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is a significant concern for physicians. Central
" y+ l8 Y' a; ]0 n Eprecocious puberty (CPP), which is mediated* g" {) o2 K1 }5 l' q
through the hypothalamic pituitary gonadal axis, has' x' f) o! a6 q4 P6 m; G
a higher incidence of organic central nervous system9 h2 E' h9 t6 I, ?1 ~4 I" H
lesions in boys.1,2 Virilization in boys, as manifested
- M% S. a, D) `2 lby enlargement of the penis, development of pubic
, T( R, t1 Q: U% B2 {hair, and facial acne without enlargement of testi-0 B7 F8 v9 }* |; o
cles, suggests peripheral or pseudopuberty.1-3 We5 i a4 x7 Q2 W% H
report a 16-month-old boy who presented with the
) L# E) e7 X- v/ `7 nenlargement of the phallus and pubic hair develop-
: K9 `( a# ~1 N# ?* S |! ement without testicular enlargement, which was due
/ F! h" @) v, E0 B* U4 Ito the unintentional exposure to androgen gel used by5 w, U$ z1 S7 h7 J0 f( o) I
the father. The family initially concealed this infor-
) P/ F |/ S4 j1 @4 fmation, resulting in an extensive work-up for this
( q# M9 F0 y( K. `child. Given the widespread and easy availability of
* w: I" g- W3 xtestosterone gel and cream, we believe this is proba-
) [2 |( u9 P7 c$ s6 ^bly more common than the rare case report in the
4 ?2 e8 |6 Z: Mliterature.46 J! z% F; i0 `! a) M
Patient Report
3 B( N1 ]% a/ w! I! z8 z) s% aA 16-month-old white child was referred to the7 [) u3 {5 Z2 ~9 [& s' ]! }, H: V6 D
endocrine clinic by his pediatrician with the concern, } O8 j& M- T% Z9 v+ H r9 ^
of early sexual development. His mother noticed: C* Q+ b+ ^; o* }4 A
light colored pubic hair development when he was# } v! s5 f2 h( C
From the 1Division of Pediatric Endocrinology, 2University of
/ [% m2 T7 M& G6 _; v/ Y0 i, ~South Alabama Medical Center, Mobile, Alabama.; f( ~2 t! T2 C) b& J; m3 ]
Address correspondence to: Samar K. Bhowmick, MD, FACE,
2 [; e1 g# a2 o v8 z, ~8 q" ZProfessor of Pediatrics, University of South Alabama, College of# W }1 I% I+ i/ \4 A& t9 R3 w. U
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
: N# u X; N8 p* [+ R. le-mail: [email protected].
$ ~# J* [( f5 G9 R A, }+ aabout 6 to 7 months old, which progressively became
, V! c4 R# |' f& B* x+ f% tdarker. She was also concerned about the enlarge-5 o% ?$ ?$ F7 I o. i) ]1 e
ment of his penis and frequent erections. The child
$ }4 Z0 a1 x+ |was the product of a full-term normal delivery, with s; w5 w' x& u" I4 |6 f
a birth weight of 7 lb 14 oz, and birth length of
: w9 u! f/ j* X: a* i20 inches. He was breast-fed throughout the first year
; e2 P/ t n7 b" l3 dof life and was still receiving breast milk along with
* Q( `2 {6 H0 O, Y% psolid food. He had no hospitalizations or surgery,
1 V; L; \5 L1 ?& g" jand his psychosocial and psychomotor development
! `# ~; ~0 K; [! S0 d4 Dwas age appropriate.
" Y) S" D9 m9 W3 _6 l- XThe family history was remarkable for the father,! M6 N, p6 V- I1 o
who was diagnosed with hypothyroidism at age 16,
$ B, ~& R4 C/ }$ {3 k/ a. R" Kwhich was treated with thyroxine. The father’s0 N* w& R& x3 e
height was 6 feet, and he went through a somewhat
, [! z7 H9 k0 s' }9 Aearly puberty and had stopped growing by age 14.% \0 G: L( j9 q. O
The father denied taking any other medication. The! L! e1 k: b) J7 f9 l& R V
child’s mother was in good health. Her menarche
6 A$ D- W% w& [* o0 I% j$ d/ Gwas at 11 years of age, and her height was at 5 feet
) a1 j/ W+ r+ |4 S1 P5 W; s5 inches. There was no other family history of pre-
U6 m4 T/ w. g5 N3 A B6 a& \cocious sexual development in the first-degree rela-& \) l' k& |, }: P
tives. There were no siblings./ M1 B. p; T/ C2 y+ \
Physical Examination
6 @1 D' M3 ^+ H; LThe physical examination revealed a very active,3 u% K: f( |& b5 H5 ^: v6 S A- L2 \+ y- e
playful, and healthy boy. The vital signs documented" `2 o- @+ h; ^) }+ Y
a blood pressure of 85/50 mm Hg, his length was
3 N7 f9 f& W4 W l90 cm (>97th percentile), and his weight was 14.4 kg
, s' F# N8 o O9 v(also >97th percentile). The observed yearly growth
1 ], }2 v9 _& {velocity was 30 cm (12 inches). The examination of, V( J* i+ k3 F+ U; V$ ?
the neck revealed no thyroid enlargement.
2 F/ I; w* s1 i' Y4 }! zThe genitourinary examination was remarkable for
* F0 H& K" V0 n$ b3 f4 G# {enlargement of the penis, with a stretched length of, Q) G T* K; M M7 f* U# |
8 cm and a width of 2 cm. The glans penis was very well
7 t7 F0 ^5 P5 G! Z: n2 Pdeveloped. The pubic hair was Tanner II, mostly around
B& V% u- A2 G. n540
b6 z. H6 N, c* O' Bat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
* J! r/ \% O- T- \5 E. {the base of the phallus and was dark and curled. The2 f5 L2 I0 U+ ?/ t3 O2 a3 f
testicular volume was prepubertal at 2 mL each.9 q2 Z- j7 t; f' }' c
The skin was moist and smooth and somewhat' h& Q6 [' l3 G s8 n$ {. W
oily. No axillary hair was noted. There were no
9 H8 N8 b. i- Rabnormal skin pigmentations or café-au-lait spots.
7 `% g5 L! G: P' _/ g0 MNeurologic evaluation showed deep tendon reflex 2+
# F; M- A* U9 F- u pbilateral and symmetrical. There was no suggestion" f7 Q( U2 @. g8 ?
of papilledema.
5 T; D: O0 \' Y& p: o. _Laboratory Evaluation
2 n: |% ^7 y9 fThe bone age was consistent with 28 months by8 c/ L" N0 i8 ?) H
using the standard of Greulich and Pyle at a chrono-' ]# P4 R" Q" P: Q" u
logic age of 16 months (advanced).5 Chromosomal
" u K7 C3 w. n7 H' N' }3 jkaryotype was 46XY. The thyroid function test" c% u" x; P E- L5 i! Y
showed a free T4 of 1.69 ng/dL, and thyroid stimu- F# [, _9 [1 j) _
lating hormone level was 1.3 µIU/mL (both normal).
% v8 w+ T* |2 s! I1 X) xThe concentrations of serum electrolytes, blood
$ n# x- k9 P. }4 v# Qurea nitrogen, creatinine, and calcium all were& [/ t) @1 f9 {2 C8 w( p- T
within normal range for his age. The concentration
9 }5 y( I# h9 b1 F4 r# Jof serum 17-hydroxyprogesterone was 16 ng/dL# r; e/ |2 F X! @' B% B1 i- z
(normal, 3 to 90 ng/dL), androstenedione was 20
- A. u' F" a2 Y c; \ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
+ e3 l9 x, R0 t, E! ]5 Yterone was 38 ng/dL (normal, 50 to 760 ng/dL),
+ t7 D0 c5 t2 b4 o1 B; C" a6 ddesoxycorticosterone was 4.3 ng/dL (normal, 7 to
" m2 t! ~% j, C" p3 D49ng/dL), 11-desoxycortisol (specific compound S)
6 e0 C& K- @; ~. `* k$ hwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-8 V" J7 @. A; p+ k4 p6 ]9 }
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total4 R8 A2 h: D# q- O; ?9 s0 q
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),, v o/ ^7 k- t$ R' T c) N! x0 |
and β-human chorionic gonadotropin was less than
4 M) _/ o2 V2 K1 I5 mIU/mL (normal <5 mIU/mL). Serum follicular$ @+ ~# C2 P- j- z. b
stimulating hormone and leuteinizing hormone) H. C2 e5 {. Q% H6 K
concentrations were less than 0.05 mIU/mL/ C5 d1 W! j6 Z$ Y
(prepubertal)./ T. P6 f# g4 Y4 y
The parents were notified about the laboratory
) X8 }0 J: Y. j ]1 ~5 A2 [% s9 Dresults and were informed that all of the tests were
* J- u3 V/ z/ I) F: Dnormal except the testosterone level was high. The
6 ]1 Q2 N% ^/ ]0 y2 mfollow-up visit was arranged within a few weeks to
& [1 |. y5 Z; H4 M+ p0 U2 D: |% hobtain testicular and abdominal sonograms; how-
0 Y. P/ y, W' M( `- kever, the family did not return for 4 months.2 o& d7 Z; L) z$ ]) u
Physical examination at this time revealed that the% L# E% t( Y% d/ D" `$ y# L2 J
child had grown 2.5 cm in 4 months and had gained
/ q. u& S1 K9 Q2 kg of weight. Physical examination remained" w: g+ _, ]0 t9 U( e& U
unchanged. Surprisingly, the pubic hair almost com-# q. S0 N7 ?, L" Y8 M) ~6 @
pletely disappeared except for a few vellous hairs at
4 \/ i/ s( Y8 fthe base of the phallus. Testicular volume was still 21 }& @" o$ F* F, |
mL, and the size of the penis remained unchanged.
" q: P6 q5 J! e( k7 [/ kThe mother also said that the boy was no longer hav-
: }& c" b# x; Y- T5 Z6 m& iing frequent erections.' r3 j$ @( D: N6 s1 U$ q
Both parents were again questioned about use of
: w( B a/ S8 Q( ?, ], Jany ointment/creams that they may have applied to
1 k4 u$ h' B7 E8 s; ^4 Wthe child’s skin. This time the father admitted the
8 P% G9 [0 I( j1 s- `Topical Testosterone Exposure / Bhowmick et al 541
! M/ \7 A5 l! s+ z- m% k; x! Kuse of testosterone gel twice daily that he was apply-
! z7 Z3 }1 g+ T0 Oing over his own shoulders, chest, and back area for+ I- y( e4 _1 A9 s# n$ }
a year. The father also revealed he was embarrassed n6 Z1 [( d9 }8 L( ?
to disclose that he was using a testosterone gel pre-9 ~' _$ E3 T& |: \4 m
scribed by his family physician for decreased libido
7 l. Q! j/ e' Ysecondary to depression.
; a, G7 V# a7 ?: [, C5 |# O8 s8 LThe child slept in the same bed with parents.1 w4 h( O( O5 C. Y) B2 t3 h' B7 G& J
The father would hug the baby and hold him on his
6 | t9 g8 A9 {8 [8 F, N/ Tchest for a considerable period of time, causing sig-
* b2 z3 ^1 N! D) D. U* Inificant bare skin contact between baby and father.1 p) U1 Y" `0 @
The father also admitted that after the phone call,! A- q3 X0 \5 s: r# ^7 j5 C( `
when he learned the testosterone level in the baby
- i n! u7 z" `3 ywas high, he then read the product information9 c6 n H5 Z* a+ X$ S
packet and concluded that it was most likely the rea-
1 @" x: r, L1 [* pson for the child’s virilization. At that time, they% } R1 ]5 b8 n5 B, \
decided to put the baby in a separate bed, and the- \* N q6 D7 P c! z0 y& y, s% a
father was not hugging him with bare skin and had
5 v$ ~" Z; T- z2 q7 B4 _/ |been using protective clothing. A repeat testosterone
y' {. d) r! L1 T' x9 Utest was ordered, but the family did not go to the
- q- E6 |" z, E' |% H/ dlaboratory to obtain the test.5 a2 A/ T% i" P) l
Discussion
5 U& V$ g7 q$ g- \ V/ c) F+ WPrecocious puberty in boys is defined as secondary( f' n: F& W) h5 V4 n
sexual development before 9 years of age.1,4 R' x3 v7 b' P2 K! k& b+ ~6 C7 @
Precocious puberty is termed as central (true) when
9 q1 \' J: l# l6 tit is caused by the premature activation of hypo-
! E; t* A, h9 p6 T) B+ ~; othalamic pituitary gonadal axis. CPP is more com-
' m* ?) ?% {# V2 f, I# j, k7 amon in girls than in boys.1,3 Most boys with CPP& ~7 C( }# j9 L" K" P. C2 p! E
may have a central nervous system lesion that is* X) s6 r$ |1 v! b; V% H
responsible for the early activation of the hypothal-6 B0 y/ p7 n' U& C5 \
amic pituitary gonadal axis.1-3 Thus, greater empha-
8 I' q# i' J) G9 S2 ]sis has been given to neuroradiologic imaging in
M% z! N+ p, j. j0 P6 sboys with precocious puberty. In addition to viril-
& y6 H% \4 ~9 b0 G4 G7 uization, the clinical hallmark of CPP is the symmet- g1 i) h9 ~& O E" m5 h, R3 V4 d, g: t9 p
rical testicular growth secondary to stimulation by
+ i5 x1 A) `& {; g% D( O1 W, tgonadotropins.1,37 \. L g+ k H7 V- p
Gonadotropin-independent peripheral preco-
5 N+ |+ N& s0 k2 x- ], ?6 `7 U- Acious puberty in boys also results from inappropriate
8 _- Y2 h' J5 f- y0 b- Z9 M, handrogenic stimulation from either endogenous or& p$ s* Z y# f" w/ l0 R/ J; Y
exogenous sources, nonpituitary gonadotropin stim-
0 V m3 S G" uulation, and rare activating mutations.3 Virilizing
1 _4 v- Z! r- a0 ^congenital adrenal hyperplasia producing excessive1 U4 Y0 G; I4 |. k
adrenal androgens is a common cause of precocious
9 X' n# W, r4 hpuberty in boys.3,4
/ Q: ]: }5 |) s+ U4 l- y/ wThe most common form of congenital adrenal1 J* m6 x. @; a9 V! c5 p5 D
hyperplasia is the 21-hydroxylase enzyme deficiency.
; f* b A/ A9 XThe 11-β hydroxylase deficiency may also result in+ I8 ?. o) f" Z8 y2 A
excessive adrenal androgen production, and rarely,
, F% @2 T6 y. T8 G. ~9 H; [an adrenal tumor may also cause adrenal androgen
( c, e0 r. B% h3 s6 t5 G B6 Aexcess.1,35 f& f0 A2 H2 F4 _. j0 W; N' C
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
2 o7 j' P4 J' T/ ^2 n542 Clinical Pediatrics / Vol. 46, No. 6, July 20076 m8 w H+ p; M% ` s/ S, I6 c3 b
A unique entity of male-limited gonadotropin-5 D* b* e* h9 B
independent precocious puberty, which is also known
4 E% }" |2 L: W. Ias testotoxicosis, may cause precocious puberty at a
% X$ b! ~8 e. ^! W7 r5 b7 Qvery young age. The physical findings in these boys" q/ }6 M* Y3 O* j; G
with this disorder are full pubertal development,
6 G3 T: p1 M+ y* zincluding bilateral testicular growth, similar to boys
) H5 Z3 s+ j3 X; dwith CPP. The gonadotropin levels in this disorder+ I! q' \( i3 g6 G
are suppressed to prepubertal levels and do not show! Z) @7 p' A6 j" l0 L+ I: C
pubertal response of gonadotropin after gonadotropin-) n' I1 a5 T( V# M, w9 `& _; ?
releasing hormone stimulation. This is a sex-linked4 ~ V) e7 Z: t8 Z! K
autosomal dominant disorder that affects only
5 B$ Y$ \' V3 P0 S% ^. \, kmales; therefore, other male members of the family" b L6 q+ \; f* E9 L
may have similar precocious puberty.3" d0 H% @$ Y, H. V
In our patient, physical examination was incon-
4 y( R/ m: C, v+ Y- j! Bsistent with true precocious puberty since his testi-7 `! ~5 N, J5 Q" I3 r7 t
cles were prepubertal in size. However, testotoxicosis
+ C; z" N/ ^5 Twas in the differential diagnosis because his father, y3 E1 O: c- S0 Q+ }) H
started puberty somewhat early, and occasionally,# r6 n4 `( R+ J, o3 l8 k( M
testicular enlargement is not that evident in the
* L0 W7 U5 P/ m$ `/ ^6 G5 bbeginning of this process.1 In the absence of a neg-
( _0 g; L, G" o: E. x+ Xative initial history of androgen exposure, our
8 F. ^; c3 y# l9 g& F# Xbiggest concern was virilizing adrenal hyperplasia,. a8 I6 U- ?7 U* f# ~# \
either 21-hydroxylase deficiency or 11-β hydroxylase0 s7 r9 O/ h) T. r% m# c
deficiency. Those diagnoses were excluded by find-% g, Y- M2 S4 ~/ _ C# u" ?
ing the normal level of adrenal steroids.
) E& X$ }8 g b! }% {The diagnosis of exogenous androgens was strongly) o5 ]) Z( H8 R3 j$ Z, f; X1 f
suspected in a follow-up visit after 4 months because
( H' M2 `( |3 p: o+ D5 X3 Z' dthe physical examination revealed the complete disap-0 {1 s+ b- T# e% W2 p% U
pearance of pubic hair, normal growth velocity, and
6 I# I% W, `8 q0 Rdecreased erections. The father admitted using a testos-& e0 c$ d8 u c2 y$ m
terone gel, which he concealed at first visit. He was. j, M9 r, M: p
using it rather frequently, twice a day. The Physicians’
3 ^9 T5 d2 b2 wDesk Reference, or package insert of this product, gel or% m& |+ J- [! U2 a/ O) L
cream, cautions about dermal testosterone transfer to) Y3 L& Z4 F( i# [! [) p; a6 [0 y3 U. ^
unprotected females through direct skin exposure.+ c Q1 N8 t7 q
Serum testosterone level was found to be 2 times the4 n2 [- F0 O& v5 g
baseline value in those females who were exposed to: V( C# f' l% y% ]& J2 u
even 15 minutes of direct skin contact with their male" J+ ]/ U' m' D! Q4 d# @
partners.6 However, when a shirt covered the applica-
) f7 o B& T# Q2 Ktion site, this testosterone transfer was prevented.! w5 [7 U+ g0 t
Our patient’s testosterone level was 60 ng/mL,
7 z6 ?0 Y+ o/ uwhich was clearly high. Some studies suggest that
8 Y9 ]0 u5 A5 V: E5 F; T9 cdermal conversion of testosterone to dihydrotestos-! |) s7 g5 {: H0 q% p8 d
terone, which is a more potent metabolite, is more" d% k( v9 |+ y+ y
active in young children exposed to testosterone$ m, E: h; x, l7 y4 V; W- x
exogenously7; however, we did not measure a dihy-
. k B# _. z: mdrotestosterone level in our patient. In addition to6 A! t4 F$ [- v9 Q
virilization, exposure to exogenous testosterone in
0 b- Q2 [/ r* P1 {/ achildren results in an increase in growth velocity and
: h9 d+ q/ h* ?; \advanced bone age, as seen in our patient.' b9 j) J. }* P( A5 ]4 k' ]
The long-term effect of androgen exposure during+ ^$ t2 ^2 s8 n- l2 Y$ G0 {
early childhood on pubertal development and final
! A6 `. c: v7 P) _6 ]; k: uadult height are not fully known and always remain
6 |, T3 s" f$ |3 `# Q \& _; ra concern. Children treated with short-term testos-* E+ s# K# G7 J) n' P& I6 R# I; e
terone injection or topical androgen may exhibit some
U( s' S6 K7 k0 ^# m- O. V! d# vacceleration of the skeletal maturation; however, after
' n- k" j. q9 y Scessation of treatment, the rate of bone maturation
/ l: J! V% L( l5 d3 Kdecelerates and gradually returns to normal.8,9
3 z# j/ ]! t, S+ w: `4 lThere are conflicting reports and controversy
, F$ n9 M( s( Wover the effect of early androgen exposure on adult
- i- M6 B' n- q9 j1 W- Gpenile length.10,11 Some reports suggest subnormal+ n+ R2 F- x; c O4 {1 \9 x
adult penile length, apparently because of downreg-
; A! `$ {& d) ^' }' @$ T/ pulation of androgen receptor number.10,12 However,
- M+ B; \0 K/ I: _* fSutherland et al13 did not find a correlation between
( R! Z! j0 e+ d ?* Zchildhood testosterone exposure and reduced adult
& |/ F4 o- r/ F# X' epenile length in clinical studies.
: N! D, O& N7 I8 o$ N) l: j7 pNonetheless, we do not believe our patient is
9 n6 Q8 f3 U- k6 a T" Kgoing to experience any of the untoward effects from
5 k8 Q6 q4 L$ M% C0 A5 atestosterone exposure as mentioned earlier because
* }& K6 T2 I# c/ i3 Ethe exposure was not for a prolonged period of time.1 _3 z* s u |7 _
Although the bone age was advanced at the time of
& E; @) z/ l# m& T, ^% X5 pdiagnosis, the child had a normal growth velocity at
; V% l p$ r, ~the follow-up visit. It is hoped that his final adult: Y* Z$ v) ?, ?) z9 P7 X: x/ L
height will not be affected.! T; R$ m# P- Y& @, y
Although rarely reported, the widespread avail-
' h! ~( K. y) C9 O4 v2 xability of androgen products in our society may
1 h9 \ R1 K& t( f3 n6 ]indeed cause more virilization in male or female! s- t7 F' l* V# G
children than one would realize. Exposure to andro-) T$ g& R( c& f& A* ]0 e
gen products must be considered and specific ques-
/ q' b) o2 P/ Htioning about the use of a testosterone product or& [6 ]5 \( K. n2 Q
gel should be asked of the family members during/ Q; ~: |. a: X: ^2 o! @; C
the evaluation of any children who present with vir-
. _8 n% y. j ?2 t. hilization or peripheral precocious puberty. The diag-7 }+ N% A4 H8 @
nosis can be established by just a few tests and by+ G1 ~; r' N- q
appropriate history. The inability to obtain such a) y! R6 l( q2 H0 V! [" H
history, or failure to ask the specific questions, may' e7 A$ v3 r, r1 g* Y2 Q
result in extensive, unnecessary, and expensive
* ^' ^5 A$ ^# m5 T9 Q5 \2 ^/ `investigation. The primary care physician should be
' q4 ]2 H8 o# P9 I3 Z; Z/ S6 Caware of this fact, because most of these children
( ~( [ M/ t- i2 u+ t9 wmay initially present in their practice. The Physicians’
) _: w, \8 T! |4 B; |! g+ iDesk Reference and package insert should also put a' r3 x6 z1 V3 t1 q
warning about the virilizing effect on a male or
G) N' w# A5 @" A8 ?" vfemale child who might come in contact with some-) p# b7 c: k8 f2 h: J* i' O
one using any of these products.
+ b7 D0 f2 C, i' y! Q% B4 l! ^References8 Y) q1 E$ @" K! ~3 p
1. Styne DM. The testes: disorder of sexual differentiation
) G6 S- \' Z4 {& `) G3 K; uand puberty in the male. In: Sperling MA, ed. Pediatric
7 t; @% L' ~0 ?9 p9 h/ lEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
+ w; X4 r, x3 V' R. K2002: 565-628.
0 A5 F) Z- {( z! r$ v8 @2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious% r% l+ g6 I7 N* b3 S2 F
puberty in children with tumours of the suprasellar pineal: g* P1 N: y4 C! z5 t& C3 ]
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Topical Testosterone Exposure / Bhowmick et al 543/ y$ o \* v) V
areas: organic central precocious puberty. Acta Paediatr.4 F! S/ h% Y6 n* l6 h, [- n4 u# O
2001;90:751-756.( [% Z: D! B3 B; q
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
3 {3 \' v+ |8 r; Q6 u2 tPediatric Endocrinology. 4th ed. New York, NY: Marcel2 f/ S9 b6 t9 L: |6 W% l: q5 }, E
Dekker Inc; 2003:211-238.
2 |; I5 I8 b7 V# X' j4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
5 c* E' G4 f* K" c. G5 n- qdevelopment in a two-year-old boy induced by topical; D$ y& |4 D5 N6 J
exposure to testosterone. Pediatrics. 1999;104:e23.. B2 I* ^* e3 q6 E; b- ?' s
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of2 [' N* @6 F2 [( K
Skeletal Development of the Hand and Wrist. 2nd ed.
: ^. G4 F: N) [6 aStanford, CA: Stanford University Press; 1959.' L% \* O' h7 \0 ^! ]$ K2 `1 }9 x8 U
6. Physicians’ Desk Reference. Androgel 1% testosterone,
, r/ \4 A1 y% p$ cUnimed Pharmaceutical Inc. Montvale, NJ: Medical
4 p3 R% T9 U; A1 Z: H* vEconomics Company, Inc; 2004:3239-3241.. k$ X8 A" g; W/ `) o9 A# q K
7. Klugo RC, Cerny JC. Response of micropenis to topical
0 X! c) x# b' mtestosterone and gonadotropin. J Urol. 1978;119:
( d4 O! W: X5 B7 i% B667-668.; J( {: o# z7 E4 ]# V0 _5 t
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