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is a significant concern for physicians. Central
, \0 O% V1 `+ W" a- G# Xprecocious puberty (CPP), which is mediated
$ P' u3 z5 |3 L7 Q, G2 A5 Hthrough the hypothalamic pituitary gonadal axis, has+ G" {/ y# `# K' K+ Q
a higher incidence of organic central nervous system2 @+ F- {4 N* t5 Z9 ?
lesions in boys.1,2 Virilization in boys, as manifested' b2 B) ^4 O; V/ S, o7 y2 m S
by enlargement of the penis, development of pubic3 [+ Y) _ R1 C! v
hair, and facial acne without enlargement of testi-1 D5 [0 H b/ O" Z" k; f$ ]
cles, suggests peripheral or pseudopuberty.1-3 We& p- o8 P0 V: W" b
report a 16-month-old boy who presented with the3 j& F; Y: c$ p8 T8 c0 Z
enlargement of the phallus and pubic hair develop-5 }, h: `8 V) u1 \2 g& l) l
ment without testicular enlargement, which was due
# n- K4 X: X# O$ Pto the unintentional exposure to androgen gel used by
* u4 m7 G5 G4 k: B3 ] P) J! s5 othe father. The family initially concealed this infor-: S6 y7 j5 {- r8 d8 Y1 H
mation, resulting in an extensive work-up for this
2 N( O9 P- j' I2 Q% z. h$ Jchild. Given the widespread and easy availability of( @! o& _6 T- } g3 [
testosterone gel and cream, we believe this is proba-
0 M7 i/ A2 V6 Lbly more common than the rare case report in the
0 d2 P1 f# R4 a4 `: f# s, Mliterature.46 g- S) u f$ i. [( m D3 W% L3 _
Patient Report
; s2 i2 d# t& i; V- K, x& PA 16-month-old white child was referred to the% q( L0 L2 O0 @. z, D
endocrine clinic by his pediatrician with the concern. U2 ^0 t3 X0 w' d! u+ d d
of early sexual development. His mother noticed
; ^- y. T4 ^; a! D7 |light colored pubic hair development when he was& g, j% E8 X) c# w
From the 1Division of Pediatric Endocrinology, 2University of3 Q9 k& t$ W6 L$ P1 C+ o3 X( c
South Alabama Medical Center, Mobile, Alabama.; u1 U$ R' K2 N. H0 j& h7 X
Address correspondence to: Samar K. Bhowmick, MD, FACE,( x; l% M9 |1 @8 v
Professor of Pediatrics, University of South Alabama, College of( M1 y% M5 |9 C
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;5 v- s) y" @5 f6 e8 H+ v
e-mail: [email protected].
$ |4 K+ f2 V5 {: `- F7 g: yabout 6 to 7 months old, which progressively became0 y) x- q$ Q' `" f! o e
darker. She was also concerned about the enlarge-
% R) g+ o( n7 I: Z* l" }5 Y- I3 Jment of his penis and frequent erections. The child( G) r+ t5 M7 L3 O. |7 k
was the product of a full-term normal delivery, with
4 M. W+ O( o, y; K/ Ya birth weight of 7 lb 14 oz, and birth length of" Z" ^4 t* E# r* F* @
20 inches. He was breast-fed throughout the first year
! C2 S }6 R: F$ |+ w& J: u Vof life and was still receiving breast milk along with2 ^8 J/ _4 z/ `# X
solid food. He had no hospitalizations or surgery,3 i/ R9 v H2 \/ P& h5 I
and his psychosocial and psychomotor development
& ~/ |' Y w2 ywas age appropriate./ M& n9 N# s+ Q4 @/ G
The family history was remarkable for the father,
, K0 a: D) J C3 T( @$ Ywho was diagnosed with hypothyroidism at age 16,
' s0 q8 Q! I1 Z% rwhich was treated with thyroxine. The father’s* T u0 g+ K( L! v
height was 6 feet, and he went through a somewhat% R7 `# L0 ?" o1 L9 R; J% t
early puberty and had stopped growing by age 14.
& P, G+ O% \6 |, q+ mThe father denied taking any other medication. The4 r# Y2 L7 A" x
child’s mother was in good health. Her menarche
! {+ M. h/ r0 L$ X$ X- twas at 11 years of age, and her height was at 5 feet
/ U y! ~6 c6 A2 E! b5 inches. There was no other family history of pre-
1 m( i! T+ g$ ?* K: ]4 F3 L: p4 Ccocious sexual development in the first-degree rela-
/ L2 }) e! g ~3 i$ t: Y2 W, ^tives. There were no siblings.
$ j3 ]! s* B0 x- | zPhysical Examination
9 r# \# W" [+ g1 P1 Z" t& r v' eThe physical examination revealed a very active,8 M1 x/ r# n$ r& _* w6 K. Y, \: U4 `* D
playful, and healthy boy. The vital signs documented
: L! a8 X5 \# w3 sa blood pressure of 85/50 mm Hg, his length was) D8 T9 Q6 q, [
90 cm (>97th percentile), and his weight was 14.4 kg2 T* d. \7 s+ _- z
(also >97th percentile). The observed yearly growth! S0 ]1 j) Y* h5 D- y- j" w
velocity was 30 cm (12 inches). The examination of0 P$ K( V. X {9 |; ^
the neck revealed no thyroid enlargement.
8 P$ T0 z2 m( j" O3 ^ e2 IThe genitourinary examination was remarkable for, G3 T$ S6 F1 H
enlargement of the penis, with a stretched length of
5 A2 A; ^0 P \6 I6 J" K k1 S* q8 cm and a width of 2 cm. The glans penis was very well6 z! ^5 e2 g7 B
developed. The pubic hair was Tanner II, mostly around. r; u2 ~. [; Q3 ?5 j! H
540
6 t, J+ J8 w* [, O6 I( l5 vat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
! j9 C/ ^9 b4 N, @the base of the phallus and was dark and curled. The, [& I$ t9 z" V& J/ n6 }+ s: J8 Y' ]
testicular volume was prepubertal at 2 mL each., ]5 _5 P/ p/ D ^$ z6 _5 |
The skin was moist and smooth and somewhat0 }, r. M* ~+ P- }% _( M
oily. No axillary hair was noted. There were no
# s! Q ]8 w+ U2 K+ z6 i6 \abnormal skin pigmentations or café-au-lait spots.
+ ^$ @1 X/ S% y: J' RNeurologic evaluation showed deep tendon reflex 2+
' J5 O1 {+ B" q( B7 E, Xbilateral and symmetrical. There was no suggestion
0 u8 P. n$ I4 T! o& f& f7 ?" fof papilledema.2 W6 |( m' r9 `
Laboratory Evaluation
) \* j7 t& O4 ?$ y, k+ W/ k0 |' PThe bone age was consistent with 28 months by$ D7 B5 L' x& U' t, u
using the standard of Greulich and Pyle at a chrono-
" i, o0 V, O8 g$ B# e4 ]& slogic age of 16 months (advanced).5 Chromosomal
: S8 |! i- i# n4 y2 }karyotype was 46XY. The thyroid function test! M1 f4 e2 }. O: \) y
showed a free T4 of 1.69 ng/dL, and thyroid stimu-4 {6 P5 R) ?# `' M2 P% s4 T8 {. x
lating hormone level was 1.3 µIU/mL (both normal).: k, E* ]% e5 ^, E
The concentrations of serum electrolytes, blood* N% T2 C7 k2 e4 L" g
urea nitrogen, creatinine, and calcium all were
+ A0 ?4 l+ z% K( V7 X* Twithin normal range for his age. The concentration/ P# A+ X3 n2 V8 [- k* }
of serum 17-hydroxyprogesterone was 16 ng/dL% F+ D0 W! B" b& F6 X8 }% A# W5 y
(normal, 3 to 90 ng/dL), androstenedione was 20( R5 \& n; @ z' C
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
" z: M! Y9 H( @terone was 38 ng/dL (normal, 50 to 760 ng/dL),
! T w" t* @! \desoxycorticosterone was 4.3 ng/dL (normal, 7 to
4 D) i2 O& B H' [! r6 B1 W& w49ng/dL), 11-desoxycortisol (specific compound S)* ^* T5 F! s! L3 d1 O* O7 q
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
# b0 s0 G# q8 ~0 [tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total4 F' q; ^ S! P
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
4 c& A7 i l, x G. J9 H9 Jand β-human chorionic gonadotropin was less than
. s; f. l1 l" B$ x4 G6 K4 E7 t5 mIU/mL (normal <5 mIU/mL). Serum follicular
! {. J4 Z+ S) w) b' istimulating hormone and leuteinizing hormone1 G& `8 R L% } c, u; \5 j) @" r
concentrations were less than 0.05 mIU/mL- _* o9 a2 i0 K, | J$ y4 ]; [$ P
(prepubertal).
. ?9 K; O+ X9 z3 {/ oThe parents were notified about the laboratory
! P' h# K# q0 S+ g* a% uresults and were informed that all of the tests were
! d* B k1 w5 ]- g9 |! [+ Xnormal except the testosterone level was high. The, P. G9 G a& R; D
follow-up visit was arranged within a few weeks to
/ d5 U3 h# {9 C8 ?8 ?6 f, fobtain testicular and abdominal sonograms; how-3 d4 g/ T+ _/ V6 b. j& ]
ever, the family did not return for 4 months.* D6 H# N# \) U( O* W* j
Physical examination at this time revealed that the
7 Q$ x( o( U' V. Ichild had grown 2.5 cm in 4 months and had gained( N7 f9 U* E7 h2 y" t7 V9 K
2 kg of weight. Physical examination remained
0 `7 g# A# v5 R ~, punchanged. Surprisingly, the pubic hair almost com-
* g# |2 Y. K$ Y) ^pletely disappeared except for a few vellous hairs at
0 D9 ^" u4 X3 ~1 Z1 `5 qthe base of the phallus. Testicular volume was still 2+ I- o9 Y' B% l5 A6 f# J
mL, and the size of the penis remained unchanged.
% W( k% T1 L3 q" _2 F' UThe mother also said that the boy was no longer hav-9 q' K9 a) u# {& H# G
ing frequent erections.4 w7 \; b$ E y# p$ E& [
Both parents were again questioned about use of
6 D& X6 n) i+ l9 _5 ]any ointment/creams that they may have applied to
" ?8 m( o: P1 z, z1 L- ]" e+ tthe child’s skin. This time the father admitted the
: c1 E7 V- |8 `$ h0 Y$ ~1 ETopical Testosterone Exposure / Bhowmick et al 541
) u6 Z8 Z/ M; W) a3 q' H8 \8 Yuse of testosterone gel twice daily that he was apply-
* l9 p/ A0 \1 `( T( |3 Q [ing over his own shoulders, chest, and back area for
' k3 h# ^' ` N7 s! } ~% J" l" n/ Ba year. The father also revealed he was embarrassed
. f7 X( {3 f0 n. e' _8 hto disclose that he was using a testosterone gel pre-
. f. J$ g8 N9 H# [/ `scribed by his family physician for decreased libido( V# Y0 x L$ t9 b5 d0 A4 J
secondary to depression.; _- L# m$ j! |
The child slept in the same bed with parents.
1 B, X, E, K. e: C2 v4 ` |3 |; hThe father would hug the baby and hold him on his
2 C# ~& r' N; U5 Tchest for a considerable period of time, causing sig-, v4 i% C! t4 J
nificant bare skin contact between baby and father.8 \: y' J9 @: J2 M1 Q D
The father also admitted that after the phone call,
/ C3 c$ I" R+ J4 v" E6 cwhen he learned the testosterone level in the baby
* D2 ~! i8 R% }5 X& j! Zwas high, he then read the product information+ u% S6 K) f! k# [: I
packet and concluded that it was most likely the rea-
' g6 W3 C; A# y2 e T/ Hson for the child’s virilization. At that time, they
' E2 ?7 V4 Y9 Q; }, I. g2 e& R4 tdecided to put the baby in a separate bed, and the9 W S+ Q7 v/ X
father was not hugging him with bare skin and had
' n) V' F4 X0 a0 A! j. Ubeen using protective clothing. A repeat testosterone% [, n5 W, m: u7 ]
test was ordered, but the family did not go to the
% G; u3 V1 K* M' Z1 i, }laboratory to obtain the test.
/ s8 v! d6 b% h' ?# TDiscussion
3 P" C' n7 i- q6 G/ v4 fPrecocious puberty in boys is defined as secondary
$ t) Z# v4 N, a6 n- ^0 D; }sexual development before 9 years of age.1,49 b' T2 \$ k" n' y: O+ i
Precocious puberty is termed as central (true) when
, H* d+ p" z0 @it is caused by the premature activation of hypo-
7 ]. M7 A- q) D0 v2 ithalamic pituitary gonadal axis. CPP is more com-
" z2 X7 G- Z6 w* s4 umon in girls than in boys.1,3 Most boys with CPP
( i7 Q) `5 X4 ^, D7 Jmay have a central nervous system lesion that is5 ?6 K$ F0 |# @% Y; h% I- g5 m
responsible for the early activation of the hypothal-
+ W2 c- s& v2 W. P3 @. j L Mamic pituitary gonadal axis.1-3 Thus, greater empha-5 c" b/ S4 z6 U
sis has been given to neuroradiologic imaging in
0 d7 t3 \. `2 h1 K$ {boys with precocious puberty. In addition to viril-
; r: t' G* b8 X9 k0 U* x, q( `- v: @ization, the clinical hallmark of CPP is the symmet-& W3 y1 M, g4 p
rical testicular growth secondary to stimulation by
; J- ^8 N5 w) C4 \0 G7 Vgonadotropins.1,3
0 B: `9 T4 ~. ^; |1 v7 uGonadotropin-independent peripheral preco-) i: j& F9 k: K' C/ o( z) ~' n
cious puberty in boys also results from inappropriate! f7 }. E; |* {4 [$ f
androgenic stimulation from either endogenous or
; j! r$ @/ y$ H. h0 F9 k$ r4 y* V& zexogenous sources, nonpituitary gonadotropin stim-' T! s1 A6 n% Z) T2 C) \4 m# [' O
ulation, and rare activating mutations.3 Virilizing& M2 u) P9 y5 j) F
congenital adrenal hyperplasia producing excessive
" d8 t- _2 p2 S% D' sadrenal androgens is a common cause of precocious: u1 I7 ]9 _# Y: T. u A8 `
puberty in boys.3,4
+ Q# P7 _% i8 J# z7 sThe most common form of congenital adrenal
$ }, W) H# g1 m3 ~8 D# p4 a( bhyperplasia is the 21-hydroxylase enzyme deficiency.
, l8 @ G: |7 ?1 a6 I+ O- N- vThe 11-β hydroxylase deficiency may also result in
/ N5 z. R. [9 ]7 u* x* G9 \excessive adrenal androgen production, and rarely,* Q ^0 }$ X1 g/ `! D
an adrenal tumor may also cause adrenal androgen8 d, d, C4 {& g# W# a$ B
excess.1,32 W# v, l: q3 X+ W$ Y9 }- `
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
; Q/ c2 I; \) ^542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
+ M, Y6 h. o9 _; S9 hA unique entity of male-limited gonadotropin-
) Y/ e5 }1 I7 \. C& x% l Y' \independent precocious puberty, which is also known0 S& j; _- H& z
as testotoxicosis, may cause precocious puberty at a
6 `( N1 N y5 Q2 Q. E8 Lvery young age. The physical findings in these boys
' k' T: o6 u, [5 D Swith this disorder are full pubertal development,! _5 W* R4 Y& N. T% {
including bilateral testicular growth, similar to boys! i$ e& i5 A( h' |2 e9 m0 j/ u; Q' [
with CPP. The gonadotropin levels in this disorder0 t/ r0 d" ?: D" _# i$ l& [4 l# W& w
are suppressed to prepubertal levels and do not show% {) C: V2 X9 |
pubertal response of gonadotropin after gonadotropin-$ E, }/ a7 Y/ ?2 |6 B/ S! f
releasing hormone stimulation. This is a sex-linked
; D: t2 _3 h' u% Z6 Cautosomal dominant disorder that affects only( @6 I3 I& G5 A% w9 |" D3 I+ F* r
males; therefore, other male members of the family' W* T5 b3 P3 }& w5 G2 f6 v+ c
may have similar precocious puberty.3% C% c. y. o/ j
In our patient, physical examination was incon- T/ L5 l8 P2 _# Z
sistent with true precocious puberty since his testi-8 [$ R* R* u1 i5 u* n; R4 D
cles were prepubertal in size. However, testotoxicosis
% V% u5 Z4 O) Ywas in the differential diagnosis because his father; ^% |8 K& N8 B
started puberty somewhat early, and occasionally,
6 u* g' F- I. N- Y9 ttesticular enlargement is not that evident in the
4 F$ S- \! P- Hbeginning of this process.1 In the absence of a neg-
- R; k( S: m3 D: R6 _ative initial history of androgen exposure, our6 g+ @& ? N" D1 C# Z% u. }) L, O
biggest concern was virilizing adrenal hyperplasia,6 e" n# u/ _# D: R3 Q# V c9 k
either 21-hydroxylase deficiency or 11-β hydroxylase, `2 u% E7 Q/ ]. Z- W5 E, Y: ]- A
deficiency. Those diagnoses were excluded by find-
2 O5 S: n$ P; \7 P: T4 o8 }3 y+ H* v jing the normal level of adrenal steroids., W. d: \2 O3 C# B V) w
The diagnosis of exogenous androgens was strongly
/ [1 `( x$ C" z3 |8 }, dsuspected in a follow-up visit after 4 months because
+ ?4 a2 B# x) s1 W1 w" q- }the physical examination revealed the complete disap-4 t1 g! \8 i& C( @4 G4 s1 H
pearance of pubic hair, normal growth velocity, and9 [/ ]1 A o8 P4 D4 O
decreased erections. The father admitted using a testos-
% O0 P- s* p4 D: Y3 C; M5 R- o; rterone gel, which he concealed at first visit. He was* h7 R* C/ s" Q/ y7 o# h2 D: M
using it rather frequently, twice a day. The Physicians’
8 O! x8 x4 f% h! h S6 cDesk Reference, or package insert of this product, gel or8 h/ L* H# d0 i. |
cream, cautions about dermal testosterone transfer to
9 T+ e9 z6 b4 }7 `( vunprotected females through direct skin exposure., O' _) X. U' y
Serum testosterone level was found to be 2 times the
( Z" G9 }* S) }5 Fbaseline value in those females who were exposed to0 C) ?( ~) c- \; N% \ ^9 ^- P
even 15 minutes of direct skin contact with their male
) D: G; W! W) T) C7 ~2 q epartners.6 However, when a shirt covered the applica-
6 q4 t1 q5 K$ ztion site, this testosterone transfer was prevented./ R$ r$ V" T* V1 i- M& s( B$ O
Our patient’s testosterone level was 60 ng/mL,! X# v+ l" {) \ \' {
which was clearly high. Some studies suggest that" z* ]( _5 N0 O/ p* l+ \+ }/ L
dermal conversion of testosterone to dihydrotestos-8 j/ {4 m. }2 M
terone, which is a more potent metabolite, is more
( w7 f* ?) H5 {9 n( ?- Oactive in young children exposed to testosterone
H# F2 E% ]# N. t/ I# [7 h1 hexogenously7; however, we did not measure a dihy-" d% S. K1 ~1 R6 u8 [. k1 Y
drotestosterone level in our patient. In addition to
- \* ?- C; C) E3 G+ m. I0 lvirilization, exposure to exogenous testosterone in
3 {" ?! }0 ]2 U n+ cchildren results in an increase in growth velocity and Z8 S5 D2 r1 F/ z" u0 f$ J* ]
advanced bone age, as seen in our patient.
+ t+ l. i V/ O8 I* L( RThe long-term effect of androgen exposure during
/ v, r9 l; n/ e7 p4 T$ o" Iearly childhood on pubertal development and final
2 h6 d/ Y5 J! ]- C' N. R8 Jadult height are not fully known and always remain: Q' u5 f8 n! B% `7 K% F
a concern. Children treated with short-term testos-$ i G5 p. a' o# V4 a7 w5 X
terone injection or topical androgen may exhibit some5 N' m0 n5 |- \' V
acceleration of the skeletal maturation; however, after4 c0 }! Z$ Y+ v0 r0 q N7 `8 A
cessation of treatment, the rate of bone maturation
* ? P- [1 [7 e! idecelerates and gradually returns to normal.8,9
7 q+ s' p0 J4 P0 b5 H, Z" OThere are conflicting reports and controversy
5 {* {9 ~% J6 d+ Q7 zover the effect of early androgen exposure on adult9 l5 B! P# ~4 |" a$ g9 B
penile length.10,11 Some reports suggest subnormal7 Z' u( t- j) }7 E
adult penile length, apparently because of downreg-
; c, d; W( U0 c$ q1 Yulation of androgen receptor number.10,12 However,* o1 A* ~% F& F8 P
Sutherland et al13 did not find a correlation between
4 i- ?) m6 I: ^* Z5 _( Y; mchildhood testosterone exposure and reduced adult% k+ J& m& f) s, K7 R
penile length in clinical studies.
1 Y: D# L( G; ENonetheless, we do not believe our patient is
- O' t. i2 p2 }4 ~) _* j' G: jgoing to experience any of the untoward effects from# j/ `/ b% E2 M* x+ W. R( F( T; o
testosterone exposure as mentioned earlier because: M9 o# ^( i& D( C F# Z
the exposure was not for a prolonged period of time.
6 q# P7 R8 k' j! s% ^. O! mAlthough the bone age was advanced at the time of
$ G: V- n8 @9 R$ z9 j. t# D+ V6 |diagnosis, the child had a normal growth velocity at
+ q8 L9 s4 w- m4 l9 K4 p8 uthe follow-up visit. It is hoped that his final adult
! e) `+ }7 X: f2 Fheight will not be affected., `3 u4 y+ u, r5 }* }9 r c# r; l1 N" A
Although rarely reported, the widespread avail-5 W- ^$ O% j) j' T, |
ability of androgen products in our society may( r+ q, A X. O- N2 x- X/ T7 ?4 x9 c
indeed cause more virilization in male or female
Q C; q) w) a m7 zchildren than one would realize. Exposure to andro-" @$ K) M5 d& Y
gen products must be considered and specific ques-# I5 Z$ @* S+ }0 N/ R
tioning about the use of a testosterone product or
; X+ x# V4 o' \0 I5 y2 n' Z; P7 lgel should be asked of the family members during$ p6 ^/ ?- C0 x4 w- e: H( s
the evaluation of any children who present with vir-0 G# h" B7 I; L: a
ilization or peripheral precocious puberty. The diag-
5 {; k; N( E1 Y& d0 ^nosis can be established by just a few tests and by9 |& Z1 z' j7 G8 Q, m' W4 z
appropriate history. The inability to obtain such a4 I' z) l& e* g3 @2 Y f+ P% m/ t
history, or failure to ask the specific questions, may9 i# }5 {* n) P
result in extensive, unnecessary, and expensive
7 |8 [* W6 V1 tinvestigation. The primary care physician should be; o5 R" m$ V0 _! y; a
aware of this fact, because most of these children7 y( i+ g) s1 R, [
may initially present in their practice. The Physicians’
- z4 F& {! K- F/ U- e: WDesk Reference and package insert should also put a
4 P" f- z* G1 P/ ?: S, Lwarning about the virilizing effect on a male or
6 x0 N- _# A) e$ a! Bfemale child who might come in contact with some-1 Q4 P# ~" [+ d% \
one using any of these products.
5 Q& x- F* |, _* \7 |4 s; xReferences4 p+ A2 K# m4 v% ]3 w2 M
1. Styne DM. The testes: disorder of sexual differentiation
* n' M$ Y1 U- \7 K' T. a& Eand puberty in the male. In: Sperling MA, ed. Pediatric
2 r3 N4 o+ p Z/ _/ mEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;) ?. T1 Y0 x3 J o# M% E" r3 g$ z9 \
2002: 565-628.3 E, j& |$ ~& v7 t8 J
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious: d; y( ^! F+ y
puberty in children with tumours of the suprasellar pineal! F) Q" G) L \2 z
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
6 `. B h: E" }Topical Testosterone Exposure / Bhowmick et al 5434 L" A+ W6 a% B4 q5 W/ F) F* f
areas: organic central precocious puberty. Acta Paediatr.
* I2 Y8 D8 r7 }# {" j2001;90:751-756.% A) k0 @! |6 X2 { v7 d' ?8 E$ ]
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
' n9 h% f- ?/ @* CPediatric Endocrinology. 4th ed. New York, NY: Marcel
8 L t# p* h' UDekker Inc; 2003:211-238.
' r. B n' l1 s" @4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual- r- J. D- i4 n& K* C' L
development in a two-year-old boy induced by topical
: A3 |) L% Y8 c2 Aexposure to testosterone. Pediatrics. 1999;104:e23.$ X+ p: V5 c+ b. u
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
0 n# D8 i3 k/ m0 }Skeletal Development of the Hand and Wrist. 2nd ed." d) V8 y- W! B6 s
Stanford, CA: Stanford University Press; 1959.1 r. C% U5 @* h; S3 j, y
6. Physicians’ Desk Reference. Androgel 1% testosterone,6 c3 P( D5 H' M/ ]9 [8 X* J* S
Unimed Pharmaceutical Inc. Montvale, NJ: Medical
* @1 C# B+ [9 Q& Z0 lEconomics Company, Inc; 2004:3239-3241.
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