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is a significant concern for physicians. Central/ O# s- t: d6 X; x6 U$ G0 z8 J' ]( N
precocious puberty (CPP), which is mediated
2 c" L4 a# e- b( P! s& t2 i/ vthrough the hypothalamic pituitary gonadal axis, has; B7 K6 e. q6 D; S4 c K
a higher incidence of organic central nervous system
0 M$ i" O5 S5 w. x7 Elesions in boys.1,2 Virilization in boys, as manifested4 |& w) [( `) ^& }0 l: p q! n
by enlargement of the penis, development of pubic! A1 C5 _' U. |* F- e
hair, and facial acne without enlargement of testi-6 m v+ j& f7 H) d6 V
cles, suggests peripheral or pseudopuberty.1-3 We
- M/ \; P. S2 J% Areport a 16-month-old boy who presented with the
! a! ?( E% E! R& F( [9 L/ J( M: W' benlargement of the phallus and pubic hair develop-
: I/ s7 G+ r6 @1 Sment without testicular enlargement, which was due
. G f' w7 k, D/ G z1 ~! u/ t/ Z1 ^to the unintentional exposure to androgen gel used by
0 ^, s4 l$ n' P6 ?; [, B+ J, ?the father. The family initially concealed this infor-
5 `; }: f* I: Y0 gmation, resulting in an extensive work-up for this
& i/ T- w8 i9 A0 r' N" {child. Given the widespread and easy availability of4 B' u" {& L s% Q5 T
testosterone gel and cream, we believe this is proba-, J3 D6 Z2 W0 b# l
bly more common than the rare case report in the
/ P5 `0 e! L& D: K% ~literature.4
5 K, U8 x* D9 A7 tPatient Report
% h4 u t3 v; _6 a8 J) YA 16-month-old white child was referred to the
5 Z0 {5 P; ^8 X6 a& D. Y+ ^& oendocrine clinic by his pediatrician with the concern6 h/ `' B# Q9 @& q b
of early sexual development. His mother noticed. o R2 x+ |0 l6 ^7 s' a- `
light colored pubic hair development when he was
; e0 o6 P$ K8 L2 Z0 v K6 E) iFrom the 1Division of Pediatric Endocrinology, 2University of
& M( S7 K: b7 _" ISouth Alabama Medical Center, Mobile, Alabama.
& \) C' z* s, e5 GAddress correspondence to: Samar K. Bhowmick, MD, FACE,( c7 q6 e3 y8 P% `. N& Y
Professor of Pediatrics, University of South Alabama, College of! H/ S+ h' Z: w- q0 k2 C# j5 o
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;7 y. E* Y$ X* x$ R2 H" w
e-mail: [email protected].
5 s `- F- k; A5 I1 l; T" y/ qabout 6 to 7 months old, which progressively became
& _+ s- B1 y& C4 K1 K% x/ B* Zdarker. She was also concerned about the enlarge-& l8 T/ f V8 x. T- D
ment of his penis and frequent erections. The child4 m0 \; J! A% r( v3 p1 O* z" a" k5 U
was the product of a full-term normal delivery, with
) N4 B% O* f) p7 t% \1 Wa birth weight of 7 lb 14 oz, and birth length of
1 \. v3 {$ k# z- }# [& Z. \20 inches. He was breast-fed throughout the first year
5 i. t. x! |) _$ I+ Y& y* ^" aof life and was still receiving breast milk along with
% D5 p( M* | |- Vsolid food. He had no hospitalizations or surgery,
6 E! O. o- P% J8 l! uand his psychosocial and psychomotor development
! h$ P- P5 W9 C* ^1 \: Y. u/ a5 Fwas age appropriate.: p/ O0 m% D% ]* n# l' F& \( y
The family history was remarkable for the father,$ } c$ p, m0 W6 q) Z+ }, d
who was diagnosed with hypothyroidism at age 16,$ j6 {. [1 v* e
which was treated with thyroxine. The father’s
# f: ?4 g5 I: b7 k/ D- {7 N7 @, S6 Oheight was 6 feet, and he went through a somewhat
0 F5 d. Z5 Y9 ]* ?; Y( iearly puberty and had stopped growing by age 14.) i. \( K6 P# u ?4 J6 f; j, O
The father denied taking any other medication. The
! a" Q% u9 A5 W. @* e+ n4 Rchild’s mother was in good health. Her menarche: Z8 j3 x# }3 K
was at 11 years of age, and her height was at 5 feet3 V. Y$ K8 D4 o. p# i1 j2 ^0 I6 q! u
5 inches. There was no other family history of pre-
! ?5 l; `. h# w& E: }* n) x7 f6 L. Kcocious sexual development in the first-degree rela-( B: c( \* o* [% v' I8 v
tives. There were no siblings.
9 X9 Q Z# ]* L4 z2 O5 JPhysical Examination
) ]* a9 Q- f. c/ ~The physical examination revealed a very active,) i( v/ _; B, S& k) A8 M
playful, and healthy boy. The vital signs documented W7 S$ q" g5 Z
a blood pressure of 85/50 mm Hg, his length was; A4 ^7 ~: U! W7 G' U2 E" L* `
90 cm (>97th percentile), and his weight was 14.4 kg
3 r! K% n5 a a' k9 O& n9 V! M E(also >97th percentile). The observed yearly growth
5 ^" [ h- I; Rvelocity was 30 cm (12 inches). The examination of
- x, Q2 _; {# {* f- D0 ~the neck revealed no thyroid enlargement.
4 h H- l% @' R) \The genitourinary examination was remarkable for9 h6 G+ c- m. A
enlargement of the penis, with a stretched length of9 P; ?- `3 o" A0 l! }7 @9 s
8 cm and a width of 2 cm. The glans penis was very well
, `6 x9 U9 q; D y1 ideveloped. The pubic hair was Tanner II, mostly around$ x( j6 v+ m7 Y3 G
540" }' {0 d" X+ ~0 s: `) F' Q
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from0 o5 c0 B; ^5 m) C
the base of the phallus and was dark and curled. The1 ~; b2 |) ?9 h' y" r2 r0 t
testicular volume was prepubertal at 2 mL each.
8 G& }5 U) h( DThe skin was moist and smooth and somewhat
' z, @9 f* w ?5 N3 C$ b1 Y8 |oily. No axillary hair was noted. There were no+ ?* l N& l9 j1 x
abnormal skin pigmentations or café-au-lait spots.
5 U) S) ~0 B5 Z) aNeurologic evaluation showed deep tendon reflex 2+& R+ e9 g1 v1 J. t8 m Z
bilateral and symmetrical. There was no suggestion% `$ z6 K) s0 w# ]1 }
of papilledema.
3 O q: l n. T8 |6 y2 j- X; c( c: ILaboratory Evaluation
' H% p }) Q' J* H _) c5 qThe bone age was consistent with 28 months by
+ ?$ ]9 R: h- r) _0 m) |$ a. I6 p4 Cusing the standard of Greulich and Pyle at a chrono-* x8 I9 T) e6 G+ y5 A2 X9 ~% d$ ^1 Z
logic age of 16 months (advanced).5 Chromosomal
* [; {$ Y! O* A; h. b5 Zkaryotype was 46XY. The thyroid function test
. T. a* P* a' h0 {4 qshowed a free T4 of 1.69 ng/dL, and thyroid stimu-, [: A* B- _ d0 k
lating hormone level was 1.3 µIU/mL (both normal).: t7 Y( ]8 k V
The concentrations of serum electrolytes, blood
7 x9 E. P3 s, s& y4 B' Lurea nitrogen, creatinine, and calcium all were! X& K, U: @; \& j; |
within normal range for his age. The concentration
% Q: ]3 m% t" A# _- W* zof serum 17-hydroxyprogesterone was 16 ng/dL
) Q! I( D! c5 B(normal, 3 to 90 ng/dL), androstenedione was 20
0 k* I* z- c, S, X7 v% j" H7 Ing/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
6 n% L! R9 _$ y6 ~1 Vterone was 38 ng/dL (normal, 50 to 760 ng/dL),& _% Z( L! l3 l
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
# A! `4 K7 T1 G \! \6 s49ng/dL), 11-desoxycortisol (specific compound S)
- A9 ^/ O1 F4 J% Swas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-& d+ }6 ]4 A) j& Z1 Q* w
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total- }1 E$ i9 k! s+ [
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),0 `- f8 ?' m( w) i% Q3 x. @' j4 K
and β-human chorionic gonadotropin was less than2 ?' d! z. m# w
5 mIU/mL (normal <5 mIU/mL). Serum follicular
; }! o4 h/ E1 x4 p) Astimulating hormone and leuteinizing hormone$ D* }* o6 J; J' o
concentrations were less than 0.05 mIU/mL
! D5 v. l" G8 ~(prepubertal).. L- q2 E( a: \" [% H3 F3 f' i
The parents were notified about the laboratory
6 Q# M7 y1 I6 K( U1 A7 c8 Tresults and were informed that all of the tests were$ n/ Q5 W3 G" { z( w9 q$ E
normal except the testosterone level was high. The
1 Y" v7 j4 l6 Z5 e+ u$ efollow-up visit was arranged within a few weeks to
3 v% T+ E, k! I1 r, d4 i# h9 nobtain testicular and abdominal sonograms; how-
1 H) y' q* Q7 `& Fever, the family did not return for 4 months.
& w4 j" E7 ~3 GPhysical examination at this time revealed that the
1 ^/ N9 n+ Q9 \, L& gchild had grown 2.5 cm in 4 months and had gained) t. [5 V; R l5 X
2 kg of weight. Physical examination remained
7 ~0 Z% I( t1 Z& {4 P- Zunchanged. Surprisingly, the pubic hair almost com-, V, B; F* ~$ w- c" _/ Y/ ]
pletely disappeared except for a few vellous hairs at
0 K6 A9 u0 `7 S4 m& qthe base of the phallus. Testicular volume was still 2
: @0 W2 \0 z, n; H; y7 YmL, and the size of the penis remained unchanged.5 ^& F; H7 E4 P$ H) {
The mother also said that the boy was no longer hav-+ U1 x. d, a1 V- J n
ing frequent erections.% d; c9 x* |2 j1 c" x- b
Both parents were again questioned about use of5 f: X5 Y& N& N, G. a5 i% y+ Y
any ointment/creams that they may have applied to
! k, G3 ^3 E+ K5 Y7 x) {the child’s skin. This time the father admitted the
. ^ @3 P, x4 N# \* G4 ITopical Testosterone Exposure / Bhowmick et al 541
/ T! V( k i4 [, \) ?use of testosterone gel twice daily that he was apply-; C( b" h, g/ e
ing over his own shoulders, chest, and back area for
8 F8 K9 l+ M$ f6 x& ^a year. The father also revealed he was embarrassed
/ H& p. ~: {( v! v# w e, N5 vto disclose that he was using a testosterone gel pre-) ?& _, X2 }' O# \9 [, B
scribed by his family physician for decreased libido
! N" |4 _ S7 i3 s7 W% d) wsecondary to depression.8 Y0 K: [4 }. {( V
The child slept in the same bed with parents.
( a7 R: Q/ n- n+ {$ U: qThe father would hug the baby and hold him on his- {! a2 n" ]" z8 x7 ?4 c( ]
chest for a considerable period of time, causing sig-
/ A9 M4 b2 ~- i# k( m- q5 q2 D. C6 cnificant bare skin contact between baby and father.
6 n* A! g( J- \, hThe father also admitted that after the phone call,
8 A( e1 s; I! M% m$ v; {1 q# b0 h" Twhen he learned the testosterone level in the baby
; v" k3 P) U. T awas high, he then read the product information; S3 f8 `6 n/ Y+ M! K1 a1 U
packet and concluded that it was most likely the rea-; ]" @7 k+ B& t6 v4 T) V+ g; y
son for the child’s virilization. At that time, they
* P: a1 x7 T( v0 c6 x! K5 K0 ]decided to put the baby in a separate bed, and the1 o( s* Y, v% ^% _3 [
father was not hugging him with bare skin and had
7 d8 C5 w0 l/ L8 [& Sbeen using protective clothing. A repeat testosterone6 `* Y+ C: O, O2 \
test was ordered, but the family did not go to the
; W# s% N) P c3 tlaboratory to obtain the test.1 {7 E7 f; ~( Y
Discussion+ |7 L0 e; S+ o: J3 ^
Precocious puberty in boys is defined as secondary* o+ @+ G# d( ~) P) Q1 _( S
sexual development before 9 years of age.1,4
( K! J2 C4 Y. f8 p+ L8 [' B9 ]" TPrecocious puberty is termed as central (true) when
1 }8 y1 t V- Git is caused by the premature activation of hypo-
3 z. N" K, ^' Z5 }" N3 h* Q+ Gthalamic pituitary gonadal axis. CPP is more com-
1 a& o5 Z& N" R7 tmon in girls than in boys.1,3 Most boys with CPP
) [( q, a, Q* O& d9 Smay have a central nervous system lesion that is
) L& P1 I. I: [' k! ]8 eresponsible for the early activation of the hypothal-
& X& U {; o- t1 m$ N( W4 e3 Tamic pituitary gonadal axis.1-3 Thus, greater empha-' \2 P C3 J+ r+ t3 k
sis has been given to neuroradiologic imaging in
* g6 U, j0 x6 yboys with precocious puberty. In addition to viril-
: c4 Z0 V5 P) _/ @' Z- i( A! I Bization, the clinical hallmark of CPP is the symmet-& ]+ x+ Q- y) u$ O& b
rical testicular growth secondary to stimulation by
) b1 R6 Z/ O$ D4 |! b1 @gonadotropins.1,35 B6 s2 f( h! {( R; l& P
Gonadotropin-independent peripheral preco-5 _5 h4 ?8 F7 P! @- y4 r3 X# I1 ]
cious puberty in boys also results from inappropriate
' e# X2 Y3 m8 z1 c& Z% ]: L+ pandrogenic stimulation from either endogenous or: K' i7 c. i6 L3 S0 c
exogenous sources, nonpituitary gonadotropin stim-2 L- y3 e- l" @2 |
ulation, and rare activating mutations.3 Virilizing) Z, c+ `2 ^1 Z1 O) u/ B4 e8 |
congenital adrenal hyperplasia producing excessive
3 }7 S$ x. \+ F2 Eadrenal androgens is a common cause of precocious7 g7 B$ P7 _9 ~) F
puberty in boys.3,4
: Z6 @3 Z. @6 O+ ZThe most common form of congenital adrenal
% n8 j( p8 X8 }; Dhyperplasia is the 21-hydroxylase enzyme deficiency.
; l8 g' ~* ]& o0 H) d7 \% }) g" E% kThe 11-β hydroxylase deficiency may also result in/ ^6 v2 f8 Z$ l
excessive adrenal androgen production, and rarely,4 W/ ~3 U% U( [2 g: X' A& [: ]
an adrenal tumor may also cause adrenal androgen- \, ]( v, p! l$ B3 y+ @+ N. p0 V
excess.1,3
, M0 r# G5 m! [0 Rat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from4 P/ A* f3 N( `" `: O f
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007 Y/ h0 t7 ?! @: f2 ?/ s" m
A unique entity of male-limited gonadotropin-
9 P0 G: |* Q* A* R7 qindependent precocious puberty, which is also known& P8 E7 a+ [% z4 Y" t
as testotoxicosis, may cause precocious puberty at a
, D1 J* v' h; I' Fvery young age. The physical findings in these boys
7 Y+ n" m! C( X+ {. d" Fwith this disorder are full pubertal development,
, j U6 Q+ Q2 W; A* L0 ^1 p5 Eincluding bilateral testicular growth, similar to boys1 G3 U* O9 v. y/ F8 Z. P) @
with CPP. The gonadotropin levels in this disorder1 U% F! _: h& j7 q9 @) g5 F
are suppressed to prepubertal levels and do not show4 s9 V% t( r! Y
pubertal response of gonadotropin after gonadotropin-, l6 |* [7 w! x( A
releasing hormone stimulation. This is a sex-linked; f" e4 Q* P# h- v7 p1 H p3 k
autosomal dominant disorder that affects only9 ^2 A3 I+ l2 b3 c% b4 t
males; therefore, other male members of the family9 `4 |- h! v( r5 g
may have similar precocious puberty.3- a5 T0 h+ |: G; R, |' i
In our patient, physical examination was incon-
- u8 q9 ]3 w0 o# Nsistent with true precocious puberty since his testi-
' J/ g! b% _2 b! M! l; |) V" K+ ccles were prepubertal in size. However, testotoxicosis
+ m& E$ |. |% b- x/ Cwas in the differential diagnosis because his father
! I1 M2 B' Y# j* o8 s$ K% fstarted puberty somewhat early, and occasionally,$ e, s( @$ X1 ^+ A7 T9 D
testicular enlargement is not that evident in the
9 e4 i7 L; ^+ y9 O9 z8 X; G# }. H0 ~beginning of this process.1 In the absence of a neg-4 t! M8 [+ p6 P$ X g( o6 H/ k% a( S( o
ative initial history of androgen exposure, our5 [1 d) B* t% I0 q
biggest concern was virilizing adrenal hyperplasia,) @- Q3 c$ x1 O) n: \
either 21-hydroxylase deficiency or 11-β hydroxylase9 x- D/ a& t7 }" s; _, U
deficiency. Those diagnoses were excluded by find-5 i% W+ |8 W$ `6 H3 R0 ~- M9 e
ing the normal level of adrenal steroids.
" j T, \9 Y# lThe diagnosis of exogenous androgens was strongly
9 m {+ Y# L1 Ysuspected in a follow-up visit after 4 months because7 d6 l3 ?: z& V* ~5 e/ U
the physical examination revealed the complete disap-; O! | M5 @5 q* M$ u
pearance of pubic hair, normal growth velocity, and9 e9 M, b& A8 m! `
decreased erections. The father admitted using a testos- f# j$ ?- \% V1 k) l9 i9 u7 W
terone gel, which he concealed at first visit. He was
/ I4 O+ b2 j- `4 [, j; Q5 g+ ousing it rather frequently, twice a day. The Physicians’
) E ?& Y' d4 Y: p6 k |$ e' C6 ]4 B/ gDesk Reference, or package insert of this product, gel or
3 G$ Q7 Q& {1 x) W8 K) d0 gcream, cautions about dermal testosterone transfer to) g: d& Y s# p/ O" R3 s
unprotected females through direct skin exposure.
0 q' ^- j- n. l$ e6 d8 sSerum testosterone level was found to be 2 times the2 F1 e3 B7 {, G
baseline value in those females who were exposed to
) q; J# d( q9 weven 15 minutes of direct skin contact with their male
' D1 e( i6 {, O7 Qpartners.6 However, when a shirt covered the applica-
) w; w7 z" \* _0 q: z2 Stion site, this testosterone transfer was prevented.' U9 h8 g# m) \
Our patient’s testosterone level was 60 ng/mL,9 f1 J3 o6 y" u V
which was clearly high. Some studies suggest that
. n; i3 {/ b4 Mdermal conversion of testosterone to dihydrotestos-) ]1 K$ M! m' {+ Z" i6 K _
terone, which is a more potent metabolite, is more3 c/ W% ~2 c C! B
active in young children exposed to testosterone
6 k5 o+ w8 X! \2 b( c: n" kexogenously7; however, we did not measure a dihy-
0 o$ U B# @! H( mdrotestosterone level in our patient. In addition to1 r- z4 o7 e& M
virilization, exposure to exogenous testosterone in+ f7 Q5 X; }$ R: e' y! ?/ {+ `
children results in an increase in growth velocity and8 t* X+ `5 m1 L2 `
advanced bone age, as seen in our patient.4 W! v/ n: p% S+ d. t
The long-term effect of androgen exposure during
: i* Q4 A1 J8 R( f+ ]7 y. ^early childhood on pubertal development and final
3 B+ F, Y3 n* i0 `adult height are not fully known and always remain
3 A# q1 N9 | i$ w7 F+ \/ sa concern. Children treated with short-term testos-
# M; t: j1 R0 o' Rterone injection or topical androgen may exhibit some2 U! q; ~: q; C( ]2 _( V2 f' ]" p( x
acceleration of the skeletal maturation; however, after
3 Z' v* Q0 C3 N. H2 C) _cessation of treatment, the rate of bone maturation: ~( Z. T/ M7 q
decelerates and gradually returns to normal.8,9
8 u* D9 c& K" G: d, g% j3 [( T0 xThere are conflicting reports and controversy
. K Z) } P' A% u/ W+ o4 Tover the effect of early androgen exposure on adult
# W8 l% p4 o, O$ ?( lpenile length.10,11 Some reports suggest subnormal
( O& t0 b' f7 z' V Padult penile length, apparently because of downreg-0 G# x {( m7 ~5 ^, l5 f8 E8 c u6 v
ulation of androgen receptor number.10,12 However,
- |& h& Q. V: n4 [* E/ ISutherland et al13 did not find a correlation between
- U \ R* ~! q" w/ c# ^# E/ lchildhood testosterone exposure and reduced adult
9 n% k; S; t( M, J( e1 Zpenile length in clinical studies.7 t: Y- N9 I& A. C1 C
Nonetheless, we do not believe our patient is: t S, o+ Q; Q1 w
going to experience any of the untoward effects from
: M- ?% Y! X! k+ _testosterone exposure as mentioned earlier because
0 `. a- U& z1 `. f+ K+ m( vthe exposure was not for a prolonged period of time.6 I0 v" x1 l- L5 ?
Although the bone age was advanced at the time of
7 o; E! l* D" R! s1 j" |diagnosis, the child had a normal growth velocity at9 j( B0 @$ c- M
the follow-up visit. It is hoped that his final adult: |/ B) S" O8 R# h6 F
height will not be affected.
/ I# ^9 ]$ k# k& i# S( JAlthough rarely reported, the widespread avail-* C- }( F7 m. U& s) K
ability of androgen products in our society may5 {' e; r* S% p9 @. v/ x6 x& E
indeed cause more virilization in male or female
9 w+ ?- W+ L+ V( h$ echildren than one would realize. Exposure to andro- ~ }, C" \$ H
gen products must be considered and specific ques-7 F, i9 j. Q1 s: l0 \
tioning about the use of a testosterone product or0 E) ?* Q. c' \, a" t3 ]
gel should be asked of the family members during% x# m3 u7 J) d! |5 N
the evaluation of any children who present with vir-
) @) `/ ^ P+ s* i6 R; A2 zilization or peripheral precocious puberty. The diag-
5 o4 Y+ A7 a' Lnosis can be established by just a few tests and by
+ x0 S6 w0 Z, c/ U# Q, g! Bappropriate history. The inability to obtain such a' }3 R9 l$ Z( s( \/ S- B5 R
history, or failure to ask the specific questions, may
L2 @- X3 ?$ F7 Bresult in extensive, unnecessary, and expensive( G o. {! Y* \* S
investigation. The primary care physician should be
# n2 }$ j) M3 n* Q2 a/ U1 J8 Oaware of this fact, because most of these children
) m L8 [7 a& |. z+ |may initially present in their practice. The Physicians’+ E3 ?3 ]3 N% r* ^% L: O' m
Desk Reference and package insert should also put a, a# w2 b c8 O- D& Y/ I8 n2 Y
warning about the virilizing effect on a male or
) v& x4 e4 a v- W4 lfemale child who might come in contact with some-
' T2 E1 f4 s& E$ M8 Gone using any of these products.
. n% B+ n$ k. h0 C: i, ?# t5 ^References1 x8 m% |3 M0 E" n4 F& T& G+ ^! g. D
1. Styne DM. The testes: disorder of sexual differentiation: S8 W6 E. M( G$ B% ?. Q3 c
and puberty in the male. In: Sperling MA, ed. Pediatric' \: M7 a% C5 a2 t3 c) |% z% O" P
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
$ D0 ?! Z& c _. b* `2002: 565-628.
, ]7 D9 } ~! p* z* K0 U4 C2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
' H, f! Z; Z8 ^0 I% ipuberty in children with tumours of the suprasellar pineal
; [6 `0 V+ j, r* B, ?at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from' A \. y; v K5 L
Topical Testosterone Exposure / Bhowmick et al 543
2 r. Y2 O) n8 R" D$ A0 `+ Dareas: organic central precocious puberty. Acta Paediatr.( ?6 {) v7 n1 X2 i, s7 H4 a6 c
2001;90:751-756.+ k- A) D; v3 {. O8 J% `. c7 J- _
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.( M0 ~7 t/ j5 @0 r
Pediatric Endocrinology. 4th ed. New York, NY: Marcel" A/ x3 p1 V3 V: y) z
Dekker Inc; 2003:211-238.- P( m" ]3 O* W4 U$ K3 X% v0 |
4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
5 x7 }5 M8 J. k) C1 `9 ldevelopment in a two-year-old boy induced by topical
3 U+ v6 \/ [ D2 C6 Cexposure to testosterone. Pediatrics. 1999;104:e23.
' ]5 N# d, B- i1 @; m, v: _5. Greulich WW, Pyle SI, eds. Radiographic Atlas of# G, [- e0 [3 o& B/ P+ n+ D
Skeletal Development of the Hand and Wrist. 2nd ed.
# E/ `3 H$ y5 F+ N6 D4 QStanford, CA: Stanford University Press; 1959.
) k0 a* d5 S( K* y- D. X6. Physicians’ Desk Reference. Androgel 1% testosterone,
: r+ {, z/ J& H0 ?' |Unimed Pharmaceutical Inc. Montvale, NJ: Medical
4 b% D& p$ ? D8 R3 vEconomics Company, Inc; 2004:3239-3241.
- r" W! k) x7 c7. Klugo RC, Cerny JC. Response of micropenis to topical
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