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is a significant concern for physicians. Central1 O# L8 E; j( ?# z7 x7 ^
precocious puberty (CPP), which is mediated
: }4 L2 ^% A% c( ~through the hypothalamic pituitary gonadal axis, has
' M+ E: r/ z! k/ \6 X2 B5 qa higher incidence of organic central nervous system
5 D$ V& U/ e$ `# alesions in boys.1,2 Virilization in boys, as manifested
3 y) W9 C1 h/ _3 g1 |by enlargement of the penis, development of pubic6 s2 f8 L( Q' u1 P: I* R& ~
hair, and facial acne without enlargement of testi-& e" ]9 [4 H3 \: p- H9 A
cles, suggests peripheral or pseudopuberty.1-3 We5 `3 ^) n% n* V( i9 [9 ^
report a 16-month-old boy who presented with the
& [4 E6 g( y8 s/ }9 F0 Nenlargement of the phallus and pubic hair develop-# ~) m0 d, B$ B5 F% E9 y; G
ment without testicular enlargement, which was due
- z' F0 u) N1 i0 E% Vto the unintentional exposure to androgen gel used by6 |3 v' P2 \3 T3 V1 N
the father. The family initially concealed this infor- \8 Y4 l4 m) }) p3 W& l/ k
mation, resulting in an extensive work-up for this
F. X4 }! G' \% ]2 a. \child. Given the widespread and easy availability of
4 p' I* \9 v! T( U( c0 ktestosterone gel and cream, we believe this is proba-- l- A- F; G- I0 O1 ~1 } [" T
bly more common than the rare case report in the
) y" H8 ?6 `8 S; a3 vliterature.4! @. ~" z5 [* e4 m- Q
Patient Report
; Z6 X! T. `1 N* V2 {0 P# _4 k1 aA 16-month-old white child was referred to the
* p) j: E# x B! D2 J$ [endocrine clinic by his pediatrician with the concern0 V# ~: h7 Q+ ]6 [3 I
of early sexual development. His mother noticed
# T/ T: N4 ]+ U3 {+ l( ]light colored pubic hair development when he was
9 |. j9 b; \ J! r% fFrom the 1Division of Pediatric Endocrinology, 2University of
* N. O, ~) }( w4 d" HSouth Alabama Medical Center, Mobile, Alabama.
) Y5 I# V2 D. s' w! dAddress correspondence to: Samar K. Bhowmick, MD, FACE,4 u. e' n- U, W2 b; F( n) y
Professor of Pediatrics, University of South Alabama, College of# t: h1 \7 K9 f6 _5 \ U3 `
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;% R, D+ Y0 l c7 x6 I! }
e-mail: [email protected].8 B# T4 h2 Z- w" m, J" C
about 6 to 7 months old, which progressively became- r( l1 O7 e8 w- a% i% H& T
darker. She was also concerned about the enlarge-
4 Q0 Z; w( s9 Y" ?8 ament of his penis and frequent erections. The child
% d4 G' c# c; s) {7 G' R% I8 Vwas the product of a full-term normal delivery, with
{$ y" F2 q+ u5 R! ea birth weight of 7 lb 14 oz, and birth length of1 {+ ]7 t7 R" _# {8 w: |
20 inches. He was breast-fed throughout the first year% \' ^: g1 k. ~/ ?
of life and was still receiving breast milk along with5 h8 o! a8 b: @6 W: A
solid food. He had no hospitalizations or surgery,
0 E5 x) Z7 W. l" Oand his psychosocial and psychomotor development
, ]- ~" f" B! E$ _# K# Bwas age appropriate.( `- A# t- F- [, s8 Q
The family history was remarkable for the father,+ m( @2 ], r! }) Q$ J1 x: \
who was diagnosed with hypothyroidism at age 16,
, x/ A' t0 y2 [& T+ mwhich was treated with thyroxine. The father’s
6 f$ X+ [' a9 R* |; H- Yheight was 6 feet, and he went through a somewhat( a$ ]& ]) j! F+ z' ~
early puberty and had stopped growing by age 14.( E! _3 `7 S3 R, X2 m
The father denied taking any other medication. The, n4 \% |* j9 C) E2 G0 J
child’s mother was in good health. Her menarche% s5 F) `; \) ~
was at 11 years of age, and her height was at 5 feet. D. J) S# m6 `! w% K& |
5 inches. There was no other family history of pre-
0 }8 y* C2 x: y0 j" Lcocious sexual development in the first-degree rela-+ g4 |& `: o3 c, l: R i C1 Z& W
tives. There were no siblings.
$ n6 i; f# S0 |3 K% oPhysical Examination
$ W: b G! x" |; Z S; cThe physical examination revealed a very active,0 P1 g" f4 `2 M: A% G7 ^
playful, and healthy boy. The vital signs documented
0 S1 B6 W1 W. Wa blood pressure of 85/50 mm Hg, his length was
& p! J4 \. ~( d2 K' ]6 v2 |0 d; A3 c90 cm (>97th percentile), and his weight was 14.4 kg& d# w+ D6 ]9 P( A* ?
(also >97th percentile). The observed yearly growth
6 i1 a- y6 u; K8 T5 n3 i% Pvelocity was 30 cm (12 inches). The examination of' a6 h( T' @% G7 _" R/ Q, U
the neck revealed no thyroid enlargement.
" Q' m& g. o- ^: cThe genitourinary examination was remarkable for
4 B d. v8 g: J }/ w) v1 wenlargement of the penis, with a stretched length of
$ c" r u7 }* ]+ H+ o" T) W8 cm and a width of 2 cm. The glans penis was very well4 Z1 k+ L& n5 m( ?: H. w
developed. The pubic hair was Tanner II, mostly around
( v. O, T3 Q0 J' U8 L2 N2 W540
' h! t2 @; x* }) F" E5 W; a) y5 `at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from9 n8 B6 f- [. P+ A& C( m
the base of the phallus and was dark and curled. The. V9 e; X, P0 k' a3 Q7 ]; j p
testicular volume was prepubertal at 2 mL each.! V$ z& P. E4 j1 Y) ?% b. }7 g
The skin was moist and smooth and somewhat
/ {6 M' C+ o' |; t6 noily. No axillary hair was noted. There were no: d6 L# b1 o6 ^2 M5 n4 n
abnormal skin pigmentations or café-au-lait spots.7 i0 V& u+ O4 a- `& }2 Z
Neurologic evaluation showed deep tendon reflex 2+
, b; A- S% @2 |0 m7 Dbilateral and symmetrical. There was no suggestion3 x& C5 |8 ?- ~* E+ B/ F* \
of papilledema.
$ K' w# b- W7 E; t, d4 bLaboratory Evaluation
; n9 J; c5 }6 x; N/ W% }# WThe bone age was consistent with 28 months by! R( S( c0 {5 O+ n1 `4 n7 c
using the standard of Greulich and Pyle at a chrono-
. K- A4 ^7 Z- \! m( f$ |) p5 alogic age of 16 months (advanced).5 Chromosomal7 J& e8 g0 A: b) I7 q6 C1 G5 D
karyotype was 46XY. The thyroid function test
5 y* I; D4 p, G- A3 @! B8 [: }: yshowed a free T4 of 1.69 ng/dL, and thyroid stimu-
$ A- r3 k t5 b% o6 mlating hormone level was 1.3 µIU/mL (both normal).2 e C+ G: m( ~# R! z# V; w0 d
The concentrations of serum electrolytes, blood
, s" l- F* r- q& kurea nitrogen, creatinine, and calcium all were
' h( Z2 q9 y' w! `2 ] ^within normal range for his age. The concentration
$ O, B4 e5 T; y8 U9 `of serum 17-hydroxyprogesterone was 16 ng/dL
- H* R2 M+ ?0 ~, k(normal, 3 to 90 ng/dL), androstenedione was 208 j* D" M0 w/ a7 L
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-" q4 D! C8 [, l3 J9 _
terone was 38 ng/dL (normal, 50 to 760 ng/dL),
( {& I- K: z$ ?% g+ `2 }% m. idesoxycorticosterone was 4.3 ng/dL (normal, 7 to
. R' z" Y' M0 X5 z' ^6 ^7 X# z49ng/dL), 11-desoxycortisol (specific compound S)
8 ^7 C' A. V4 }/ C6 Vwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-' R$ k# D$ b# `
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total3 I$ w) q4 M( ?' V% e2 Z$ u' U
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
2 o- v5 ?9 K1 l% ~* A4 }and β-human chorionic gonadotropin was less than* \0 `$ {" B" V0 ]# w
5 mIU/mL (normal <5 mIU/mL). Serum follicular
; q/ |! }. r _& j" D$ Y; Wstimulating hormone and leuteinizing hormone
# g4 h2 n, i$ m, b* s8 aconcentrations were less than 0.05 mIU/mL
; y/ x8 k: E0 T+ ~5 c- ]1 c8 ?(prepubertal).
/ r& Z; q2 @# n5 |% MThe parents were notified about the laboratory! @6 R3 o' a: d2 L5 a/ w- o
results and were informed that all of the tests were0 j; `( }7 H7 o2 j w, z
normal except the testosterone level was high. The
4 x5 d7 P- B) W- o4 f1 afollow-up visit was arranged within a few weeks to
+ z. i. E* L1 I! o- W) W" [- Zobtain testicular and abdominal sonograms; how-! }: E/ E+ D3 \/ w
ever, the family did not return for 4 months.% u- q3 Y; V( T. @. U N
Physical examination at this time revealed that the; V' ]2 ]" }3 o. J. y9 E" ]/ P
child had grown 2.5 cm in 4 months and had gained
' M6 A% e8 \+ N6 z+ W3 E8 R2 kg of weight. Physical examination remained; ?( t" |" i/ o! Q
unchanged. Surprisingly, the pubic hair almost com-4 _" Q1 ?; D8 w
pletely disappeared except for a few vellous hairs at
1 f2 m% V; ~" P5 x* E0 zthe base of the phallus. Testicular volume was still 2! l3 l$ v5 _: X8 q' J
mL, and the size of the penis remained unchanged.
# ~- T4 b3 v& f0 w2 j' g# I. K2 u; ZThe mother also said that the boy was no longer hav-: U6 y4 [ f2 D' e( c1 t8 C
ing frequent erections.
4 M+ Z& ?% j# I; _( `! wBoth parents were again questioned about use of. J2 x- F. o3 I( F {7 c1 Q
any ointment/creams that they may have applied to
5 i8 X+ k* n, ]: G; B2 |the child’s skin. This time the father admitted the
) I, F* E# @- \" _" a, _, yTopical Testosterone Exposure / Bhowmick et al 5413 }! P0 A5 F. V% H1 d
use of testosterone gel twice daily that he was apply-7 \7 j* f; _+ U3 D
ing over his own shoulders, chest, and back area for, `" p$ q8 s6 q7 r+ ~1 g& |3 b9 D& M
a year. The father also revealed he was embarrassed3 ]" d- l+ ^; k( S
to disclose that he was using a testosterone gel pre-5 }" c. r4 m: o8 q& G8 m$ m1 t
scribed by his family physician for decreased libido
$ f0 o7 o; w; H1 c& `secondary to depression.- |9 N- ~$ F" L# ]9 v$ ~3 h
The child slept in the same bed with parents.
9 u& o2 T, V4 r: ]3 H2 W6 j; DThe father would hug the baby and hold him on his
; D4 X* L" K. k2 j/ a* |chest for a considerable period of time, causing sig-4 j: N2 G0 T# L. Q" `- U7 N' e8 N
nificant bare skin contact between baby and father.
3 `7 v$ H9 k ^$ D4 J8 vThe father also admitted that after the phone call,
; J, P( `3 s& ywhen he learned the testosterone level in the baby; j r6 z# _* a" g
was high, he then read the product information& t; Y/ C) ~3 a' y* @" t" z( H
packet and concluded that it was most likely the rea-
; R2 _. u1 h5 T# \' fson for the child’s virilization. At that time, they( ~2 y8 B8 o- l: k. H2 R
decided to put the baby in a separate bed, and the
# J* H- r8 {: D* x& ]9 A& lfather was not hugging him with bare skin and had. ]; z* H" ]! v* N6 ?% a
been using protective clothing. A repeat testosterone
3 F* H+ F% f9 x0 j9 G* Otest was ordered, but the family did not go to the0 ]1 H! Q* ]) J3 m9 u
laboratory to obtain the test.% h3 W' T& }9 v: A u# P
Discussion9 }6 p9 P1 Q3 N. ~9 |
Precocious puberty in boys is defined as secondary
- a8 T9 ], ?& G+ e7 i# N+ z2 ~1 Gsexual development before 9 years of age.1,49 \' i! @, \6 w& G. v
Precocious puberty is termed as central (true) when: Z. @5 Y( X; ~$ D% O. h5 u% m
it is caused by the premature activation of hypo-6 d* C+ x# D1 i6 \+ }
thalamic pituitary gonadal axis. CPP is more com-
8 {6 N% V$ z4 q4 emon in girls than in boys.1,3 Most boys with CPP3 W9 Y+ C. j$ G0 \; _: x, X
may have a central nervous system lesion that is% W0 s5 }; {! K8 P2 ]
responsible for the early activation of the hypothal-
% D$ x% m* p( O- tamic pituitary gonadal axis.1-3 Thus, greater empha-4 e) k1 S' |1 I7 g
sis has been given to neuroradiologic imaging in P# J) j" N8 T5 ?: |' M$ V' H& D* w
boys with precocious puberty. In addition to viril-# Q4 D4 ~ a& k$ f# }9 Y* }5 C# L
ization, the clinical hallmark of CPP is the symmet-
' v# z; J& k, W, c9 p7 N9 frical testicular growth secondary to stimulation by
9 v7 x% X: x: [* T6 Cgonadotropins.1,3
& A2 H ]4 w, Z/ dGonadotropin-independent peripheral preco-
7 A: _* N7 D( dcious puberty in boys also results from inappropriate
1 m1 H$ P2 L, w. `" P0 G7 g" Dandrogenic stimulation from either endogenous or' x& \# G9 O/ g. }. ?5 l# _
exogenous sources, nonpituitary gonadotropin stim-
9 n8 y6 l! f# Y/ u5 `- q F" Aulation, and rare activating mutations.3 Virilizing& U5 I: R- j% Y( T; n
congenital adrenal hyperplasia producing excessive& M0 b9 G4 b$ l, X* _; b. ~
adrenal androgens is a common cause of precocious) z& ~+ @( V2 f' C3 e4 {) y, S8 K
puberty in boys.3,42 z. H+ C! h: v, \, W
The most common form of congenital adrenal
! `5 H R* n; S' U4 chyperplasia is the 21-hydroxylase enzyme deficiency.
7 `5 |5 U/ a( m/ J% SThe 11-β hydroxylase deficiency may also result in
; C6 w2 j9 |' Vexcessive adrenal androgen production, and rarely,
: D2 |, B* _! t. p# ~- O" E+ q" lan adrenal tumor may also cause adrenal androgen
' e+ T& A! ~1 O3 Eexcess.1,3
1 o0 @& |2 t" W3 ~- C+ hat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
7 @# F" l- H' M* K" |8 j/ W542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
3 ?; Q) w) o9 V; S+ t: p3 M' aA unique entity of male-limited gonadotropin-+ s8 Y3 y/ t+ \# r+ Y m2 o
independent precocious puberty, which is also known
- n3 X! r! b8 M# k) C( Has testotoxicosis, may cause precocious puberty at a
+ @4 S2 Q( U$ A/ i: e7 ?$ `very young age. The physical findings in these boys
. h! z6 O# L( i6 J" \with this disorder are full pubertal development,! Q! p9 ^" i# d+ A( S
including bilateral testicular growth, similar to boys2 O4 P+ w( _$ Y
with CPP. The gonadotropin levels in this disorder
/ F3 ?% y' s7 M7 aare suppressed to prepubertal levels and do not show$ G' j# |; Q7 `3 n, s7 x
pubertal response of gonadotropin after gonadotropin-
3 q# |8 a8 ~& F0 x& h) p; k. `releasing hormone stimulation. This is a sex-linked# ]/ c" @& a) l0 f; P$ F
autosomal dominant disorder that affects only( L1 p. o p! n7 ?: G V
males; therefore, other male members of the family# v: z1 F W5 o! F+ Y
may have similar precocious puberty.3: D/ z* E6 U$ j8 ~* F
In our patient, physical examination was incon-
; Q1 w- w3 d" }, R! x0 [sistent with true precocious puberty since his testi-- _- Q v6 T7 o. y0 E
cles were prepubertal in size. However, testotoxicosis) m' m+ M( g& K/ Q( e+ L1 W0 E
was in the differential diagnosis because his father9 T5 @% J# v$ w: X
started puberty somewhat early, and occasionally,
7 N3 Y# m$ G& t- e; S, dtesticular enlargement is not that evident in the8 ? I3 e! C* W! ~0 ], w
beginning of this process.1 In the absence of a neg-
6 R0 V1 M' v9 i" Iative initial history of androgen exposure, our
4 Q3 [" ~7 H* D Kbiggest concern was virilizing adrenal hyperplasia,
* i3 _9 V/ o1 Q/ l+ {6 Reither 21-hydroxylase deficiency or 11-β hydroxylase& w7 y( ^8 A7 X5 y9 J$ ~
deficiency. Those diagnoses were excluded by find-. w/ O7 a# N1 w( a3 p! _' k
ing the normal level of adrenal steroids. s W# f4 F7 X6 C; C
The diagnosis of exogenous androgens was strongly
. K% B2 `* s3 Z" v7 Lsuspected in a follow-up visit after 4 months because. v$ p& r3 h8 W" ]% H8 c
the physical examination revealed the complete disap-0 O. K2 N( _8 q* G" ~' u T# x
pearance of pubic hair, normal growth velocity, and
" Z" T/ w( p' R+ Z! U7 [decreased erections. The father admitted using a testos-, y: K, y0 M0 R! K4 k4 m0 O
terone gel, which he concealed at first visit. He was
" w" y1 f- g" K! c' Lusing it rather frequently, twice a day. The Physicians’3 f3 P) q9 I5 f2 V0 v
Desk Reference, or package insert of this product, gel or; @# q: Q: W4 S8 U
cream, cautions about dermal testosterone transfer to8 n! j5 n! H$ t3 g8 ~4 H, @6 r- f
unprotected females through direct skin exposure.$ u2 z, P6 e, L# V, \
Serum testosterone level was found to be 2 times the, S$ J) o- n" I# W
baseline value in those females who were exposed to
$ l3 k: Z8 _+ Y$ c8 e1 K( eeven 15 minutes of direct skin contact with their male
' J& A, h3 y% Rpartners.6 However, when a shirt covered the applica-+ w' {9 d( n" j8 }7 a2 v
tion site, this testosterone transfer was prevented.
$ \1 v8 _, e" \# e$ a" ^Our patient’s testosterone level was 60 ng/mL,) I/ ^9 |, j+ x5 r! [4 }& J
which was clearly high. Some studies suggest that$ \1 P0 x$ U4 [# { v R/ C
dermal conversion of testosterone to dihydrotestos-' P2 D& ^) l7 p6 ^! [: h, S
terone, which is a more potent metabolite, is more8 u3 I4 |5 w. V" x2 a5 ^
active in young children exposed to testosterone
/ e' n2 C y! u4 m9 rexogenously7; however, we did not measure a dihy-% ?9 p3 l3 q0 W0 \& n) U, X
drotestosterone level in our patient. In addition to
7 d; E, f( j$ ~: @) S" uvirilization, exposure to exogenous testosterone in. ?$ k8 `- e; N; c7 D; x- _- p& U
children results in an increase in growth velocity and
! n: Q8 E! q% T2 d3 m4 G+ \advanced bone age, as seen in our patient.
1 B# ~. W) a5 N, K( }8 BThe long-term effect of androgen exposure during/ I; c% T. q9 l) b: I( p9 H
early childhood on pubertal development and final
* X2 s! b) g7 \ ?adult height are not fully known and always remain
8 l$ \# I% d) w7 H! Z Sa concern. Children treated with short-term testos-0 g5 J! h" n$ e& C( `
terone injection or topical androgen may exhibit some2 h4 l( O0 k% W- o
acceleration of the skeletal maturation; however, after+ `+ M7 \7 V! Y2 m+ R: i" y
cessation of treatment, the rate of bone maturation
. b+ _( L# ]. f) L6 T+ Z) ^2 I, rdecelerates and gradually returns to normal.8,9
, D8 R2 d1 S) I% X+ R& W; L3 jThere are conflicting reports and controversy ^6 r4 R1 c5 n# }+ M* p
over the effect of early androgen exposure on adult3 C0 [/ b1 m5 v9 E ~8 w& V! U; _: Z
penile length.10,11 Some reports suggest subnormal' ^; M: [' s. F. L- S
adult penile length, apparently because of downreg-
8 { k+ W& Y) b3 h2 B- Gulation of androgen receptor number.10,12 However,
2 Q+ W8 Z7 d; u* }3 J0 I# ESutherland et al13 did not find a correlation between+ J) e1 h6 U4 V ^; h
childhood testosterone exposure and reduced adult
, ~3 E3 u& i" @% [penile length in clinical studies.3 S, p0 Y3 D8 O( D8 M- I5 @
Nonetheless, we do not believe our patient is
' u O% H8 Y$ M% e( ^ qgoing to experience any of the untoward effects from9 j3 h) ^; r( M) v' q& ^
testosterone exposure as mentioned earlier because+ e5 b- s9 @: _* |) t5 a/ j. E
the exposure was not for a prolonged period of time.
7 o+ \2 h; v) J: V& ~, nAlthough the bone age was advanced at the time of
1 W4 O. q9 X, H0 C( _: `% a# t% odiagnosis, the child had a normal growth velocity at
" y$ ], ^; Q- R9 l$ b. Hthe follow-up visit. It is hoped that his final adult3 |- N/ R: ]0 _5 _ S- B) x
height will not be affected.
2 j! R J1 M, B! z% |Although rarely reported, the widespread avail-
! [- R: \8 v, Z4 J5 M% k- ~ability of androgen products in our society may/ s6 k. g" ]6 m0 }0 i
indeed cause more virilization in male or female
" ?& v: {9 l3 i' l! Tchildren than one would realize. Exposure to andro-
0 Y2 N$ ^. C# ], d. J$ d, |* {8 y8 qgen products must be considered and specific ques-- c( w- T3 N0 B; a( N& w0 X$ O
tioning about the use of a testosterone product or, S, V: O! V% W5 i5 u! n# ? d( e
gel should be asked of the family members during4 S+ A V3 c% T% |* |& W
the evaluation of any children who present with vir-
9 m" K, ^/ C5 J3 W' milization or peripheral precocious puberty. The diag-& L! K. y3 Q$ X6 |
nosis can be established by just a few tests and by- I' C* Y* l, k( t
appropriate history. The inability to obtain such a, Y( w. K! F* @' o
history, or failure to ask the specific questions, may
% A8 f3 [2 i( g' A! Xresult in extensive, unnecessary, and expensive
$ A8 P/ g- z* E( u! jinvestigation. The primary care physician should be
9 ~& _; M/ f( n7 x! R6 vaware of this fact, because most of these children
; I" i) G$ U7 G k7 w" K+ l; Amay initially present in their practice. The Physicians’
. [# m" Q+ n1 N+ H/ fDesk Reference and package insert should also put a" e( Q& t# \3 ^7 u
warning about the virilizing effect on a male or
* I4 e. u5 O- J! ^. E; l) R6 Jfemale child who might come in contact with some-7 x5 F2 N' q7 J' q9 f3 j0 ?
one using any of these products.
; `- F# e* }; NReferences
/ g H% v5 G( C! O1. Styne DM. The testes: disorder of sexual differentiation' D7 ~! Z2 q+ b% d* ?8 M1 o
and puberty in the male. In: Sperling MA, ed. Pediatric. w& \* _. M2 L9 @
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
6 |9 q T/ G. B* r2002: 565-628.
5 C( R3 T1 G- f) o2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious% d6 ]- ]5 Q4 \, e; k
puberty in children with tumours of the suprasellar pineal9 Q+ T0 i$ K! T4 m6 V" G9 L- m& ?9 g
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from% L/ `/ f( Y3 E+ e ]# W' W. \
Topical Testosterone Exposure / Bhowmick et al 543' O+ o7 w" K+ n
areas: organic central precocious puberty. Acta Paediatr.
1 u/ K1 K; D+ W# e+ V2001;90:751-756.4 M, O Z7 A+ e8 z- J+ @
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
" K' x' N& b, [" p; pPediatric Endocrinology. 4th ed. New York, NY: Marcel" Z1 W- A! T1 V
Dekker Inc; 2003:211-238.; G; }( d- J5 C2 p" F
4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
2 v' ?+ o3 [1 b& R( Vdevelopment in a two-year-old boy induced by topical( {* D$ d9 v1 I3 o m- C: e
exposure to testosterone. Pediatrics. 1999;104:e23." \9 p/ U4 Q6 |+ h0 Z0 w
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of2 s% j( J( J i
Skeletal Development of the Hand and Wrist. 2nd ed.
4 O. D' R0 x; p1 U! d" z& FStanford, CA: Stanford University Press; 1959.+ J' P8 I8 ~2 X
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