Inc; 2004:3239-3241.9 x+ A: H( d p b ]
7. Klugo RC, Cerny JC. Response of micropenis to topical
1 i" v/ k ^' K! I1 Qtestosterone and gonadotropin. J Urol. 1978;119:
: Y- {' f8 R' r3 G9 C( n5 g667-668.9 f) O. y) _* C
8. Guthrie RD, Smith DW, Graham CB. Testosterone
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