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is a significant concern for physicians. Central
/ R0 a( F3 U" c. v; b+ }/ ~precocious puberty (CPP), which is mediated
9 b% [4 D7 C3 f. b( d4 @# wthrough the hypothalamic pituitary gonadal axis, has& u- w+ v7 I# ] B5 M4 k" _2 |- y8 I Z
a higher incidence of organic central nervous system2 Q) w p7 \, k2 `' `3 m- V2 x
lesions in boys.1,2 Virilization in boys, as manifested8 z, I! Z; r! r- L' m
by enlargement of the penis, development of pubic7 P1 E. A: w ]- L
hair, and facial acne without enlargement of testi-4 Q7 d4 u, W+ H. k4 e
cles, suggests peripheral or pseudopuberty.1-3 We
7 O7 e1 f0 H) h: e# r2 N& z+ g7 Ereport a 16-month-old boy who presented with the
( K" A2 b) B5 N, i$ B9 e9 henlargement of the phallus and pubic hair develop-
! `- R" h5 f e- E1 j. Z+ @# ?ment without testicular enlargement, which was due/ C4 `1 a) s8 ~: C( \# U
to the unintentional exposure to androgen gel used by
) X1 f+ l m2 I* ~the father. The family initially concealed this infor-
0 n4 F% v0 g3 _% k9 ~mation, resulting in an extensive work-up for this8 M" o' r3 C2 l3 z6 O( j8 q, ^+ B
child. Given the widespread and easy availability of2 X P* X3 [; t/ k2 A
testosterone gel and cream, we believe this is proba-/ b( p3 M. N2 ?% I5 k0 t
bly more common than the rare case report in the: A& x. @, u1 @5 }/ G4 m8 O9 T" R1 Q5 q
literature.43 n% Y/ I: c9 x; Z! a
Patient Report% K% L: c4 {4 |# S* M: T
A 16-month-old white child was referred to the2 e$ [+ J( A4 n3 y% R9 ?8 Y, Y- t
endocrine clinic by his pediatrician with the concern& }: \. i1 P4 ~5 F, B3 b
of early sexual development. His mother noticed
) U1 J9 E) s/ H( X( u5 T6 `$ llight colored pubic hair development when he was
& a' Z9 Z9 d% uFrom the 1Division of Pediatric Endocrinology, 2University of- B0 ?. s( v$ G) T- U2 d' X+ |( o
South Alabama Medical Center, Mobile, Alabama. {/ `; ~4 i* B' d d5 T3 k5 s
Address correspondence to: Samar K. Bhowmick, MD, FACE,
' ?+ e1 w4 p4 K, s+ _Professor of Pediatrics, University of South Alabama, College of8 U* @' _! F( p, e3 Y
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
8 f# c: k3 P6 Ae-mail: [email protected].9 N0 c) d3 `+ U @9 p0 J
about 6 to 7 months old, which progressively became
5 O% }1 p, n' Y; y! tdarker. She was also concerned about the enlarge-
: ~6 b: g" E( f) a+ kment of his penis and frequent erections. The child0 L' ], B" y8 X2 o% m: {6 y
was the product of a full-term normal delivery, with
" |+ V1 o5 c: z/ S) t6 Ha birth weight of 7 lb 14 oz, and birth length of
! N. w k- d `1 C20 inches. He was breast-fed throughout the first year
5 o4 f4 X; }( O6 M t+ [8 hof life and was still receiving breast milk along with
' D5 W% `& l0 T Z" |* H% bsolid food. He had no hospitalizations or surgery,
" s# e1 D$ l: S2 H) J( N G6 kand his psychosocial and psychomotor development' b, r9 ~+ Y9 l3 `7 ?" Y
was age appropriate.7 V$ O. G) |2 C2 }* A
The family history was remarkable for the father,. ]" s" p' A* \. X1 j$ U
who was diagnosed with hypothyroidism at age 16,
( a9 w2 \: n+ h3 mwhich was treated with thyroxine. The father’s
/ L( N0 h( E! Y1 Q. T% b- N& L3 t' bheight was 6 feet, and he went through a somewhat! j$ {* {# j# t, J
early puberty and had stopped growing by age 14.
+ M+ Y, Q& Z9 f9 D0 g: `The father denied taking any other medication. The
! f, ^$ h) {5 a# l. uchild’s mother was in good health. Her menarche
- l# j8 x! `/ @# {6 b: B: twas at 11 years of age, and her height was at 5 feet
+ d3 j0 r5 W# y' {! T# Z W: n5 inches. There was no other family history of pre-. s, n6 s1 }' x; \ o Q
cocious sexual development in the first-degree rela-- H" P( C4 w u3 i- C0 f, K. w- |
tives. There were no siblings.! m0 M* a' G7 P* ~ F
Physical Examination& {1 [: p! A# a f$ C3 _2 H& c0 z
The physical examination revealed a very active,2 }4 i" ?. e& P. O, v" q) N
playful, and healthy boy. The vital signs documented
& X0 s( s2 D; D5 [+ ^1 Ua blood pressure of 85/50 mm Hg, his length was
% c6 m) X5 I3 b: p, K$ U( ~$ ]+ I90 cm (>97th percentile), and his weight was 14.4 kg
8 m9 u/ x! S: U, Q5 X, M. X(also >97th percentile). The observed yearly growth& c5 K c9 B; S
velocity was 30 cm (12 inches). The examination of. r8 Y/ Y. Q& M& t4 ^" R. V4 ]- N5 v
the neck revealed no thyroid enlargement.0 Q9 M! G$ H. f0 }
The genitourinary examination was remarkable for+ g: X$ y! t8 O7 k3 p4 A7 b0 n
enlargement of the penis, with a stretched length of a! C6 U- }0 V, j$ R" _1 _, E: G
8 cm and a width of 2 cm. The glans penis was very well
% P( O9 T% T, S; S! n. e3 Qdeveloped. The pubic hair was Tanner II, mostly around3 W% Q. Y7 J6 R! O4 c
540
' u+ p- n" |* P& x6 {4 Lat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
3 V5 B( S( D0 ]4 o' a# I0 Athe base of the phallus and was dark and curled. The
$ l A6 j/ P" `% L( ^testicular volume was prepubertal at 2 mL each.8 g0 j# j& ]. q9 x9 p+ P; ]- s
The skin was moist and smooth and somewhat
( U/ ?5 }6 M6 s& Uoily. No axillary hair was noted. There were no
' }) t. _2 r# O" i+ uabnormal skin pigmentations or café-au-lait spots.
% P* l8 B: Z0 F$ r$ y# H' dNeurologic evaluation showed deep tendon reflex 2+% c+ ]4 J: e4 E5 t; i$ J
bilateral and symmetrical. There was no suggestion5 C! B: }: a0 [3 V1 d3 Y( y
of papilledema.
* Z2 i: z8 S* Q" m) KLaboratory Evaluation
. S' ^2 r* r7 d! u1 Y( _) x0 G4 T. m! DThe bone age was consistent with 28 months by+ }7 @" h C6 d+ {( ^ T. B
using the standard of Greulich and Pyle at a chrono-: E' J7 g+ \( e+ ?; ?; K8 X
logic age of 16 months (advanced).5 Chromosomal% ^7 z ]( R4 |& C' C: r
karyotype was 46XY. The thyroid function test) ]! E, Q" ?& Y! D3 m. Y
showed a free T4 of 1.69 ng/dL, and thyroid stimu-
2 `& j* [. ]! g0 b8 clating hormone level was 1.3 µIU/mL (both normal).' ^& a: i8 R! X% c) m1 a) m
The concentrations of serum electrolytes, blood$ \3 @6 p6 E* P8 ]
urea nitrogen, creatinine, and calcium all were2 t1 {9 L1 U' A2 N
within normal range for his age. The concentration5 e7 A# ~. L3 e
of serum 17-hydroxyprogesterone was 16 ng/dL3 l5 T7 q6 G6 b! |% `: Z; P2 l5 b
(normal, 3 to 90 ng/dL), androstenedione was 20
; ? ?0 @* x; dng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
/ T0 u; d1 {* Z& B8 Iterone was 38 ng/dL (normal, 50 to 760 ng/dL),
3 y' C: g" w: k9 fdesoxycorticosterone was 4.3 ng/dL (normal, 7 to9 I+ V% k7 G' I w* K0 i
49ng/dL), 11-desoxycortisol (specific compound S)& b7 e. u. ]3 j* Q) T" x
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-3 K8 _( U' X8 i* I% e: g8 z
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
$ D" V8 ^- g6 ?# \testosterone was 60 ng/dL (normal <3 to 10 ng/dL),( y$ ^+ c" B: C0 s6 ?
and β-human chorionic gonadotropin was less than" B# N5 L% s Z9 ?* N
5 mIU/mL (normal <5 mIU/mL). Serum follicular3 m7 ?" a2 U0 n/ H# `
stimulating hormone and leuteinizing hormone' u* K4 c' L3 S
concentrations were less than 0.05 mIU/mL2 u1 w. y' h+ B* z0 @6 W' a4 L
(prepubertal).( r1 Y" ^+ u4 Q+ H* U( j! v
The parents were notified about the laboratory
$ X9 k8 I. O9 e1 K+ |) Gresults and were informed that all of the tests were. j) p [( r$ C2 v% ~$ ]
normal except the testosterone level was high. The
) Z. d+ c9 L; V7 G6 V: Dfollow-up visit was arranged within a few weeks to
+ p8 |! l+ ]% ~2 h; \obtain testicular and abdominal sonograms; how-
' S$ x6 q5 m; k" x& I3 _, gever, the family did not return for 4 months.% G# A$ x8 D" k$ H ]6 f: j
Physical examination at this time revealed that the+ C5 V3 G2 B, C0 Z3 C7 b
child had grown 2.5 cm in 4 months and had gained
" J8 b' G3 q5 k" y2 kg of weight. Physical examination remained' `* W( j, `- T! u- Z
unchanged. Surprisingly, the pubic hair almost com-
8 F4 m g' P' u( H; t2 Q9 `pletely disappeared except for a few vellous hairs at# T' V8 ]$ K# k9 e: z, Z# h# j5 `
the base of the phallus. Testicular volume was still 2
, r' ~3 W& O9 m, h3 hmL, and the size of the penis remained unchanged.
; m& a+ A6 h/ o0 S* K* m7 N; ~The mother also said that the boy was no longer hav-% T8 O8 s8 i8 O) M+ C! N# R4 e
ing frequent erections.9 N; G. |0 d& C5 [
Both parents were again questioned about use of
+ F" }" k1 P3 M/ j/ k. G6 rany ointment/creams that they may have applied to$ e. \' {7 ?) c7 Q6 q
the child’s skin. This time the father admitted the
4 e0 S5 ?+ |* j; z; YTopical Testosterone Exposure / Bhowmick et al 541/ S9 d% ?) M& L
use of testosterone gel twice daily that he was apply-! b+ P' T7 f2 I4 @$ I
ing over his own shoulders, chest, and back area for5 U0 }7 X- T# | i0 d
a year. The father also revealed he was embarrassed
; k. `7 S( b; i y# o5 b1 tto disclose that he was using a testosterone gel pre-: z( e# K# C% n5 d7 {7 T5 F
scribed by his family physician for decreased libido
, v# E! O3 l' j& ?, Z6 Vsecondary to depression.
) t/ O0 Y3 Z+ L+ `& _4 @The child slept in the same bed with parents.0 O; C# ]( z8 u2 y% D" J8 O7 f0 Z& ?
The father would hug the baby and hold him on his/ ?# j5 D5 e# G7 c
chest for a considerable period of time, causing sig-# q( p8 M3 `* H# W. \; c: | S3 z
nificant bare skin contact between baby and father.
5 o! T! k6 Y1 J( I' C5 z! E0 [' bThe father also admitted that after the phone call,1 R( e4 A: `1 J% I4 H' _7 Q
when he learned the testosterone level in the baby
- B# \4 R3 d f& `, m' ]was high, he then read the product information1 D5 \3 J# ?; Z: g
packet and concluded that it was most likely the rea-
2 ~) a0 z! p+ C/ {7 _" f6 pson for the child’s virilization. At that time, they1 M0 K7 C* `$ q: C
decided to put the baby in a separate bed, and the. v6 O) M% Y8 c! r
father was not hugging him with bare skin and had W& `2 @; S# W; c/ ~8 W0 i
been using protective clothing. A repeat testosterone5 n5 T. b0 F& m
test was ordered, but the family did not go to the `& A- ^$ k' U5 Q: Q
laboratory to obtain the test.: J4 i# E/ `& y: f' t# h
Discussion) u. K9 D5 i2 m; V
Precocious puberty in boys is defined as secondary
( U* U* H* B+ h* l4 Dsexual development before 9 years of age.1,4) q9 e- E" C8 }* h- w, f4 S4 A0 p
Precocious puberty is termed as central (true) when
; Y; D2 J! {3 g- M' I+ y0 ~it is caused by the premature activation of hypo-
# x0 i% s( Y8 ? r8 G5 s$ D$ D fthalamic pituitary gonadal axis. CPP is more com-8 R/ I2 H! d, d4 a" D
mon in girls than in boys.1,3 Most boys with CPP/ c; J* g, ^/ o- l* k6 d" o" \9 N
may have a central nervous system lesion that is1 }+ p, u: I0 X. Y: H- E/ Z1 M
responsible for the early activation of the hypothal-
; g" @. g% ~, N% Q% Samic pituitary gonadal axis.1-3 Thus, greater empha-! `$ G" R4 J# u5 Z$ R5 w. Y
sis has been given to neuroradiologic imaging in
2 V9 o# Z" o) D. k Qboys with precocious puberty. In addition to viril-' ^( X) f/ I* b/ [
ization, the clinical hallmark of CPP is the symmet-. Y5 @9 ~9 z/ m V8 V
rical testicular growth secondary to stimulation by% F9 ]& N0 z- c- _, C
gonadotropins.1,3
/ c' V( W) [3 b4 Q4 P7 w3 nGonadotropin-independent peripheral preco-: z4 v1 A4 z a0 E( `
cious puberty in boys also results from inappropriate
# G: j8 H2 c0 u$ ~androgenic stimulation from either endogenous or
x0 d* i. Z! B5 z n7 j# ~: A' B, @* ^exogenous sources, nonpituitary gonadotropin stim-! d5 ^% s. C3 m; R6 d3 v
ulation, and rare activating mutations.3 Virilizing
7 W2 D/ F; V. x) `- {4 Ccongenital adrenal hyperplasia producing excessive
' O2 A3 y1 x+ u8 a( F+ Ladrenal androgens is a common cause of precocious
* k+ g9 A9 B% m+ z* J+ \. fpuberty in boys.3,40 v7 d( A' S7 o6 p1 H* T* s* C
The most common form of congenital adrenal, @$ m! ?' S. |7 B
hyperplasia is the 21-hydroxylase enzyme deficiency.
+ \/ Z2 L/ h2 Z: V4 UThe 11-β hydroxylase deficiency may also result in( A* j0 h" P. \6 W9 L j
excessive adrenal androgen production, and rarely,' E3 u. h+ g+ g; s, X1 v( m& e
an adrenal tumor may also cause adrenal androgen
% f! V2 O i$ V$ r0 | l0 u2 pexcess.1,3
9 U2 ?+ J4 Z( R, \6 }at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
! Y( V7 |- W: F% F& Q4 e% n8 ~542 Clinical Pediatrics / Vol. 46, No. 6, July 2007+ x' G: c' G( j' C
A unique entity of male-limited gonadotropin-
0 R8 A6 M( n0 {: o' `/ p* i3 A( Eindependent precocious puberty, which is also known
$ Y8 E0 }) c+ }# V4 i/ @as testotoxicosis, may cause precocious puberty at a% M5 M% a4 W" C4 T3 |0 _' W
very young age. The physical findings in these boys" e: z' |% v8 X8 E+ B) F9 u7 h, X
with this disorder are full pubertal development,$ E4 z9 a$ W4 p- A/ ]
including bilateral testicular growth, similar to boys
7 @% h1 H8 R7 D$ y( Swith CPP. The gonadotropin levels in this disorder5 t8 W! Y0 o5 r% Y5 v+ }
are suppressed to prepubertal levels and do not show8 R: s% _' h; d% ?( Z0 I
pubertal response of gonadotropin after gonadotropin-" y o# I3 J4 {7 T8 o7 T
releasing hormone stimulation. This is a sex-linked; ~5 R* h, ?9 M% [. v) U
autosomal dominant disorder that affects only- b# b2 T, b4 r3 A- B7 E
males; therefore, other male members of the family
; D! H% f2 C4 j- x( Dmay have similar precocious puberty.3
9 u3 C0 j1 `! I( `* Q" BIn our patient, physical examination was incon-, s* [: O* ?- H! T
sistent with true precocious puberty since his testi-
8 U7 S. x# s, l2 V. ^cles were prepubertal in size. However, testotoxicosis
0 n: E$ x; j. w& C. Vwas in the differential diagnosis because his father
# ^3 M! q8 V5 X) j* jstarted puberty somewhat early, and occasionally,# d1 ~4 t) ? |, Y2 p( s
testicular enlargement is not that evident in the% m3 H, f( o& x
beginning of this process.1 In the absence of a neg-
- f+ A; m0 Z; h7 ^* ~ative initial history of androgen exposure, our+ l6 f$ m. W% z, [
biggest concern was virilizing adrenal hyperplasia,
' X# ^. l; h: m+ V, G6 Keither 21-hydroxylase deficiency or 11-β hydroxylase! G' a. W! |" k. b
deficiency. Those diagnoses were excluded by find-
! u$ |! E. U1 E$ Ying the normal level of adrenal steroids.9 q% a% `2 E {7 k- A# F! A' d
The diagnosis of exogenous androgens was strongly
3 w& x; h7 [5 ?( z1 _4 F! [suspected in a follow-up visit after 4 months because
% u8 }8 }0 p8 g8 P, y: w! i4 ]the physical examination revealed the complete disap-# [* J: ^5 W( S4 L5 p
pearance of pubic hair, normal growth velocity, and
/ m7 \! A: n; j' }decreased erections. The father admitted using a testos-
, d5 d, ^" i8 Jterone gel, which he concealed at first visit. He was
. _/ Q' F. \- r4 Iusing it rather frequently, twice a day. The Physicians’. J8 R" U x: E1 R& c5 y) a7 n3 a! k
Desk Reference, or package insert of this product, gel or1 R% E& F" r7 d: q; u/ M
cream, cautions about dermal testosterone transfer to& {- @- B p" A/ J# V
unprotected females through direct skin exposure., S8 U5 D( A% U* W" N4 w
Serum testosterone level was found to be 2 times the
' M/ U% E4 b3 q& jbaseline value in those females who were exposed to3 [& i" f d2 j/ q: a8 M9 M
even 15 minutes of direct skin contact with their male8 I; c) L) e3 ^
partners.6 However, when a shirt covered the applica-
) \; P5 G% O b$ z/ u* Wtion site, this testosterone transfer was prevented.& l8 `3 S2 X( M# ]) L' A
Our patient’s testosterone level was 60 ng/mL,
# p+ O& Q5 F* a+ ?- V8 }: Hwhich was clearly high. Some studies suggest that% n0 M. `# B$ N2 N- P
dermal conversion of testosterone to dihydrotestos-5 R6 Z* [! a. }6 B' D1 K, a
terone, which is a more potent metabolite, is more. S# u" T' s$ E; \) C
active in young children exposed to testosterone
4 }( `2 v: s- l: W; m5 v3 B4 Nexogenously7; however, we did not measure a dihy-
" D) l' J$ I$ ^) ydrotestosterone level in our patient. In addition to
; i2 c4 k7 p; x+ L$ J. _virilization, exposure to exogenous testosterone in
, ~ r$ c- e0 y2 l* t: K$ X* T* kchildren results in an increase in growth velocity and8 x& \4 p- S S3 y
advanced bone age, as seen in our patient.+ N+ r. |( q- F7 [! }
The long-term effect of androgen exposure during1 ^6 _# u7 P4 [* p. L
early childhood on pubertal development and final
3 ^! N; B2 f: e3 s; Q. O/ Q" tadult height are not fully known and always remain
5 G. F* N& R/ p) h* ?8 Ia concern. Children treated with short-term testos-% \5 J9 o3 Z) q6 @0 U1 w+ d2 R k& [
terone injection or topical androgen may exhibit some
7 o& e! _5 A- j) `5 j; Q' Eacceleration of the skeletal maturation; however, after$ Y) }. r) x, r* _
cessation of treatment, the rate of bone maturation
+ s7 V+ ^: `2 K Q# I3 i; a$ pdecelerates and gradually returns to normal.8,9
2 K! _" c, w0 xThere are conflicting reports and controversy' I, S2 w$ n' h+ B5 @% G9 N
over the effect of early androgen exposure on adult0 t" E$ e' Z* y
penile length.10,11 Some reports suggest subnormal" z1 K) y! t. O1 d, z" r# Z
adult penile length, apparently because of downreg-: w0 K( Y( p" F: A! j( S- Z
ulation of androgen receptor number.10,12 However,
3 k* J, l x/ ~5 o0 xSutherland et al13 did not find a correlation between u; e3 i8 H: M- L8 F
childhood testosterone exposure and reduced adult: n. X6 P5 `; c
penile length in clinical studies.4 w% J' d, P7 H' c$ X4 w
Nonetheless, we do not believe our patient is; s4 d: @! t3 D. z
going to experience any of the untoward effects from5 z" W M' y* k! p% D
testosterone exposure as mentioned earlier because
& D5 s2 Q9 s& X$ M: l+ Sthe exposure was not for a prolonged period of time.
0 I3 n5 b: G* |1 |. o. cAlthough the bone age was advanced at the time of
: }" }4 [' {; Adiagnosis, the child had a normal growth velocity at
# V; h1 i; D1 Z3 F9 Y# B4 athe follow-up visit. It is hoped that his final adult
7 `" K: b: \9 Wheight will not be affected.& T$ k" q0 {# q1 T1 h- [
Although rarely reported, the widespread avail-' J! m0 ~1 ]' N
ability of androgen products in our society may2 C+ R: J8 s u7 f% Y8 W
indeed cause more virilization in male or female
) ?0 v% y! i$ k. i6 H+ u! G$ h7 xchildren than one would realize. Exposure to andro-
" {5 l9 Q, F3 G d% g0 E" T) `gen products must be considered and specific ques-
) B# U2 w9 G9 ?# rtioning about the use of a testosterone product or
/ u F3 X+ W d- }% ?$ pgel should be asked of the family members during" f2 Z) @+ x" S- C+ I8 F
the evaluation of any children who present with vir-
! D2 t8 {6 K5 i$ X3 [ilization or peripheral precocious puberty. The diag-) C8 f9 c, ?9 ~. u0 t* A: u8 d
nosis can be established by just a few tests and by
& a) Q& a9 k8 \. J4 V: J* o2 {& R2 @appropriate history. The inability to obtain such a
: L. ^# b0 h o6 ~$ d H9 l1 chistory, or failure to ask the specific questions, may m* T2 @6 e6 @
result in extensive, unnecessary, and expensive
( n3 j' ]& x7 ~9 r3 V1 t* r: G }investigation. The primary care physician should be6 T H. d# K/ e6 ?
aware of this fact, because most of these children+ u( E% x# s( y& h" S
may initially present in their practice. The Physicians’7 H7 ]9 p9 u0 k
Desk Reference and package insert should also put a$ Z. d# S2 s# G, G* F0 @0 T) l
warning about the virilizing effect on a male or0 n: X. {6 M \! \
female child who might come in contact with some-
# R, q I+ }8 p( p) S! Z4 P7 w8 `one using any of these products.
9 n( Q* Z4 C: M8 c5 kReferences/ _+ N( C1 G% f2 m' E
1. Styne DM. The testes: disorder of sexual differentiation
3 n) g$ p# U3 @+ w7 j( }2 Nand puberty in the male. In: Sperling MA, ed. Pediatric8 l, E% H+ I, P* m: q& k: ?0 `
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
# y- g: g/ p# x2002: 565-628.
" L" L0 C% P9 ^. u, `! @9 `2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
w K; `% V) ^puberty in children with tumours of the suprasellar pineal( T# @# N" _" U/ }5 w8 L
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from9 @, s1 z* q1 Z( ?
Topical Testosterone Exposure / Bhowmick et al 5439 n* V0 Y" q# ]( o
areas: organic central precocious puberty. Acta Paediatr.
?4 j+ T) d; ?& l+ b! N2001;90:751-756.1 J& z# @$ r7 M) H; p
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed. s7 ^! f) J! ~# h
Pediatric Endocrinology. 4th ed. New York, NY: Marcel
$ }4 @$ |; h) Y( GDekker Inc; 2003:211-238.
8 {' ] g- o$ x( \$ d4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
/ J) N' _0 E. u* \! d7 S6 odevelopment in a two-year-old boy induced by topical( I4 \5 u+ i7 N7 r
exposure to testosterone. Pediatrics. 1999;104:e23.3 Y2 c# U5 @/ M7 S3 f
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
4 g- y) I" }) g4 N3 f/ \Skeletal Development of the Hand and Wrist. 2nd ed.4 H# b @) m6 h; d
Stanford, CA: Stanford University Press; 1959.
/ Q2 X* T' T9 E6. Physicians’ Desk Reference. Androgel 1% testosterone,
9 t8 |3 f1 E/ D) k' gUnimed Pharmaceutical Inc. Montvale, NJ: Medical
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