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is a significant concern for physicians. Central
3 \( E1 f+ v& L4 aprecocious puberty (CPP), which is mediated
' q9 C6 W; B& c# P9 j/ s5 q8 u5 Ithrough the hypothalamic pituitary gonadal axis, has
5 V% e3 t- a: E; K5 ia higher incidence of organic central nervous system
/ _1 v* _ T4 E2 Y! J9 slesions in boys.1,2 Virilization in boys, as manifested! ?+ }9 {: T, w' n; i
by enlargement of the penis, development of pubic
. t! c7 r- ?6 c; R+ V7 _- \hair, and facial acne without enlargement of testi-
; `7 g# {. C& b+ F+ Ycles, suggests peripheral or pseudopuberty.1-3 We2 f; ^8 e! ~8 x8 v. a
report a 16-month-old boy who presented with the
6 N! ^" b* z5 U" c0 yenlargement of the phallus and pubic hair develop-: E% A* _, i9 o( @ r# Y% ~7 e
ment without testicular enlargement, which was due4 _# G3 d! }7 r" }! s
to the unintentional exposure to androgen gel used by' f8 Z# w1 y) I% C9 S# Q
the father. The family initially concealed this infor-
8 t. C8 i) n2 X- p, W: A, F- [mation, resulting in an extensive work-up for this
3 Z/ S/ G/ K* J- uchild. Given the widespread and easy availability of
* p& K# V R( r+ Ntestosterone gel and cream, we believe this is proba-
3 {' `& W. V8 m3 ]" l2 c0 Cbly more common than the rare case report in the x4 c$ q/ ?7 }2 V' O6 M) z; g
literature.45 n2 t7 h0 i) o/ y2 @
Patient Report
* ~) H; x- X+ @A 16-month-old white child was referred to the2 v9 @* A9 x V* d# n5 H0 y: h
endocrine clinic by his pediatrician with the concern5 Q2 ~& w1 t S# f. q2 Z+ a6 c
of early sexual development. His mother noticed
' T3 x6 O! y9 } E7 Ylight colored pubic hair development when he was0 o$ q# G+ O2 R7 `, P; n
From the 1Division of Pediatric Endocrinology, 2University of
% A: j1 }/ x& d4 ?7 B) pSouth Alabama Medical Center, Mobile, Alabama.
8 B+ }5 L% e y- ]; gAddress correspondence to: Samar K. Bhowmick, MD, FACE,
o4 @* ^7 S; S; N2 F6 IProfessor of Pediatrics, University of South Alabama, College of
2 V8 {: F% d" Q$ \8 M; L/ @. tMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;3 V; e) z* K* i4 m
e-mail: [email protected].$ `5 U, c* J b- R d( @
about 6 to 7 months old, which progressively became
( F G) ?1 s4 B/ I) I4 S& F& Adarker. She was also concerned about the enlarge-
7 b7 K) s' y1 o$ p$ Q1 ^ment of his penis and frequent erections. The child1 \- p; W* f. n) o$ f
was the product of a full-term normal delivery, with
7 p. M" f) Z9 o3 Z8 Ta birth weight of 7 lb 14 oz, and birth length of
4 k2 E* j% g! h8 f6 s! v" b" L20 inches. He was breast-fed throughout the first year' h8 H+ l% \2 b7 l4 F8 c! s' E5 g) I" ?
of life and was still receiving breast milk along with* v9 q6 s3 J+ T ]2 `5 N/ k# P
solid food. He had no hospitalizations or surgery,# n( G; T# v0 L+ ?* B% P5 X
and his psychosocial and psychomotor development, r/ n) X! I4 A5 D; L
was age appropriate.
7 K$ I8 N( @ g+ g8 DThe family history was remarkable for the father,
, c; P' Q1 ~+ v! @who was diagnosed with hypothyroidism at age 16,
J5 p. s; B# `" Z+ E+ `which was treated with thyroxine. The father’s
6 `. c3 F& f" Y. f2 b2 qheight was 6 feet, and he went through a somewhat
% g& C$ V* D" [5 c* w% Oearly puberty and had stopped growing by age 14.
+ S0 L% b0 T) h- PThe father denied taking any other medication. The1 E/ w$ @9 n# o: J/ w2 X/ c) }
child’s mother was in good health. Her menarche
. V- D1 W+ j" F5 pwas at 11 years of age, and her height was at 5 feet
g6 [, H, ?/ _5 inches. There was no other family history of pre-$ Y' Z5 }9 A4 C* h" E+ `) r
cocious sexual development in the first-degree rela-
6 ]3 J4 ?5 C& N: y4 r, G! x$ ]tives. There were no siblings.
/ s& r3 W. w+ c7 m, T8 {% yPhysical Examination5 {, F% H9 S O/ m9 h
The physical examination revealed a very active,5 n4 W- t9 o8 `0 H6 V/ Z& k
playful, and healthy boy. The vital signs documented
B+ G- \% ?: \3 U: I+ Ua blood pressure of 85/50 mm Hg, his length was
7 f' U: P' s# d& k8 I2 Z& u90 cm (>97th percentile), and his weight was 14.4 kg
& I; q B$ }: t: ^3 }# f4 p1 H(also >97th percentile). The observed yearly growth* ~; i( V8 }0 I" i& M
velocity was 30 cm (12 inches). The examination of, x$ r5 Q/ f8 m8 \) ] s8 ?
the neck revealed no thyroid enlargement.
) W( a* t3 M3 uThe genitourinary examination was remarkable for
" i0 [1 f, H! u" P2 V. z% F+ Qenlargement of the penis, with a stretched length of
" w9 ^3 |; _: b- v& u8 cm and a width of 2 cm. The glans penis was very well. x3 @+ z* }1 J/ |8 ~. B7 z
developed. The pubic hair was Tanner II, mostly around
' u; ~3 y+ e& j5 `. `& J540( V. O% N7 Q Z1 U1 w* |/ o* `8 X
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
, G9 y# |( v t" C( M- Gthe base of the phallus and was dark and curled. The
1 V' s* b+ N8 m) v6 B* L( xtesticular volume was prepubertal at 2 mL each." h3 h6 x7 Q1 C
The skin was moist and smooth and somewhat
7 e6 Q3 B' G9 Y# n6 C( p: aoily. No axillary hair was noted. There were no
7 x$ ]7 \! S& s& Cabnormal skin pigmentations or café-au-lait spots.
: L% _, P6 ^! z; VNeurologic evaluation showed deep tendon reflex 2+ T* s5 W$ D5 v8 }/ r
bilateral and symmetrical. There was no suggestion! p3 M. b! D& x, a9 o
of papilledema.
, @: d) j# p' n/ E' Q2 C3 k+ |2 iLaboratory Evaluation
. g; j/ L5 Q& OThe bone age was consistent with 28 months by7 j* K$ |% ^( Z! V% s- }; A! ]3 v
using the standard of Greulich and Pyle at a chrono-
# M2 b/ R% O8 w' B2 P4 blogic age of 16 months (advanced).5 Chromosomal
/ d, D) Y2 m' _+ ~9 l( X, [karyotype was 46XY. The thyroid function test
" J5 E. m8 l7 n8 `: Eshowed a free T4 of 1.69 ng/dL, and thyroid stimu-
; c4 R4 ^/ m% E) G3 @* x" Jlating hormone level was 1.3 µIU/mL (both normal).
" J$ D* F2 ~) _' l* z: B+ CThe concentrations of serum electrolytes, blood
, v( `3 R+ T5 x, _3 @5 P1 v8 _urea nitrogen, creatinine, and calcium all were
4 R+ ~# q* P& }5 s2 ^. O" u7 X3 dwithin normal range for his age. The concentration
5 }- r. s, |3 ^; Xof serum 17-hydroxyprogesterone was 16 ng/dL3 J6 N* c/ F& b& e
(normal, 3 to 90 ng/dL), androstenedione was 20
! O; z9 R1 V* ?* q( ~. [4 R, A2 \ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-; k8 ^* B: f7 u u# ~: F5 B
terone was 38 ng/dL (normal, 50 to 760 ng/dL),
! B! E9 ^/ [4 zdesoxycorticosterone was 4.3 ng/dL (normal, 7 to
+ P4 [4 a! c0 s/ [1 H! k% D+ k; D49ng/dL), 11-desoxycortisol (specific compound S)
) U3 @8 I4 v* R$ ~was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-" A$ A4 ~. |0 v# u- k6 o" c% Z( l
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
. U; x& n5 F+ m8 z' d6 Ztestosterone was 60 ng/dL (normal <3 to 10 ng/dL),
2 Z2 b2 ^. g" ^4 b2 C: i9 pand β-human chorionic gonadotropin was less than- ^% N/ u3 n4 ?% G, w0 H( L
5 mIU/mL (normal <5 mIU/mL). Serum follicular+ v* ]3 B. d, j7 A
stimulating hormone and leuteinizing hormone G/ b2 l; _2 o$ `
concentrations were less than 0.05 mIU/mL5 ]8 D; k2 E4 g+ e) f) i8 y2 J! _
(prepubertal).
1 w% d6 y" i7 I! `( y% @+ \. BThe parents were notified about the laboratory; H( V3 X' ]% R e
results and were informed that all of the tests were
4 f" }6 P2 w$ h- k8 `, @* c5 Fnormal except the testosterone level was high. The' U" N% H% `( a4 l& v
follow-up visit was arranged within a few weeks to
, x5 P2 j8 B: Q& ?) Qobtain testicular and abdominal sonograms; how-
/ I8 [/ `1 G! }ever, the family did not return for 4 months.
2 C# Y6 G5 Q0 x1 @7 L( d9 LPhysical examination at this time revealed that the
+ N- X* j4 _$ I6 f9 nchild had grown 2.5 cm in 4 months and had gained
$ r E5 @: ?& r' T G7 G8 A2 kg of weight. Physical examination remained/ u2 b" A9 ]3 U' g
unchanged. Surprisingly, the pubic hair almost com-* H8 Q) _( R, H) n* E2 J
pletely disappeared except for a few vellous hairs at
6 R- U% o/ [6 ]) m7 Q; v' vthe base of the phallus. Testicular volume was still 2: S+ B8 B S. l4 {7 k7 s, g4 X
mL, and the size of the penis remained unchanged.
* ~8 R+ p- _; }; XThe mother also said that the boy was no longer hav-" }7 Y3 J* `, [2 @
ing frequent erections.
& j1 T9 T' `3 ~* }6 o" LBoth parents were again questioned about use of6 r4 t# o- B0 v9 P1 q
any ointment/creams that they may have applied to2 }; _3 f; J$ w1 l
the child’s skin. This time the father admitted the$ Z3 j: R8 O; k. U: `$ i
Topical Testosterone Exposure / Bhowmick et al 541: t( z$ K1 q7 J7 r
use of testosterone gel twice daily that he was apply-' |) }5 \. c) S O( D
ing over his own shoulders, chest, and back area for
7 l( |0 E: @. B+ T! Z( s: va year. The father also revealed he was embarrassed
1 G6 Y; x( h& z' Q$ z+ F+ _to disclose that he was using a testosterone gel pre-
; a4 Z* @$ ^* B8 xscribed by his family physician for decreased libido
& Q. q# S0 i! \. p8 qsecondary to depression.
" E+ v- j5 w* O) dThe child slept in the same bed with parents.
: d, T: }( ^0 g( w- b5 G5 o: C3 _The father would hug the baby and hold him on his6 C+ w# I0 t( O! X
chest for a considerable period of time, causing sig-
( X" z7 z& G& F" [' x! enificant bare skin contact between baby and father.8 ^( X3 C# O: ?8 P' [1 q6 b
The father also admitted that after the phone call,; z- k% T* R: }, C) U8 Z3 r9 J
when he learned the testosterone level in the baby
& E' t) N A0 @0 e& qwas high, he then read the product information
* C1 C7 d0 F8 K7 U+ N2 ^packet and concluded that it was most likely the rea- v4 s$ E0 ^, V: U
son for the child’s virilization. At that time, they
' c/ F+ f% O& H4 S3 B" j) Q: l, Q/ _decided to put the baby in a separate bed, and the
& l) m9 }8 C; i6 S3 T8 Gfather was not hugging him with bare skin and had) x: v; G# I* o5 \8 n, b
been using protective clothing. A repeat testosterone
4 D( I8 E5 y# t4 f& Stest was ordered, but the family did not go to the
: P- n; l) [' ]2 ?) w4 tlaboratory to obtain the test.
& C- w0 b E' M) d! l% E! `Discussion
6 [% ` n8 Q2 Q' K. I# jPrecocious puberty in boys is defined as secondary) O; H) I7 Q6 ~9 D$ ^" ~
sexual development before 9 years of age.1,4! J; A6 `3 r/ T2 i I
Precocious puberty is termed as central (true) when- Z) U. g1 Z8 m& \: q1 r P3 V
it is caused by the premature activation of hypo-
1 ^. \! E$ m0 D* h7 p D0 B3 ~thalamic pituitary gonadal axis. CPP is more com-- b) G! I3 s% u' M( b
mon in girls than in boys.1,3 Most boys with CPP& d. Q! g; E5 G8 C2 E
may have a central nervous system lesion that is
- k) M6 z! k' {) U- p7 T% }responsible for the early activation of the hypothal-$ P7 L% n! e" M) h& e$ |
amic pituitary gonadal axis.1-3 Thus, greater empha-( V- a G+ v+ f2 G: G
sis has been given to neuroradiologic imaging in! \9 w" s* X, x
boys with precocious puberty. In addition to viril-2 m E# b+ t2 S) f/ } H9 h
ization, the clinical hallmark of CPP is the symmet-* Y" q8 J9 @) ]; s2 `2 }
rical testicular growth secondary to stimulation by7 \" l* N4 c2 i. p6 P+ ^+ M
gonadotropins.1,32 c' M( W! h' v" ^* ]
Gonadotropin-independent peripheral preco-$ t' E5 S% m/ r6 N S$ b! E
cious puberty in boys also results from inappropriate
3 G( I) ]0 R/ ?5 [5 [4 v( eandrogenic stimulation from either endogenous or
& R/ |* o* E2 f2 U2 oexogenous sources, nonpituitary gonadotropin stim-
' G8 p; G0 @ J( d, E6 _$ Fulation, and rare activating mutations.3 Virilizing
0 E/ x. u8 T% |- O+ Jcongenital adrenal hyperplasia producing excessive# U; J+ l$ _1 f
adrenal androgens is a common cause of precocious& G: ]+ p/ J' Q, I$ C+ ?
puberty in boys.3,4* A0 X2 q5 A( y4 F! D
The most common form of congenital adrenal+ V$ l# ]7 }' m9 J% K/ P
hyperplasia is the 21-hydroxylase enzyme deficiency.2 b: G) T5 Y3 @( n6 H: N0 N" j
The 11-β hydroxylase deficiency may also result in- p: p& a! J( H5 I" I; \6 K) S
excessive adrenal androgen production, and rarely,
4 C7 X4 ], p: oan adrenal tumor may also cause adrenal androgen
* m4 h8 i3 T6 p7 I2 u0 Lexcess.1,3
2 I7 H6 ^! j. Zat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
( s9 v/ J6 R: s/ k4 O& v542 Clinical Pediatrics / Vol. 46, No. 6, July 2007/ A, k* _1 K4 Z2 D% O
A unique entity of male-limited gonadotropin-4 c0 `3 f3 g' M8 p0 j) V% {( f8 x
independent precocious puberty, which is also known
, T$ y9 A& l9 f$ u/ S& Das testotoxicosis, may cause precocious puberty at a
: D/ `2 o$ k3 Svery young age. The physical findings in these boys9 N% v& b5 T5 D* f
with this disorder are full pubertal development,
9 A& a c; i1 n: _. i6 k( e, {2 kincluding bilateral testicular growth, similar to boys, k9 n7 @& U! i) u# Q. ~% h w: w; g0 I
with CPP. The gonadotropin levels in this disorder
# B, E' A7 f, ~3 I7 S% o& n( Bare suppressed to prepubertal levels and do not show
# ^8 I9 _4 h$ q2 Qpubertal response of gonadotropin after gonadotropin-
( z3 ]% e8 F. v7 Z* H3 o/ d3 h3 breleasing hormone stimulation. This is a sex-linked; H8 E9 s6 e+ n4 b4 ?; |# @
autosomal dominant disorder that affects only( c+ ~3 L" O3 ~" l) i j
males; therefore, other male members of the family' z3 y! a G3 p& X, U( {
may have similar precocious puberty.3* {, E* F3 i& W, ^$ d
In our patient, physical examination was incon-5 \2 j& z# G/ I" E) k1 @! e# j8 w/ V
sistent with true precocious puberty since his testi-
4 W! [4 [% ~+ ?1 d* N5 V, Z8 \$ Ucles were prepubertal in size. However, testotoxicosis
2 ] |% J# t* i2 q( R2 ^was in the differential diagnosis because his father o% K2 W! c. K0 q: D y5 z: }
started puberty somewhat early, and occasionally,
2 B) W# a' R% E; @$ u3 n* t3 `testicular enlargement is not that evident in the9 K( ^4 c- E$ t/ L# H1 q
beginning of this process.1 In the absence of a neg-
4 {# ]# C1 |! i* Y0 hative initial history of androgen exposure, our
& v5 `# D7 ]( r' ^, F; A% h+ wbiggest concern was virilizing adrenal hyperplasia,
1 d( L9 M0 h. B) o' C( Qeither 21-hydroxylase deficiency or 11-β hydroxylase
! _- a1 k0 p+ T& f- V" qdeficiency. Those diagnoses were excluded by find-, d! ^% E5 Q5 C/ y# _) q/ G( c
ing the normal level of adrenal steroids.$ u9 w8 y3 J$ j. P! ? d! S$ `+ M
The diagnosis of exogenous androgens was strongly
- W2 U& U1 @0 {6 A5 p% Rsuspected in a follow-up visit after 4 months because- u5 F7 q6 I) V
the physical examination revealed the complete disap-4 \- [: m* Z$ M! W% o2 l2 k+ U
pearance of pubic hair, normal growth velocity, and8 M8 a: d4 H; m4 R, F x
decreased erections. The father admitted using a testos-
3 q9 e% E7 f3 S5 y& V7 jterone gel, which he concealed at first visit. He was/ {: y( F* \" E# f) T
using it rather frequently, twice a day. The Physicians’8 J3 T. T, { L, p2 D
Desk Reference, or package insert of this product, gel or3 X3 n! d; h0 z3 j& u
cream, cautions about dermal testosterone transfer to
# E. W( E7 @. d4 Z8 punprotected females through direct skin exposure.
+ [1 d A2 L, Q, DSerum testosterone level was found to be 2 times the2 z6 g1 p8 d( B3 }! U" a' [
baseline value in those females who were exposed to( l3 S9 O. h" }- [$ M: K
even 15 minutes of direct skin contact with their male6 D. n! R4 v% |, q( S1 _5 j+ J) T
partners.6 However, when a shirt covered the applica-+ P5 I v( E! m; @* Q5 h8 U% N+ }
tion site, this testosterone transfer was prevented.$ c; `: f. T' E7 W- T$ A. x
Our patient’s testosterone level was 60 ng/mL,$ l% W# s4 p5 ~, U! p, l
which was clearly high. Some studies suggest that
% y& A& ?6 V) i+ A$ Rdermal conversion of testosterone to dihydrotestos-
9 S* ^* A6 Q) C- dterone, which is a more potent metabolite, is more
4 t; e8 e6 G" sactive in young children exposed to testosterone% B6 S; f4 e9 ?* N1 y. p" \
exogenously7; however, we did not measure a dihy-5 W1 e4 r; C! l8 q! l
drotestosterone level in our patient. In addition to
( M, d" U' d+ i( V; \/ Wvirilization, exposure to exogenous testosterone in% o- |( }4 ^) d l! G+ y% B
children results in an increase in growth velocity and9 D! E2 j# H( q5 v; {
advanced bone age, as seen in our patient.% \9 l, \+ }" h. z
The long-term effect of androgen exposure during5 f: b2 }1 u3 L7 n7 H% e4 ^/ n# h, a
early childhood on pubertal development and final
/ k4 t0 w' H* x/ W4 `+ Sadult height are not fully known and always remain
+ J7 b5 u2 r, c X6 L* ha concern. Children treated with short-term testos-
3 E, ?2 k* y& ~' ^: l; d/ uterone injection or topical androgen may exhibit some7 y% {. x* D) A! e8 Q0 a
acceleration of the skeletal maturation; however, after2 B7 Z5 q7 b& f2 F
cessation of treatment, the rate of bone maturation2 p9 h4 X. H" r. l6 ?
decelerates and gradually returns to normal.8,9
1 g" j- ?6 d8 \There are conflicting reports and controversy5 q3 n* W. Z" P: i+ g* u7 N+ ~
over the effect of early androgen exposure on adult9 k9 `& s9 |% E' s/ U/ C1 l# s
penile length.10,11 Some reports suggest subnormal
9 G3 k* @3 ?7 Y+ cadult penile length, apparently because of downreg-. I! B* |7 S' |' i
ulation of androgen receptor number.10,12 However,
4 p X ^$ f. K6 D) d5 ]! X, gSutherland et al13 did not find a correlation between8 m# d" T; V0 [. ]) m4 M
childhood testosterone exposure and reduced adult
0 C% V/ Q/ ?3 J& b+ s& i7 Kpenile length in clinical studies.
; x# J9 S5 d# h) ~5 O0 H; VNonetheless, we do not believe our patient is# r' w% N! A4 f3 i/ x+ {3 w
going to experience any of the untoward effects from
/ [( h7 @ G$ C+ V- ^4 P2 Xtestosterone exposure as mentioned earlier because" e h4 B# j: M+ W
the exposure was not for a prolonged period of time.6 u# m' T& c" U* a- X: e
Although the bone age was advanced at the time of
- {# z' O) P* ?$ gdiagnosis, the child had a normal growth velocity at% d0 J9 G, G% C8 r! P- O
the follow-up visit. It is hoped that his final adult
5 U @" K, t- Vheight will not be affected.& R) H& W9 r$ T
Although rarely reported, the widespread avail-* m1 {6 |1 }9 X( s8 [
ability of androgen products in our society may
: u4 |/ I8 u# b) x! h& uindeed cause more virilization in male or female4 R: t( r4 _4 N2 g' S* r- H
children than one would realize. Exposure to andro-
& z' t u9 y7 I2 \! P7 B# t) {( [gen products must be considered and specific ques-/ S5 S0 l b. p# }# e
tioning about the use of a testosterone product or
3 Q0 A. Q1 X4 v' ~gel should be asked of the family members during5 A% l- z) t Y8 p
the evaluation of any children who present with vir-+ i+ |4 J9 b& A4 Q. e
ilization or peripheral precocious puberty. The diag-
( v4 i0 R. a4 d& lnosis can be established by just a few tests and by
6 u' A* B* I5 E$ ~$ ~8 nappropriate history. The inability to obtain such a
0 U9 T1 s+ H* L' _' @: u( bhistory, or failure to ask the specific questions, may
* Q" ]5 h* g' f% Xresult in extensive, unnecessary, and expensive" |, l# h; `! b* o, M& v! C/ F
investigation. The primary care physician should be5 R0 N! G2 I& W- k$ D8 T) V
aware of this fact, because most of these children
/ l6 p* t+ D1 _may initially present in their practice. The Physicians’; e. S7 S3 U* N1 p
Desk Reference and package insert should also put a
7 \7 j2 b3 g6 v& }( Y* _warning about the virilizing effect on a male or4 Z; W) g: s) f% b
female child who might come in contact with some-
- I7 O6 x5 L. @! h$ D$ Bone using any of these products.9 U1 b5 q; ~( t7 L* U) @
References. ^( W0 B- @8 c2 a
1. Styne DM. The testes: disorder of sexual differentiation
' i" o: ?) ^, H, C7 ^$ D0 _+ }and puberty in the male. In: Sperling MA, ed. Pediatric) O0 z$ P1 d% ^! q
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;& D) G( M: B. M; K
2002: 565-628.0 L" [) p8 H, |
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
, u' }% [2 Y; ], a% Jpuberty in children with tumours of the suprasellar pineal
. k a& S x5 j/ Uat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from3 N% V5 u ?' C9 r+ C
Topical Testosterone Exposure / Bhowmick et al 543
3 Y0 m) p9 W! Oareas: organic central precocious puberty. Acta Paediatr.8 J6 E/ E, I) L
2001;90:751-756.
) D6 b# Q( S( B5 y0 o: ?$ n& B1 p3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
& e6 ^4 J; Z$ G- L7 KPediatric Endocrinology. 4th ed. New York, NY: Marcel
0 P; E; r& j6 q1 X# \& KDekker Inc; 2003:211-238.8 D4 X! v/ E& I! C
4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual, G/ j" q! m% ?! S' ?& ^; N
development in a two-year-old boy induced by topical- l% X$ S4 v' f |4 C9 e
exposure to testosterone. Pediatrics. 1999;104:e23.5 D' ~: O( t- i' g$ B" \' S% ~
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
+ E; j0 }& p) |+ rSkeletal Development of the Hand and Wrist. 2nd ed.9 Z4 Z$ e7 `/ ]* d/ O/ b% L
Stanford, CA: Stanford University Press; 1959.1 v- W- {; O9 u3 W @
6. Physicians’ Desk Reference. Androgel 1% testosterone,
8 ?; P0 P8 k! S. u2 @: K/ w- kUnimed Pharmaceutical Inc. Montvale, NJ: Medical
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