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is a significant concern for physicians. Central
) g# D4 p7 n# [1 \5 Pprecocious puberty (CPP), which is mediated
- B! R7 N) b$ z% i% C, _through the hypothalamic pituitary gonadal axis, has
0 m0 V) x+ _9 d4 ?2 T- Qa higher incidence of organic central nervous system9 [& _/ P. ?; e5 n
lesions in boys.1,2 Virilization in boys, as manifested
6 r R* c; K4 i4 qby enlargement of the penis, development of pubic3 k/ U6 Z; h! n: b0 ~9 h
hair, and facial acne without enlargement of testi-
& J8 F7 n& e3 o' G% c" ?, x" ^cles, suggests peripheral or pseudopuberty.1-3 We
, Z. L1 L- y. q$ w5 Ereport a 16-month-old boy who presented with the
9 n3 K9 C% s) E. q0 k K% Denlargement of the phallus and pubic hair develop-
5 A4 e4 O" ]6 `& B# Gment without testicular enlargement, which was due Y) N7 y; F) A- O* H; w& a# l" _7 G
to the unintentional exposure to androgen gel used by' K5 r0 ?5 z; z A. Q/ S
the father. The family initially concealed this infor-
2 X5 i2 F6 d% K6 t/ h: kmation, resulting in an extensive work-up for this
# ~9 r/ E: s8 }2 c. N! lchild. Given the widespread and easy availability of8 g9 I% Q( G+ Z: Y
testosterone gel and cream, we believe this is proba-
$ r% y' q6 K* Q0 Fbly more common than the rare case report in the( R+ n- l6 e5 ?$ d
literature.4
* q" K/ o4 a8 d: ^: dPatient Report' a1 I$ N! ~4 x1 z2 V; R8 a
A 16-month-old white child was referred to the6 n% {+ g% ^ h! ?7 j' F
endocrine clinic by his pediatrician with the concern; b7 {- C. K" P) h+ V! _3 Y$ w9 Q4 t
of early sexual development. His mother noticed
) R2 E. w2 b3 g9 g6 glight colored pubic hair development when he was: s! P$ X1 N; J6 }1 h
From the 1Division of Pediatric Endocrinology, 2University of+ x: K8 U) ^. e/ [4 e1 O: V- q
South Alabama Medical Center, Mobile, Alabama.6 z/ z( s. t8 x) L4 K
Address correspondence to: Samar K. Bhowmick, MD, FACE," D; k( ?. \& { M2 K, M
Professor of Pediatrics, University of South Alabama, College of
' p/ ^+ m4 G! o" c- I( FMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
& s- k* ] j/ s: ^5 fe-mail: [email protected].( A0 m8 D1 G/ S% x
about 6 to 7 months old, which progressively became& Q' c0 K: ~$ v0 b: m' W2 T& P- t2 C7 M
darker. She was also concerned about the enlarge-
( R8 Z: [7 n- b2 w* kment of his penis and frequent erections. The child) B4 r/ ?/ `! o+ a q5 t
was the product of a full-term normal delivery, with; u1 J) Z3 I; u* |+ |
a birth weight of 7 lb 14 oz, and birth length of
, h1 \" V* q, e20 inches. He was breast-fed throughout the first year3 o3 z! }% \# w3 u7 L4 {6 E
of life and was still receiving breast milk along with
( K# Y$ H8 {, K' x4 Q; e: Tsolid food. He had no hospitalizations or surgery,) r; Y! J* b8 H
and his psychosocial and psychomotor development
0 U% ^) Q2 F) C$ Iwas age appropriate.
+ `$ ^+ _& \. }- }7 pThe family history was remarkable for the father,2 b2 _! X4 k% d" P1 I! I$ ]7 K( O
who was diagnosed with hypothyroidism at age 16,
& s1 B- k2 A6 `9 u; L( gwhich was treated with thyroxine. The father’s w! z. H' F/ _; e; t, l7 T3 Y
height was 6 feet, and he went through a somewhat& f% d9 y k5 c! S
early puberty and had stopped growing by age 14.5 ~% d( z' y# N; I1 q2 A( _/ D
The father denied taking any other medication. The
. s/ ^( u/ u0 s# Q% E. D) N. achild’s mother was in good health. Her menarche# t: k N1 Q5 ~( e: [) ^+ A
was at 11 years of age, and her height was at 5 feet# [) V( [8 N* ~6 j1 a
5 inches. There was no other family history of pre-
5 V! o% a2 H' N& _cocious sexual development in the first-degree rela-
( d8 a! Z. d, o& v; i# Btives. There were no siblings.
& ?. r" p6 T, q" t: k; j7 kPhysical Examination
& W2 X3 M/ Y' A: j' T9 |4 S# BThe physical examination revealed a very active,* k# x e+ o% M; }/ ~: `
playful, and healthy boy. The vital signs documented, ^! }2 h) j" K) _* ^
a blood pressure of 85/50 mm Hg, his length was
; M' Y) `" W* O# ]) t) `$ M4 q: c90 cm (>97th percentile), and his weight was 14.4 kg7 @) r4 v" P% l5 ]+ [
(also >97th percentile). The observed yearly growth
$ X, J) T/ {5 W! E3 O8 e" w. uvelocity was 30 cm (12 inches). The examination of
9 q, g8 ^& X: C+ s. othe neck revealed no thyroid enlargement.$ Y0 @0 N) T9 T$ R% X
The genitourinary examination was remarkable for' ^' @, l( W4 `# I6 `* W
enlargement of the penis, with a stretched length of
; x% n8 T* y7 ~8 cm and a width of 2 cm. The glans penis was very well
3 K: ?5 B' v6 q. T. x+ m. |developed. The pubic hair was Tanner II, mostly around
" q( N1 U- Q8 R) c# {, Y! O! F540
. i# H B% V+ z: @& qat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
7 q/ r0 o6 x# z! K" _the base of the phallus and was dark and curled. The
! {3 d2 `: L& xtesticular volume was prepubertal at 2 mL each.
9 ?) D8 o, z E- \0 u" a3 k4 I5 EThe skin was moist and smooth and somewhat7 M' O# J3 s# Y
oily. No axillary hair was noted. There were no
q; h+ d8 b; h; n1 M+ B8 zabnormal skin pigmentations or café-au-lait spots.+ H# q% @ x6 ^6 ?. U
Neurologic evaluation showed deep tendon reflex 2+6 p( I! [. _6 G, d6 q, }# K' K1 \
bilateral and symmetrical. There was no suggestion
. g) P0 k( U9 A, S, F! s( _of papilledema." } X4 B4 R3 W
Laboratory Evaluation
) q, t8 F+ ]/ ?8 \* yThe bone age was consistent with 28 months by1 R6 H* J6 c! Z7 o' b& B
using the standard of Greulich and Pyle at a chrono-
+ O0 ]( l9 k) l0 klogic age of 16 months (advanced).5 Chromosomal" L7 F" f; k9 r# P! v# v* }
karyotype was 46XY. The thyroid function test
1 e% g0 J. ^3 }1 I; |1 g& M- Cshowed a free T4 of 1.69 ng/dL, and thyroid stimu-
/ U. [5 p) L8 ]! zlating hormone level was 1.3 µIU/mL (both normal).
% @* ]' ?, x0 \) h' J" y6 }The concentrations of serum electrolytes, blood
0 q- T; l% a; ^3 g" Furea nitrogen, creatinine, and calcium all were( G$ d) x" [. D1 B2 \# Z- {2 F
within normal range for his age. The concentration
# ^' P6 @' h4 Y4 { Iof serum 17-hydroxyprogesterone was 16 ng/dL6 M: K& `: B$ j8 @# k# e
(normal, 3 to 90 ng/dL), androstenedione was 20
+ K8 `* Z0 T7 R3 J G- J Ong/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
/ D3 H! l3 h) N" t0 m2 u; oterone was 38 ng/dL (normal, 50 to 760 ng/dL),- W# l" P6 @6 ?
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
5 r) M* K3 S' ]. z3 m$ x' L& N49ng/dL), 11-desoxycortisol (specific compound S)
& U+ A$ _' Q ]# b( Cwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-3 P# l. j5 e# |# w
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
2 g$ i2 b( G/ h/ ]% ]7 }testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
6 p& y* T! Y$ k) | r( iand β-human chorionic gonadotropin was less than
" p: n& H: _" \! Q3 R$ C0 p/ @5 mIU/mL (normal <5 mIU/mL). Serum follicular
8 @% y/ T3 T1 V# X: d6 R9 P( mstimulating hormone and leuteinizing hormone
+ X& C7 O# X1 tconcentrations were less than 0.05 mIU/mL
, s6 T2 U2 {- F* b(prepubertal).0 P' V4 V" ?# {$ M3 n. t) }% ]/ a
The parents were notified about the laboratory0 r) Y4 F4 q% v1 \: O `
results and were informed that all of the tests were" e- o* S/ }' L/ n& Q
normal except the testosterone level was high. The9 T2 V$ D! ?/ W" }0 c! \2 E k8 m
follow-up visit was arranged within a few weeks to. b" F2 j. R2 \0 c3 A5 | Q* E `
obtain testicular and abdominal sonograms; how-7 \8 N) U3 q. ?+ d# Z; D+ w
ever, the family did not return for 4 months.& ]3 E7 ] c- ~+ R* e0 w
Physical examination at this time revealed that the. j; ?8 v7 D# Z9 h S0 k9 ~
child had grown 2.5 cm in 4 months and had gained5 z* R# w+ ~! k+ `5 A8 k
2 kg of weight. Physical examination remained M2 j. l/ F8 u% i
unchanged. Surprisingly, the pubic hair almost com-
) w& u; I$ Q! B- \2 i9 |pletely disappeared except for a few vellous hairs at [& @0 e( l8 |
the base of the phallus. Testicular volume was still 24 o: }, U/ R% O4 R8 r3 ~! c4 Q/ G
mL, and the size of the penis remained unchanged.2 d7 s- r1 y, E* i; \7 U
The mother also said that the boy was no longer hav-
" S- B1 b4 Z; ~7 r! x- [ing frequent erections.& |$ n& s9 e+ G
Both parents were again questioned about use of
7 `% P# ~6 Q4 t* x* N4 Jany ointment/creams that they may have applied to
# ~- b( K3 O1 p) s+ ]the child’s skin. This time the father admitted the
* g5 G' N3 W# t+ mTopical Testosterone Exposure / Bhowmick et al 541
% P$ N& I7 t3 ?1 d7 r E+ Z" ruse of testosterone gel twice daily that he was apply-
7 j+ I8 r, [4 D8 E6 @5 [ing over his own shoulders, chest, and back area for
& Y# \/ R, v# z( q6 Pa year. The father also revealed he was embarrassed8 [ ?% ~; t' Z! d4 ]6 A, Q
to disclose that he was using a testosterone gel pre-
+ O- y4 f0 [ ?. M, @0 Ascribed by his family physician for decreased libido
0 C+ m; x" |" n9 u# ^secondary to depression.! y& z. b/ ~! w
The child slept in the same bed with parents.
% ~/ F0 K, a! {0 ^' r/ t( cThe father would hug the baby and hold him on his
. G' Y' D) P- z5 U& }9 D- Q3 \1 cchest for a considerable period of time, causing sig-" ~/ Z# w6 F4 s9 _6 }
nificant bare skin contact between baby and father.
8 Z) `* |4 z5 p# XThe father also admitted that after the phone call,
8 B# d5 r2 b" y( b9 U Swhen he learned the testosterone level in the baby
, v' P; |/ U( N' v' ewas high, he then read the product information
. M8 m1 z' H; g p0 y" v3 Tpacket and concluded that it was most likely the rea-! j8 K( m! B) s/ a2 H5 y
son for the child’s virilization. At that time, they6 k, s% p# z3 B! q* w' K6 b. ?' w$ ?
decided to put the baby in a separate bed, and the2 N) Y$ d7 ^) F+ e
father was not hugging him with bare skin and had: R* F4 D3 @2 d
been using protective clothing. A repeat testosterone7 B1 `9 x' U( h, m' G. z5 f
test was ordered, but the family did not go to the3 \! p q* ?% x" A. u1 ~6 E: m
laboratory to obtain the test.
0 m% k# k6 z( J9 ^, Y% z. Q0 SDiscussion
& A3 g6 [' a* F: APrecocious puberty in boys is defined as secondary
& P$ Q4 `% c' O, p' J3 p- n ^sexual development before 9 years of age.1,4. \/ l* j! M, U- y3 B& R/ m
Precocious puberty is termed as central (true) when
! W/ }' {! i3 I; ]) z+ r, Kit is caused by the premature activation of hypo-
6 y2 t; J2 B# sthalamic pituitary gonadal axis. CPP is more com-: y# u' Z8 k$ P2 w9 R v
mon in girls than in boys.1,3 Most boys with CPP% ]/ T! L# v: J+ N$ \! E6 y
may have a central nervous system lesion that is5 ?4 H; W# r& M6 ]1 V1 U' |! w
responsible for the early activation of the hypothal-; K9 F0 ?. }2 D9 V: s& W
amic pituitary gonadal axis.1-3 Thus, greater empha-
2 ?( a. l( [" p$ K6 J( }) n; d+ v; fsis has been given to neuroradiologic imaging in
& r5 M! J$ e+ O1 v& bboys with precocious puberty. In addition to viril-
- R& h2 T: e$ hization, the clinical hallmark of CPP is the symmet-
: `& Z6 i; k. u5 \/ W. `rical testicular growth secondary to stimulation by6 N# J2 b, ~( T4 m* W
gonadotropins.1,38 o, l/ x# G9 @' F! m, s
Gonadotropin-independent peripheral preco-
% C# W+ s! U3 w+ P" T- z/ I- bcious puberty in boys also results from inappropriate
# r0 s: J/ q' v, E: A# S$ a5 @; Eandrogenic stimulation from either endogenous or
7 f3 K. Y$ s0 Zexogenous sources, nonpituitary gonadotropin stim-. X. ?* B- G2 s' i3 Q: ]
ulation, and rare activating mutations.3 Virilizing$ {3 b' d" _& V% q8 q, O
congenital adrenal hyperplasia producing excessive) k1 g6 \; {+ W' f4 D4 i a( s3 x
adrenal androgens is a common cause of precocious
3 L$ [8 E9 t# ]0 W' wpuberty in boys.3,4
! ~, r1 W1 @" ?; K: g+ m# P! z& |The most common form of congenital adrenal9 | q9 M" k# M% g% E5 w! d
hyperplasia is the 21-hydroxylase enzyme deficiency.
) n1 \3 U0 }- k- e0 ^5 E, X0 T' xThe 11-β hydroxylase deficiency may also result in, X8 s c5 j4 A
excessive adrenal androgen production, and rarely,
% b# f) z) G0 @an adrenal tumor may also cause adrenal androgen6 q. K# N3 x3 m1 M. I
excess.1,3
: [6 V1 Y5 ]4 _7 Nat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from, v, J6 N. L* W' T3 A0 |
542 Clinical Pediatrics / Vol. 46, No. 6, July 20074 M8 D$ s0 M9 s& ?
A unique entity of male-limited gonadotropin-
# J, X' I) y+ [& d! `' r# L8 mindependent precocious puberty, which is also known# `' c5 l( B5 }( H& H
as testotoxicosis, may cause precocious puberty at a% f, M) R% |' {/ T9 {& v! M
very young age. The physical findings in these boys) |( T; R6 z. F. v! Q! l9 x8 l
with this disorder are full pubertal development,5 U- ~& E# S. y: D
including bilateral testicular growth, similar to boys
9 K- g" r5 N- Iwith CPP. The gonadotropin levels in this disorder
T8 k; A( D7 ]% G! g" D0 lare suppressed to prepubertal levels and do not show
( i7 d! m4 G/ d+ J0 _pubertal response of gonadotropin after gonadotropin-2 e$ F. }, g/ x$ y' G+ k
releasing hormone stimulation. This is a sex-linked
$ B! y; Y- M2 Sautosomal dominant disorder that affects only; u4 y- K. U" n9 v& p
males; therefore, other male members of the family
. V y8 ]1 |& imay have similar precocious puberty.3
( `2 o1 D# H kIn our patient, physical examination was incon-
3 M: z3 }) a" b. p& x& L" d& Psistent with true precocious puberty since his testi-
+ A/ D" t' S. @1 @8 z3 _1 Dcles were prepubertal in size. However, testotoxicosis
5 y8 u# K& i( t$ @was in the differential diagnosis because his father, y# w9 ?; s) @; a3 f
started puberty somewhat early, and occasionally,
- G" O! z; a2 @" Z, Xtesticular enlargement is not that evident in the2 @( k% Z! N, s- {3 U. [/ c3 b
beginning of this process.1 In the absence of a neg-; ^; J0 p/ C" F4 ^! V' K( F- X
ative initial history of androgen exposure, our0 w, ~! |/ A! i+ ?
biggest concern was virilizing adrenal hyperplasia,
* ?1 [3 j% ~1 N: k6 z% G. Jeither 21-hydroxylase deficiency or 11-β hydroxylase
' |' H) n7 c: L x5 f7 f) J8 q1 ^deficiency. Those diagnoses were excluded by find-6 t" s* @+ @0 R% k7 s
ing the normal level of adrenal steroids.
Z# X* Z8 F5 Z5 L6 y! KThe diagnosis of exogenous androgens was strongly! j) G/ x( x, w( B6 w8 }) L+ E3 H! x0 z
suspected in a follow-up visit after 4 months because
3 d$ o2 A- [* Gthe physical examination revealed the complete disap-
' ?1 U$ o; u4 \2 [/ l, ypearance of pubic hair, normal growth velocity, and
. i& h# e3 E% T# B7 Hdecreased erections. The father admitted using a testos-% M; G) w8 M, V7 |' ^
terone gel, which he concealed at first visit. He was' a7 \8 N6 R* m. V/ Z0 b
using it rather frequently, twice a day. The Physicians’
) V0 A( S" p& B& M. r: Y; `7 eDesk Reference, or package insert of this product, gel or, O& _6 r s/ B% w2 j- }
cream, cautions about dermal testosterone transfer to
- j. Q1 z" c% y' Uunprotected females through direct skin exposure.
* S5 Q' l. A0 E @, iSerum testosterone level was found to be 2 times the2 q/ R+ _1 K8 ~6 `% v
baseline value in those females who were exposed to- g$ t. E' E( v) i( q
even 15 minutes of direct skin contact with their male
, V; w# R$ f! Gpartners.6 However, when a shirt covered the applica-" U4 x9 J5 ~( j+ f
tion site, this testosterone transfer was prevented.6 i# b# n2 N2 m1 \6 z
Our patient’s testosterone level was 60 ng/mL,
M$ e* w) ]8 X8 X& C2 O" \ z4 uwhich was clearly high. Some studies suggest that) U) Y0 K% W3 m: U; Y
dermal conversion of testosterone to dihydrotestos-
) Q, |$ |0 b: O0 J+ Vterone, which is a more potent metabolite, is more
7 k M! _" F |8 k3 v) z3 nactive in young children exposed to testosterone
; ?/ [9 X1 n4 nexogenously7; however, we did not measure a dihy-0 C2 o" a: S# {% p1 d0 z
drotestosterone level in our patient. In addition to, R5 t* v: S" M* s; B! N" U# K
virilization, exposure to exogenous testosterone in' Z9 R; d5 Z/ f3 A2 q4 ~+ x
children results in an increase in growth velocity and% }" i' B* d, f2 i: x/ s
advanced bone age, as seen in our patient.8 u# Q+ S% T6 Y9 _
The long-term effect of androgen exposure during- y- `+ D' m4 o7 B3 ]# V+ N
early childhood on pubertal development and final
/ \% N6 u* X+ Zadult height are not fully known and always remain
; u, O4 r/ _, b% La concern. Children treated with short-term testos-
) g4 V, M2 p& [6 {: Nterone injection or topical androgen may exhibit some
) s" Q2 z8 Y8 w" ]/ {acceleration of the skeletal maturation; however, after
9 Q5 n* s! G$ U: O6 e1 [cessation of treatment, the rate of bone maturation
0 u1 O8 z* W, M+ O ^decelerates and gradually returns to normal.8,92 V8 l) `% z5 z& l& x
There are conflicting reports and controversy
; l& }* ?* O1 i' xover the effect of early androgen exposure on adult
( n: G* A% @& F4 }' [. fpenile length.10,11 Some reports suggest subnormal
: W/ K+ Q! N7 w+ N0 _0 ]% xadult penile length, apparently because of downreg-2 k2 a- _. u5 |* [ E
ulation of androgen receptor number.10,12 However,
4 M5 s8 l) { O4 ~9 y: aSutherland et al13 did not find a correlation between! {9 J$ W" E9 Q K
childhood testosterone exposure and reduced adult
+ R, h2 N8 a, Q* h, f+ \* o9 ^9 ~, Wpenile length in clinical studies.
' ~1 p5 R4 Y `6 J4 {# M! ^0 f1 F9 kNonetheless, we do not believe our patient is
4 j, ]7 r; K$ v) Vgoing to experience any of the untoward effects from8 ]; _ t9 e3 ?! F8 z
testosterone exposure as mentioned earlier because
& t: {# t# \0 g$ W: r( j8 Q% {: y: Ithe exposure was not for a prolonged period of time.
8 d, A+ i6 q0 t* s( [5 |2 WAlthough the bone age was advanced at the time of
, f1 ]" G8 ]5 adiagnosis, the child had a normal growth velocity at8 Z2 @, g( S" O' f7 f6 f) [& Y
the follow-up visit. It is hoped that his final adult- J! v# Q6 E: H0 k0 F5 X1 C' s$ q
height will not be affected.! ^. M5 X8 U" E# L/ U
Although rarely reported, the widespread avail-
) B9 X1 u/ \: T: b, zability of androgen products in our society may
9 F% j6 E0 k/ Q7 W P4 [& v7 `indeed cause more virilization in male or female
6 X/ d1 [/ U/ ~7 tchildren than one would realize. Exposure to andro-/ k( p3 s. W" e, J/ l
gen products must be considered and specific ques-: [; Z' K9 J; g, Z
tioning about the use of a testosterone product or
! X- X+ W5 S0 C+ Z1 U5 Fgel should be asked of the family members during. Z q! s6 i9 ]+ `
the evaluation of any children who present with vir-
! ~- \+ C6 a* O7 lilization or peripheral precocious puberty. The diag-5 H2 c/ ^: i3 w' W, o
nosis can be established by just a few tests and by4 Z4 h/ B8 V& R9 o* C/ P
appropriate history. The inability to obtain such a5 Y- Z; q9 F1 w4 J3 b+ g! q
history, or failure to ask the specific questions, may
7 S" \9 Q3 y2 a% S% @; gresult in extensive, unnecessary, and expensive
$ G L7 Z) V# p6 @" Y$ b# s6 Iinvestigation. The primary care physician should be
( L4 Z: l; J; x9 o6 f5 m9 Zaware of this fact, because most of these children
m! y& U; u9 N% pmay initially present in their practice. The Physicians’
/ l( j* y3 w* E1 zDesk Reference and package insert should also put a
/ P# e$ {5 m# Bwarning about the virilizing effect on a male or
1 G6 _( H) a( a! U, x6 T6 I5 ]' Mfemale child who might come in contact with some-
. X, G* M8 s( \, X$ h2 K0 D/ N. lone using any of these products.6 ]8 w$ W5 O2 Y9 ^' t: ?, r
References
5 ]4 ^5 P7 X( \* T. J4 e) `- ]1. Styne DM. The testes: disorder of sexual differentiation. P$ O( @" _) ^, s% O
and puberty in the male. In: Sperling MA, ed. Pediatric2 y: h X5 n) z
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;& [+ }; U5 v+ Z' [! M
2002: 565-628.
* m5 Z; \7 C7 J! P3 O8 H) Y2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
6 c! I- B" G5 X1 W8 U/ fpuberty in children with tumours of the suprasellar pineal) m s) m2 G2 E& s. `8 l
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from6 A( r' f- K0 g) I& u; N4 m7 p
Topical Testosterone Exposure / Bhowmick et al 5438 O; I: a- a) s ~" v- x) [% R
areas: organic central precocious puberty. Acta Paediatr." D( Z. P& _- A/ }/ g* @
2001;90:751-756./ D6 m3 X/ @/ J, m. v
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.4 o: _5 S% z) I# @
Pediatric Endocrinology. 4th ed. New York, NY: Marcel
) ~/ q( {7 M( S0 G% E) YDekker Inc; 2003:211-238.
2 p# t d; B+ V' j5 o6 e; y' B( s4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual2 T& L) E5 {* B
development in a two-year-old boy induced by topical, H- R# W" H" Y2 i. o0 X5 ], j& z
exposure to testosterone. Pediatrics. 1999;104:e23.
; i$ o4 H% f" p2 _: g6 O5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
' @% ^2 V: }8 K$ D6 N- ~Skeletal Development of the Hand and Wrist. 2nd ed.
6 u/ `, [$ F$ K; \, {, lStanford, CA: Stanford University Press; 1959.4 }& d F7 ~! F" k
6. Physicians’ Desk Reference. Androgel 1% testosterone,
- m/ r. t5 d' JUnimed Pharmaceutical Inc. Montvale, NJ: Medical6 g" Z) L" m+ ^' I: o& x1 V! L- A! J
Economics Company, Inc; 2004:3239-3241., S. ^: F( j; C0 K: B7 R; L. f
7. Klugo RC, Cerny JC. Response of micropenis to topical- v1 u+ r0 {2 U6 w
testosterone and gonadotropin. J Urol. 1978;119:
) u5 \: F# a" Q$ B& e1 M w# B667-668.2 G5 h' C# z' K1 A3 r. Y/ N' R
8. Guthrie RD, Smith DW, Graham CB. Testosterone* c; Z7 `- ^2 A8 a/ d/ O- U% U
treatment for micropenis during early childhood. J Pediatr.
3 G- G0 z9 k% l( M1 k$ _" ?1973;83:247-252.
\8 F7 u( O% A( _" F4 O9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone
' X' E+ y: l( o8 P$ X' Gtherapy for penile growth. Urol. 1975;6:708-710.
$ w4 k) A; e# @* H4 n10. Husmann DA, Cain MP. Microphallus: eventual phallic
( }6 ] Q5 q9 s: Z3 I _" ysize is dependent on the timing of androgen administra-
' m6 M+ a2 m( ^+ r9 mtion. J Urol. 1994;152:734-739.8 I: F5 b7 b. O. g: f
11. McMahon DR, Kramer SA, Husmann DA. Micropenis:
7 G7 q: X! y/ D6 ^6 t( Z; L1 Gdoes early treatment with testosterone do more harm
, L* V! P7 w) Q6 Z2 fthan good? J Urol. 1995;154:825-829.2 n8 U2 } j% n& t; g6 O8 X
12. Takane KK, George FW, Wilson JD. Androgen receptor* o$ h; z6 {3 g: e
of rat penis is down-regulated by androgen. Am J Physiol.
2 r4 {7 }* ^; S9 \4 T% H( V1990;258:E46-E50.
4 h% ~2 {1 a: L5 \2 f13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect! H5 x9 j: c; e3 U) H
of prepubertal androgen exposure on adult penile
! l0 r# u0 Y2 \- o# Tlength. J Urol. 1996;156:783-787. |
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