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is a significant concern for physicians. Central4 G; Z9 d" l1 {& J+ d
precocious puberty (CPP), which is mediated0 H* H7 `, ?) d" b2 o: {( N
through the hypothalamic pituitary gonadal axis, has c+ w3 C3 E) _
a higher incidence of organic central nervous system8 h0 x1 W9 e, Z' j
lesions in boys.1,2 Virilization in boys, as manifested
2 ]% L2 S$ P6 |2 ]+ D9 H5 lby enlargement of the penis, development of pubic
& e! e$ Z. G% w; }hair, and facial acne without enlargement of testi-
: s2 h6 g" A! mcles, suggests peripheral or pseudopuberty.1-3 We
9 p/ p& \, E2 greport a 16-month-old boy who presented with the
* m* d' o& I2 @: j* n" X8 I# q- Qenlargement of the phallus and pubic hair develop-
) R O& E" p) E- lment without testicular enlargement, which was due' ~3 o6 S: B% O' E. ^
to the unintentional exposure to androgen gel used by8 w; K4 ^5 g- ^6 ^
the father. The family initially concealed this infor-, w- P# U% P3 S- W$ t! t
mation, resulting in an extensive work-up for this
* p+ t/ M( a7 \4 U4 cchild. Given the widespread and easy availability of& d% Q6 T4 w7 `/ X4 l+ k
testosterone gel and cream, we believe this is proba-; I( j5 S8 p+ ^/ H6 L
bly more common than the rare case report in the0 x& k, `. V2 Z7 ]/ b" G$ C& D
literature.4
+ j b4 O/ i; P' YPatient Report; _, V7 i. q2 L6 J8 N
A 16-month-old white child was referred to the
; a, O0 o3 P1 u7 rendocrine clinic by his pediatrician with the concern
3 S( d, r5 {4 pof early sexual development. His mother noticed
2 Q9 E; k9 \5 J6 d# Ylight colored pubic hair development when he was. Q$ D& m8 L- J: M5 y
From the 1Division of Pediatric Endocrinology, 2University of
$ x" d" |6 `8 V |7 RSouth Alabama Medical Center, Mobile, Alabama.
6 r6 j9 ]7 B. D8 M) {Address correspondence to: Samar K. Bhowmick, MD, FACE,
! U4 I* N" n) E. ^, ~3 xProfessor of Pediatrics, University of South Alabama, College of
! p4 W. m" T+ C. f* iMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;+ M% k. w# U9 L1 E8 ^6 P
e-mail: [email protected]. r$ y2 E6 G' E1 ~- q
about 6 to 7 months old, which progressively became
/ r; s4 Q5 ~ D* Hdarker. She was also concerned about the enlarge-" ~( I0 P8 A" a
ment of his penis and frequent erections. The child
4 ~$ n, s0 C9 G# R1 x% S- b7 vwas the product of a full-term normal delivery, with) p+ b4 D2 p5 r5 \
a birth weight of 7 lb 14 oz, and birth length of
. ^; A% B; Q1 Q( ~20 inches. He was breast-fed throughout the first year' w* O2 t" i' l; b4 ^. r' ^
of life and was still receiving breast milk along with
' a( J+ v, b* @' gsolid food. He had no hospitalizations or surgery,
2 I2 u4 {0 f6 cand his psychosocial and psychomotor development
) E0 F/ {* K6 Iwas age appropriate.
* ]& d% @: j5 zThe family history was remarkable for the father,% e! z2 Y: ` R
who was diagnosed with hypothyroidism at age 16,
% L% D1 y1 x$ D" ^2 b1 mwhich was treated with thyroxine. The father’s
9 h" X' w0 X+ u' I( z. jheight was 6 feet, and he went through a somewhat
. e; K y* F9 c% N* bearly puberty and had stopped growing by age 14.: P# p4 ~% A% R) j9 S/ G4 \' }
The father denied taking any other medication. The
# Q8 u/ L( d$ I) z$ i) M% c8 Mchild’s mother was in good health. Her menarche
6 i% ~2 `3 O% q( f, Bwas at 11 years of age, and her height was at 5 feet
5 {7 c* K8 b2 S# Y4 f/ F5 inches. There was no other family history of pre-* m9 V5 H1 E5 H" ?
cocious sexual development in the first-degree rela-
3 z; c# b/ z; c9 t4 Ltives. There were no siblings.4 P3 I+ Y5 D* p: @, Q$ z
Physical Examination3 [( @3 H; F# F9 X" a6 R
The physical examination revealed a very active,* G0 H8 `, o% V9 |! c
playful, and healthy boy. The vital signs documented$ n; C* H) i% p/ q
a blood pressure of 85/50 mm Hg, his length was0 G* D/ W) y/ s: H
90 cm (>97th percentile), and his weight was 14.4 kg8 W2 u- \ F8 V3 _$ k" X
(also >97th percentile). The observed yearly growth5 A; E, w. W/ v ?' I
velocity was 30 cm (12 inches). The examination of5 ]6 s5 |) L- Q" Y5 L6 Q( N- c
the neck revealed no thyroid enlargement.
/ l. i H4 y I9 VThe genitourinary examination was remarkable for% m: v; y" m5 G7 p& C
enlargement of the penis, with a stretched length of& o7 E! ^' `& U1 |) b
8 cm and a width of 2 cm. The glans penis was very well
8 r9 i9 P1 h4 J! k1 d2 Gdeveloped. The pubic hair was Tanner II, mostly around. E" |: S. i" f6 {2 I( O
540% L+ h4 ]" p/ D9 J) v
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from g# m2 _: N3 q2 ?' Z* u- n
the base of the phallus and was dark and curled. The3 F5 [1 _9 x, g- |. z
testicular volume was prepubertal at 2 mL each.
8 O6 H( C# \ z t) K. lThe skin was moist and smooth and somewhat
5 Z. D( _& G, D5 roily. No axillary hair was noted. There were no) ?9 F& i, y4 W' D5 _
abnormal skin pigmentations or café-au-lait spots.3 D7 ^# y* b/ Y1 N* o& l
Neurologic evaluation showed deep tendon reflex 2+, `2 y7 D: }) @9 d* \8 n" h3 P4 r
bilateral and symmetrical. There was no suggestion
; {% ]( E6 ~! l' Q A6 g0 `) |3 fof papilledema.
8 e+ I- @$ N# ?. R9 oLaboratory Evaluation
# W/ u- j) E6 I; a7 jThe bone age was consistent with 28 months by1 Q3 Q- i+ b4 c$ K( t6 f0 ^: v
using the standard of Greulich and Pyle at a chrono-! C" L0 ?0 c$ W0 W
logic age of 16 months (advanced).5 Chromosomal( v4 l K# j" b- D
karyotype was 46XY. The thyroid function test
% e' S" T% H- K- b( Fshowed a free T4 of 1.69 ng/dL, and thyroid stimu-
" j: L5 W0 r; Q( t& b( ylating hormone level was 1.3 µIU/mL (both normal).
7 g! S7 n. U+ e$ w. K0 J" oThe concentrations of serum electrolytes, blood. k( l3 B* r% T, a, s- C2 y
urea nitrogen, creatinine, and calcium all were
3 N$ L% a: N$ y# ^# ^# N0 Fwithin normal range for his age. The concentration
/ y3 c4 U# A7 qof serum 17-hydroxyprogesterone was 16 ng/dL+ U( X: R, K2 s0 V5 U+ @. c
(normal, 3 to 90 ng/dL), androstenedione was 20
! c: m& Z; P, ^, a( Ung/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
% a# Z5 A. U, c6 cterone was 38 ng/dL (normal, 50 to 760 ng/dL),0 l$ z7 B4 s0 D9 K2 X1 O* ^
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
8 {. i- d" t& u/ {/ y ^6 G49ng/dL), 11-desoxycortisol (specific compound S)/ A) L9 M' V6 o0 y& S) V7 |' B i
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
+ t8 t" J; c$ n& b9 b8 Vtisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
" T0 @- h+ c( n' w4 U$ ~testosterone was 60 ng/dL (normal <3 to 10 ng/dL),8 d4 f1 C( S' @7 l+ I6 E, c" i
and β-human chorionic gonadotropin was less than9 C7 l. u1 _- X' y% q/ I+ ] d
5 mIU/mL (normal <5 mIU/mL). Serum follicular
# c) J7 y: I7 g+ o, ~( ?$ Estimulating hormone and leuteinizing hormone1 s _# [$ j3 M6 W
concentrations were less than 0.05 mIU/mL
3 | h; J; v) W$ S1 F(prepubertal).
) e" b# n. F9 { [4 ?/ KThe parents were notified about the laboratory
- u* N- ^" a) Gresults and were informed that all of the tests were w6 e% t! ]0 m; {2 N
normal except the testosterone level was high. The& ~+ R/ x) m2 n' [ E
follow-up visit was arranged within a few weeks to
3 P0 V$ T' U d, W3 h1 A' B2 _obtain testicular and abdominal sonograms; how-' W2 J7 w, o$ M) m$ C
ever, the family did not return for 4 months. h( j; i& C4 e1 w
Physical examination at this time revealed that the0 Q! F9 W+ G9 k& O7 p7 @
child had grown 2.5 cm in 4 months and had gained9 E5 m5 f1 e7 Z1 n7 \/ ^( ^4 i
2 kg of weight. Physical examination remained- u7 n2 V n# R- v3 z6 O0 u
unchanged. Surprisingly, the pubic hair almost com-
+ B! u5 P4 G& v4 M. {, v6 D1 _2 npletely disappeared except for a few vellous hairs at
# i) b; q& z; H8 x# u! [6 d5 E0 O. Hthe base of the phallus. Testicular volume was still 2
s- @* U0 q& s( ?- F6 ^) ^mL, and the size of the penis remained unchanged.
1 C, ~# r* P7 Q: a' hThe mother also said that the boy was no longer hav-
+ ^9 [; E; J# F! T! A' o6 i, B- |ing frequent erections.
9 ~( V9 d, k1 k$ e0 qBoth parents were again questioned about use of* Y Y. A* A, c
any ointment/creams that they may have applied to5 O" _) _6 o1 _# p" s3 i
the child’s skin. This time the father admitted the
; |* A7 `; ?5 M) ]Topical Testosterone Exposure / Bhowmick et al 541
i# R. z0 Q" V# F! B4 p) Zuse of testosterone gel twice daily that he was apply-
% g- z7 \( K) l9 ?ing over his own shoulders, chest, and back area for
9 U0 a" z, C, Ja year. The father also revealed he was embarrassed9 g. y' [! P5 t: W
to disclose that he was using a testosterone gel pre-
5 o- A$ \9 J; ^$ I0 i4 ] tscribed by his family physician for decreased libido. U& M" Z6 g' n. y
secondary to depression.
# i4 l# z1 r% K7 a3 a5 m% r4 VThe child slept in the same bed with parents.
" N) v3 j+ M- Y% X. {The father would hug the baby and hold him on his$ @2 w* u9 L* N( O* E
chest for a considerable period of time, causing sig-5 ]! I2 g9 w) A5 i& P* C1 u+ Q
nificant bare skin contact between baby and father.
) \+ ]) `: [. eThe father also admitted that after the phone call,
9 }/ x5 y1 p- @0 h, l j; Xwhen he learned the testosterone level in the baby
4 I) K- r. t1 iwas high, he then read the product information8 ]/ W' s5 x, D: x+ T
packet and concluded that it was most likely the rea-
) Q$ A3 T. ?( \& t0 z% p; Bson for the child’s virilization. At that time, they
; b- @/ b( x2 [6 R" h. j* ^! c: rdecided to put the baby in a separate bed, and the$ H" \& q' P+ C
father was not hugging him with bare skin and had
+ I a: U# \5 E7 ibeen using protective clothing. A repeat testosterone
: B( M7 L W, U: s! \0 A& x+ Qtest was ordered, but the family did not go to the2 G* y3 S/ f2 Q. t7 n9 M0 q
laboratory to obtain the test./ L1 Q% Z4 E+ k1 G
Discussion
" L R' ^+ `- S8 a7 ]/ ?$ z6 Z! xPrecocious puberty in boys is defined as secondary
; t) j, ?% M: _4 Ssexual development before 9 years of age.1,4
+ _5 z1 p. y% T0 a. rPrecocious puberty is termed as central (true) when
7 A6 s/ M1 }: O X, i- J" K T- _/ ^it is caused by the premature activation of hypo-6 J8 D. h$ A( O W9 D) O- U# d; s0 F
thalamic pituitary gonadal axis. CPP is more com-, J, E+ A) M8 K% t t; R# [
mon in girls than in boys.1,3 Most boys with CPP) s' I8 h0 m9 f; e
may have a central nervous system lesion that is/ i% Y2 N' E3 m- ]1 y8 d4 c
responsible for the early activation of the hypothal-
. `3 l5 Y. U9 tamic pituitary gonadal axis.1-3 Thus, greater empha-9 E, ^. b. |( `2 w
sis has been given to neuroradiologic imaging in9 G% z! p3 t8 @' A7 V8 z/ e1 X9 W
boys with precocious puberty. In addition to viril-
+ F- D* a \5 \. S! O! sization, the clinical hallmark of CPP is the symmet-
0 C, l6 b) d$ d5 @ Crical testicular growth secondary to stimulation by7 M$ X6 \' Z, `$ y
gonadotropins.1,3
3 j h5 A d3 C% X( q. @1 P/ SGonadotropin-independent peripheral preco-" O8 \: |' ` m
cious puberty in boys also results from inappropriate
4 F3 h# x. g. w( p; z- ~9 @$ }androgenic stimulation from either endogenous or
) n& {# D4 \: Y5 aexogenous sources, nonpituitary gonadotropin stim-( u/ O6 ~- q/ S6 E
ulation, and rare activating mutations.3 Virilizing2 k' @, i" u4 n" n
congenital adrenal hyperplasia producing excessive
+ S* J/ Q6 L7 g3 i( ~adrenal androgens is a common cause of precocious
J1 r& b2 A+ \6 F5 \3 Fpuberty in boys.3,4
7 h& V7 b3 A/ z$ Y' P4 i: jThe most common form of congenital adrenal! _( U( l/ C3 I
hyperplasia is the 21-hydroxylase enzyme deficiency.
8 U. h' \0 E$ u/ iThe 11-β hydroxylase deficiency may also result in; y9 u$ `: `% i
excessive adrenal androgen production, and rarely,' l3 z9 D- t; S3 W! \2 a
an adrenal tumor may also cause adrenal androgen
) |) Z3 F1 r+ a' Nexcess.1,3
. w* E$ \: D1 \: j3 ?at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from3 } B9 a* M; T/ k; ]* i0 [
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
0 q7 X2 g0 i+ P6 hA unique entity of male-limited gonadotropin-2 K+ _( W" e( Z1 m7 O
independent precocious puberty, which is also known
J' `' k$ g" q2 xas testotoxicosis, may cause precocious puberty at a: x8 |; w2 P/ j2 w) x
very young age. The physical findings in these boys- ^8 \8 S- i* t/ K& C) M
with this disorder are full pubertal development,. ?4 `6 s9 q# c4 r8 p4 V6 C! p
including bilateral testicular growth, similar to boys
% v# P1 M, { G0 o9 kwith CPP. The gonadotropin levels in this disorder% ]; b) e8 O5 J- F! J* R. }$ y( W$ H
are suppressed to prepubertal levels and do not show
! V0 n6 ^" p' N+ }$ t6 [0 A6 K: M8 spubertal response of gonadotropin after gonadotropin-8 u, a$ N* T. S1 o K l, ?9 R
releasing hormone stimulation. This is a sex-linked( K1 E! X$ z5 H0 k& J: \
autosomal dominant disorder that affects only
8 C9 r, e* o$ f& c7 h1 Fmales; therefore, other male members of the family9 C/ O9 T' L! z7 P0 z1 c
may have similar precocious puberty.3
# o! e1 n' D6 |+ X% h8 \4 |. ]+ NIn our patient, physical examination was incon-
( I2 Z" b( R7 L" M# Osistent with true precocious puberty since his testi-
+ e+ i6 y' s) j @5 s- bcles were prepubertal in size. However, testotoxicosis
, J, C% {- {8 ]( _' f& wwas in the differential diagnosis because his father$ n3 j1 A$ `. V! N' X
started puberty somewhat early, and occasionally,
% @, s( t9 o! B1 ]' s# b( g2 }( l' ktesticular enlargement is not that evident in the
% F* u! {" B1 g8 nbeginning of this process.1 In the absence of a neg-
5 {5 ]# |) \3 y) B$ S4 Q O( H6 n: Oative initial history of androgen exposure, our
; w* w' \( K2 M/ w$ i- Nbiggest concern was virilizing adrenal hyperplasia,+ h( J9 M; B { y* g0 p' X' U
either 21-hydroxylase deficiency or 11-β hydroxylase
3 x6 @+ J! O! @8 e2 M; wdeficiency. Those diagnoses were excluded by find-& O; d. f3 l' A) w) ?" h$ U
ing the normal level of adrenal steroids.
, @+ `7 F. p* n" A* r( w2 MThe diagnosis of exogenous androgens was strongly
4 B& G4 [* Z {, y: {7 Isuspected in a follow-up visit after 4 months because
& U- m+ T& d4 ]4 [5 dthe physical examination revealed the complete disap-
5 l& q* z1 f; j. [, q: ppearance of pubic hair, normal growth velocity, and/ k+ s' c$ }6 K/ U. O/ c
decreased erections. The father admitted using a testos-
r" |/ o) i5 A$ e$ ~terone gel, which he concealed at first visit. He was4 ?* x; C& f) D1 ~* ^6 f
using it rather frequently, twice a day. The Physicians’! j1 {# ^) Y' f H7 G( z: N
Desk Reference, or package insert of this product, gel or
" f" B6 v9 k* |( V Xcream, cautions about dermal testosterone transfer to$ R* C9 I9 F$ K3 D- p
unprotected females through direct skin exposure.
/ U) O [. H5 e" y$ gSerum testosterone level was found to be 2 times the
1 T$ |7 l3 b& R) |" G: nbaseline value in those females who were exposed to% N* w/ B* l3 D# ?( t
even 15 minutes of direct skin contact with their male
6 d% U7 Y% Y Hpartners.6 However, when a shirt covered the applica-. }, d2 N/ h P4 y0 R+ d+ q
tion site, this testosterone transfer was prevented.
) p) a M; z5 o( e! fOur patient’s testosterone level was 60 ng/mL,
$ s6 X7 A* j/ t, F$ R' o9 G: bwhich was clearly high. Some studies suggest that
& |/ c8 T: T/ I0 O, mdermal conversion of testosterone to dihydrotestos-
" ]1 p4 R/ X- _& oterone, which is a more potent metabolite, is more a1 Z0 p& b- r, K1 W
active in young children exposed to testosterone/ J8 o% {* c- M# l
exogenously7; however, we did not measure a dihy-! t' t F0 h* e8 |& j: n& l
drotestosterone level in our patient. In addition to
' `& R7 M0 O* b- s, gvirilization, exposure to exogenous testosterone in
8 ^ P" ?* N$ H- o+ zchildren results in an increase in growth velocity and
" m# y; B9 H. _+ M& [2 T& N radvanced bone age, as seen in our patient.
# E+ l; n/ c6 g' ~- AThe long-term effect of androgen exposure during! T+ C# e8 |" V- j3 w6 G& J' e
early childhood on pubertal development and final0 d. Q- P0 x: o! v+ H; u' s( o- G
adult height are not fully known and always remain3 y+ y" x" n( Q) [3 P& v
a concern. Children treated with short-term testos-
$ n6 i7 p2 \/ K% \terone injection or topical androgen may exhibit some6 J+ R" ]. B' d, {+ r" t$ N
acceleration of the skeletal maturation; however, after
, y9 i3 ?( x6 G5 O+ ^) jcessation of treatment, the rate of bone maturation
$ k' }; X7 o5 s8 w1 Z7 k. ?decelerates and gradually returns to normal.8,97 p- B( T9 n0 N- c( y5 w( K R
There are conflicting reports and controversy$ w3 W# n* S+ z$ G8 X
over the effect of early androgen exposure on adult
' ~; B4 ^ @% F7 cpenile length.10,11 Some reports suggest subnormal) y; Q) K* V+ w8 i v( c
adult penile length, apparently because of downreg-
! Q; L: c3 t9 eulation of androgen receptor number.10,12 However,
3 S' C: g& a/ vSutherland et al13 did not find a correlation between
" ]2 b- }5 H. c# ~: nchildhood testosterone exposure and reduced adult
: O* O; m9 Q; r2 V' z/ E+ [4 rpenile length in clinical studies.1 k4 J4 n' s, ?- P7 G
Nonetheless, we do not believe our patient is' S+ @4 A4 b. D2 X; ? }- ]$ r
going to experience any of the untoward effects from
1 e6 h6 K8 s/ J6 T( }6 X. w3 P- e& ^testosterone exposure as mentioned earlier because
3 D0 R' J5 I/ u+ f+ C% Fthe exposure was not for a prolonged period of time.
' O5 R) K$ Y2 P4 W1 _% q" IAlthough the bone age was advanced at the time of
: W4 e* M) {) t& T0 Vdiagnosis, the child had a normal growth velocity at
# |6 w/ }( h9 d) W3 Dthe follow-up visit. It is hoped that his final adult$ o' D! x) E7 k1 V! g0 p, l
height will not be affected. m& E7 z' g6 \
Although rarely reported, the widespread avail-
( @. q$ }' t" F d. Nability of androgen products in our society may- A: ? @, v: r7 G/ O. L/ s' ~
indeed cause more virilization in male or female
" M& Y- f4 S: x1 m3 j7 o) echildren than one would realize. Exposure to andro-4 M) k4 }- G. n6 j4 f- q: p
gen products must be considered and specific ques-
) w% _! }& y' C% B' x1 i! Ztioning about the use of a testosterone product or
2 O; C' s/ Y& b' r" L0 Lgel should be asked of the family members during
6 U6 N( E0 C9 N8 Z N/ D$ Mthe evaluation of any children who present with vir-
* {. F- D; v1 o5 Q0 L3 }ilization or peripheral precocious puberty. The diag-
" w T2 }5 [& E* Z" L1 v9 gnosis can be established by just a few tests and by
* U4 N% i: }) e1 a. y3 I% J eappropriate history. The inability to obtain such a+ V( y3 [# i5 D, C5 y. p
history, or failure to ask the specific questions, may
4 S3 v/ Z$ J- P( m- ^, ~$ iresult in extensive, unnecessary, and expensive; g/ @/ |' ^0 X: G2 ~
investigation. The primary care physician should be
+ a* M1 T! s. W- Zaware of this fact, because most of these children; O E! k- q, q& z' ^# J
may initially present in their practice. The Physicians’ S5 Y6 q, J! ]) |/ L& M, E. N
Desk Reference and package insert should also put a
% G1 [# W$ T& u8 r" g( lwarning about the virilizing effect on a male or
/ l. S( c' h# t' _6 ] zfemale child who might come in contact with some-* d9 i9 z$ S1 X
one using any of these products.
7 e, e' h: @4 }4 L5 u( l1 mReferences. v% K& K- j$ R; z" Z8 f
1. Styne DM. The testes: disorder of sexual differentiation# t1 @0 J, J. r: M
and puberty in the male. In: Sperling MA, ed. Pediatric
/ v5 N' x& n% p; ^Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
+ e2 _) M) C" I% a0 ~0 I( R2002: 565-628.
1 L# H- _5 H: _: S8 X# ?2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
& n; g; f6 r: ?5 X, u1 A! Apuberty in children with tumours of the suprasellar pineal! A8 U4 m4 F7 ^/ J
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
+ J% r8 _$ e% T6 P* E: s5 vTopical Testosterone Exposure / Bhowmick et al 543
7 r" p5 W; m0 t& E* h$ S. vareas: organic central precocious puberty. Acta Paediatr.
) ~9 Y7 M) a! F8 }2001;90:751-756.
' |5 o: Z$ R( `3 z: J& q* [3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
& M; r( D$ V/ t- p- VPediatric Endocrinology. 4th ed. New York, NY: Marcel0 |, G. g) U3 W6 Y+ L+ b
Dekker Inc; 2003:211-238.
+ b$ V2 Y0 ^# c/ `8 D' T4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual o! p* q+ P$ ]# m
development in a two-year-old boy induced by topical
1 ]. k6 X; G1 T pexposure to testosterone. Pediatrics. 1999;104:e23.0 b( o q2 b8 ~' K' O9 q7 H' T
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
) V8 L4 r+ F5 {" NSkeletal Development of the Hand and Wrist. 2nd ed.
/ ?( L4 g* n N* K8 wStanford, CA: Stanford University Press; 1959.
' g# ?; \0 k( h) b6. Physicians’ Desk Reference. Androgel 1% testosterone,% r/ [, B) ?" D0 O* H# A
Unimed Pharmaceutical Inc. Montvale, NJ: Medical
4 V. v5 v" U! n! N- i* L3 k- ^/ nEconomics Company, Inc; 2004:3239-3241.& j8 u; q1 l7 g1 D2 `, B9 w7 j
7. Klugo RC, Cerny JC. Response of micropenis to topical
& U8 w5 m/ Z4 D( Stestosterone and gonadotropin. J Urol. 1978;119:+ A( y8 C! Z+ T0 B, j
667-668.' g% ~8 r' ?1 _6 M1 S( q' z3 A
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