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is a significant concern for physicians. Central4 d4 ?5 g/ b7 s0 i, M. ^7 a
precocious puberty (CPP), which is mediated# H; K% B2 R5 B }8 H9 ^4 L8 W
through the hypothalamic pituitary gonadal axis, has
# G1 B" ^: ~$ g) |a higher incidence of organic central nervous system1 _/ W4 A0 H* S V, i& Y' I- X( s8 Y
lesions in boys.1,2 Virilization in boys, as manifested; `% J) K8 E) {6 w9 l
by enlargement of the penis, development of pubic
# A2 [- }8 p$ p3 S7 ghair, and facial acne without enlargement of testi-* d* T# h m* S O& f
cles, suggests peripheral or pseudopuberty.1-3 We
9 R4 d6 P, j5 ereport a 16-month-old boy who presented with the3 V ]5 P- p R. G) h$ B
enlargement of the phallus and pubic hair develop-
& D. M4 M+ q. C. v4 N9 C& {. ~ment without testicular enlargement, which was due" X- n* ]9 J( }7 U0 U# i5 ]' d
to the unintentional exposure to androgen gel used by; h5 ?* ^' }+ |' g
the father. The family initially concealed this infor-4 K* ~1 h: A4 I6 h/ P& g P5 Z- F
mation, resulting in an extensive work-up for this
8 ^# X3 Y9 _; Hchild. Given the widespread and easy availability of# f% j4 @ B, T4 t
testosterone gel and cream, we believe this is proba-
; M! u8 c, B/ N! V3 _bly more common than the rare case report in the* v# `$ m4 d B( e- D6 [2 R
literature.4
: ~+ c$ J3 O3 |: i2 T4 xPatient Report
- @1 k5 M0 m5 X! m# YA 16-month-old white child was referred to the
& L/ b6 A+ T* w1 n% Zendocrine clinic by his pediatrician with the concern" ?- ^: x0 W4 [) q2 {1 x
of early sexual development. His mother noticed, h: `2 i E/ T; W8 f
light colored pubic hair development when he was) K# |( C) t. ]1 S; n1 D* G& K
From the 1Division of Pediatric Endocrinology, 2University of
& M# f5 x7 @1 c# E5 D4 F1 r8 FSouth Alabama Medical Center, Mobile, Alabama.
6 M2 C2 |, z+ y: C! |* E8 y* v# IAddress correspondence to: Samar K. Bhowmick, MD, FACE,
: _+ ^) F3 Z& K3 Q2 N- iProfessor of Pediatrics, University of South Alabama, College of
0 U, [0 T' i3 q, Z2 X% uMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
) |' m9 N3 H7 v2 X5 pe-mail: [email protected].
2 Q# A! h/ P# j& b* @, h$ j; A% }about 6 to 7 months old, which progressively became
6 o \$ A2 j, F* ^& Z& p3 J- Xdarker. She was also concerned about the enlarge-( i- w" ?! I# H0 @; B8 y4 y( Z
ment of his penis and frequent erections. The child
" \1 u! S/ F7 X9 ^/ b8 Rwas the product of a full-term normal delivery, with- U; {3 V3 O) |. n
a birth weight of 7 lb 14 oz, and birth length of
4 h/ R6 j4 k. V; C' S' D5 C! y: v20 inches. He was breast-fed throughout the first year [( m" T0 y5 P' x6 @
of life and was still receiving breast milk along with
0 ?3 z: ~4 G% N- K& rsolid food. He had no hospitalizations or surgery,7 c$ {) d2 R3 g* f2 o+ f I
and his psychosocial and psychomotor development+ y+ k3 A4 K& F& d
was age appropriate.6 l( C- _0 `( r' E! E1 d
The family history was remarkable for the father,6 ~+ c. u8 U. M8 B4 ^
who was diagnosed with hypothyroidism at age 16,0 [+ { `2 z; }. W) F5 F8 o
which was treated with thyroxine. The father’s
- Y. n; I3 Y" g( a7 Q4 u- zheight was 6 feet, and he went through a somewhat
" e. E7 _( h# K$ V6 pearly puberty and had stopped growing by age 14.
: c0 j R* {. S8 r1 w- e' R/ bThe father denied taking any other medication. The
9 e* p- j, T/ F% @; b v; Gchild’s mother was in good health. Her menarche% T$ |! ^: q: L8 f# V R
was at 11 years of age, and her height was at 5 feet w5 [$ S/ _& O$ I
5 inches. There was no other family history of pre-
& w$ O ~0 {% acocious sexual development in the first-degree rela-7 m3 A; k4 Q% \6 Q
tives. There were no siblings.
: z5 y: L* ~8 o# I- ~" CPhysical Examination' M2 L% E. s8 u$ O% Q8 Z$ e
The physical examination revealed a very active,
2 g: ]7 i6 X" \4 r5 bplayful, and healthy boy. The vital signs documented
+ g% e9 C4 L3 N* N- V+ e8 v3 u; oa blood pressure of 85/50 mm Hg, his length was
8 C3 I" U% R) A$ ?: D) z: [90 cm (>97th percentile), and his weight was 14.4 kg
6 ~3 z# Q) o" @/ M( i* \7 c(also >97th percentile). The observed yearly growth
+ I9 d" u: z1 G) Z( ^8 u( U6 r! Kvelocity was 30 cm (12 inches). The examination of f; J p8 p% |% H4 B
the neck revealed no thyroid enlargement.8 ?/ d$ _% `/ v. i g- b
The genitourinary examination was remarkable for7 ~+ S) U9 Z" o& p/ ]
enlargement of the penis, with a stretched length of
1 w0 E6 D% o: c0 A- V5 }8 cm and a width of 2 cm. The glans penis was very well9 n( V. [7 _' S3 f9 T7 Z) G9 c" c
developed. The pubic hair was Tanner II, mostly around
~8 D, g8 i% u1 ?3 o* V5406 s# i! ]. |. j F# n* Y
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from5 a0 b* s2 ~' ~% C- {7 f: M5 V0 P
the base of the phallus and was dark and curled. The
5 u( e4 o+ J6 h g- \: Gtesticular volume was prepubertal at 2 mL each.2 V7 V- G( F. l, [! W/ ~
The skin was moist and smooth and somewhat
5 @$ i2 O. ]& N) y0 Joily. No axillary hair was noted. There were no
3 `0 w" l# C( f6 G2 H' Rabnormal skin pigmentations or café-au-lait spots.
% A9 s. ^; c* X, o9 n) KNeurologic evaluation showed deep tendon reflex 2+
1 \ q' R& N3 r+ `- @# @1 Fbilateral and symmetrical. There was no suggestion
) L1 l/ }& W4 U/ m/ hof papilledema.
, C8 J' Z0 D7 L# O8 Z" GLaboratory Evaluation
* T! j& g) m( S o7 U& w: P) ]; rThe bone age was consistent with 28 months by* M# N6 ?3 B- l p
using the standard of Greulich and Pyle at a chrono-
6 U. h' ]7 ~: f a6 ~' J3 glogic age of 16 months (advanced).5 Chromosomal1 Q" N% ?+ j5 w8 e3 t- P O E
karyotype was 46XY. The thyroid function test
3 v8 ~6 e7 M3 qshowed a free T4 of 1.69 ng/dL, and thyroid stimu-5 b9 ^' d7 {1 X+ \# o
lating hormone level was 1.3 µIU/mL (both normal).; \% m$ E! h0 c0 w% A9 K
The concentrations of serum electrolytes, blood" A/ X0 @" q4 }) @% C% t
urea nitrogen, creatinine, and calcium all were
! ? P# Q l1 r' Uwithin normal range for his age. The concentration
) B. A) z. Y& Z* X5 E, M ~of serum 17-hydroxyprogesterone was 16 ng/dL4 p( ?/ J3 H$ Q, r- w% a
(normal, 3 to 90 ng/dL), androstenedione was 20
: i1 p+ ^: ]3 t: r+ g5 Ong/dL (normal, 18 to 80 ng/dL), dehydroepiandros-; U) A! z" h7 w6 g
terone was 38 ng/dL (normal, 50 to 760 ng/dL),8 |! Q. M2 z! @( s4 y/ Q5 z
desoxycorticosterone was 4.3 ng/dL (normal, 7 to8 p& R s' |% t8 j/ G1 s$ o, `
49ng/dL), 11-desoxycortisol (specific compound S)* W0 J) `, o3 J, R
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-9 z0 x0 v. m8 o* X& M5 z
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total1 G3 B) T" k; S9 e' t, `7 t+ q
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
9 C/ d5 j8 c0 h5 Uand β-human chorionic gonadotropin was less than
2 W* U7 s% D6 J; t; [+ I5 S, W5 mIU/mL (normal <5 mIU/mL). Serum follicular
- U! L* f" F# q2 @5 T5 n1 M& ~6 xstimulating hormone and leuteinizing hormone
+ x9 I, J! I: l; I+ c( Z* G! |6 iconcentrations were less than 0.05 mIU/mL( G$ Y" y3 K# ?) }( ]6 b1 O
(prepubertal).
t6 g6 k8 `2 }0 @3 BThe parents were notified about the laboratory
. v% z* w' z8 w% q, ~- dresults and were informed that all of the tests were, D& [( w: l4 I; T8 r# U, E$ R
normal except the testosterone level was high. The+ d1 K9 ?- ^, T7 Y9 @
follow-up visit was arranged within a few weeks to7 Q) w, q9 G# ?( J- O3 h
obtain testicular and abdominal sonograms; how-1 n2 I+ I r$ Y( d& g& }
ever, the family did not return for 4 months.
$ c8 x7 }1 x9 ^8 y' EPhysical examination at this time revealed that the/ o' t& n+ k- O& g. A" r/ T
child had grown 2.5 cm in 4 months and had gained
5 L$ i5 \( Z( m4 K2 kg of weight. Physical examination remained
7 p1 f3 R% ?) Cunchanged. Surprisingly, the pubic hair almost com-& `- ]% r0 g0 b$ k- R% \
pletely disappeared except for a few vellous hairs at
' `7 z; i$ J" }& B* E1 C7 Vthe base of the phallus. Testicular volume was still 2
* s l/ p! `; Q, X* WmL, and the size of the penis remained unchanged.6 n" |/ o6 q6 I/ K% x
The mother also said that the boy was no longer hav-
! @: w- m- Q, I- P5 f# [ing frequent erections.
, K+ i$ @( U* g: v9 K: l* W rBoth parents were again questioned about use of
) X. o6 d. s7 K( l q" T, J6 Zany ointment/creams that they may have applied to+ d1 O. V9 U- I4 X6 H% y
the child’s skin. This time the father admitted the8 ^+ U) G* I( o2 r/ I9 T+ p
Topical Testosterone Exposure / Bhowmick et al 541
# Q- g# I* A+ V2 k( j5 B+ b6 d$ Ouse of testosterone gel twice daily that he was apply-0 f: I" I" |+ k! ^ A6 U
ing over his own shoulders, chest, and back area for
5 H3 C+ Y: ]2 h* ^a year. The father also revealed he was embarrassed
% q0 z& \7 a" Z$ o# N9 P3 ito disclose that he was using a testosterone gel pre-
& F5 @1 K6 |$ O+ ]! o, b Tscribed by his family physician for decreased libido
+ x w" b5 w& Isecondary to depression.+ F% {$ Z- ]+ I6 i
The child slept in the same bed with parents.) t0 Q! e6 ~' d1 E. w9 \3 H
The father would hug the baby and hold him on his
6 V! }& _+ }0 @0 W. lchest for a considerable period of time, causing sig-
! F* w- O7 O* b4 n% Ynificant bare skin contact between baby and father.) U+ P% G& c6 C) e5 v2 z
The father also admitted that after the phone call,( f6 u l9 y6 k+ l- w2 d
when he learned the testosterone level in the baby
7 `; |7 P0 c1 G" I) Iwas high, he then read the product information
# c; q7 _( i |0 p5 {' {( gpacket and concluded that it was most likely the rea-0 s' ~. _9 F" y7 K) d% S
son for the child’s virilization. At that time, they
5 V: W# q" t8 K( b# _ Edecided to put the baby in a separate bed, and the4 E, }8 ]: x8 ^8 H+ L
father was not hugging him with bare skin and had
0 ? S, x% I) W1 Qbeen using protective clothing. A repeat testosterone& D% M+ o- F) E! H
test was ordered, but the family did not go to the
9 L5 x2 d/ N0 L) ^laboratory to obtain the test.
2 w+ F+ @8 G- c- c( S+ q+ LDiscussion$ y1 H% @3 K% I9 T! `& {# V' n
Precocious puberty in boys is defined as secondary
3 q+ u' d% Y8 E) G5 {$ {' dsexual development before 9 years of age.1,4
B6 n) w2 c9 G( g2 |2 Q/ O7 t0 rPrecocious puberty is termed as central (true) when+ |, W( x" E6 U2 @
it is caused by the premature activation of hypo-( m5 L4 h9 s/ M/ H N
thalamic pituitary gonadal axis. CPP is more com-* X( w, V. Y% ^/ S" e) {) l+ v4 V" I
mon in girls than in boys.1,3 Most boys with CPP
3 w% p! k& Q8 N8 z" J3 ^6 k. Wmay have a central nervous system lesion that is: W& L/ W' N7 R/ m! G+ ^
responsible for the early activation of the hypothal-
5 c7 z T0 m0 T3 F( n# t' Qamic pituitary gonadal axis.1-3 Thus, greater empha-
9 F$ N( F) u% S$ u) U/ |% rsis has been given to neuroradiologic imaging in
# U- g P2 L& A4 ` f& @boys with precocious puberty. In addition to viril-
7 V5 N: m @/ j/ F1 c1 hization, the clinical hallmark of CPP is the symmet-
# {( W# [& y' D0 ]4 [rical testicular growth secondary to stimulation by
4 j4 J1 U& Y: s, O( ^9 bgonadotropins.1,3& i+ l. Y3 p- ]3 r
Gonadotropin-independent peripheral preco-2 w0 `- m( R- s/ s) y
cious puberty in boys also results from inappropriate$ I# l7 ?& @5 w% |. E
androgenic stimulation from either endogenous or
]. s. {3 _) uexogenous sources, nonpituitary gonadotropin stim-# S* m9 r! r- O
ulation, and rare activating mutations.3 Virilizing
! H7 ], z `+ `. R$ R# icongenital adrenal hyperplasia producing excessive
1 ]! [: g" G: {adrenal androgens is a common cause of precocious" A8 o6 u4 F# K# E0 t
puberty in boys.3,4# G% _7 _6 v- [3 @# T
The most common form of congenital adrenal
$ J3 T& }" }: Vhyperplasia is the 21-hydroxylase enzyme deficiency.
4 D1 I. O" x/ iThe 11-β hydroxylase deficiency may also result in
/ m$ h3 N# y0 n! Z4 w% Kexcessive adrenal androgen production, and rarely,
u; v: \7 W3 u9 x; {5 b7 L2 jan adrenal tumor may also cause adrenal androgen. v: f" D# c1 [$ ?9 u4 b0 U: X
excess.1,3( j3 G, e, a1 [5 q: d
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from$ m6 U) ]' u, Z: \% k
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
4 k, f7 q7 d6 R" J3 PA unique entity of male-limited gonadotropin-
* q. l' w0 q* P; I& C/ F4 A2 jindependent precocious puberty, which is also known
; @+ |, }$ `% a* ias testotoxicosis, may cause precocious puberty at a' U9 G, H0 `: c6 P$ G; j
very young age. The physical findings in these boys
0 ]7 H3 c( j2 A, y, ]with this disorder are full pubertal development,
( |+ x! M% `, }$ `$ Y1 {including bilateral testicular growth, similar to boys
) {8 l1 Q# Z; M+ r( f! |with CPP. The gonadotropin levels in this disorder
) N3 Y) w O% Q9 \" F/ pare suppressed to prepubertal levels and do not show
) @& Z! g1 y+ h( X) B1 zpubertal response of gonadotropin after gonadotropin-
' R* R3 ?* n: j \6 \/ nreleasing hormone stimulation. This is a sex-linked
' u2 n% E6 r0 J# \2 ^; Jautosomal dominant disorder that affects only
7 h9 h+ | k4 kmales; therefore, other male members of the family" U) H! R7 V2 l" w) v% ^0 f: P9 B+ j
may have similar precocious puberty.33 U; E# y5 K i9 f
In our patient, physical examination was incon-
/ O7 h" `4 F: K8 [7 osistent with true precocious puberty since his testi-
1 t n/ x/ ?; y, }6 P: y3 zcles were prepubertal in size. However, testotoxicosis! Q0 _4 ~& r8 q2 V4 d& [$ j$ C
was in the differential diagnosis because his father
6 ~/ U1 Z# P3 I7 T! M s/ g5 Dstarted puberty somewhat early, and occasionally,# t8 Z' z, D. A) H
testicular enlargement is not that evident in the
( N3 y, F& y+ b5 P3 v# Ybeginning of this process.1 In the absence of a neg-
& Y) O f) h1 D( {. J9 N v% Oative initial history of androgen exposure, our# O" ?& L( o5 ?% r4 f8 q
biggest concern was virilizing adrenal hyperplasia,
( _4 n' }& g/ ~+ ^% G+ A+ ~9 |either 21-hydroxylase deficiency or 11-β hydroxylase
' l3 E; J0 s, E# ]deficiency. Those diagnoses were excluded by find-
' t, K: o+ s+ U7 i. V8 y. king the normal level of adrenal steroids. n: l% P6 J2 c$ e0 E
The diagnosis of exogenous androgens was strongly
2 ?, |1 ?) i; asuspected in a follow-up visit after 4 months because. Y7 A6 `! z5 `% z! S
the physical examination revealed the complete disap-4 D) Q* w8 N4 `3 b2 u7 S
pearance of pubic hair, normal growth velocity, and
8 a, {' {$ ^6 a9 jdecreased erections. The father admitted using a testos-7 j* S3 ^2 a" i( g: x; l6 G" Q% a$ j
terone gel, which he concealed at first visit. He was
7 P6 C: H- m5 B4 I" J Q' qusing it rather frequently, twice a day. The Physicians’
: o: n0 b" Q( Y6 G+ {: C+ I# m* iDesk Reference, or package insert of this product, gel or% x; ~! y. q5 z* {$ F7 T
cream, cautions about dermal testosterone transfer to
" c f5 a% e+ b6 uunprotected females through direct skin exposure.
' |5 [, }$ ?' M' DSerum testosterone level was found to be 2 times the9 M/ r; L% U% C* }+ Z; p+ {
baseline value in those females who were exposed to
0 K+ ^. p( w j: Zeven 15 minutes of direct skin contact with their male
* o. B3 U; ~- E: u5 ?partners.6 However, when a shirt covered the applica-
, m/ n5 J6 }( ation site, this testosterone transfer was prevented.! S3 f8 M: f% V! G! D% z# b! g' L
Our patient’s testosterone level was 60 ng/mL,3 E2 z2 s$ ^* @9 b& s8 C( H6 g- Q
which was clearly high. Some studies suggest that
- ?; E( U7 W4 \- Y) t% odermal conversion of testosterone to dihydrotestos-
- @8 S) s, y7 |* ` Wterone, which is a more potent metabolite, is more. q( q/ C% E- k! a" S" l; o$ ~, ?
active in young children exposed to testosterone
6 N. c1 [+ i# R: \exogenously7; however, we did not measure a dihy-0 l* t1 e K) j# V# w' ~# _" h8 X
drotestosterone level in our patient. In addition to
) F/ e7 P( r. p2 O1 \virilization, exposure to exogenous testosterone in
& L% ?8 j' l$ \+ schildren results in an increase in growth velocity and
9 ]$ y8 U0 e, X0 Q8 Vadvanced bone age, as seen in our patient.
: B' m2 ^$ [% M. Q/ ]; EThe long-term effect of androgen exposure during
- G8 b' ^8 I; n7 D+ jearly childhood on pubertal development and final
+ [6 n) j9 X- T2 D3 Iadult height are not fully known and always remain
0 a% Q$ o$ u: l$ c- y9 p' Fa concern. Children treated with short-term testos-- F' K* o& r8 d9 X' B; F" e+ K
terone injection or topical androgen may exhibit some: @5 V% {. f8 g3 h
acceleration of the skeletal maturation; however, after( H. Z! A9 W+ ?& M9 [) V
cessation of treatment, the rate of bone maturation
3 }1 E; C u/ h4 A' |decelerates and gradually returns to normal.8,9
- C! C- V$ L* Z& LThere are conflicting reports and controversy
/ ~- ^, b% h0 `7 f2 ^9 Nover the effect of early androgen exposure on adult
) O- y" t9 D2 E% p) Kpenile length.10,11 Some reports suggest subnormal8 g5 ?8 _2 Y8 N" R9 x
adult penile length, apparently because of downreg-
7 v& s/ S& |6 l- N/ u3 }9 bulation of androgen receptor number.10,12 However,
. \1 g' M) w/ v! GSutherland et al13 did not find a correlation between, l+ M$ W% l5 H8 y- d
childhood testosterone exposure and reduced adult' ^5 x9 r+ z4 n" F& N, h# A5 I5 h8 s8 p
penile length in clinical studies.
H3 t! B K- J+ w5 A- ZNonetheless, we do not believe our patient is
- [/ @) E) G7 K# t1 k9 E, S" xgoing to experience any of the untoward effects from6 h: \ E: C0 M" E% f3 C* i
testosterone exposure as mentioned earlier because
" r+ `, s9 m: L* T, _2 Athe exposure was not for a prolonged period of time.
5 V6 x* d6 |3 m5 MAlthough the bone age was advanced at the time of ~9 x3 H* {% e4 I4 g
diagnosis, the child had a normal growth velocity at6 P2 a W8 S: H$ r4 ^# i
the follow-up visit. It is hoped that his final adult
. ?) a" m2 o& K5 {height will not be affected.
' O/ h/ ^6 ^ J1 hAlthough rarely reported, the widespread avail-
) {$ m+ _. y; i# m& b* lability of androgen products in our society may- |& f4 I: q1 c+ S
indeed cause more virilization in male or female1 ]1 m Z3 t7 \/ s5 N( n/ y
children than one would realize. Exposure to andro-
3 X5 |7 i8 m {3 b. Tgen products must be considered and specific ques-
1 N% H0 F' U; W9 y9 _7 `8 [& Gtioning about the use of a testosterone product or0 b% _2 r; i" r& B% h
gel should be asked of the family members during# N' t/ k8 h4 E$ M# [1 l2 ^. [
the evaluation of any children who present with vir-, p4 o2 q/ p7 k' e( U
ilization or peripheral precocious puberty. The diag-
) _( B, p& o9 B, }3 ~& _nosis can be established by just a few tests and by
: t2 O8 X5 V0 m9 zappropriate history. The inability to obtain such a f6 k7 [- ?$ A: r u, f/ j8 @
history, or failure to ask the specific questions, may* q+ f6 w# \* D
result in extensive, unnecessary, and expensive0 V* T+ {3 L L
investigation. The primary care physician should be
& R3 N/ Z9 [1 q1 F- S O% ^7 z% `aware of this fact, because most of these children' T8 J& F/ a" B& L) B F! X# h
may initially present in their practice. The Physicians’% B7 P6 W6 q2 X
Desk Reference and package insert should also put a6 w! X9 V6 i( A2 C$ ], o) U' E* Q- E
warning about the virilizing effect on a male or
6 p: S1 l t6 ~: L* Ufemale child who might come in contact with some-
3 r' ^2 I+ a4 Wone using any of these products.& z: k7 r w8 c5 l3 r0 k) z9 [
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Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;4 [) o5 |, k7 L4 D5 | k
2002: 565-628.
! ^. a, |1 I# i; Q8 G4 k7 C2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious' I: K6 T: H0 w% b
puberty in children with tumours of the suprasellar pineal; f& w+ w2 o0 N% o, o4 n0 ?8 c3 O
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/ b, @; o9 K! [! C7 _0 ~! G) u3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.4 _3 L- ~) u, d" s
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Dekker Inc; 2003:211-238.
7 i( N4 B; s# F7 S$ ?6 w; r; A4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual, c* ?% {; l0 m# H
development in a two-year-old boy induced by topical9 e8 G7 M+ D8 p! G. a% h
exposure to testosterone. Pediatrics. 1999;104:e23.
% ]3 I# O" L0 m5. Greulich WW, Pyle SI, eds. Radiographic Atlas of$ h: m5 V2 K( Q- p, J3 j
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Stanford, CA: Stanford University Press; 1959.1 e2 }9 w0 D( f& X3 G
6. Physicians’ Desk Reference. Androgel 1% testosterone,
% O/ }" m; f, B0 p( mUnimed Pharmaceutical Inc. Montvale, NJ: Medical
' N% i' [8 |# F. H* q! QEconomics Company, Inc; 2004:3239-3241.1 c' I+ Q; Y( p/ k. F2 `5 n! Q) g
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