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is a significant concern for physicians. Central* X& T3 ~" o1 _$ T
precocious puberty (CPP), which is mediated
# P! u$ u4 y! } f6 O6 ~* Kthrough the hypothalamic pituitary gonadal axis, has/ ]$ \; y. T- F. R; l+ q& ?
a higher incidence of organic central nervous system
+ j8 l3 O5 J1 M" B7 L0 nlesions in boys.1,2 Virilization in boys, as manifested+ K: m8 R) h3 l C
by enlargement of the penis, development of pubic
7 j. Q& O9 m" H: rhair, and facial acne without enlargement of testi-% g/ b6 h% {) e6 L( u" r
cles, suggests peripheral or pseudopuberty.1-3 We
; _* `+ J; x) M$ t, Lreport a 16-month-old boy who presented with the) {. X* \3 s3 X7 G& V
enlargement of the phallus and pubic hair develop-: |- O8 a* p% O
ment without testicular enlargement, which was due1 |8 b1 S, p: A) C. W2 W1 ^* v+ ]
to the unintentional exposure to androgen gel used by8 Q/ g, [7 A. Z# G
the father. The family initially concealed this infor-9 p# M: ^/ r1 c h+ K" f$ z- Z
mation, resulting in an extensive work-up for this* H5 J$ J: e+ j% o! }5 H
child. Given the widespread and easy availability of2 W2 f: q/ A' ?9 X& O* ]! I# y
testosterone gel and cream, we believe this is proba-7 X9 I, r. C: Q1 U
bly more common than the rare case report in the
5 T7 ?: J4 n: B8 Sliterature.4; T: l) R B# n. m2 W
Patient Report
8 ?& s4 m, b0 D# O IA 16-month-old white child was referred to the# l1 o% V$ T' r1 W: \
endocrine clinic by his pediatrician with the concern1 X2 G+ b& u* X# N } Q/ d
of early sexual development. His mother noticed+ y' c4 [2 Y" P1 ^
light colored pubic hair development when he was
9 |1 }0 S- S: T& {; ^% C+ wFrom the 1Division of Pediatric Endocrinology, 2University of
2 h% W3 x9 h! W% P/ d- B r$ |" pSouth Alabama Medical Center, Mobile, Alabama.
2 z1 y# d: k2 Y7 P. v LAddress correspondence to: Samar K. Bhowmick, MD, FACE,& L9 x. ^' V* o6 r: N. O
Professor of Pediatrics, University of South Alabama, College of6 `9 @ G: ~/ K
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
$ s' v1 K2 t4 f' Y" ee-mail: [email protected].
/ j3 {. K" G! B k8 q5 k: Dabout 6 to 7 months old, which progressively became
7 x" b% Y& Z5 _0 s* sdarker. She was also concerned about the enlarge-" g/ e; M- B# ]7 K/ J3 v
ment of his penis and frequent erections. The child
4 b' J/ Q, _3 S: J5 h2 lwas the product of a full-term normal delivery, with) c V: V X' W1 s$ @. X
a birth weight of 7 lb 14 oz, and birth length of
4 p5 ~5 h# \9 M8 Z$ ~& k( R20 inches. He was breast-fed throughout the first year2 i" G C7 ?) \
of life and was still receiving breast milk along with
8 `" b; S) Y% _, R9 u- @; o- i1 q& fsolid food. He had no hospitalizations or surgery,5 [. j9 g0 y ]7 s7 G& D$ z
and his psychosocial and psychomotor development6 _* K1 v' _$ s# Y" a8 V2 A0 \! c# t
was age appropriate.8 b6 w7 ?2 c. M
The family history was remarkable for the father,
9 h" J/ u% _. p9 N0 nwho was diagnosed with hypothyroidism at age 16,
7 L8 e" A% ~3 a( Hwhich was treated with thyroxine. The father’s5 ^' D, |7 @; V# t# k6 I8 j
height was 6 feet, and he went through a somewhat
" d7 q h5 @, G$ O1 B. searly puberty and had stopped growing by age 14.: H7 l4 L% m$ q
The father denied taking any other medication. The
' k J" U1 }/ Nchild’s mother was in good health. Her menarche
8 h; _7 Y* K5 j7 Y6 Zwas at 11 years of age, and her height was at 5 feet
& p) [, @) x6 P7 d5 X5 inches. There was no other family history of pre-2 ~- g5 {+ K! H& Q$ v5 G
cocious sexual development in the first-degree rela-# b; B; \% s1 c$ X
tives. There were no siblings.
0 Y% w+ S) w5 ~5 WPhysical Examination0 v& k) m; {- g& z+ o
The physical examination revealed a very active,
' I! F3 `- e( ^* \playful, and healthy boy. The vital signs documented8 l5 H, e0 K+ k0 m" |6 L4 |7 R) U
a blood pressure of 85/50 mm Hg, his length was
) ^7 F& P" D6 l# f90 cm (>97th percentile), and his weight was 14.4 kg4 V6 g: R7 b: |( ?5 X: `
(also >97th percentile). The observed yearly growth- b% b1 g/ `: m. G; B4 m
velocity was 30 cm (12 inches). The examination of
7 y& r' M) x6 `' J7 M" o3 G6 k7 @the neck revealed no thyroid enlargement.
4 q+ D) C& l! E* g0 CThe genitourinary examination was remarkable for- u8 P+ o7 t# b$ V. h$ j; _9 z6 t
enlargement of the penis, with a stretched length of6 l" v3 ^0 L; o
8 cm and a width of 2 cm. The glans penis was very well
3 a4 w" j$ Y: c6 Hdeveloped. The pubic hair was Tanner II, mostly around. H8 N; l; t' T- q; V- i. D
5408 L- ^! e5 r% H' {8 g0 f& j- z
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from s# T9 R& F( L3 R+ p: a8 d# K& H* G
the base of the phallus and was dark and curled. The% t0 g. I$ \4 B6 `
testicular volume was prepubertal at 2 mL each.1 S1 Z* t8 J8 ?2 Z" B. v
The skin was moist and smooth and somewhat. v- G& d- K: e
oily. No axillary hair was noted. There were no' Y2 a- M* u* [
abnormal skin pigmentations or café-au-lait spots.+ k: R/ Y" o7 x' w* R
Neurologic evaluation showed deep tendon reflex 2+; j/ C: A" r! {3 u" h, i
bilateral and symmetrical. There was no suggestion2 Q2 E, q, r/ T
of papilledema.
& z# W: v @% ?# o jLaboratory Evaluation" O; f% Y5 B* u+ B ?5 K% n
The bone age was consistent with 28 months by" F' r+ n G" n# C6 E, _2 n
using the standard of Greulich and Pyle at a chrono-
0 I6 D+ ~8 t' Elogic age of 16 months (advanced).5 Chromosomal! P9 T$ a# t! o! @8 g2 [
karyotype was 46XY. The thyroid function test" C% \ V' G1 \* x) Z
showed a free T4 of 1.69 ng/dL, and thyroid stimu-
5 E" v: i, [) O# ~) d2 Vlating hormone level was 1.3 µIU/mL (both normal).8 D; [) x, A2 k1 \) }6 j8 `
The concentrations of serum electrolytes, blood
, W$ } a4 w" @# F, r, zurea nitrogen, creatinine, and calcium all were, _6 H( ]! ]5 {8 |7 v
within normal range for his age. The concentration* C- R5 _ C$ X2 l' r
of serum 17-hydroxyprogesterone was 16 ng/dL
M) |' _* l: C. J(normal, 3 to 90 ng/dL), androstenedione was 20: ]5 \6 W; A* Q+ [9 S. p- y, `
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
) L0 \ l# C' H) \5 t7 l0 ~9 d# uterone was 38 ng/dL (normal, 50 to 760 ng/dL),( e9 h% v# C, u7 c0 d; P
desoxycorticosterone was 4.3 ng/dL (normal, 7 to7 N u8 i% ` t$ P# t {( j
49ng/dL), 11-desoxycortisol (specific compound S)$ }' d" w% k( K! G% ~6 Q9 d
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-$ u0 F1 X Q8 D; f9 f4 @
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total1 @( r7 [" ^; W
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),1 [1 U- S% [7 F0 j8 V/ s% e
and β-human chorionic gonadotropin was less than' \# z0 W8 w* s
5 mIU/mL (normal <5 mIU/mL). Serum follicular
7 W* A3 j. g9 ?& S' f8 P7 D, rstimulating hormone and leuteinizing hormone
- T! C2 e: K" S1 @' J* z0 {7 B, xconcentrations were less than 0.05 mIU/mL) g$ S: R! @, ]7 s9 G
(prepubertal).$ c) A' z! J7 {) o6 f' F
The parents were notified about the laboratory
+ _ p c O1 b& Z. I% Xresults and were informed that all of the tests were- Z- |8 P* i" U
normal except the testosterone level was high. The
, T+ q' V7 |$ _) ufollow-up visit was arranged within a few weeks to6 l7 }3 Z! I: Y0 A
obtain testicular and abdominal sonograms; how-/ R( k2 u! M2 o4 ?8 M, j! Q$ E7 o4 f. r
ever, the family did not return for 4 months.
7 A5 q9 @: V% YPhysical examination at this time revealed that the4 M/ c, ]+ h( G9 I* D6 ^
child had grown 2.5 cm in 4 months and had gained h ^ n+ w* c2 |
2 kg of weight. Physical examination remained6 e/ Q! R: k& i' j4 `
unchanged. Surprisingly, the pubic hair almost com-' A( q" U" R: s3 n2 n
pletely disappeared except for a few vellous hairs at- ~( u0 n; A8 P( C2 q' Z1 b6 v0 c& L/ _
the base of the phallus. Testicular volume was still 2/ g& @/ C* \) d$ K9 e
mL, and the size of the penis remained unchanged.
& ^! \* a+ Z3 \% N1 a+ fThe mother also said that the boy was no longer hav-% o( S0 A' l! G5 g1 A
ing frequent erections.
, ?/ [% T* a/ u s/ v8 e8 ?Both parents were again questioned about use of0 V0 _ \3 [2 ?& O
any ointment/creams that they may have applied to$ D( _4 r& M$ e& F. u# K
the child’s skin. This time the father admitted the- P4 ] j. I! p) D
Topical Testosterone Exposure / Bhowmick et al 5412 a$ M* N* ~( S- G f, p
use of testosterone gel twice daily that he was apply-$ O" |' d5 }+ J0 ?/ h& T
ing over his own shoulders, chest, and back area for2 l7 R. _( X- h9 @
a year. The father also revealed he was embarrassed N( P3 |3 N% j: T+ \- v7 c! r% L, p
to disclose that he was using a testosterone gel pre-
2 U% q; j: C) O: ^2 p8 ascribed by his family physician for decreased libido* v. T* y+ @" r3 W6 X
secondary to depression.
2 H9 @/ o- [4 h( o! L7 A4 uThe child slept in the same bed with parents.
3 l- U" |& ]8 G* JThe father would hug the baby and hold him on his
& J- {, U2 r) K5 s4 Xchest for a considerable period of time, causing sig-0 v5 G& O. H, t' \! D' T
nificant bare skin contact between baby and father.
, h" X8 ~# N0 {/ E" B8 J: {The father also admitted that after the phone call,
4 E4 [& y, o" Y) U) L8 M; |! wwhen he learned the testosterone level in the baby% h5 ]) I" _! E4 E
was high, he then read the product information6 n' K' W$ _* _
packet and concluded that it was most likely the rea-
9 ] @: Y7 P$ X4 H7 V$ Ison for the child’s virilization. At that time, they Q8 l' @6 z- i; @# c; x
decided to put the baby in a separate bed, and the" n( O$ q5 \" s2 j4 ~
father was not hugging him with bare skin and had
" q8 i2 S- `' N0 U% k& c9 D4 Ubeen using protective clothing. A repeat testosterone! J, v6 `8 z. i! Q, ^' t
test was ordered, but the family did not go to the/ R2 l f' s3 z, O
laboratory to obtain the test.
! ^! L( V: W2 f1 P8 T5 h g( TDiscussion
# `* z! K7 W( hPrecocious puberty in boys is defined as secondary
" S3 \, h+ k( L5 ]% q7 Lsexual development before 9 years of age.1,4
; I7 E2 J- i. ~. ^5 n8 q& {Precocious puberty is termed as central (true) when
1 b0 [( u& k% q+ A9 dit is caused by the premature activation of hypo-# o0 l u0 W& ^: X& @: X
thalamic pituitary gonadal axis. CPP is more com-& }6 j9 o+ W. W6 }( m& _/ d1 A" c" j
mon in girls than in boys.1,3 Most boys with CPP& O7 D" P j5 Q
may have a central nervous system lesion that is
6 `9 w0 ~' c, N5 ?responsible for the early activation of the hypothal-4 ~/ I8 v- W6 j9 \" r
amic pituitary gonadal axis.1-3 Thus, greater empha-
3 G. L4 g% ~$ R% M- T6 S2 c' Ysis has been given to neuroradiologic imaging in% P; W- u: R7 g: Q2 B1 ^5 }
boys with precocious puberty. In addition to viril-
f( T9 H c5 L9 q! Jization, the clinical hallmark of CPP is the symmet-
+ F; r3 l5 C: R: ^% n9 S3 u* orical testicular growth secondary to stimulation by
* l, g0 h% p9 K: Sgonadotropins.1,3& h8 m& h( h- r" r6 t8 E: P
Gonadotropin-independent peripheral preco-
2 C6 N- r1 Y% \0 k# T' _! kcious puberty in boys also results from inappropriate( y7 ]8 {! k* a' w# M
androgenic stimulation from either endogenous or
/ S) U" _& M3 f: x) `. D/ B0 z# }. }exogenous sources, nonpituitary gonadotropin stim-1 Q* H; I4 d! S5 B S: c
ulation, and rare activating mutations.3 Virilizing
2 a1 ~" Q' z2 _congenital adrenal hyperplasia producing excessive; K: a2 }7 P5 H5 g8 @
adrenal androgens is a common cause of precocious
9 ~% U& r6 g# ?& Kpuberty in boys.3,4
% N) b' b* a) {: w8 lThe most common form of congenital adrenal) L# w' N1 K$ P4 {( U
hyperplasia is the 21-hydroxylase enzyme deficiency.4 D z) m3 C( Q) {6 u
The 11-β hydroxylase deficiency may also result in
5 O p1 r6 U* v, z lexcessive adrenal androgen production, and rarely,$ u% B+ O$ Q9 y) L* C
an adrenal tumor may also cause adrenal androgen- }6 G% E5 j: a+ A6 j. n& x ~5 l
excess.1,3
) J0 N/ T m- W2 x; W6 s) E) bat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
0 x+ s i8 [* I# I9 P542 Clinical Pediatrics / Vol. 46, No. 6, July 2007) S/ W. V; ?8 m7 j* k6 O
A unique entity of male-limited gonadotropin-
0 k4 c" `2 \+ X( p; v0 j. S4 H7 H& E) Hindependent precocious puberty, which is also known
4 }% g2 t5 d" h5 ?/ V" `as testotoxicosis, may cause precocious puberty at a
3 w* I% s; O& N4 A7 `$ jvery young age. The physical findings in these boys
) ~! L" q" o/ P4 ?' t7 Y! F5 Fwith this disorder are full pubertal development,, r- e: B0 f4 o z+ p0 G
including bilateral testicular growth, similar to boys
$ d6 p9 ] i- Lwith CPP. The gonadotropin levels in this disorder
X; G) r4 K) Z) D: r, l$ ~1 Z/ hare suppressed to prepubertal levels and do not show q# y0 a/ @9 z! x% C7 `
pubertal response of gonadotropin after gonadotropin-
) C; \# n- u) x' n& \) Greleasing hormone stimulation. This is a sex-linked
) r1 k% t3 m$ B$ x+ M0 z# R; n3 ?4 bautosomal dominant disorder that affects only( n D) N- R3 v4 b
males; therefore, other male members of the family- o% f1 j, G; y. x, n
may have similar precocious puberty.3% s0 N* o u- p3 }3 \ c/ E
In our patient, physical examination was incon-
; ?3 `0 N2 k6 i5 q. Y3 d7 ]5 u6 ]sistent with true precocious puberty since his testi- L( c9 ]& h" B7 n' g& x
cles were prepubertal in size. However, testotoxicosis
6 s1 f/ M g: K% W( Iwas in the differential diagnosis because his father
x' G9 y; n% ~started puberty somewhat early, and occasionally,1 g; O0 J, P2 Y; Q! ^( ~- Y
testicular enlargement is not that evident in the
# M# r" I1 D6 L/ p* Abeginning of this process.1 In the absence of a neg-
! h1 h9 |' Q/ X% Q0 }7 cative initial history of androgen exposure, our& m8 X6 ~# r4 M! r; m" R( n8 }* I+ A
biggest concern was virilizing adrenal hyperplasia,% E- m; q. K6 P: a" c' ?" ]
either 21-hydroxylase deficiency or 11-β hydroxylase) A4 H/ h( f6 Q/ w8 L
deficiency. Those diagnoses were excluded by find-
# l* f" {' Z b# O$ d& qing the normal level of adrenal steroids.
+ {7 i3 n+ c# P' U$ ?; C$ WThe diagnosis of exogenous androgens was strongly
1 s4 }' W. _! s% H. c3 G* Gsuspected in a follow-up visit after 4 months because
2 w7 ? {2 i! @) `; e5 v. ithe physical examination revealed the complete disap-
. o3 ]5 G& v) U0 y9 R* h8 Q9 Y) bpearance of pubic hair, normal growth velocity, and
" m* K, p' n+ K) U7 H$ ^decreased erections. The father admitted using a testos-) P, E: w, @4 `/ [# @. {$ Q/ N
terone gel, which he concealed at first visit. He was
' \& R& @7 D; x$ ?, `/ Vusing it rather frequently, twice a day. The Physicians’
- V( E2 K/ I+ l2 H" gDesk Reference, or package insert of this product, gel or
% h$ S. u, ^( B. Gcream, cautions about dermal testosterone transfer to
" {- N, O1 {. n$ kunprotected females through direct skin exposure.$ O/ {9 Z6 I7 c4 ~3 }" c; ~8 n
Serum testosterone level was found to be 2 times the% e& Y! K# G% y a" U9 H& _$ l0 f2 B
baseline value in those females who were exposed to/ ]" K! ^1 u; h9 x
even 15 minutes of direct skin contact with their male
9 b& Y. [, O2 [1 ?4 Mpartners.6 However, when a shirt covered the applica-& c# h' B0 L+ B8 \' W# G& L8 U0 G7 f) u
tion site, this testosterone transfer was prevented.2 h% s; Z3 s2 T. M# @
Our patient’s testosterone level was 60 ng/mL,
8 {5 v) t: {' Fwhich was clearly high. Some studies suggest that
O; S4 {( `/ R& u. Tdermal conversion of testosterone to dihydrotestos-
5 m9 g4 s( x, `9 ?; W" |3 Z0 Yterone, which is a more potent metabolite, is more- A1 B0 u2 B5 N+ u9 g4 Y0 i
active in young children exposed to testosterone
8 ~# _: m* k2 ^0 Eexogenously7; however, we did not measure a dihy-
: V; k0 \0 U. odrotestosterone level in our patient. In addition to. B! H+ e/ Q1 C( J
virilization, exposure to exogenous testosterone in+ I/ Q; u0 h5 \& ?2 a7 x0 r& {
children results in an increase in growth velocity and8 n$ l3 O" Y1 B
advanced bone age, as seen in our patient., r) ]8 }1 T. [0 O( e- I
The long-term effect of androgen exposure during
, t/ r7 r4 L( Y( ~) h. oearly childhood on pubertal development and final
( l7 g# p' e( |% f V7 xadult height are not fully known and always remain# h1 r) I; q. N
a concern. Children treated with short-term testos-
+ f L$ j6 K- e9 s+ O' e- `terone injection or topical androgen may exhibit some
6 @" y$ G/ o% H# h a% l, |, Cacceleration of the skeletal maturation; however, after
" E5 j/ m7 {* ~3 ~$ lcessation of treatment, the rate of bone maturation
6 m" ]$ H3 a, f6 _8 U$ g& v' jdecelerates and gradually returns to normal.8,9
* S+ n3 e) ?5 t) U; m1 H/ sThere are conflicting reports and controversy
' c% x9 x0 P9 o% qover the effect of early androgen exposure on adult( x9 d7 a; l' K
penile length.10,11 Some reports suggest subnormal
# h2 M8 ?% Q! {adult penile length, apparently because of downreg-
: B# ?2 ]5 ~& ~+ x! z7 a. wulation of androgen receptor number.10,12 However,8 F/ k1 t1 ]# Z+ |$ A0 z9 k
Sutherland et al13 did not find a correlation between
/ i) G; j. U/ b, l* ]8 k I- Vchildhood testosterone exposure and reduced adult
, |9 @* N/ ?! t7 k: X, X/ {% Tpenile length in clinical studies.
8 C; O# p+ j/ D5 ]Nonetheless, we do not believe our patient is+ w7 Q0 Z$ X% q# ^0 t
going to experience any of the untoward effects from/ J0 S: }9 g; c7 V: n T# g
testosterone exposure as mentioned earlier because# `% p% e( r' S1 o9 L1 Q7 i% t$ N+ L
the exposure was not for a prolonged period of time.$ p9 t1 ~# s. m" s; V; [5 h1 O
Although the bone age was advanced at the time of3 ]9 k) ^! g- d2 d* O% z; j
diagnosis, the child had a normal growth velocity at
& [8 P M3 p0 h2 p; h* v% `+ `the follow-up visit. It is hoped that his final adult
( Q3 d$ Y+ p, pheight will not be affected.6 j9 l- ^4 }4 N- ~) x' I. j& E) a
Although rarely reported, the widespread avail-8 a3 D; b8 Y" j% G$ u' n
ability of androgen products in our society may' w* b# A% {! \# S0 ?7 f
indeed cause more virilization in male or female
! t ~! U6 T9 T5 j( M/ m: nchildren than one would realize. Exposure to andro-
4 c5 p4 h b- v9 d+ `gen products must be considered and specific ques-
1 [ x* ~% V) O) ?0 ~4 jtioning about the use of a testosterone product or
+ P0 N" _. i: J; h- Xgel should be asked of the family members during* [5 y2 \% y2 L* d; \$ G9 ?+ T
the evaluation of any children who present with vir-! J5 n1 W3 u1 U/ u! |6 I. v
ilization or peripheral precocious puberty. The diag-
( B7 Z: Q7 t Bnosis can be established by just a few tests and by
/ T2 c, m+ M2 @3 Q U- J4 s& @appropriate history. The inability to obtain such a
2 \) u1 k) G7 _2 X" D) Yhistory, or failure to ask the specific questions, may) q( m" x9 _5 {& P1 b
result in extensive, unnecessary, and expensive) B2 p& t: I( _* e. D J
investigation. The primary care physician should be
( W0 @6 o# t4 t$ {7 E0 Waware of this fact, because most of these children
/ M2 [) f$ [, I+ ~may initially present in their practice. The Physicians’/ x( b: @. ]1 @0 Z( j
Desk Reference and package insert should also put a' Z+ [7 z! {; Q6 p. ^9 a N/ |
warning about the virilizing effect on a male or
' [8 k4 T$ `* g, N6 v- ]( Ufemale child who might come in contact with some-- t; H4 X4 O4 {
one using any of these products.( o6 ]; I8 ^2 E' Q. ~) V
References5 t8 d" e9 u6 e: @/ }
1. Styne DM. The testes: disorder of sexual differentiation
; j- m2 M; z' d9 l4 O& Uand puberty in the male. In: Sperling MA, ed. Pediatric
" g3 G$ K$ t% P" q) |2 A+ A$ BEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
' j% e6 X& z7 p; z' }/ Y2002: 565-628.: Q5 K5 b1 s/ ?( r* o( }6 \
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious) W0 Z. q5 `0 s0 J0 Z; k0 b
puberty in children with tumours of the suprasellar pineal- b7 o" ?8 e N' b
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
$ D0 b" L3 s: n3 C. ATopical Testosterone Exposure / Bhowmick et al 5434 L6 d5 h4 r! H% Z0 f
areas: organic central precocious puberty. Acta Paediatr.
. c2 h+ n) x$ C5 ^1 n, C2001;90:751-756.
: v7 O& a" s0 z5 @) N3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.) s8 R; U, ?2 |( H; H' C' D% S
Pediatric Endocrinology. 4th ed. New York, NY: Marcel/ A* ?- k+ m4 V I2 r# _: j
Dekker Inc; 2003:211-238.
& J2 _7 A. R( e) z4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
7 ^" j e) l& y2 h$ I, k' F# @1 X. }* sdevelopment in a two-year-old boy induced by topical
( P7 Z) N+ P7 \/ |8 q1 t, [, kexposure to testosterone. Pediatrics. 1999;104:e23.( h7 n4 ?5 y" _# G) y7 i2 m& R
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
8 k& K: U' |1 |- SSkeletal Development of the Hand and Wrist. 2nd ed.
( }# I' s; f7 Z g6 R3 N8 \) p4 nStanford, CA: Stanford University Press; 1959.# O: r' o; w6 E' F, n- a% J7 _. H
6. Physicians’ Desk Reference. Androgel 1% testosterone,8 _: z* H+ e8 Z
Unimed Pharmaceutical Inc. Montvale, NJ: Medical
: o# m* G$ k W" @% N% ]9 ^Economics Company, Inc; 2004:3239-3241.
- x1 [/ k( @( k9 \7. Klugo RC, Cerny JC. Response of micropenis to topical
' a3 e9 W8 |: d% {" ^testosterone and gonadotropin. J Urol. 1978;119:7 M, ^* a- ~6 W9 G% M
667-668.& Y; n ~- p( K& U H8 ]
8. Guthrie RD, Smith DW, Graham CB. Testosterone% J# x) z& Z$ R, t- d- u* p
treatment for micropenis during early childhood. J Pediatr.
0 L* V9 k. L1 F0 ~0 Q( r8 R1973;83:247-252.
* U& P9 t0 ?4 \6 r# J4 B9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone! I& L% F2 H" o
therapy for penile growth. Urol. 1975;6:708-710.
& O y1 `& l* `10. Husmann DA, Cain MP. Microphallus: eventual phallic
4 f2 T6 X( j% I. s$ x4 Y2 ssize is dependent on the timing of androgen administra-
; ~8 J1 ]8 F" q7 I% S! mtion. J Urol. 1994;152:734-739./ K, N- J8 Z- n
11. McMahon DR, Kramer SA, Husmann DA. Micropenis:
7 x# H/ w6 N/ F# Sdoes early treatment with testosterone do more harm9 f/ c( `0 u7 K; ] }' q0 a0 W" H
than good? J Urol. 1995;154:825-829.5 R5 x. K- z" z" r% T& |
12. Takane KK, George FW, Wilson JD. Androgen receptor/ T3 k5 e* c% v& P
of rat penis is down-regulated by androgen. Am J Physiol.
2 e+ Y6 f5 d, L U4 W1990;258:E46-E50." \' r& [- P, @$ X8 h+ \
13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect
% C; C4 q) l7 u \ ], M ~of prepubertal androgen exposure on adult penile
, G0 G( h) ]$ `* i7 t4 L X4 K% _) wlength. J Urol. 1996;156:783-787. |
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