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is a significant concern for physicians. Central
! k4 E8 w! u f+ h" vprecocious puberty (CPP), which is mediated" v. l) ~0 F* |6 M# u3 v/ D4 q. b
through the hypothalamic pituitary gonadal axis, has
8 g2 l* n# S8 I9 \* x, ra higher incidence of organic central nervous system @, c' ~- Q( e9 x2 u
lesions in boys.1,2 Virilization in boys, as manifested
, _ P, ]+ \' _by enlargement of the penis, development of pubic
6 ~% ^+ _% @' q& `hair, and facial acne without enlargement of testi-9 t! w2 ^7 {" @
cles, suggests peripheral or pseudopuberty.1-3 We
8 |. ], P' h* f+ Y) qreport a 16-month-old boy who presented with the0 ^- M6 O% l% W
enlargement of the phallus and pubic hair develop-
5 ]3 K; V4 w) l9 Vment without testicular enlargement, which was due
2 Q8 i2 Q# i( a; ]/ K5 S* P$ _to the unintentional exposure to androgen gel used by) c$ Y, A" N, Y' ~+ ]3 k
the father. The family initially concealed this infor-
: H2 f6 v( q( Bmation, resulting in an extensive work-up for this" {+ W+ @5 E/ c6 j+ u
child. Given the widespread and easy availability of
9 @7 G+ Z$ v/ i7 q/ h9 H# Vtestosterone gel and cream, we believe this is proba-
, W3 a9 H. z' V: A& d5 b1 Sbly more common than the rare case report in the+ F1 H- O% x, ~5 S4 f+ A$ p; H
literature.4
4 v* R9 H% V9 F2 v. F2 H7 zPatient Report# T' |. A( e. L( b1 Q) f- H# k
A 16-month-old white child was referred to the
9 f: s9 ^* |4 \/ k* Q: Xendocrine clinic by his pediatrician with the concern) U$ C/ K$ H/ P7 `1 e) J
of early sexual development. His mother noticed# o) g7 I" W. `- ]
light colored pubic hair development when he was) q: C1 n; m+ {
From the 1Division of Pediatric Endocrinology, 2University of
# s) m( S. u8 R. v( M1 D5 h8 @5 M3 pSouth Alabama Medical Center, Mobile, Alabama.% q( V0 Z. {- n) d" T
Address correspondence to: Samar K. Bhowmick, MD, FACE,
( z- Q- P4 c$ p( x- gProfessor of Pediatrics, University of South Alabama, College of
1 l I0 I! u5 G) r0 m' I& ]+ lMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
; z% M" z4 i F1 s3 G( |e-mail: [email protected].! E9 `. A [2 V( i5 g) t
about 6 to 7 months old, which progressively became
# q j" t, y& ?. h$ O2 Ydarker. She was also concerned about the enlarge-; P" |- t8 W5 }$ R, b9 d% o, i
ment of his penis and frequent erections. The child. o$ q- B1 l5 I" d+ C( l( v
was the product of a full-term normal delivery, with
2 v+ b! `7 J0 Y4 K% P/ I, S1 `a birth weight of 7 lb 14 oz, and birth length of: Y" n, z; l3 G1 a( w2 B' b' e
20 inches. He was breast-fed throughout the first year! } ]" ~& A2 z& `/ S& @8 l
of life and was still receiving breast milk along with+ d* _, E+ X2 W4 n+ ^% i( m! o D$ A
solid food. He had no hospitalizations or surgery,
0 q2 J% a+ E5 t0 Q" R |7 Tand his psychosocial and psychomotor development8 s2 k7 y, U. Y& z9 |; q
was age appropriate.* i/ L6 J. d* b4 p
The family history was remarkable for the father,3 R, D" c8 y" n7 y. S' r7 Z
who was diagnosed with hypothyroidism at age 16,& a3 k w d* E `4 @
which was treated with thyroxine. The father’s
! c9 j# G4 [$ {& \4 _8 a$ ?( Lheight was 6 feet, and he went through a somewhat' E$ ?) ~% i5 w X/ x m' W" _1 ]/ R
early puberty and had stopped growing by age 14.1 ~1 w0 r* V& F) c( U q# J
The father denied taking any other medication. The
0 S+ ~) q+ O5 e+ Schild’s mother was in good health. Her menarche/ i$ h5 _. }" r4 T
was at 11 years of age, and her height was at 5 feet
# Z% F' V9 j+ G/ z& M4 c5 L5 inches. There was no other family history of pre-8 A: B$ {+ z' N" w8 P( |: |& W8 `3 X% {
cocious sexual development in the first-degree rela-
$ o# a& o! |. Ptives. There were no siblings.
+ i- x6 r' c) T- j7 I4 ]Physical Examination
& X! k* B9 ^ X, K- B3 vThe physical examination revealed a very active,8 ]5 I" G+ o( H6 I! g1 I9 `/ a
playful, and healthy boy. The vital signs documented/ G) K5 |* h1 H0 k
a blood pressure of 85/50 mm Hg, his length was% z2 y! g3 c, T3 N' h/ i. M
90 cm (>97th percentile), and his weight was 14.4 kg
6 M3 v# `! ^6 ]0 f1 f0 E(also >97th percentile). The observed yearly growth6 t9 ?, J# L& T. h( l
velocity was 30 cm (12 inches). The examination of/ r' }9 G% J# A' S
the neck revealed no thyroid enlargement.3 M. U/ L' J" a% E% ]: p; p
The genitourinary examination was remarkable for
. L# h1 F$ M; k1 C( l ~. ?enlargement of the penis, with a stretched length of
; {% x% @, g2 K( n% g6 V8 cm and a width of 2 cm. The glans penis was very well
9 v q# n5 K' Z+ W' \' u- q" edeveloped. The pubic hair was Tanner II, mostly around
1 M6 ^) g; G) P7 T+ e2 k* u; y540' E& {8 L; y. a" m7 N
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from7 F4 n+ N6 _2 z
the base of the phallus and was dark and curled. The
! N* K4 C7 M! ]6 C( Z* Ntesticular volume was prepubertal at 2 mL each.4 D2 C5 g' U9 N! `2 f; ?
The skin was moist and smooth and somewhat/ o, d+ Z- V9 P% J; P- N) I3 F
oily. No axillary hair was noted. There were no
+ B }6 K! ]# y4 T# F9 t/ Jabnormal skin pigmentations or café-au-lait spots.
; L/ z' J6 L4 R+ l dNeurologic evaluation showed deep tendon reflex 2+1 K( n* a) c- P- a0 L& }" y f2 m
bilateral and symmetrical. There was no suggestion: f. z9 d( l& |: z+ T% w
of papilledema.
3 Z$ Q7 p) q! D" G4 F2 PLaboratory Evaluation$ ^* y3 I+ t2 x, n2 }: f& X$ }
The bone age was consistent with 28 months by
8 { B2 M9 k: M" X. Iusing the standard of Greulich and Pyle at a chrono-" n. ?/ c, d( o' _3 I% V
logic age of 16 months (advanced).5 Chromosomal; N( ^/ K4 u8 c
karyotype was 46XY. The thyroid function test
- f8 H% k( ?9 [7 F( V5 S) Oshowed a free T4 of 1.69 ng/dL, and thyroid stimu-
% k1 {$ x: Q4 e+ f' m$ rlating hormone level was 1.3 µIU/mL (both normal).2 L, i2 N; ~$ g
The concentrations of serum electrolytes, blood' c% W5 ~! f( m* r- V
urea nitrogen, creatinine, and calcium all were @; _( J: ?( Q7 b5 U" T
within normal range for his age. The concentration/ ~5 e2 y# |8 Z a8 D6 U8 g
of serum 17-hydroxyprogesterone was 16 ng/dL
) k X6 A4 k! G% H$ b$ a$ l(normal, 3 to 90 ng/dL), androstenedione was 20: g! `" @, K! o5 L( W/ m' W
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-) G5 Z1 t/ ^5 t$ N9 O; A
terone was 38 ng/dL (normal, 50 to 760 ng/dL)," y1 a, L8 ?8 C% x- d: H7 I
desoxycorticosterone was 4.3 ng/dL (normal, 7 to9 g S9 N* d* h- [7 d
49ng/dL), 11-desoxycortisol (specific compound S), |' k8 a/ i: F2 U7 h5 c. q, E
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-1 p; I2 o1 T+ k! l
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total4 ^0 j% m5 ^) q7 X
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),; B7 Y' }4 s' x* R( [. b& M# u% Q
and β-human chorionic gonadotropin was less than
8 n) i4 J; ]" b6 K, m/ |( @! q5 mIU/mL (normal <5 mIU/mL). Serum follicular
; }; s- D! @: G, I, O+ dstimulating hormone and leuteinizing hormone
+ E3 X D. ~( D8 r, Sconcentrations were less than 0.05 mIU/mL
* `9 b# i" K/ l8 @0 @6 j8 x+ T(prepubertal).
& y3 h( X! C: l. MThe parents were notified about the laboratory7 Q9 j7 H$ S% Y
results and were informed that all of the tests were
, n6 c9 P+ G( M5 q( bnormal except the testosterone level was high. The8 m6 P% p6 X' r. b
follow-up visit was arranged within a few weeks to, U3 ^3 r" |9 K
obtain testicular and abdominal sonograms; how-0 [, O9 [" C [+ D. J7 T. V
ever, the family did not return for 4 months.( J% M' B5 ~4 o1 Z& G' P
Physical examination at this time revealed that the& ^7 d& n, @7 Y; r1 e, \
child had grown 2.5 cm in 4 months and had gained
& {/ ~" z1 s, ~( s* s1 X1 w2 kg of weight. Physical examination remained2 v4 a5 k+ g2 P4 L+ @
unchanged. Surprisingly, the pubic hair almost com-
) _* |2 u& A6 ?0 m9 ]* C9 K+ upletely disappeared except for a few vellous hairs at0 F% w) C( S) k4 S8 z3 O! a/ C
the base of the phallus. Testicular volume was still 2
$ f* [1 i w: a" k! m& imL, and the size of the penis remained unchanged.! E0 r9 \( n7 C" Q5 a m
The mother also said that the boy was no longer hav-3 S: l s$ v' {
ing frequent erections.
5 G$ R3 J1 f2 D. @5 X- yBoth parents were again questioned about use of! d2 \ z! E8 K& B( }& a$ W
any ointment/creams that they may have applied to. l( T2 p! e6 C, N* c' J: E
the child’s skin. This time the father admitted the: z+ C' C: l7 T4 O9 O
Topical Testosterone Exposure / Bhowmick et al 541
H1 K7 E8 n" B5 J8 C* k7 E- r0 quse of testosterone gel twice daily that he was apply-
. F! T' I: R( y2 [0 k6 f# \ing over his own shoulders, chest, and back area for: r! K! K* [& \: s* a) N
a year. The father also revealed he was embarrassed# Q6 f; F0 W' J2 h! P8 J
to disclose that he was using a testosterone gel pre-
% _0 p! |: ~) P$ ]+ qscribed by his family physician for decreased libido
/ ~& t$ R5 Z7 K( e2 k, Vsecondary to depression.% h8 F& Q P0 M0 n
The child slept in the same bed with parents.% Y" W5 V1 _$ ^* K2 B6 e$ b6 u
The father would hug the baby and hold him on his
4 q. ^, r& W& E& jchest for a considerable period of time, causing sig-/ b- p! @$ I! J3 n5 v5 p
nificant bare skin contact between baby and father.
+ ~+ h- R {9 Z* i& N$ |( fThe father also admitted that after the phone call,+ f$ `8 n, A$ z8 F; O" r0 l; ^; k
when he learned the testosterone level in the baby
" \! K3 n# s3 A0 x: w; G) }' k7 [was high, he then read the product information1 O) h8 Y1 K/ f& y1 z$ t- q
packet and concluded that it was most likely the rea-: f) u+ `3 } j6 C
son for the child’s virilization. At that time, they
! O; w/ y1 t8 t q/ O0 ~decided to put the baby in a separate bed, and the/ u% U F7 W, W& O1 f
father was not hugging him with bare skin and had
. U& [4 U) g" s8 ?" k) E* }+ G3 ^been using protective clothing. A repeat testosterone
+ s- W1 H4 P2 B% r0 Y2 m+ itest was ordered, but the family did not go to the
/ A8 r( k9 ~8 r* I% D4 [3 Plaboratory to obtain the test.
2 L+ e$ {0 G. x% ^: T1 aDiscussion9 o5 n4 Y& n6 U
Precocious puberty in boys is defined as secondary2 H, y8 }. b; M* [0 f# s" h- f
sexual development before 9 years of age.1,4, v, f' ^1 Z# g
Precocious puberty is termed as central (true) when
2 A! K. W' Z/ Y8 a% Iit is caused by the premature activation of hypo-
) W7 Q8 L7 B8 k( j- c4 v$ A( R$ z5 Vthalamic pituitary gonadal axis. CPP is more com-
& o9 ?! [1 }7 _, D$ X1 Wmon in girls than in boys.1,3 Most boys with CPP: D) s; a x4 E! A8 w' L4 i
may have a central nervous system lesion that is
0 J; O: [ s2 |7 P8 ]responsible for the early activation of the hypothal-1 D( N2 T0 R( _6 O5 i" U
amic pituitary gonadal axis.1-3 Thus, greater empha-
# C9 y4 Z; v3 @. i# T) q/ I! psis has been given to neuroradiologic imaging in, g7 e; _2 l e A% t# n
boys with precocious puberty. In addition to viril-6 _' K X4 q& T, o# n
ization, the clinical hallmark of CPP is the symmet-1 Q P/ h! T! c6 j
rical testicular growth secondary to stimulation by Q) S7 f' N% _
gonadotropins.1,3: V3 |3 Y5 u6 G2 Z
Gonadotropin-independent peripheral preco-3 k7 p& X" N4 a
cious puberty in boys also results from inappropriate
- s; N/ {' U) i4 G/ ?( Bandrogenic stimulation from either endogenous or( U+ J/ o: |( k5 W" o
exogenous sources, nonpituitary gonadotropin stim-
4 n( \9 M1 Q) I( V' ]ulation, and rare activating mutations.3 Virilizing) f# k1 ^. y$ }
congenital adrenal hyperplasia producing excessive
0 [* E+ \4 x$ d5 B! m) eadrenal androgens is a common cause of precocious& [: |9 ]- f# O+ m, d7 X) V
puberty in boys.3,41 b; ^; b4 K7 ^+ ^, {
The most common form of congenital adrenal
& \! W k; r' chyperplasia is the 21-hydroxylase enzyme deficiency.
- G$ e/ R- }9 _6 ?' vThe 11-β hydroxylase deficiency may also result in
8 ^* a4 o: x% }" F2 sexcessive adrenal androgen production, and rarely,: H9 N0 @! P+ ^8 k/ x
an adrenal tumor may also cause adrenal androgen7 i k& n8 G! E5 u* u1 n2 T
excess.1,3 j' r2 I- b2 Z1 S
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
5 ]) _9 |2 b$ w: |5 t t$ ^# w542 Clinical Pediatrics / Vol. 46, No. 6, July 2007" j! w' O/ `. g
A unique entity of male-limited gonadotropin-- E. k3 p8 O6 L, H2 g' {% c
independent precocious puberty, which is also known0 U% Y; ?( ?, H: K" d4 D* s' f
as testotoxicosis, may cause precocious puberty at a L8 E( o, A2 F, s6 X
very young age. The physical findings in these boys
) g! b s& G8 b( C! Ewith this disorder are full pubertal development,( W% w9 Q8 }4 d) \
including bilateral testicular growth, similar to boys
- \4 ^* D2 M3 dwith CPP. The gonadotropin levels in this disorder' ]8 A, V) @7 O
are suppressed to prepubertal levels and do not show
6 F( y: f" ~" o* W2 E/ o1 w7 Npubertal response of gonadotropin after gonadotropin-
, F# g8 [( {% L" n; j2 f. Q9 treleasing hormone stimulation. This is a sex-linked
. x9 o) m& a& b+ \2 S' R, m" L9 \autosomal dominant disorder that affects only+ _1 |! e6 y# p! c
males; therefore, other male members of the family
6 K& B( @# X |. X0 A- B, Amay have similar precocious puberty.3
% E: o! D$ h3 ^+ b lIn our patient, physical examination was incon-: J, I: W6 f: U, h
sistent with true precocious puberty since his testi-6 r! _ \! O. Q3 W7 r) l) k1 {& w) W
cles were prepubertal in size. However, testotoxicosis
6 U% \4 ^. C! N, m8 S5 f0 Awas in the differential diagnosis because his father2 x/ l! V3 b; l
started puberty somewhat early, and occasionally,
/ v( T1 x0 C6 ztesticular enlargement is not that evident in the
: I5 [; v6 k* A( B. f, E# Gbeginning of this process.1 In the absence of a neg-* |# u- ]! @2 r$ Y% \+ v
ative initial history of androgen exposure, our
- h" J9 V/ D7 i6 E, d! Dbiggest concern was virilizing adrenal hyperplasia,
* ^# J5 e/ ?1 `3 U6 Y% Keither 21-hydroxylase deficiency or 11-β hydroxylase8 M H7 m" r1 V7 W1 Q
deficiency. Those diagnoses were excluded by find-' z& A) z+ V# I( s3 p9 J6 B) d, @8 I
ing the normal level of adrenal steroids.
" h) \% e7 x! D7 j+ zThe diagnosis of exogenous androgens was strongly
0 h3 |0 z7 ^% s+ H( S2 }/ Psuspected in a follow-up visit after 4 months because& }9 Y* A' v/ O& d; y/ i
the physical examination revealed the complete disap-3 W% C! {- U& G6 J( x: ~2 l) |7 _
pearance of pubic hair, normal growth velocity, and" K" c/ s, Z' I) L0 G
decreased erections. The father admitted using a testos- ] a: {, `1 x) m, q' @0 p! H
terone gel, which he concealed at first visit. He was
" i/ v" N/ Q$ ]7 E2 }; Q( Susing it rather frequently, twice a day. The Physicians’3 o( h. x' Y/ g4 R" o3 \( K8 O
Desk Reference, or package insert of this product, gel or
# j+ U: H. z+ h3 o, Q3 H+ Icream, cautions about dermal testosterone transfer to
- ~6 ^; a7 R9 E% ` gunprotected females through direct skin exposure.
+ S' m( v6 e/ Y) sSerum testosterone level was found to be 2 times the
4 z& Z$ r Y% F$ O( s; c1 dbaseline value in those females who were exposed to% h2 \/ n+ X9 s; p
even 15 minutes of direct skin contact with their male
/ a6 l1 K8 u2 K* H6 F) _6 S; h* mpartners.6 However, when a shirt covered the applica-
, O! K' L. p6 a( h3 L, z% F, {tion site, this testosterone transfer was prevented.% t+ x0 o- p" F1 x
Our patient’s testosterone level was 60 ng/mL,9 [; [. @8 o7 M1 j+ E
which was clearly high. Some studies suggest that
" }, @6 P2 z& J7 sdermal conversion of testosterone to dihydrotestos-1 J1 L1 ]* `' A
terone, which is a more potent metabolite, is more
8 B5 b5 P7 u5 U, Mactive in young children exposed to testosterone/ J @2 l2 C$ C
exogenously7; however, we did not measure a dihy-
! B9 _ }8 [2 H1 W" a/ hdrotestosterone level in our patient. In addition to+ K# H' }* d5 K/ s2 p
virilization, exposure to exogenous testosterone in
v; M6 I! X6 J4 k# O# D8 jchildren results in an increase in growth velocity and
4 s8 |* E. X( \6 x0 B8 t* Oadvanced bone age, as seen in our patient.
. s6 s N) A: D3 T# n8 OThe long-term effect of androgen exposure during* L- P+ Y; z/ t8 x& [" W* G
early childhood on pubertal development and final% H& L* f( l# @7 |5 Z" R! {
adult height are not fully known and always remain
$ |7 u2 g, p d: Pa concern. Children treated with short-term testos-
5 O* R0 B' I5 L: dterone injection or topical androgen may exhibit some
& M) [7 o' `8 ~acceleration of the skeletal maturation; however, after7 u; v( e, F9 Z
cessation of treatment, the rate of bone maturation+ F3 `1 ?8 {4 k+ P! m
decelerates and gradually returns to normal.8,9
! v4 M, e% s1 N/ [- b5 SThere are conflicting reports and controversy
4 s. L* w; d9 tover the effect of early androgen exposure on adult
a8 P# N F2 ] W; h4 w O4 Hpenile length.10,11 Some reports suggest subnormal
: y" V7 x8 `, e5 iadult penile length, apparently because of downreg-$ I0 p2 d% T( U* Q2 r& H& M4 \
ulation of androgen receptor number.10,12 However,
7 I0 t# B( l; r+ F/ `+ U) l) ASutherland et al13 did not find a correlation between
" M1 Z& B/ e3 V9 A* v2 pchildhood testosterone exposure and reduced adult7 t+ V5 y6 k6 \% F/ D1 J9 p
penile length in clinical studies.0 f; c! [0 A2 x; {, x! u1 Z$ ]
Nonetheless, we do not believe our patient is6 k0 v n( B+ M" A% I
going to experience any of the untoward effects from4 B v; \2 G- \# Q
testosterone exposure as mentioned earlier because) j5 [3 q/ X4 f: g
the exposure was not for a prolonged period of time.( m, B: x. w5 I1 ^5 ^1 S9 T+ A3 X
Although the bone age was advanced at the time of
: X2 B @9 v, x, _) G5 kdiagnosis, the child had a normal growth velocity at- {4 f: g' x4 y& H1 j7 A9 j: x
the follow-up visit. It is hoped that his final adult& g; e* F0 L9 `: a( i4 C! L
height will not be affected.- s& E B# y, Y5 ]' V1 l/ m
Although rarely reported, the widespread avail-; W( t5 W" G) t0 }" F
ability of androgen products in our society may
7 J" o7 y5 @/ ]indeed cause more virilization in male or female
& d6 J; h& {1 ?+ M' T7 ~! Qchildren than one would realize. Exposure to andro-
* K, r" l! y+ T" G* u& Ogen products must be considered and specific ques-
4 |) F% v2 Z, G* u4 I; j. G$ ntioning about the use of a testosterone product or
" Y2 t+ E0 D) x3 }( ~9 j2 }! S$ f8 ogel should be asked of the family members during' j1 W+ Q+ k/ V$ W/ g
the evaluation of any children who present with vir-0 H: E' ~6 Y- d2 n
ilization or peripheral precocious puberty. The diag-) |2 X! Z) \" j5 E8 T. J) Z
nosis can be established by just a few tests and by
# m( b' c& i8 {0 I. a" G3 M7 Fappropriate history. The inability to obtain such a
% t4 F" Y. G S" {7 g$ shistory, or failure to ask the specific questions, may9 `& Z' ?, a4 ?/ Y
result in extensive, unnecessary, and expensive l9 c8 ~% {# r1 C
investigation. The primary care physician should be
U5 i5 o8 b- V# [7 c8 c& q4 @0 h4 Caware of this fact, because most of these children) {3 U' ^: u" a/ C7 E6 K
may initially present in their practice. The Physicians’3 D' e: J7 b/ J
Desk Reference and package insert should also put a
" o+ I( X3 \1 xwarning about the virilizing effect on a male or4 i5 y' c' o* P, I1 s) S4 F; I
female child who might come in contact with some-0 X7 |0 g( _ x2 g
one using any of these products. @: n! Y0 m3 _- o6 x: r' H' k: ~/ ^
References @$ w. r6 Q/ k- n* L
1. Styne DM. The testes: disorder of sexual differentiation
+ D! M+ Q, _7 w# J# Dand puberty in the male. In: Sperling MA, ed. Pediatric; J; F$ s% M0 B4 i: E( s* \, b
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;( |. i$ v5 f+ k9 I) n. v
2002: 565-628.7 G0 ^8 O5 G& Q$ H8 V8 X
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious0 o1 c& V3 ?* o/ S0 F+ f$ V5 e
puberty in children with tumours of the suprasellar pineal
; E. m) H7 M) ~% H9 L4 c& v5 N7 K P: D$ sat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from8 b G( D) s3 G- P( h
Topical Testosterone Exposure / Bhowmick et al 543
$ s9 {; q" z4 ?+ o C D2 ]areas: organic central precocious puberty. Acta Paediatr.9 ~& L- I; n* h9 Q
2001;90:751-756.
3 c+ r$ W! }! z3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.* `# R/ C. h6 ~# C' U# @
Pediatric Endocrinology. 4th ed. New York, NY: Marcel
" p. `/ Y* D8 r4 y7 B7 G+ SDekker Inc; 2003:211-238.
. f4 d2 p: W8 N% e5 S' c4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual( Y( C; F: Y: Y2 C$ T
development in a two-year-old boy induced by topical+ }; {, d; _$ i5 ]# O# |
exposure to testosterone. Pediatrics. 1999;104:e23.
) \& ]& }+ A, T* h9 Y7 O, m. v f5. Greulich WW, Pyle SI, eds. Radiographic Atlas of5 I0 E) V4 t% _/ |7 p
Skeletal Development of the Hand and Wrist. 2nd ed.* P0 g( k: t# r' V' p+ `3 T
Stanford, CA: Stanford University Press; 1959.3 F5 C8 r. d( d0 R F |( ^$ \
6. Physicians’ Desk Reference. Androgel 1% testosterone,
# W- T: k7 S* J2 ZUnimed Pharmaceutical Inc. Montvale, NJ: Medical# N1 ~/ W% y5 G$ {. z' i) e, C, @
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