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is a significant concern for physicians. Central
$ } l; p2 l0 r6 z0 B1 a7 W. u4 `precocious puberty (CPP), which is mediated; n# H% `) ^, V" n8 R& E; v7 A
through the hypothalamic pituitary gonadal axis, has) g( s' X: s0 x4 @) a# e# _
a higher incidence of organic central nervous system
: I! q. J& |6 v3 s: Flesions in boys.1,2 Virilization in boys, as manifested
j9 z9 @8 J$ S3 sby enlargement of the penis, development of pubic
) G* f" u0 i" \* Chair, and facial acne without enlargement of testi-9 t4 {4 j6 s; l% e1 E6 s2 _
cles, suggests peripheral or pseudopuberty.1-3 We
- E; H' Z* d7 creport a 16-month-old boy who presented with the
" h! O, g8 U3 k1 O. a: [6 lenlargement of the phallus and pubic hair develop-0 c- P# b4 F) X( c/ _
ment without testicular enlargement, which was due
+ A9 F$ h4 ?" r- C# [. j# rto the unintentional exposure to androgen gel used by' n1 X* i0 G5 b: G7 T2 a- X
the father. The family initially concealed this infor-& J# s0 J/ j! q' a
mation, resulting in an extensive work-up for this
$ Q! w) }+ E& F' m8 Q- q/ Z: Y: ochild. Given the widespread and easy availability of% k5 H7 C# K$ q
testosterone gel and cream, we believe this is proba-- Y5 ^% E% p9 P& @' f
bly more common than the rare case report in the
! n$ c# f/ p9 v% C; S# Vliterature.4% i( U8 _# G' Q" u$ k
Patient Report7 N& q+ S0 j$ Y/ E8 @
A 16-month-old white child was referred to the
; ?7 {+ p! s$ l' D6 qendocrine clinic by his pediatrician with the concern+ O' q5 I6 [; E; p4 k7 M
of early sexual development. His mother noticed4 `" _' Y7 H, s" ^
light colored pubic hair development when he was
2 P; J$ |1 [$ q4 B, R3 F1 TFrom the 1Division of Pediatric Endocrinology, 2University of
. f) B3 o/ L( j$ sSouth Alabama Medical Center, Mobile, Alabama.- ~2 _# d5 C/ |' L+ `1 U; o
Address correspondence to: Samar K. Bhowmick, MD, FACE,
$ Y% E4 m- D* E! w; a/ iProfessor of Pediatrics, University of South Alabama, College of1 i( e6 T# c! ?: W
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;5 m7 p4 Q2 A; P1 A
e-mail: [email protected].
. F" z- Q; s Z/ W( L# Qabout 6 to 7 months old, which progressively became
8 s0 ~+ a! Q# p7 l, E* ]* Fdarker. She was also concerned about the enlarge-9 ?" Q4 n) f% \$ R( I# F$ ?# d
ment of his penis and frequent erections. The child3 P4 L+ r" Z" i+ K0 ^# e1 M
was the product of a full-term normal delivery, with, p% k4 v) W0 W; C
a birth weight of 7 lb 14 oz, and birth length of
. I0 J5 r9 _% u4 {- V! K- r20 inches. He was breast-fed throughout the first year
) L+ ~4 h# m) D3 J8 r- v: hof life and was still receiving breast milk along with
. K8 ]/ ~" |. ~! f* u3 A8 F! b( q) Ksolid food. He had no hospitalizations or surgery, d r' e( V/ F& N4 A# Y
and his psychosocial and psychomotor development
* E& c( h$ |6 p# g* m$ ~+ fwas age appropriate.6 a6 o9 J' H6 c( p0 |7 S
The family history was remarkable for the father,
4 E' d$ _$ X9 Ywho was diagnosed with hypothyroidism at age 16,$ D* g7 r3 o# r
which was treated with thyroxine. The father’s' ~, C8 _# g* r3 c8 u. v
height was 6 feet, and he went through a somewhat
8 A, B, a r. g1 {3 searly puberty and had stopped growing by age 14.
$ W9 R& W8 H$ {% s' ^/ eThe father denied taking any other medication. The
4 k1 J# e$ k, c' R- ?child’s mother was in good health. Her menarche) v+ ~1 Q X$ Q. t) m
was at 11 years of age, and her height was at 5 feet
+ Y) Y6 Z6 o4 T W5 X5 inches. There was no other family history of pre-
) N7 @ d) P9 \9 f: k1 Q2 ucocious sexual development in the first-degree rela-- j" |/ ?6 l$ Y7 L" g3 U9 U
tives. There were no siblings.4 }! J3 m5 _% v* Z8 x
Physical Examination2 G/ \( D4 Z# y& s9 V
The physical examination revealed a very active,
8 D2 \2 Q' L$ z" yplayful, and healthy boy. The vital signs documented- @1 P( M+ V; h3 K
a blood pressure of 85/50 mm Hg, his length was
2 O" ^2 L* d. h* ]" Q0 c: t90 cm (>97th percentile), and his weight was 14.4 kg, H/ d0 [4 k. b. [7 \8 V% k5 o
(also >97th percentile). The observed yearly growth
1 X3 r5 Q/ t- `2 }6 Dvelocity was 30 cm (12 inches). The examination of5 _. Z* W, {8 {: [
the neck revealed no thyroid enlargement.
4 E7 c9 @# |3 \4 LThe genitourinary examination was remarkable for
8 R) c$ l! K' S, I' l1 j: ]/ ~enlargement of the penis, with a stretched length of
4 {3 F0 r' W1 \; ~" @2 F8 cm and a width of 2 cm. The glans penis was very well- d: e4 ^3 g7 k; ^! U2 P1 ? L; s
developed. The pubic hair was Tanner II, mostly around8 \: ^/ ]2 O, X4 N. }1 e3 d
540- m; Q) b) I4 B; p0 I
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
& L5 U! _7 i- x& Pthe base of the phallus and was dark and curled. The2 W* \' G% i2 a- u; x3 x
testicular volume was prepubertal at 2 mL each.! U+ m% ?, [' ~. J$ ^ q) T( F
The skin was moist and smooth and somewhat
" q2 s$ _7 I- B1 n+ Goily. No axillary hair was noted. There were no
( Z# {0 Q! b: [4 v9 q% tabnormal skin pigmentations or café-au-lait spots.
/ v% k& b4 S+ H5 a3 L* HNeurologic evaluation showed deep tendon reflex 2+: T4 I5 u4 `: o2 M. o
bilateral and symmetrical. There was no suggestion A* d y# I3 A2 _9 }; F% u3 L
of papilledema.
( e( |8 E3 g& t$ z3 B$ `* NLaboratory Evaluation, H8 C9 W) ]! V9 M
The bone age was consistent with 28 months by' F3 v: M& g7 K/ |2 D+ G5 Y
using the standard of Greulich and Pyle at a chrono-- s+ b$ g# l- K% A4 ^2 _/ K
logic age of 16 months (advanced).5 Chromosomal
' G j' C% q( N d4 qkaryotype was 46XY. The thyroid function test
! F0 T8 i% V, d7 Gshowed a free T4 of 1.69 ng/dL, and thyroid stimu-
8 L6 K; U# D5 e5 q% x& {! Mlating hormone level was 1.3 µIU/mL (both normal)./ e2 ?' r( B: Y/ O
The concentrations of serum electrolytes, blood
( p- r( ?; t+ {; Zurea nitrogen, creatinine, and calcium all were
; J; j- _& [+ ^8 ] Bwithin normal range for his age. The concentration" `0 C: b2 K6 W) r
of serum 17-hydroxyprogesterone was 16 ng/dL
* ]1 T; [8 p7 W3 V4 ](normal, 3 to 90 ng/dL), androstenedione was 20
: O0 v F" e3 k- @- N, Lng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-, I. O. v7 ^& V
terone was 38 ng/dL (normal, 50 to 760 ng/dL),: S7 F; F/ p$ x/ b$ T
desoxycorticosterone was 4.3 ng/dL (normal, 7 to3 f/ j( n5 b! C' n/ ~- x% J0 Z0 y
49ng/dL), 11-desoxycortisol (specific compound S)4 i! x( s) h" E2 z
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-/ j8 o1 _: X/ B/ E% y {, @" y0 a8 E
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
`2 Q+ `8 ]+ k% {5 {9 G' [testosterone was 60 ng/dL (normal <3 to 10 ng/dL),1 w9 O3 ?; e6 S$ ?
and β-human chorionic gonadotropin was less than" h' C( ], ?9 Z/ G6 `- Q6 u. [! n
5 mIU/mL (normal <5 mIU/mL). Serum follicular
$ A1 |/ W0 v" i$ l* ~( K1 ostimulating hormone and leuteinizing hormone& `, a8 q; Q2 H% n/ N- C' A
concentrations were less than 0.05 mIU/mL
- T& J( O* R& Q8 p" e8 D(prepubertal).
0 w+ ~% x! u* w6 LThe parents were notified about the laboratory) S0 X0 T# N% X5 D; l0 [
results and were informed that all of the tests were6 s0 G. u! c& |5 t9 W! \$ o
normal except the testosterone level was high. The
4 T J+ A0 i3 Y6 J/ U4 o: Mfollow-up visit was arranged within a few weeks to3 C/ s6 M5 ~5 R$ `; z! U& n
obtain testicular and abdominal sonograms; how-+ L$ y" V. U. H6 t6 W
ever, the family did not return for 4 months.7 m3 A/ a, m, _. b/ h, W4 c4 ^
Physical examination at this time revealed that the7 c. f; a& D! \+ X0 p3 J+ t$ w/ Z- t
child had grown 2.5 cm in 4 months and had gained+ P9 j2 w; m! ^
2 kg of weight. Physical examination remained
( s- t2 W9 j% s1 B0 n; C# D* R, uunchanged. Surprisingly, the pubic hair almost com-. d8 k: f7 ^+ h6 O7 p
pletely disappeared except for a few vellous hairs at
3 w3 p6 R9 |, z, q: O* ~9 j( L) N+ ]8 Vthe base of the phallus. Testicular volume was still 2
6 k/ D2 Q8 l( @! j$ c& |. X$ O) nmL, and the size of the penis remained unchanged.( C3 `5 h |: \* v& A: C- I
The mother also said that the boy was no longer hav-6 m, x# l! ?+ p. a
ing frequent erections.
1 | p9 s+ I$ ~: w; D m: S5 Z3 WBoth parents were again questioned about use of
9 I5 {1 d+ p6 Z$ e' u& o9 Q# tany ointment/creams that they may have applied to% W. ?$ y$ i! h- W9 ]
the child’s skin. This time the father admitted the
+ F9 O" ]. _3 _ f; o$ \Topical Testosterone Exposure / Bhowmick et al 541
* z0 W( c$ l% a2 @use of testosterone gel twice daily that he was apply-1 K. w& d( f4 w' P
ing over his own shoulders, chest, and back area for
7 u# @6 Q8 e# M7 b3 @; h3 Y/ ga year. The father also revealed he was embarrassed8 I& y4 U( O$ R' {( B7 [0 l, k: ?+ r
to disclose that he was using a testosterone gel pre-! u7 a. t4 y8 i
scribed by his family physician for decreased libido
8 V5 I# a! P5 ]1 D/ f3 v/ [secondary to depression.& R$ n, n- W5 B
The child slept in the same bed with parents.
) i) ~2 H" m$ jThe father would hug the baby and hold him on his
4 X A" v/ ]/ a4 I' Qchest for a considerable period of time, causing sig-7 _6 i& l6 K2 B, R; g* z
nificant bare skin contact between baby and father.6 I$ c" h7 ^+ H9 W% S
The father also admitted that after the phone call,5 }& K# T' I- ^) u
when he learned the testosterone level in the baby3 h& t- ?: b8 s. u! T
was high, he then read the product information
4 B# q5 L/ ^* o* h5 A+ w) t) k- `packet and concluded that it was most likely the rea-8 r8 X: [) r, f5 R5 ]. ~5 @" y
son for the child’s virilization. At that time, they
4 t2 N+ X6 c; x7 Cdecided to put the baby in a separate bed, and the
% _0 u; V" h/ C' g, Xfather was not hugging him with bare skin and had- E% {) I4 f1 U* G
been using protective clothing. A repeat testosterone
' o- `6 |( K5 { o5 otest was ordered, but the family did not go to the$ B! I+ \) I" e: g' A# G, N% ~
laboratory to obtain the test.4 t! X4 t! B! q
Discussion
8 r. A$ |* _. h+ o, b5 I8 f3 T! R0 aPrecocious puberty in boys is defined as secondary3 [+ p# E( O1 f
sexual development before 9 years of age.1,4
# ]6 B7 a8 g" O6 G4 ?. U" G" XPrecocious puberty is termed as central (true) when
: i# ^& |4 R. x5 [it is caused by the premature activation of hypo-
t M! r5 i4 a3 n% D. z9 I1 qthalamic pituitary gonadal axis. CPP is more com-
9 ^. Q' }' G& w, E) j0 O# ~mon in girls than in boys.1,3 Most boys with CPP
. l6 B% Q; c7 o, a* X* U5 ymay have a central nervous system lesion that is
: |* Z- G8 `: V7 R' L) Q \7 \( Fresponsible for the early activation of the hypothal-
! y8 b/ V9 F) I: y# Uamic pituitary gonadal axis.1-3 Thus, greater empha-$ w4 e& u% t' V. a7 c5 A
sis has been given to neuroradiologic imaging in
8 [) ~: f- b5 U0 }" eboys with precocious puberty. In addition to viril-
9 t$ Y' T9 W) G' Z0 gization, the clinical hallmark of CPP is the symmet-$ `) f/ X' P, H B! y% ?# O1 O& W
rical testicular growth secondary to stimulation by, F: a5 x0 c o5 U
gonadotropins.1,38 l1 E. Q4 w! z# q- H% v
Gonadotropin-independent peripheral preco-
/ \/ }" y3 B( z4 ^4 ~cious puberty in boys also results from inappropriate Y, N" x* [/ E( @
androgenic stimulation from either endogenous or
: E4 z) x( e+ H) Z( yexogenous sources, nonpituitary gonadotropin stim-4 H" U8 H' K9 q; r; Z
ulation, and rare activating mutations.3 Virilizing4 Q. C; e: c# Z* _. H$ d
congenital adrenal hyperplasia producing excessive
3 B" |( A# ^0 A. _& Z* a( tadrenal androgens is a common cause of precocious; q2 ^# B( l' t6 R4 [
puberty in boys.3,4( O/ y* f7 A) H: T
The most common form of congenital adrenal
5 S0 L, d3 \) L) R- f1 Hhyperplasia is the 21-hydroxylase enzyme deficiency.
T; I V" H# b5 fThe 11-β hydroxylase deficiency may also result in6 k# H/ @7 p" H) [5 _ M
excessive adrenal androgen production, and rarely,
( U2 j% a5 H j( i2 Aan adrenal tumor may also cause adrenal androgen
9 M% ^* \# ^* v `' \+ L" q Kexcess.1,3
6 ~2 t; ?7 J6 y2 gat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
# H" m, b! V) `# t$ ^+ P542 Clinical Pediatrics / Vol. 46, No. 6, July 2007- k- }$ |1 ?/ w. R7 z9 b* f
A unique entity of male-limited gonadotropin-/ h7 Y$ \( I5 V. p
independent precocious puberty, which is also known$ N7 v! d6 R( U2 q& A8 e- B
as testotoxicosis, may cause precocious puberty at a
8 M" }( n" S; b5 H2 f* Xvery young age. The physical findings in these boys
8 d8 C# B0 K$ `6 P) B2 Kwith this disorder are full pubertal development,
9 ] c; e# i- B0 qincluding bilateral testicular growth, similar to boys4 m4 q( @( T0 s, {; W
with CPP. The gonadotropin levels in this disorder4 q& |$ R) R* m+ {
are suppressed to prepubertal levels and do not show
& B ]+ y$ h. b' G& P. Vpubertal response of gonadotropin after gonadotropin-0 b# i# R0 b( P7 c
releasing hormone stimulation. This is a sex-linked. k# `& W6 ]# O4 M8 Y- Y% j$ \
autosomal dominant disorder that affects only$ o7 w- z+ G% l! v+ l: }5 r; v
males; therefore, other male members of the family
/ N1 Y0 g- N- O3 fmay have similar precocious puberty.3
2 k" C: a$ o6 A. y& @In our patient, physical examination was incon-3 |# \/ n( s( M7 X
sistent with true precocious puberty since his testi-
5 Q4 m! { e6 ?cles were prepubertal in size. However, testotoxicosis0 w( H N8 e7 q8 b# o [
was in the differential diagnosis because his father+ Y5 B: c& j" n4 Z% i8 S
started puberty somewhat early, and occasionally,. i: x5 R) i$ l9 }# G- |& E
testicular enlargement is not that evident in the
9 @" u& e4 u3 T9 W- n. }7 F5 sbeginning of this process.1 In the absence of a neg-8 o# G d3 s4 R
ative initial history of androgen exposure, our& B4 V8 d1 k! f) ~; g/ W$ Y& ^
biggest concern was virilizing adrenal hyperplasia,
" G! E, U0 j! F* f/ x* leither 21-hydroxylase deficiency or 11-β hydroxylase
& b4 M* r4 t3 ldeficiency. Those diagnoses were excluded by find-2 i% S1 I& D% z" z
ing the normal level of adrenal steroids.4 U5 |4 v3 j+ q! ?* @$ m. P
The diagnosis of exogenous androgens was strongly
3 Q# A1 Z: q; y9 T" z" @suspected in a follow-up visit after 4 months because4 K% C2 G/ _; S; j) b
the physical examination revealed the complete disap-
* {1 { x' a# u; @8 P+ Ypearance of pubic hair, normal growth velocity, and% h( l) K4 f7 k# e. q
decreased erections. The father admitted using a testos-
& D" T/ s# C1 o! ^. Yterone gel, which he concealed at first visit. He was
0 o: f3 `/ P* j8 E2 ^& Pusing it rather frequently, twice a day. The Physicians’6 \9 h3 c1 c. _4 i. v) V0 a/ h- a
Desk Reference, or package insert of this product, gel or3 @9 I* I, y8 }
cream, cautions about dermal testosterone transfer to5 X+ M( R$ \7 S0 D. \% ?, E
unprotected females through direct skin exposure. u+ w* H+ a* \) X/ Z, J) X
Serum testosterone level was found to be 2 times the
+ R5 k, n8 `9 [$ q3 {3 Vbaseline value in those females who were exposed to3 x a2 `! }( o- }! S* _
even 15 minutes of direct skin contact with their male
5 c' D; y; ^: h& jpartners.6 However, when a shirt covered the applica-
7 ?5 S5 P0 F) c4 C4 j9 A, Ftion site, this testosterone transfer was prevented.
( M/ T2 y* G1 v) h" S% `$ w5 y5 MOur patient’s testosterone level was 60 ng/mL,% W8 u6 b# [! N) g' }8 O* z
which was clearly high. Some studies suggest that2 Q. g, G. O- s1 s
dermal conversion of testosterone to dihydrotestos-8 M2 Z( Z% m1 N+ o2 i9 N8 O
terone, which is a more potent metabolite, is more
& T3 ]; a- W" q: U- ~. i( h) j( Qactive in young children exposed to testosterone
8 B! u# j4 N6 i: B$ P2 Hexogenously7; however, we did not measure a dihy-
5 T1 S3 O; t* b) w3 [4 [drotestosterone level in our patient. In addition to) O I; F1 ?* a& {, a7 y5 r+ N
virilization, exposure to exogenous testosterone in
6 i$ ^- e1 \! E! x2 U0 Vchildren results in an increase in growth velocity and
: s2 _8 P2 ~$ Q2 d2 xadvanced bone age, as seen in our patient.* L5 S3 G* U9 i) t
The long-term effect of androgen exposure during
: S, Q5 s4 o- Rearly childhood on pubertal development and final
6 O. V2 m& \% U1 Xadult height are not fully known and always remain! o6 c) |' ]2 f R
a concern. Children treated with short-term testos-
* v2 B" w7 f* Vterone injection or topical androgen may exhibit some6 I' h, I2 J& {* S
acceleration of the skeletal maturation; however, after. W" }+ U) U/ E3 G
cessation of treatment, the rate of bone maturation
- L' ~, n. e) M8 x, x# ]5 Wdecelerates and gradually returns to normal.8,9. a' o$ n X8 C1 X
There are conflicting reports and controversy/ F1 L5 a- I. F7 a/ N# w0 Z8 |
over the effect of early androgen exposure on adult
- o0 k/ s6 s/ y- Tpenile length.10,11 Some reports suggest subnormal. K+ O! |% F, ]
adult penile length, apparently because of downreg-% I. `6 Z, u4 m0 R
ulation of androgen receptor number.10,12 However,
3 k; z* g: B, q" T+ uSutherland et al13 did not find a correlation between
/ j# D2 \; X: [' G6 Gchildhood testosterone exposure and reduced adult( @! G5 C4 u9 ^6 \
penile length in clinical studies.
2 L5 R [. ?+ `( q+ @% zNonetheless, we do not believe our patient is
6 x4 N! m* k$ k sgoing to experience any of the untoward effects from
& H: w# N, J* M ctestosterone exposure as mentioned earlier because
) a% b( p$ \* d* t6 ^1 U+ \$ zthe exposure was not for a prolonged period of time.
4 P) T8 F) ]+ ^4 M7 I( ]0 uAlthough the bone age was advanced at the time of
+ d' p% _0 r+ C9 H! C' Q% Tdiagnosis, the child had a normal growth velocity at+ |) x% A# W& K- Z: B
the follow-up visit. It is hoped that his final adult
. F8 y0 h; ?0 Q" n9 `- @height will not be affected.9 f, R1 S2 B5 a
Although rarely reported, the widespread avail-+ u7 v" q# {5 N- ]
ability of androgen products in our society may- q- w2 l m" i _
indeed cause more virilization in male or female
2 @9 X8 {- h& ?' S2 i+ K0 }children than one would realize. Exposure to andro-
3 w$ D% j2 A0 M% Agen products must be considered and specific ques-$ |% n! g+ Q ?
tioning about the use of a testosterone product or
3 O* H1 y& }$ E; L' o+ J( Ogel should be asked of the family members during) h' y/ ~* s) x" Z
the evaluation of any children who present with vir-
5 Q- ]: f$ Y6 Y# {& oilization or peripheral precocious puberty. The diag-% U* m8 w/ L2 G
nosis can be established by just a few tests and by
/ ?( @/ I% ^4 B, Nappropriate history. The inability to obtain such a
; V! \% `) }1 a7 m: ^- S# h: E$ Shistory, or failure to ask the specific questions, may4 J6 f2 F: d( H
result in extensive, unnecessary, and expensive$ m5 ?) d3 v- a$ V" ]
investigation. The primary care physician should be
* B" v. {" g* H8 C. X$ ?aware of this fact, because most of these children
- ]: G6 [7 M6 v$ ymay initially present in their practice. The Physicians’
9 J2 [& G6 e0 H5 u, aDesk Reference and package insert should also put a2 @! T9 E6 l* p0 s1 ^ w
warning about the virilizing effect on a male or! _% W: J, ?! H/ K; S: `
female child who might come in contact with some-* K" w; I6 |) b
one using any of these products.
) Q2 I7 K i% ?2 N( P& hReferences
: P: c% d: c' ]$ D) g1. Styne DM. The testes: disorder of sexual differentiation
$ @. j9 V4 C$ c3 @! [0 pand puberty in the male. In: Sperling MA, ed. Pediatric$ [3 [) V% Z. A8 n9 `( x5 O
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
# j, f( m; u$ t3 L# ]2002: 565-628.
( {: D; ]" p8 I! K+ f1 M4 O1 v2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious. `) V: Z9 y/ O6 h H
puberty in children with tumours of the suprasellar pineal, I% r: Z+ k" s& @7 V
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Topical Testosterone Exposure / Bhowmick et al 543
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2001;90:751-756.
2 a. F% @" @; J3 {$ w6 L3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.6 l3 N2 L0 |+ [5 j
Pediatric Endocrinology. 4th ed. New York, NY: Marcel
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4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
3 ], l3 M& F. n0 d% pdevelopment in a two-year-old boy induced by topical
% g8 P7 w9 |7 n3 W# I8 |( o' O* Xexposure to testosterone. Pediatrics. 1999;104:e23.
5 ^2 d+ @( H7 R. p- V9 j1 A5. Greulich WW, Pyle SI, eds. Radiographic Atlas of, |& [1 R+ o9 P B2 G% `7 ^
Skeletal Development of the Hand and Wrist. 2nd ed.- G' s7 |( ?5 c- `
Stanford, CA: Stanford University Press; 1959.6 d. i! y* k+ z- @
6. Physicians’ Desk Reference. Androgel 1% testosterone,7 I* Q: I! s% L/ j4 O! l' K+ s
Unimed Pharmaceutical Inc. Montvale, NJ: Medical
. l) [9 w1 R& [& w; x( KEconomics Company, Inc; 2004:3239-3241.1 u% c4 s7 Z# p5 @/ Q/ f$ z
7. Klugo RC, Cerny JC. Response of micropenis to topical/ y( _! J( u0 w }! P
testosterone and gonadotropin. J Urol. 1978;119:
/ W0 E' T( R1 ~0 \. w/ l667-668.6 S6 `8 v8 V( Q/ |! J* [& d* Q
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