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is a significant concern for physicians. Central* `2 [4 k9 `' m" q' k7 \
precocious puberty (CPP), which is mediated
5 w1 A& u! p& i& Pthrough the hypothalamic pituitary gonadal axis, has J4 u5 l, m6 i8 _5 S
a higher incidence of organic central nervous system
- F/ M" p& [8 s6 Glesions in boys.1,2 Virilization in boys, as manifested& n( [! I$ Q5 l+ `* E y
by enlargement of the penis, development of pubic4 g. Z" ~- F- E/ Z8 q
hair, and facial acne without enlargement of testi-
: b4 e4 j0 T9 g/ L% _" F7 Kcles, suggests peripheral or pseudopuberty.1-3 We2 y( r# O: `) U* M5 c) R2 O( Y
report a 16-month-old boy who presented with the
8 S0 a0 [, p+ r' Z% M3 {5 A4 V- Wenlargement of the phallus and pubic hair develop-
9 b) y2 P$ U# X8 K8 Y* ?) s/ Hment without testicular enlargement, which was due8 D9 t: D3 Z0 X. ]2 v6 P2 R ?+ j
to the unintentional exposure to androgen gel used by
( K+ o8 t" v0 Z9 R) }the father. The family initially concealed this infor-" P, ?. {" I2 f
mation, resulting in an extensive work-up for this
+ s+ q+ _0 m7 `8 k- S& Vchild. Given the widespread and easy availability of
; D. c% b1 T% d. rtestosterone gel and cream, we believe this is proba-" `% N7 J* S) m
bly more common than the rare case report in the2 g5 S/ W2 e J; ] {! C- B
literature.4
3 [6 a% K% _0 E5 I8 @* UPatient Report
% k4 i6 e" s, p, K2 f2 UA 16-month-old white child was referred to the+ i7 ~2 z& ?0 b; ?4 X
endocrine clinic by his pediatrician with the concern
+ ?7 ?$ ~; d% lof early sexual development. His mother noticed) c7 h9 [( n W0 @
light colored pubic hair development when he was
) @; @2 C' n. W$ C) DFrom the 1Division of Pediatric Endocrinology, 2University of3 X9 W- c: Y" S2 R
South Alabama Medical Center, Mobile, Alabama.; e0 x, b7 _: Q* b3 y1 L V
Address correspondence to: Samar K. Bhowmick, MD, FACE,( U9 D, v2 w. B/ V- D# g# b
Professor of Pediatrics, University of South Alabama, College of
. ~' C- D% T4 n8 ?1 cMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
7 r5 f, J& h6 W# k3 A8 n& Ae-mail: [email protected].
6 u4 ~3 ]3 }" m5 z) [, o$ S- {about 6 to 7 months old, which progressively became/ W3 [+ k q1 {* |4 x. O
darker. She was also concerned about the enlarge-, a* B d" ^! V, U9 W) F
ment of his penis and frequent erections. The child
% z- h4 v+ a+ c* b8 c4 uwas the product of a full-term normal delivery, with
. @, ]! R% @- W' P' ?a birth weight of 7 lb 14 oz, and birth length of8 D L0 _3 A9 K( X
20 inches. He was breast-fed throughout the first year6 g. o" K$ p, P
of life and was still receiving breast milk along with
+ Z+ o6 n. m* `4 }solid food. He had no hospitalizations or surgery," Y7 j" M/ y8 |3 q
and his psychosocial and psychomotor development8 n/ g3 L0 z- E% u; X
was age appropriate.
9 N) S; x$ T$ D& iThe family history was remarkable for the father,& A% b4 x" Z9 h! b* w7 t- h6 j$ _* G
who was diagnosed with hypothyroidism at age 16,, M3 C8 _6 ]+ i1 p
which was treated with thyroxine. The father’s
- [5 z" J1 M2 `( _6 Nheight was 6 feet, and he went through a somewhat
6 |5 e4 L' Z, k+ O' yearly puberty and had stopped growing by age 14.2 ?" c, p9 _1 D& y5 T* n
The father denied taking any other medication. The
$ p: X6 g/ z3 ?. p: Hchild’s mother was in good health. Her menarche$ R: j) Z8 X3 v7 P/ X$ K
was at 11 years of age, and her height was at 5 feet& D4 G# {' ?& ^8 H0 O* G
5 inches. There was no other family history of pre-6 c7 Y) T Y! V2 A; R3 O) B% {
cocious sexual development in the first-degree rela-- I4 V7 L: g" r. z, b& l; r; h" Z
tives. There were no siblings.
- q; O6 H1 w6 Q0 V: ]: ] MPhysical Examination4 c6 W" Z* J3 m$ {" [: P
The physical examination revealed a very active,
+ C- r$ W T$ v$ Wplayful, and healthy boy. The vital signs documented
3 j0 `" ^( L; B- a3 pa blood pressure of 85/50 mm Hg, his length was* A4 h! F, }6 l6 W0 t+ Z
90 cm (>97th percentile), and his weight was 14.4 kg
& S$ [- ?* H' L9 R# X/ G8 |' k* j! z(also >97th percentile). The observed yearly growth
* H( t! h& M1 D: hvelocity was 30 cm (12 inches). The examination of \9 z8 [1 I( t5 C
the neck revealed no thyroid enlargement.6 ?& M. t W$ c+ Q5 \; X
The genitourinary examination was remarkable for
' a) `9 h1 Q6 e- Nenlargement of the penis, with a stretched length of! c `7 r6 J/ \2 ?, V& o9 ]; O
8 cm and a width of 2 cm. The glans penis was very well
% a- P0 ^- e3 w; Sdeveloped. The pubic hair was Tanner II, mostly around
( \% j, U3 i R540
6 A7 W' z$ E( t. O& S/ `) f8 X& sat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from6 W7 L; s8 x; G6 |; t- c1 o2 r
the base of the phallus and was dark and curled. The6 S) \* t& P9 `; F' Y# o0 u
testicular volume was prepubertal at 2 mL each.' x5 v) [2 {4 y% n; n
The skin was moist and smooth and somewhat
. R3 a$ j {: Boily. No axillary hair was noted. There were no
( A0 [+ b8 K( N/ C. _( E; Fabnormal skin pigmentations or café-au-lait spots.
% d* z8 U( w Q( qNeurologic evaluation showed deep tendon reflex 2+
$ L; N' b5 J9 l0 ]! a5 obilateral and symmetrical. There was no suggestion F+ G% b5 E- e* t& J3 z
of papilledema.
; m4 } a& S/ V8 p( ?Laboratory Evaluation, k9 s- D! F3 F' [8 q# O
The bone age was consistent with 28 months by
+ V: ~) M6 a; U) M, ~ ausing the standard of Greulich and Pyle at a chrono-
. c$ x) x8 A0 ]! z0 T* Klogic age of 16 months (advanced).5 Chromosomal
$ O1 \2 Y2 U P8 X$ |9 v4 ]4 lkaryotype was 46XY. The thyroid function test
" A6 i" n/ F: _* Dshowed a free T4 of 1.69 ng/dL, and thyroid stimu-
6 _9 F: F% b9 ^9 Z- u2 E1 w( olating hormone level was 1.3 µIU/mL (both normal).
! Z* m* I1 r3 S3 {; Z5 x7 hThe concentrations of serum electrolytes, blood
" L2 m) E+ z& `; X9 R2 Burea nitrogen, creatinine, and calcium all were
6 ^$ {! q; M0 b7 G2 twithin normal range for his age. The concentration
2 F! k# T. Z7 e# V! ]of serum 17-hydroxyprogesterone was 16 ng/dL$ C4 O2 Y4 Q+ o! q
(normal, 3 to 90 ng/dL), androstenedione was 20
3 N% K0 l) b0 ~% N. |4 c" r7 C: Vng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
; L Z4 S& f+ J P6 e2 f. i; Q; oterone was 38 ng/dL (normal, 50 to 760 ng/dL),' h# Q+ F* u2 [4 [
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
6 }8 ^- `# B" u2 i5 H* l49ng/dL), 11-desoxycortisol (specific compound S)0 p ]/ r! v5 R9 g6 a8 Z$ K& {7 o7 g& X
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
4 h7 p) n z1 D/ l( ~' Ntisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
# Z# b' h/ H, b. T4 Stestosterone was 60 ng/dL (normal <3 to 10 ng/dL),) ~3 e+ c7 O* z( R& \
and β-human chorionic gonadotropin was less than
! K& k( V% N4 @' q3 A5 mIU/mL (normal <5 mIU/mL). Serum follicular' B& G! H" y" S( p5 {; F
stimulating hormone and leuteinizing hormone" Y- }; Y; k0 h1 p; X
concentrations were less than 0.05 mIU/mL0 D+ m% m, T: ~0 a8 F2 t8 Y
(prepubertal). y% p( v$ n- J/ p
The parents were notified about the laboratory
; Y/ V1 g* e3 k6 wresults and were informed that all of the tests were) q" Y" S8 H0 L k8 q
normal except the testosterone level was high. The7 P8 ^& B' j) c5 D- X
follow-up visit was arranged within a few weeks to3 \7 w, |+ I/ A- N, c
obtain testicular and abdominal sonograms; how-
+ ~; ~3 i' x( e Z8 |8 `ever, the family did not return for 4 months.! P* e% y& V' K9 w8 t5 \- w% l
Physical examination at this time revealed that the
$ f; u/ T, L8 q. l' E ?- y! S( Lchild had grown 2.5 cm in 4 months and had gained$ k) O) |; g6 X. X, T
2 kg of weight. Physical examination remained
- v. Y2 d6 U4 Xunchanged. Surprisingly, the pubic hair almost com-% j i M. p+ R) ?, |% l* N" A
pletely disappeared except for a few vellous hairs at. _ x0 J* \; h" I' G/ |
the base of the phallus. Testicular volume was still 2
8 y; C8 i/ ^% W% @, ^; E* _% H UmL, and the size of the penis remained unchanged.
5 z& O2 z/ |2 V- {- P. G; f! cThe mother also said that the boy was no longer hav-6 G- G3 _+ n0 \: c" K' v1 q
ing frequent erections.6 [9 G; D" G6 R- \1 }
Both parents were again questioned about use of4 z' O7 S3 C# u
any ointment/creams that they may have applied to& N; {, M# l* a1 G4 ^" Z
the child’s skin. This time the father admitted the
7 {5 O2 o5 L( f) _! m1 _& hTopical Testosterone Exposure / Bhowmick et al 541! ]; O, q7 f8 [$ I( u* t
use of testosterone gel twice daily that he was apply-
" r% d- S, V' R% p1 P2 c8 Eing over his own shoulders, chest, and back area for
2 [0 J5 o7 t+ Ea year. The father also revealed he was embarrassed
! e1 m5 D, D# k* jto disclose that he was using a testosterone gel pre-& {. o: u, y' j
scribed by his family physician for decreased libido: s) C3 `" I1 e& {
secondary to depression.
" ?; A& P Q% t* N6 A" O9 ~/ kThe child slept in the same bed with parents.
3 q0 p! `3 x; ?. W$ ~6 f) sThe father would hug the baby and hold him on his
# M" c! X6 M s& Z& @7 o+ W/ Xchest for a considerable period of time, causing sig-
+ ?( H7 L6 [1 F; Z: g9 qnificant bare skin contact between baby and father.
5 S3 T$ O/ `% u) kThe father also admitted that after the phone call,3 A/ }' h6 {. A
when he learned the testosterone level in the baby+ R/ I# ~) S% q6 N
was high, he then read the product information1 j! z: X% B2 I9 ~+ L
packet and concluded that it was most likely the rea-9 V3 l/ {8 G% ?. p8 [
son for the child’s virilization. At that time, they6 w5 j; Q* x2 v0 J) N
decided to put the baby in a separate bed, and the
. Z- K F5 x$ _+ \ s$ _$ h6 Mfather was not hugging him with bare skin and had) r& |7 F4 P8 f( L7 o
been using protective clothing. A repeat testosterone
3 Y' d6 o. g1 S. R* l/ Etest was ordered, but the family did not go to the( u, H; @9 L: Q% v3 I
laboratory to obtain the test.
% c7 ?+ A Y1 A, R0 ~; I% ]( \Discussion+ X: \; P) b9 z
Precocious puberty in boys is defined as secondary
! w( d( Z' m: Ysexual development before 9 years of age.1,4
5 g5 r/ q( y! K# g9 y6 j# \. [Precocious puberty is termed as central (true) when
! D1 z5 u( ~) c) B7 Y. x( Pit is caused by the premature activation of hypo-
6 d% Z# J3 y% t$ athalamic pituitary gonadal axis. CPP is more com-
, P9 W3 `5 ~' }8 k" Bmon in girls than in boys.1,3 Most boys with CPP
u/ A" g+ V4 W$ i& ~( H# B) gmay have a central nervous system lesion that is5 t% J) q' A, v1 q! M l0 A
responsible for the early activation of the hypothal-7 ], g" U/ v: d2 u% ]. a8 e6 D
amic pituitary gonadal axis.1-3 Thus, greater empha-+ _/ V$ D D) Y7 m
sis has been given to neuroradiologic imaging in
3 j. g. Y( F; D) g. K" A0 E( d4 }0 _/ nboys with precocious puberty. In addition to viril-
" c, {. Y: _0 S( i1 ^ization, the clinical hallmark of CPP is the symmet-
( Q- w3 v- s6 L- crical testicular growth secondary to stimulation by
' _5 w' h6 M- ^ l9 M- |gonadotropins.1,3
2 q9 Y+ @4 g) b G' n; J/ r7 g% \Gonadotropin-independent peripheral preco-. ~. l! U3 | n1 ~5 k8 U
cious puberty in boys also results from inappropriate6 j: u) F: y T& Z
androgenic stimulation from either endogenous or+ O+ l9 X2 I% E. w
exogenous sources, nonpituitary gonadotropin stim-
0 l: b' K1 F- X5 `, V6 |! S. s4 Eulation, and rare activating mutations.3 Virilizing
+ |5 p+ j' v9 N/ ], acongenital adrenal hyperplasia producing excessive) x* I/ j9 n4 h9 n
adrenal androgens is a common cause of precocious' A, z( @. [4 U
puberty in boys.3,4
7 I% C f! j& c& P, IThe most common form of congenital adrenal6 K& V6 s2 x; U' Y
hyperplasia is the 21-hydroxylase enzyme deficiency.
6 g# L K4 Q( u7 rThe 11-β hydroxylase deficiency may also result in8 }5 f& f1 f Q, U, t* C- i. I
excessive adrenal androgen production, and rarely,3 T/ q6 x( I# o. a
an adrenal tumor may also cause adrenal androgen
6 g* X$ l+ y+ f3 ~; j2 I+ w0 Hexcess.1,3
! l: P& f& j1 a9 u1 z% Z, K; \at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from& ^$ f& o+ F: W( C/ e H, i
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
* ?2 \: w4 w6 s5 xA unique entity of male-limited gonadotropin-' Y7 b. q S7 }1 G
independent precocious puberty, which is also known2 s+ x+ F- @* y% N
as testotoxicosis, may cause precocious puberty at a g5 S% t# S' L2 G7 Y* D- `# m: M
very young age. The physical findings in these boys
5 H; }, g1 \. D3 E7 Owith this disorder are full pubertal development,3 y8 }2 ~1 m- [( l) Y N6 q) s/ a
including bilateral testicular growth, similar to boys
G; {/ d+ x7 N' F8 Q6 a* Gwith CPP. The gonadotropin levels in this disorder
& s4 D7 C; `1 t- o- U6 oare suppressed to prepubertal levels and do not show) } i# `- ~: ], Y) ?6 y/ I
pubertal response of gonadotropin after gonadotropin-( U8 h) K, q' G( b
releasing hormone stimulation. This is a sex-linked
( V4 E5 {+ f# B! J* v) u( jautosomal dominant disorder that affects only1 p* m' k3 T7 P9 n# C
males; therefore, other male members of the family
: g$ M! D+ B5 q$ v3 hmay have similar precocious puberty.3
9 H% {* l e. ~) u/ }& W6 f& ^ sIn our patient, physical examination was incon-
/ b) b2 B+ u( L% Rsistent with true precocious puberty since his testi- u! g* {9 n1 G( P; M
cles were prepubertal in size. However, testotoxicosis( Q: [. P' C' @ g; K. ]+ F
was in the differential diagnosis because his father8 l+ [. u+ e4 D$ X
started puberty somewhat early, and occasionally,4 _8 ^, V: j1 o, h" D# g; \
testicular enlargement is not that evident in the
, L( w; Z9 M5 ~9 S, B- h) }beginning of this process.1 In the absence of a neg-* |0 X0 w, k0 w, L5 ?/ C5 x% K
ative initial history of androgen exposure, our0 N2 g1 K K2 A: Y
biggest concern was virilizing adrenal hyperplasia,4 {7 \1 Y% \ O4 @# L+ m
either 21-hydroxylase deficiency or 11-β hydroxylase
4 ?9 [% H0 r2 q3 rdeficiency. Those diagnoses were excluded by find-' O/ N! ]; {& r- L
ing the normal level of adrenal steroids.2 E+ J% B1 I' t4 l" ]2 g! y: O
The diagnosis of exogenous androgens was strongly4 O# V) P& [0 \' c4 J P# d
suspected in a follow-up visit after 4 months because: h9 l: T$ a! g; A
the physical examination revealed the complete disap-
. ~% K' _" n: c& ^4 d# Gpearance of pubic hair, normal growth velocity, and% _0 Y. s/ o1 M. w# c" w
decreased erections. The father admitted using a testos-. j* T% Q& B: M6 [
terone gel, which he concealed at first visit. He was
/ U; C) X Y/ J$ _9 x$ X" Qusing it rather frequently, twice a day. The Physicians’
% M9 s9 z3 G# L* ` a0 f+ QDesk Reference, or package insert of this product, gel or2 a$ m( x( S0 u- @4 ]! U4 }
cream, cautions about dermal testosterone transfer to8 R- V2 c6 Y" }( u: G
unprotected females through direct skin exposure.( V |7 V) A2 H. ~
Serum testosterone level was found to be 2 times the' r# t9 ]- H; [' e' ^& e B
baseline value in those females who were exposed to
0 k2 j9 h8 y( c7 G' B1 reven 15 minutes of direct skin contact with their male
& m; M1 x" J4 S! x1 r8 [& D2 ^9 Fpartners.6 However, when a shirt covered the applica-4 R/ Q# J; K4 D
tion site, this testosterone transfer was prevented.
% p }- z- V/ y' d: u1 O! o: [Our patient’s testosterone level was 60 ng/mL,
# x, w: V" y' P/ w8 ~* |which was clearly high. Some studies suggest that2 u7 K% x! D* F) `1 M2 ]% i% t6 C
dermal conversion of testosterone to dihydrotestos-6 J! x& Z0 |0 r% T$ v% x' z L" Y" D5 L
terone, which is a more potent metabolite, is more/ e$ W. c( V# w! }% b
active in young children exposed to testosterone
* v. H7 a9 ~( U3 T) `exogenously7; however, we did not measure a dihy-0 y0 t1 \0 Q9 m" y. ~# r! ~4 T
drotestosterone level in our patient. In addition to
' P/ e/ [) e) ~: Kvirilization, exposure to exogenous testosterone in8 N" p' K) U! H$ M4 z1 d8 H
children results in an increase in growth velocity and
2 A# Q$ ^9 n5 X0 Uadvanced bone age, as seen in our patient." @$ o1 T& o' z
The long-term effect of androgen exposure during! o1 V8 v, I. s6 _8 }% N' C' F
early childhood on pubertal development and final3 \, i* Y, s/ Q$ L6 |( {
adult height are not fully known and always remain+ u0 M, Q, n) Q+ z0 F0 o
a concern. Children treated with short-term testos-4 \$ b1 t# b) U6 {+ x. d' }
terone injection or topical androgen may exhibit some
: Q0 t# {. H3 t4 \( uacceleration of the skeletal maturation; however, after
- J) S9 j* z; t2 lcessation of treatment, the rate of bone maturation
. \3 U) V# Z/ i9 d% vdecelerates and gradually returns to normal.8,9 V9 l V0 L5 g( \4 {4 }
There are conflicting reports and controversy
+ w" E1 ]3 a3 y7 k) W+ q/ O& {3 Jover the effect of early androgen exposure on adult- l1 _& U/ l# ]$ w' J% _
penile length.10,11 Some reports suggest subnormal7 _- ^0 M' s9 o
adult penile length, apparently because of downreg-
& w5 t( Y @2 z2 Culation of androgen receptor number.10,12 However,! i" w7 x* x" s k
Sutherland et al13 did not find a correlation between
( D6 h- J$ B) z' rchildhood testosterone exposure and reduced adult' |( t4 q5 N7 ~" e. [! D
penile length in clinical studies.- H- d# L! G5 C: m
Nonetheless, we do not believe our patient is
) L. |/ {, J: |0 F( b; U$ mgoing to experience any of the untoward effects from
1 `' j) V9 n; Z: Q+ d7 dtestosterone exposure as mentioned earlier because2 {$ s0 J+ z! f7 B
the exposure was not for a prolonged period of time.
2 i( a3 \3 U6 ?Although the bone age was advanced at the time of
' }) w. }) _. v' R' |% |; y/ [diagnosis, the child had a normal growth velocity at. u5 U- V3 ?1 z1 z
the follow-up visit. It is hoped that his final adult
3 F* \# j6 k- F& L- `& ?height will not be affected.
8 Z; J& H* H6 ]# C/ W+ }Although rarely reported, the widespread avail-4 \7 _8 o. A5 n* t, U0 k
ability of androgen products in our society may
7 j3 |! Y9 p9 G. i3 O: _indeed cause more virilization in male or female
4 x5 X" b6 v' O- A6 ^) Wchildren than one would realize. Exposure to andro-) k( j& @6 k" m
gen products must be considered and specific ques-
$ e: M9 p8 N* R7 h& ^6 rtioning about the use of a testosterone product or, z: T+ u% m; D3 r, h9 m( c+ K
gel should be asked of the family members during @) J2 W. ^, r) E" v' F
the evaluation of any children who present with vir-
5 Y% `! E0 p% l, lilization or peripheral precocious puberty. The diag-+ i' C/ r0 B/ n0 X. p" _
nosis can be established by just a few tests and by
- Y7 x0 S9 o' g- N2 Uappropriate history. The inability to obtain such a
$ ] u" }0 v4 D2 s( P; b; w0 Mhistory, or failure to ask the specific questions, may3 R* v& o1 G- W# q/ e
result in extensive, unnecessary, and expensive
& U6 l/ e! T, e3 O, s Winvestigation. The primary care physician should be$ y% E- m8 J$ G# [1 [/ S& q z: j
aware of this fact, because most of these children
5 J5 Z# s* }" `- A) Wmay initially present in their practice. The Physicians’( k! ^3 R$ e& O4 K2 e1 g" F
Desk Reference and package insert should also put a, ^2 n. J8 ^' {! u4 q
warning about the virilizing effect on a male or
+ @0 M/ C. F/ q% i4 }2 yfemale child who might come in contact with some-% J$ y2 f( Y, p2 v! V, b
one using any of these products.# T2 N* ?! S) ^3 b5 w
References" l9 j6 f! M+ {8 E& h
1. Styne DM. The testes: disorder of sexual differentiation
5 d6 h7 K S c& Qand puberty in the male. In: Sperling MA, ed. Pediatric
/ w5 X$ b: G l& F9 ]5 PEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
3 r. V9 N, i( `2002: 565-628.
/ e6 g5 M# ?4 i+ G- R! k9 n2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
2 L: v: w3 a3 A7 qpuberty in children with tumours of the suprasellar pineal2 J( r6 t. E$ t) C: b! \6 {
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
y2 B+ ?+ t" N" N/ K0 uTopical Testosterone Exposure / Bhowmick et al 543; t7 [9 Q% ^9 a7 f8 |; d' l5 g+ G
areas: organic central precocious puberty. Acta Paediatr.2 y- m$ m6 @- W& e) O4 R0 D% p* A& R
2001;90:751-756.0 P$ B# I' K/ c; w9 Y5 j
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.4 d; x6 f) o, [3 f6 i3 p! r7 s
Pediatric Endocrinology. 4th ed. New York, NY: Marcel
# z. t2 a3 a: lDekker Inc; 2003:211-238.- I; D- c: l+ j( {5 l4 w
4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual1 y+ N: C* u* o3 C' S' N* J
development in a two-year-old boy induced by topical
; V2 V; P0 l- S( a0 Sexposure to testosterone. Pediatrics. 1999;104:e23.6 \; z) H5 x+ A* ]
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of- [. W% @! X& ^- V; p* S& k
Skeletal Development of the Hand and Wrist. 2nd ed.( P4 t0 y z n2 L. K; }
Stanford, CA: Stanford University Press; 1959.2 w- [" W# c$ m( M* c1 s$ Y0 H6 [ D
6. Physicians’ Desk Reference. Androgel 1% testosterone,4 `; F8 f7 S6 K! E6 Y7 Y
Unimed Pharmaceutical Inc. Montvale, NJ: Medical
- R, u C+ Q8 \, }# J, aEconomics Company, Inc; 2004:3239-3241.
0 i7 X# O( Y& v0 t' C) p7. Klugo RC, Cerny JC. Response of micropenis to topical
2 l, X: g$ D4 ftestosterone and gonadotropin. J Urol. 1978;119:- a1 ~" O( V, Q; }, D# k* L4 [
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