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is a significant concern for physicians. Central
O7 S! U$ o* W$ R. ~2 |" {% Wprecocious puberty (CPP), which is mediated
. h$ f$ N/ k8 @+ r% T O7 ?through the hypothalamic pituitary gonadal axis, has
* X o# x1 k, z }0 ja higher incidence of organic central nervous system# o" b) T" C9 K) N7 b0 G( h
lesions in boys.1,2 Virilization in boys, as manifested9 R, l' U' v' S% f
by enlargement of the penis, development of pubic
1 Y3 m4 e$ \- Bhair, and facial acne without enlargement of testi-% l! A% v D Q
cles, suggests peripheral or pseudopuberty.1-3 We
' k! C4 H' m* @4 ereport a 16-month-old boy who presented with the
3 g3 ~( A( l D/ v% w ?8 }enlargement of the phallus and pubic hair develop-
7 l0 z7 [) `( E2 L. G7 Vment without testicular enlargement, which was due
4 u' W5 |; l# Nto the unintentional exposure to androgen gel used by
6 n1 Q- Q Z. `the father. The family initially concealed this infor-5 p" M5 c, p, m, X0 H
mation, resulting in an extensive work-up for this
" B& v3 Q* }5 h+ G4 g& p* N5 w& Schild. Given the widespread and easy availability of
0 h; w: h' r# P! u3 dtestosterone gel and cream, we believe this is proba-- {; J! \3 K6 T/ G/ |5 ?
bly more common than the rare case report in the
& d5 C1 d) f; Iliterature.44 w/ Q" h5 L4 l: S
Patient Report
) y$ Q* n" s5 s: ^' tA 16-month-old white child was referred to the6 K7 m4 S5 w$ T8 [% t
endocrine clinic by his pediatrician with the concern1 \/ X1 \; F6 U2 ?$ f
of early sexual development. His mother noticed5 F( P3 r( K5 X9 G; N% k
light colored pubic hair development when he was
) Z2 o3 ~! t& I$ v F# |+ QFrom the 1Division of Pediatric Endocrinology, 2University of
2 a* M; k0 S5 ~+ K- f3 f$ L4 [South Alabama Medical Center, Mobile, Alabama.
5 ?' g# j* \* Y" {7 @5 ^Address correspondence to: Samar K. Bhowmick, MD, FACE,
* Y; _# r' b/ C9 rProfessor of Pediatrics, University of South Alabama, College of
: Y6 q& c6 X& o: v3 b9 w) Q! uMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
. E! j2 H- s- B: m- t3 x. Fe-mail: [email protected].
# W2 j3 R/ }! F0 |3 yabout 6 to 7 months old, which progressively became9 k$ j& d* R8 Y- ^! i9 z# k
darker. She was also concerned about the enlarge-! L2 F' k0 t7 W. H. _; b
ment of his penis and frequent erections. The child5 U. R6 C1 k6 D+ V' i2 @9 N5 l7 @
was the product of a full-term normal delivery, with
2 X; @8 J, {% K* z6 Y2 N* A% k8 sa birth weight of 7 lb 14 oz, and birth length of
2 C2 f$ N+ E3 Y* E4 {20 inches. He was breast-fed throughout the first year P/ Q# {9 d' g4 {' {
of life and was still receiving breast milk along with
+ q. G" S( |" [solid food. He had no hospitalizations or surgery,3 p, T- r0 Q$ j& ` e
and his psychosocial and psychomotor development% k8 k7 N- Y9 N. V
was age appropriate.
, P4 h* M4 {* T- R5 k, T* wThe family history was remarkable for the father,
, R6 ]9 L7 S! L- Z4 r4 L& }who was diagnosed with hypothyroidism at age 16,+ k6 i6 ^& i3 x9 X, h/ f
which was treated with thyroxine. The father’s2 d4 r; Z% z) C
height was 6 feet, and he went through a somewhat
" S, ^6 c3 B: Vearly puberty and had stopped growing by age 14.8 D, s; c" Y8 [+ E+ g9 x3 d
The father denied taking any other medication. The2 J) t2 Y7 H' ]
child’s mother was in good health. Her menarche* S& g' O2 K; F/ @$ y$ U/ ?
was at 11 years of age, and her height was at 5 feet
! G! ^, \/ p0 Y3 P2 ?$ _5 inches. There was no other family history of pre-% a: l% w/ M" l( N
cocious sexual development in the first-degree rela-
7 G) d& Y7 z/ i$ o2 otives. There were no siblings.* k) j9 x8 |3 i F c
Physical Examination
# r8 B% a% L! W2 u% F8 GThe physical examination revealed a very active,
' N- E/ A/ K- p) T+ K J+ T$ J& gplayful, and healthy boy. The vital signs documented
. Z) W# [: G7 d8 Fa blood pressure of 85/50 mm Hg, his length was9 j+ J1 }3 f$ q' k/ h- R
90 cm (>97th percentile), and his weight was 14.4 kg
# Q3 n" n5 U' m, k- Y(also >97th percentile). The observed yearly growth
" K; |/ M% |/ `* }velocity was 30 cm (12 inches). The examination of
: b0 ^: R8 ^- o3 c5 Q/ othe neck revealed no thyroid enlargement.
, r: [4 } A- B5 JThe genitourinary examination was remarkable for K, u9 o1 K- A' q
enlargement of the penis, with a stretched length of
1 Z8 K; N) M7 X# m7 q8 j8 cm and a width of 2 cm. The glans penis was very well3 p3 p& Q! ~; L, }$ v1 P2 W
developed. The pubic hair was Tanner II, mostly around
' S# T, F8 Z) z8 L" ]$ I540
" Z$ b7 _0 |3 U( Cat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from# r1 f( M. `1 B, j1 c# U r
the base of the phallus and was dark and curled. The8 _7 _+ |$ ^2 |( u/ z
testicular volume was prepubertal at 2 mL each.
$ N* d! w+ N6 RThe skin was moist and smooth and somewhat
' _+ r6 J" h9 h/ t: koily. No axillary hair was noted. There were no5 c7 s5 Y# R3 i3 \" |- Z; h
abnormal skin pigmentations or café-au-lait spots.! x" \+ W2 W2 n* z- e+ x. Q
Neurologic evaluation showed deep tendon reflex 2+
8 g+ {% S& s% @1 u2 Kbilateral and symmetrical. There was no suggestion
# n0 F8 W0 l9 H9 j+ {, _of papilledema.3 @/ X1 r- ?; m) K4 ?8 ?' F
Laboratory Evaluation' r- a. S: {" O& U# E9 F9 N# i
The bone age was consistent with 28 months by: G" g$ g: F" z% R3 w9 O. d- g2 z# [
using the standard of Greulich and Pyle at a chrono-- U6 M+ I# b# a
logic age of 16 months (advanced).5 Chromosomal
) i) R7 _* s! n4 I# w7 ekaryotype was 46XY. The thyroid function test
# y0 r' w9 L& L: c7 U* B- `showed a free T4 of 1.69 ng/dL, and thyroid stimu-
3 T( s2 V7 f" h- a) b0 I d/ Blating hormone level was 1.3 µIU/mL (both normal).
0 O6 k! R& ~5 q; ?$ d2 d- i. YThe concentrations of serum electrolytes, blood
) ~ k! U; ?. U! Eurea nitrogen, creatinine, and calcium all were) l+ \+ s" g$ }% R
within normal range for his age. The concentration1 ]+ T( r& H5 x; H: b8 d
of serum 17-hydroxyprogesterone was 16 ng/dL; u" v8 X1 ~8 G1 P; X S _, U
(normal, 3 to 90 ng/dL), androstenedione was 20
; G/ Q2 R& L0 d1 L- hng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-$ g8 g" j" V7 C& Y
terone was 38 ng/dL (normal, 50 to 760 ng/dL)," }* q, v/ v5 d/ }" W3 m
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
; S6 y$ t' Q* s1 |49ng/dL), 11-desoxycortisol (specific compound S)- Z2 L4 r$ T$ `& r* k
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-+ v8 M I @7 k# ]
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total- b( v. x6 t( f! P$ q
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),2 ?5 h& z/ T4 x8 M& e9 q
and β-human chorionic gonadotropin was less than
+ h: t3 R) A {& I3 {* R/ Y+ H/ [, @5 mIU/mL (normal <5 mIU/mL). Serum follicular }1 j! s2 N6 T# M, t# D
stimulating hormone and leuteinizing hormone7 h+ L& P8 f' ~; O
concentrations were less than 0.05 mIU/mL1 ], R- y1 T5 ^$ d2 s4 U/ a) f. K
(prepubertal).
& X3 O3 L: d9 L3 s' L2 l6 kThe parents were notified about the laboratory0 k( n( i# c! ?, _6 V
results and were informed that all of the tests were- b8 ~- k r% V* v/ g# k
normal except the testosterone level was high. The/ a- s. z+ M K7 @* ~
follow-up visit was arranged within a few weeks to
/ [/ D" i! w8 ^4 N1 A; |; uobtain testicular and abdominal sonograms; how-
. \/ { {$ ^3 V+ G0 Aever, the family did not return for 4 months., c8 m% a. | P! k% q$ c
Physical examination at this time revealed that the
1 j0 S9 u2 p2 j O7 jchild had grown 2.5 cm in 4 months and had gained" j1 {* M8 G1 ?& }% \5 x# i
2 kg of weight. Physical examination remained
+ n c) J: ]* k: V9 d5 c; D4 cunchanged. Surprisingly, the pubic hair almost com-5 X& m' `% t4 P/ _. l7 V2 C1 V- {1 i
pletely disappeared except for a few vellous hairs at
" T7 p2 y' Z* v) A- E4 ythe base of the phallus. Testicular volume was still 2
2 {, X, h" V4 S1 omL, and the size of the penis remained unchanged.' R. C% F7 O9 R8 ?( C: I" B
The mother also said that the boy was no longer hav-
6 }$ z1 \; Z4 d7 }( b: fing frequent erections.
- o/ u. X3 y& a2 g; SBoth parents were again questioned about use of. K) m( X* w1 i5 Q7 {4 k, N' A
any ointment/creams that they may have applied to
$ C1 \8 `9 A A# T! e+ gthe child’s skin. This time the father admitted the
$ T; w) |3 d- Z4 d5 }Topical Testosterone Exposure / Bhowmick et al 541' k2 N2 J7 O$ ~; L# Q
use of testosterone gel twice daily that he was apply-+ l/ {; I# h1 e( B
ing over his own shoulders, chest, and back area for
6 d3 @! z& s* fa year. The father also revealed he was embarrassed9 K: e& s; c, v" ~& b
to disclose that he was using a testosterone gel pre-
( n' @. ~/ R9 yscribed by his family physician for decreased libido
Q$ i4 F$ m+ `$ X+ f8 }secondary to depression.
0 l; s8 b9 `- ]1 c3 K7 iThe child slept in the same bed with parents.
1 j; ] i' o9 w" h: w" p6 nThe father would hug the baby and hold him on his4 c- |" P R% S5 P( b; C9 P5 S
chest for a considerable period of time, causing sig-
7 W/ f( _! Y! N- U. z: _" U! gnificant bare skin contact between baby and father.. b3 q: X: F# J( E. Y
The father also admitted that after the phone call," Q& X+ V$ F9 [9 U0 D9 W8 q
when he learned the testosterone level in the baby
/ R: ?; _) g r- f& I4 s7 _was high, he then read the product information& {9 f) W( w( h6 }$ j% R8 Y5 `8 y& g
packet and concluded that it was most likely the rea-
7 `# @- N+ L/ [son for the child’s virilization. At that time, they7 d# j/ S( a- Y! R' A3 A
decided to put the baby in a separate bed, and the
1 \, @5 D" ], j" t- P8 x: X' Ffather was not hugging him with bare skin and had
1 S% V' Y6 `7 T3 m9 `, abeen using protective clothing. A repeat testosterone, ^) L2 z$ d; c9 H. s6 o: ?
test was ordered, but the family did not go to the
$ K/ S, |+ j* E1 H8 N Y. zlaboratory to obtain the test.
2 F3 _! }, T0 e2 UDiscussion) I S9 i0 q; M) t8 o
Precocious puberty in boys is defined as secondary
! }1 b, f; C hsexual development before 9 years of age.1,4
! U9 T- z2 l2 I! x1 Z) x x( vPrecocious puberty is termed as central (true) when
/ M0 I5 ^( t* Pit is caused by the premature activation of hypo-
* U4 r3 ^& \! ~ r$ b1 g: i% w) hthalamic pituitary gonadal axis. CPP is more com-
8 j# i2 C, I( C) A* b; l& D+ Smon in girls than in boys.1,3 Most boys with CPP
( E# B y! ~+ r, n! N3 wmay have a central nervous system lesion that is& b; p0 h6 V& f" x, I& _
responsible for the early activation of the hypothal-
4 l. E8 A' G1 D4 u. G& _amic pituitary gonadal axis.1-3 Thus, greater empha-
/ K4 B( m9 ^2 Xsis has been given to neuroradiologic imaging in
) f& R; \1 d& P+ ^8 m5 i# gboys with precocious puberty. In addition to viril-
; q* Q1 p4 R+ f+ Y; i A; G& ?ization, the clinical hallmark of CPP is the symmet-5 j% a6 I2 p( M% ]
rical testicular growth secondary to stimulation by
. ~8 [3 ?- r' w; Hgonadotropins.1,3: o+ o1 r- [. ^' N! M% {8 X
Gonadotropin-independent peripheral preco-
) M/ s" o+ i+ W" W1 s6 acious puberty in boys also results from inappropriate9 L4 M; a$ o: Y6 `3 t/ p! W# L! K
androgenic stimulation from either endogenous or
+ }7 ^3 A5 |: G; Sexogenous sources, nonpituitary gonadotropin stim-! o( Q7 V6 ?9 r2 f
ulation, and rare activating mutations.3 Virilizing
' S; H1 ^0 b) ?, L k; Gcongenital adrenal hyperplasia producing excessive
- y, i) z. k2 h6 L) f! A/ kadrenal androgens is a common cause of precocious
+ ^8 s9 Y! Y a o2 bpuberty in boys.3,4' g Z4 O2 q8 M1 ]- x* q( t
The most common form of congenital adrenal
7 \8 ]/ d/ i3 U2 Bhyperplasia is the 21-hydroxylase enzyme deficiency.' ?& b* X+ \4 j3 H P
The 11-β hydroxylase deficiency may also result in
/ ^# K7 X, }) n% t0 _$ Jexcessive adrenal androgen production, and rarely,
( w6 t( O/ _( R( zan adrenal tumor may also cause adrenal androgen* j2 L; {5 y" O1 r
excess.1,37 o7 w3 E7 J8 G* f' ]
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
- l; n/ P/ b- s6 b542 Clinical Pediatrics / Vol. 46, No. 6, July 20072 d# A2 q/ {5 O$ z4 l
A unique entity of male-limited gonadotropin-
' E7 J1 l- p! h" Y+ zindependent precocious puberty, which is also known
0 H: }2 P: x, x% ^4 [8 E7 K" J' r Gas testotoxicosis, may cause precocious puberty at a. \4 n, J, T: s7 L; b, q7 d$ H8 t
very young age. The physical findings in these boys! @6 {7 _' p1 N
with this disorder are full pubertal development,3 r! s4 E( q( L, [' g
including bilateral testicular growth, similar to boys
# u" k! J) P+ f' L2 Z% q m9 ~with CPP. The gonadotropin levels in this disorder
# k5 J0 i2 o( D5 u1 y2 S2 gare suppressed to prepubertal levels and do not show
+ w; C& F6 U* Q9 b% E3 ^3 Wpubertal response of gonadotropin after gonadotropin-
. |6 w5 j" i" r5 T* ]& O* S+ Ireleasing hormone stimulation. This is a sex-linked) q( U& e6 Y7 S. T# D, [. t
autosomal dominant disorder that affects only1 Y+ Q" n" x8 K8 r: I: Q2 T
males; therefore, other male members of the family2 f# C. [0 e2 n9 W* a
may have similar precocious puberty.3. r7 l+ P& G3 f6 m0 H4 V7 d$ g
In our patient, physical examination was incon-
1 j6 c/ E/ F4 H8 F0 I) I: R- fsistent with true precocious puberty since his testi-/ g) g. z: p( _' p/ X
cles were prepubertal in size. However, testotoxicosis
0 A9 p# Y' I6 Z& B9 Pwas in the differential diagnosis because his father& U# {7 L, z4 e3 I% v7 V
started puberty somewhat early, and occasionally,( Z% b1 ? V- c1 y! `' M- ~
testicular enlargement is not that evident in the1 A/ J( ]3 S/ n
beginning of this process.1 In the absence of a neg-
* f' U& C6 B; P' f8 |+ c& oative initial history of androgen exposure, our
$ O5 [7 Y# C9 @biggest concern was virilizing adrenal hyperplasia,
9 S2 n( {. A) [3 ieither 21-hydroxylase deficiency or 11-β hydroxylase# g# g8 }$ x M& W& F
deficiency. Those diagnoses were excluded by find-- i9 W% g' s: D# L0 k! b) q/ H
ing the normal level of adrenal steroids.6 x+ k. k' [( v' u! N
The diagnosis of exogenous androgens was strongly
. V2 l& J J& z# I! I( w) Hsuspected in a follow-up visit after 4 months because
0 T# p o: w/ O' E) w5 athe physical examination revealed the complete disap-
5 P/ m- X& W# d' h" |' Z7 npearance of pubic hair, normal growth velocity, and
5 ^( r, X! u3 b( F# p) @decreased erections. The father admitted using a testos-+ U3 n, F' p0 f8 h, T8 |2 N1 d! S
terone gel, which he concealed at first visit. He was( u5 ~" `' ^. a; W% _; n, M/ D) {; \
using it rather frequently, twice a day. The Physicians’2 c9 W" V" f. Q1 b; r5 w
Desk Reference, or package insert of this product, gel or
8 S( b, i m0 N* P) pcream, cautions about dermal testosterone transfer to. O4 w9 v) W, H; I
unprotected females through direct skin exposure.. Q' ~- w% b1 _ t# Y
Serum testosterone level was found to be 2 times the3 y" V* V. r- V( d( p* G! S1 ]1 h
baseline value in those females who were exposed to4 @/ b2 E$ E# l: J: D
even 15 minutes of direct skin contact with their male* U- h, W8 c: v5 J" |
partners.6 However, when a shirt covered the applica-
9 w8 w } v0 E; Ction site, this testosterone transfer was prevented., w3 I4 D8 N" W3 V1 k! C& w
Our patient’s testosterone level was 60 ng/mL,# J/ n* L5 U. d. U
which was clearly high. Some studies suggest that- X5 R0 W5 c6 u
dermal conversion of testosterone to dihydrotestos-
. P8 Y: \2 F6 Q8 c9 ?terone, which is a more potent metabolite, is more
4 J- ` A. z/ O8 d, @' \4 Uactive in young children exposed to testosterone
/ T: \& K# m* t3 Y0 Xexogenously7; however, we did not measure a dihy-
" G2 }; ?! t' L1 ]7 Bdrotestosterone level in our patient. In addition to
+ l6 z5 t5 I* J7 jvirilization, exposure to exogenous testosterone in
5 M% J; `0 q0 [% cchildren results in an increase in growth velocity and
2 e* L0 B0 n5 b7 ^- D! v& ?) vadvanced bone age, as seen in our patient.6 |9 _' c) K) i; `$ G* S: l) A
The long-term effect of androgen exposure during7 l& o: `% H F4 R% p
early childhood on pubertal development and final
; e6 z% O# _! |4 }adult height are not fully known and always remain
0 U6 a7 x3 j* V( X y+ m2 @2 Y) Ga concern. Children treated with short-term testos-
4 h& M$ B- P: ?! O' Iterone injection or topical androgen may exhibit some
# L, m% v) [. x0 ]9 R; S# dacceleration of the skeletal maturation; however, after
9 g4 l8 O1 i) e2 m$ H; dcessation of treatment, the rate of bone maturation
) S, D( ^5 P" {7 ~/ H5 H: {decelerates and gradually returns to normal.8,9+ x6 u- a, e3 \3 s4 D
There are conflicting reports and controversy. u$ R5 i" X- b
over the effect of early androgen exposure on adult
9 F0 @: r4 Y4 g. Qpenile length.10,11 Some reports suggest subnormal6 k) s" X8 J1 m+ M& r7 n
adult penile length, apparently because of downreg-
; |! ~, ?/ ^+ z3 s, }" u' o: zulation of androgen receptor number.10,12 However,
- }' G- A. u8 T# [Sutherland et al13 did not find a correlation between
* d* I( @( I8 T* ~childhood testosterone exposure and reduced adult
3 ?# F/ Y' E+ ~+ l8 rpenile length in clinical studies.
" Q5 Q* a, w: k7 P' UNonetheless, we do not believe our patient is' T o6 D! c4 U! ]/ p$ Y
going to experience any of the untoward effects from
, a) c8 M7 ?" ]0 C, G* {0 Htestosterone exposure as mentioned earlier because! f& f* k/ U& T( g' o5 \& u1 N
the exposure was not for a prolonged period of time.9 |* ^/ X) e4 ?
Although the bone age was advanced at the time of; B# {; K" y$ E: e: R8 K. P
diagnosis, the child had a normal growth velocity at0 ~6 s e0 P; _$ H0 p
the follow-up visit. It is hoped that his final adult( Y9 L" J* K, V5 P* g N! t
height will not be affected.
2 J; z# {- D+ N1 fAlthough rarely reported, the widespread avail-3 A$ R: h( r" |. \7 T3 J
ability of androgen products in our society may8 w/ k6 K4 x" l/ r
indeed cause more virilization in male or female3 e: `/ c& H+ N" X, j3 [, ^
children than one would realize. Exposure to andro-- a& O% K4 u* P
gen products must be considered and specific ques-
5 k- j: @$ L$ C7 b( `tioning about the use of a testosterone product or7 g# K, q" `) P3 }8 I( S
gel should be asked of the family members during
, s- p+ H5 Y/ L& Kthe evaluation of any children who present with vir-. \! z( Z- J, [
ilization or peripheral precocious puberty. The diag-
( ^' J' g' G0 m/ g W' W% {nosis can be established by just a few tests and by* h8 w) _. B& S
appropriate history. The inability to obtain such a
6 |+ @* `, z* V& @# `/ _- Dhistory, or failure to ask the specific questions, may9 V9 h; a7 ^( Y4 b7 F
result in extensive, unnecessary, and expensive
0 G. a( \! u' h2 o4 @, ^1 Tinvestigation. The primary care physician should be
& }6 x5 {$ s5 ^1 o* B" G& Paware of this fact, because most of these children
/ T4 `2 K5 E$ n2 T2 r# Zmay initially present in their practice. The Physicians’/ ^# B% i- r M& T ]
Desk Reference and package insert should also put a
2 G, i" I- K7 O# @* y6 Zwarning about the virilizing effect on a male or; u9 b# ^# y6 f2 {9 P O
female child who might come in contact with some-
, E2 H6 @1 a2 J: A8 G2 p: I% }one using any of these products.
' p; t- Q ]4 W% x7 wReferences
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and puberty in the male. In: Sperling MA, ed. Pediatric; ?) {/ _: e! I9 D
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
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2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious# w5 B2 h& O/ H, M, |" h
puberty in children with tumours of the suprasellar pineal
: B# R# K% B. Q- s0 w* ]9 e5 w( ]at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from% q. M# [% x. T7 Z3 V
Topical Testosterone Exposure / Bhowmick et al 543! \: }" ^+ D& }$ U8 v! r: h+ W5 Y# ]$ T
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2001;90:751-756.3 j# o! i0 n* a) o+ ~. Q
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) W5 H' z8 ]% a6 T2 y% ^! YPediatric Endocrinology. 4th ed. New York, NY: Marcel
" a7 u2 @' C B6 X+ J1 A7 u* N8 ZDekker Inc; 2003:211-238.3 `# ?9 C4 M/ |6 d4 m
4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
+ B& Q7 q. V2 E, Bdevelopment in a two-year-old boy induced by topical
! S9 O O; U# X) X, eexposure to testosterone. Pediatrics. 1999;104:e23.5 U8 ]+ Z0 H, w l; a
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of" P5 v$ u; u8 g0 s" Y
Skeletal Development of the Hand and Wrist. 2nd ed.
1 ~9 s, K+ Y! U8 Q# a- fStanford, CA: Stanford University Press; 1959.$ G: e. V4 e* q- i. v7 X8 h2 ]+ _
6. Physicians’ Desk Reference. Androgel 1% testosterone,
- U8 h& y, N1 R$ XUnimed Pharmaceutical Inc. Montvale, NJ: Medical8 E6 Z9 v5 ]/ _6 e. v ?
Economics Company, Inc; 2004:3239-3241.
7 N' R; d. O1 f1 y! c2 G" p3 g# N! A7. Klugo RC, Cerny JC. Response of micropenis to topical
& `/ b' x A! J/ I0 gtestosterone and gonadotropin. J Urol. 1978;119:' @5 Z* t* @" f; o, |
667-668.# v! ^+ [( ^8 x1 @; j" y5 O
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