- 註冊時間
- 2023-5-6
- 精華
- 在線時間
- 小時
- 米币
-
- 最後登錄
- 1970-1-1
|
發表於 2025-1-4 03:38:58
|
顯示全部樓層
is a significant concern for physicians. Central& h$ w. s1 o0 d! n
precocious puberty (CPP), which is mediated6 p* s9 u7 P( u: u
through the hypothalamic pituitary gonadal axis, has$ J2 e7 J4 d8 ]; U, T
a higher incidence of organic central nervous system
+ ]5 D; y1 M9 m L' U( G, Nlesions in boys.1,2 Virilization in boys, as manifested
A/ K5 |% b+ eby enlargement of the penis, development of pubic0 {7 d/ p1 `. J" s
hair, and facial acne without enlargement of testi-8 b0 q% Q- X! a: P9 J
cles, suggests peripheral or pseudopuberty.1-3 We
$ V2 U: E- |- y. yreport a 16-month-old boy who presented with the
6 J/ J9 o+ K( O: {% menlargement of the phallus and pubic hair develop-
( U! T/ ?6 p& q8 v- G% ]3 w1 _ment without testicular enlargement, which was due- W. [# k' T- V% {4 `+ K0 p, p
to the unintentional exposure to androgen gel used by, b9 D6 m& O2 U
the father. The family initially concealed this infor-
4 a) h, |3 Z- U7 d7 H1 {. Ymation, resulting in an extensive work-up for this6 d, z$ E' ~$ S3 L4 G8 T* u
child. Given the widespread and easy availability of
+ U( K+ N3 I' Y, y( W2 D; F( mtestosterone gel and cream, we believe this is proba-2 \! w' |/ D$ M+ G; [
bly more common than the rare case report in the1 }, V* i `9 e% Q3 l( K
literature.4
+ O* n. ^1 I+ qPatient Report
3 T8 P% R( g& O% g# G5 ]A 16-month-old white child was referred to the, e2 }( ?. k3 V8 |
endocrine clinic by his pediatrician with the concern, N0 t: R4 x9 j/ Z G2 H
of early sexual development. His mother noticed
# O" L, H. ~7 _: M( a" B9 blight colored pubic hair development when he was
- R4 M& E# M9 C8 m+ |From the 1Division of Pediatric Endocrinology, 2University of' d, i* {9 x( L# g1 s
South Alabama Medical Center, Mobile, Alabama.
% v; m5 h( s1 o4 ~ R& o* eAddress correspondence to: Samar K. Bhowmick, MD, FACE,% `5 O5 R, A, u; g6 c* i Y
Professor of Pediatrics, University of South Alabama, College of/ y) c# H, Q& h9 p, m9 ?
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
( q% ^7 \) r2 ?# H, e9 G* z3 Ue-mail: [email protected].
5 U6 {& d7 n* r+ m2 }% d1 Eabout 6 to 7 months old, which progressively became
N1 [0 f4 ` xdarker. She was also concerned about the enlarge-
3 U' P& O, s i6 r/ t, W) X% jment of his penis and frequent erections. The child
5 R# H2 ~! a' [ r" uwas the product of a full-term normal delivery, with0 i) I% K' F0 Z4 Y& B. L
a birth weight of 7 lb 14 oz, and birth length of
4 M" I8 x; ^" D$ S! u20 inches. He was breast-fed throughout the first year) S+ @% q% k; j w' `+ n _
of life and was still receiving breast milk along with
, \# W4 A: d! qsolid food. He had no hospitalizations or surgery,: W3 j( S" p8 q' p1 ^4 O
and his psychosocial and psychomotor development
3 ?0 `. ~! x( l2 Q" ?1 Kwas age appropriate.
8 B# H' I. f0 w: A* ~+ Y( j+ iThe family history was remarkable for the father,6 n- ]4 t3 o9 I6 J1 u) g/ R; E. l
who was diagnosed with hypothyroidism at age 16,
, P+ x, r" A9 \7 [2 V2 nwhich was treated with thyroxine. The father’s1 J0 a4 x& {; |! c2 q# ^; @% |6 H
height was 6 feet, and he went through a somewhat8 A& v% R- s2 L2 j$ A5 {/ t6 `
early puberty and had stopped growing by age 14.0 {3 \/ L9 m4 k. }0 A3 {" \8 t
The father denied taking any other medication. The% @ n4 \4 {& j3 v j: B7 U% G# L2 I
child’s mother was in good health. Her menarche% i( g: ]3 T, L1 h( C' k8 y8 L% q
was at 11 years of age, and her height was at 5 feet
: O: J5 F# w+ _( ^% ~5 inches. There was no other family history of pre-1 v& K r9 {6 {3 {8 U4 R( [
cocious sexual development in the first-degree rela-7 T& S, H4 S1 M
tives. There were no siblings.
# m/ ~: G: r j/ w7 J/ T4 I# aPhysical Examination; I3 y+ L$ i& f
The physical examination revealed a very active,& A F7 W; ]% `9 ?
playful, and healthy boy. The vital signs documented
* z# n/ _) M+ V, T* sa blood pressure of 85/50 mm Hg, his length was# y- p) J7 d- }+ D, w; k- c' f0 A
90 cm (>97th percentile), and his weight was 14.4 kg
9 c5 i7 N$ K" z3 F3 a(also >97th percentile). The observed yearly growth3 q- D e) n- {& P) y9 F* T+ ?
velocity was 30 cm (12 inches). The examination of
+ J( H4 |; _7 |0 {& U. xthe neck revealed no thyroid enlargement.
+ B5 K2 O1 [! H' u8 ZThe genitourinary examination was remarkable for6 N% Z2 T6 Z& F6 E }( H t, _5 \9 k
enlargement of the penis, with a stretched length of0 ^! S; u" b0 r" R5 c
8 cm and a width of 2 cm. The glans penis was very well
0 W% e, `: ^1 V/ Hdeveloped. The pubic hair was Tanner II, mostly around
0 S& R8 M" T( E! u: G, b! z540
4 Q7 t! s2 [, A' Qat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from+ s# O Z9 b \. G% {7 S) [3 V
the base of the phallus and was dark and curled. The
# o* }0 t. S4 Dtesticular volume was prepubertal at 2 mL each.
9 T" y# z+ C) M3 o+ U& [* M# fThe skin was moist and smooth and somewhat6 m; [# d0 m+ @% P0 ~* m: W: d
oily. No axillary hair was noted. There were no
' \+ Z6 ]7 f2 F: M- h* vabnormal skin pigmentations or café-au-lait spots.
q. C" Z: M7 u& F( Q" \Neurologic evaluation showed deep tendon reflex 2+
9 b" u2 k3 \$ P+ ^# g0 zbilateral and symmetrical. There was no suggestion
; ?. i1 d- Z H/ s7 ?( Oof papilledema.
6 l5 u& u0 ?. e. _2 ?4 s$ {Laboratory Evaluation: I' w ^/ x n5 K2 n7 g; w
The bone age was consistent with 28 months by& W9 g! w% ^# J1 N, E5 q
using the standard of Greulich and Pyle at a chrono-
# {; L) |/ k6 Y' R' glogic age of 16 months (advanced).5 Chromosomal
# w0 V$ m; K, q* A* t& V6 y8 jkaryotype was 46XY. The thyroid function test
1 P. a, l0 o3 F: Q% a' Oshowed a free T4 of 1.69 ng/dL, and thyroid stimu-# K; y$ {* Z! D; ^
lating hormone level was 1.3 µIU/mL (both normal).; K; G% f# G% z4 n
The concentrations of serum electrolytes, blood
1 W( x0 ?9 [, J! t; Ourea nitrogen, creatinine, and calcium all were) k% R( n+ T" m
within normal range for his age. The concentration% I3 ~7 m- P. _, L
of serum 17-hydroxyprogesterone was 16 ng/dL8 \! X8 A% Y# k
(normal, 3 to 90 ng/dL), androstenedione was 20
' c G1 {# v' f. Q; S6 R7 Ong/dL (normal, 18 to 80 ng/dL), dehydroepiandros-* r) P/ j- S2 I: y) E6 l& j
terone was 38 ng/dL (normal, 50 to 760 ng/dL),
9 |! U2 R! h; W7 Q6 s8 E gdesoxycorticosterone was 4.3 ng/dL (normal, 7 to
# x5 ^1 L+ Z: N& q9 F2 h( h49ng/dL), 11-desoxycortisol (specific compound S)
5 W2 f7 f J: j( @: U; Lwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
' f! `" Q0 v) L& B9 G0 x! D# |tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total* c& t t3 i2 E$ ^; X
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
5 k1 u6 d. D) y( R/ D& q+ \and β-human chorionic gonadotropin was less than) l& i/ p! R2 N2 S" y+ F5 g! V
5 mIU/mL (normal <5 mIU/mL). Serum follicular N* R. W- |. \9 O
stimulating hormone and leuteinizing hormone. Y- q1 a9 ~2 Y8 J! j
concentrations were less than 0.05 mIU/mL
# Q& y6 M `/ e) E( d(prepubertal).
2 R6 w; r5 {+ b- `7 ~ { l" h2 TThe parents were notified about the laboratory
; o5 j+ |2 P" a6 a4 q, jresults and were informed that all of the tests were
; _* W% k! k) a7 }: Fnormal except the testosterone level was high. The
) ^9 _, c& Y. `- d8 ]follow-up visit was arranged within a few weeks to% H# p2 a! c, M8 E: |6 V C
obtain testicular and abdominal sonograms; how-# x5 U8 f q5 n' s
ever, the family did not return for 4 months.
' U0 u$ s x2 B( O. `8 @8 [/ r$ APhysical examination at this time revealed that the% }" Q% R' y5 c6 Y" o2 [& J
child had grown 2.5 cm in 4 months and had gained
Y8 L& o7 v3 I! _2 kg of weight. Physical examination remained! J7 Z2 ]) ^! b6 Y5 f" z3 n
unchanged. Surprisingly, the pubic hair almost com-
; T; B1 X" r E, L$ Vpletely disappeared except for a few vellous hairs at5 J' V3 l% u# ^, ~
the base of the phallus. Testicular volume was still 2/ s3 [+ p$ y; a! U6 R7 r
mL, and the size of the penis remained unchanged.
$ L& ~; r1 L- B/ k# UThe mother also said that the boy was no longer hav-! Z% C" q. V8 g- _% ]+ L4 q, |- k; O
ing frequent erections.) T$ x2 T1 v0 c
Both parents were again questioned about use of5 J. W4 N) C7 b- A6 A# a+ A
any ointment/creams that they may have applied to
" t: a' V, g$ F* d$ O4 {the child’s skin. This time the father admitted the; L! p$ y3 r- P8 d
Topical Testosterone Exposure / Bhowmick et al 541
/ |' ]+ q2 b% \1 C; Juse of testosterone gel twice daily that he was apply-
4 m7 z1 b- g- Ding over his own shoulders, chest, and back area for: `. M& `; O$ w7 y1 Q6 o, K
a year. The father also revealed he was embarrassed
9 t, \* S. y7 `5 _7 @6 Kto disclose that he was using a testosterone gel pre-
+ }7 }) B0 c9 X+ \% jscribed by his family physician for decreased libido( ~6 L( K5 F% E1 y8 V0 j! J
secondary to depression.3 Z5 |4 B7 X6 ?. H( ~
The child slept in the same bed with parents.: H+ K' M" g, q: O0 n" \9 `
The father would hug the baby and hold him on his
4 D7 T( V' \+ n: Cchest for a considerable period of time, causing sig-
) g( h) e" w6 s9 ynificant bare skin contact between baby and father." X) |; ~, f5 d
The father also admitted that after the phone call,
& _+ e+ c. W. L/ M8 Ywhen he learned the testosterone level in the baby
* X6 e) ?8 V/ f0 {was high, he then read the product information7 K. B3 ^& o4 u7 K# z9 o. ^
packet and concluded that it was most likely the rea-
" _4 D1 Y$ t. _, t6 M, sson for the child’s virilization. At that time, they6 s+ S5 N+ I# T8 `+ ]# }. S
decided to put the baby in a separate bed, and the) E/ g1 b6 o1 m4 C3 y3 o- w7 p* P
father was not hugging him with bare skin and had
, s, ^& r, Z; q) l2 P; gbeen using protective clothing. A repeat testosterone3 C- ^$ `" R6 q* d2 _7 D6 P; u
test was ordered, but the family did not go to the
7 m0 p7 M7 p% P/ K# t* |/ ~laboratory to obtain the test.3 M9 I5 s" C l1 K) K+ H
Discussion
$ p, D( F( I2 w4 Y* F" i3 |4 H3 EPrecocious puberty in boys is defined as secondary t4 G* s7 g; t; c
sexual development before 9 years of age.1,46 S) j/ V7 z7 H3 H" n
Precocious puberty is termed as central (true) when* U. h1 R% Q( ]# B# s- k" T/ \$ W
it is caused by the premature activation of hypo-
! k3 G! F0 U- L9 _2 j. q/ F: a+ sthalamic pituitary gonadal axis. CPP is more com-
8 n* n4 B" t) mmon in girls than in boys.1,3 Most boys with CPP
- T9 w, M& p7 ?0 D" V/ Omay have a central nervous system lesion that is
; r7 T; r- d6 m2 j A! W( D4 rresponsible for the early activation of the hypothal-8 F* B4 l) o0 |- J
amic pituitary gonadal axis.1-3 Thus, greater empha-; m+ @0 c6 g2 q. P
sis has been given to neuroradiologic imaging in
$ k5 f1 N, z4 h( j" ?+ |boys with precocious puberty. In addition to viril-/ w8 X" Z& ~! r
ization, the clinical hallmark of CPP is the symmet-
1 [+ k8 Z4 @* Trical testicular growth secondary to stimulation by' `8 `) X' E) Z5 w9 p
gonadotropins.1,3
# @$ I5 r" V# P: b% A) ]Gonadotropin-independent peripheral preco-
* w5 W+ m% E- c4 }6 Zcious puberty in boys also results from inappropriate
8 E% ~- M# N4 p& ~ b3 pandrogenic stimulation from either endogenous or
, u1 j. e0 \* T2 y8 p1 Y. s' L, Y% _exogenous sources, nonpituitary gonadotropin stim-
) v. g8 S( {/ m( f \8 Bulation, and rare activating mutations.3 Virilizing* `" D8 g; t9 I: [) p9 h
congenital adrenal hyperplasia producing excessive
* s! x/ N- [6 r. f( @" [0 `adrenal androgens is a common cause of precocious# S2 O2 E$ U7 }! E/ C9 j- f
puberty in boys.3,4& S+ g& `* K/ A. ?: l4 M* q9 I+ A
The most common form of congenital adrenal
0 z, n- f+ T- n* L# z4 ~. Zhyperplasia is the 21-hydroxylase enzyme deficiency.8 m5 m1 y) H: y
The 11-β hydroxylase deficiency may also result in5 x N( Y. O( a' U. H+ o
excessive adrenal androgen production, and rarely,
1 `. T1 z' _1 Y0 ?, I, Lan adrenal tumor may also cause adrenal androgen' L' H3 N0 S) K$ v* h7 g
excess.1,3+ ^. v( a2 V8 d7 `& n
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
! v4 \- l* A3 D0 a542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
8 |1 g/ g$ [4 E( Z6 F1 c. x1 o' nA unique entity of male-limited gonadotropin-" F5 }; d3 J) e, }' q+ D: x; f
independent precocious puberty, which is also known- f# m1 b/ f- {7 R8 [7 }
as testotoxicosis, may cause precocious puberty at a6 r8 }2 t1 X: t0 ]0 N% c X8 f* v
very young age. The physical findings in these boys& N3 K, R$ d9 k: o3 N% W/ n( X. z
with this disorder are full pubertal development,: W5 h7 j' B. o: b
including bilateral testicular growth, similar to boys
( s: _, d k1 t$ l. K6 c3 f9 [with CPP. The gonadotropin levels in this disorder, F s2 ~' H9 E6 P9 Q8 T
are suppressed to prepubertal levels and do not show
/ F6 }9 ~$ v* y' G& n5 ]pubertal response of gonadotropin after gonadotropin-
; J# B2 V0 t& P3 c% }& j( }# ~releasing hormone stimulation. This is a sex-linked' @) s7 G8 L4 m% T% g* L
autosomal dominant disorder that affects only5 Z( F7 m8 U" M# p0 o( ~1 h: D
males; therefore, other male members of the family
9 o" Z( n9 k% Y. Q* Emay have similar precocious puberty.3
! V1 F$ l) _+ S! R& g% TIn our patient, physical examination was incon-
+ E1 N ^$ Y) b% }. m0 fsistent with true precocious puberty since his testi-
2 T1 a4 p( B! m- J4 G2 F3 D: Ucles were prepubertal in size. However, testotoxicosis9 F& M4 k" Z2 G) E
was in the differential diagnosis because his father
: B# b1 g/ {- V7 c& M2 }started puberty somewhat early, and occasionally,! y3 S% b6 @$ G
testicular enlargement is not that evident in the
$ C/ S0 Q( k+ j' z- m8 `6 ]3 ]beginning of this process.1 In the absence of a neg-) y0 q# ^. M* U* L" i
ative initial history of androgen exposure, our
4 t, X- {1 x% I# e1 E3 s1 I+ \1 l! fbiggest concern was virilizing adrenal hyperplasia,/ j" H5 L4 a5 p# w* {2 N* M( A
either 21-hydroxylase deficiency or 11-β hydroxylase
) R! K4 j3 ` g" h3 p% H/ i+ Udeficiency. Those diagnoses were excluded by find-
# V: E/ B4 o! v, O9 `+ d1 @! ring the normal level of adrenal steroids.
8 k; P9 ^* Q2 _. }The diagnosis of exogenous androgens was strongly8 p, c% ?! |3 M& |% e
suspected in a follow-up visit after 4 months because" R3 l6 ~- |: i
the physical examination revealed the complete disap-! M7 O4 D& E& r
pearance of pubic hair, normal growth velocity, and
6 Y+ V1 [% a, V& i+ P0 |decreased erections. The father admitted using a testos-
& e% V% U' r$ o5 G; q5 O( Tterone gel, which he concealed at first visit. He was
6 p% K0 n0 ^: [6 Q" V6 n- q3 @: Busing it rather frequently, twice a day. The Physicians’
9 E8 b+ g2 z- ~( o+ h5 F }+ X$ S- wDesk Reference, or package insert of this product, gel or
j( J% J( {* P" P7 n7 E2 S! w; ?) G8 ecream, cautions about dermal testosterone transfer to9 [# K$ J+ l3 s2 ~
unprotected females through direct skin exposure.
. L0 M/ m3 {4 Y6 DSerum testosterone level was found to be 2 times the( y6 g( a8 E _% K. }9 k/ R- j
baseline value in those females who were exposed to
# m+ R# H' x; D% L. x5 F) h3 ]even 15 minutes of direct skin contact with their male b, X9 w$ d, e3 n: \& H
partners.6 However, when a shirt covered the applica-' J6 z2 t, E# a" \( B: {
tion site, this testosterone transfer was prevented.
4 i- [( S7 P, |+ m) gOur patient’s testosterone level was 60 ng/mL,2 p- H" n0 W9 k) j/ J% b) E
which was clearly high. Some studies suggest that9 p' I+ j7 c8 h. m# T j/ ^
dermal conversion of testosterone to dihydrotestos-. g a5 V7 b/ f1 G1 R8 ~/ g4 j
terone, which is a more potent metabolite, is more
+ g1 u" U% K e: \1 tactive in young children exposed to testosterone
3 [$ {. c, U4 I, b8 |/ [0 r: _exogenously7; however, we did not measure a dihy-
& X5 `! \" I# Ndrotestosterone level in our patient. In addition to- P K/ u/ x3 c9 N
virilization, exposure to exogenous testosterone in
) B6 C% O8 x2 _$ N1 Y" schildren results in an increase in growth velocity and
; u, h* s# n9 L, radvanced bone age, as seen in our patient.- Y! p8 b r' d% R2 J) G' ]
The long-term effect of androgen exposure during
9 ?/ ?0 q1 V' q3 x* V% b& Gearly childhood on pubertal development and final
5 C2 D0 ]& h6 b# K; l5 xadult height are not fully known and always remain+ Q7 [. c/ d& x* J: o
a concern. Children treated with short-term testos-
% M% r/ y+ n6 P, m, G. e/ A* _& G- mterone injection or topical androgen may exhibit some
% }2 T) c5 B4 ?# i6 ^acceleration of the skeletal maturation; however, after
& b) O$ M& X; zcessation of treatment, the rate of bone maturation
* T C$ [. S1 i, {( j% `( [( c3 Ldecelerates and gradually returns to normal.8,9
4 {2 o7 {# {( o7 e! ~There are conflicting reports and controversy
2 i0 j( p3 [ ^5 Z. ^) c2 aover the effect of early androgen exposure on adult
9 l* A2 L1 R0 V- o! wpenile length.10,11 Some reports suggest subnormal
8 _3 w; ]3 Q- P. n: c7 Hadult penile length, apparently because of downreg-
2 g, _0 |' l' Y% @ulation of androgen receptor number.10,12 However,
3 l* i% F9 @9 n( u! sSutherland et al13 did not find a correlation between/ l# X/ c$ ^! q3 \4 l% {+ c
childhood testosterone exposure and reduced adult
2 K6 Y' c) y5 Spenile length in clinical studies.9 }9 Q) H0 y2 ^% Q
Nonetheless, we do not believe our patient is4 Z+ o/ m, m" k- \
going to experience any of the untoward effects from
7 h- g% t! p y0 \testosterone exposure as mentioned earlier because" J" l6 I% m+ {0 Y+ P6 S3 O
the exposure was not for a prolonged period of time.( L. m! C! i; B6 P8 r, Q. \6 P
Although the bone age was advanced at the time of8 x' H) ]" s8 z# s# N8 T
diagnosis, the child had a normal growth velocity at3 L+ E+ K9 H' ^
the follow-up visit. It is hoped that his final adult
& n( O$ _) v: p" S' k' oheight will not be affected.% K" t2 f6 L1 t
Although rarely reported, the widespread avail-2 o( ~' B- h) p' j& m" f9 X# z) q; f
ability of androgen products in our society may
9 e* e$ a/ v7 F. v% o6 tindeed cause more virilization in male or female
6 N+ o# z, a* m. F5 w5 _children than one would realize. Exposure to andro-- [3 H+ w. L5 I6 Y/ I7 T
gen products must be considered and specific ques-+ O+ F, M. i8 c
tioning about the use of a testosterone product or
^7 n3 e! k a9 S% Vgel should be asked of the family members during0 ~$ x6 N ]3 s* q; y8 y7 I
the evaluation of any children who present with vir-/ H" @; \% c5 X/ M1 [, f, ^* G
ilization or peripheral precocious puberty. The diag-
@7 S4 W: v) N/ J4 ?4 E0 rnosis can be established by just a few tests and by8 O/ R0 H& W" y* U
appropriate history. The inability to obtain such a |% B3 f7 J6 I0 Y1 Z) {
history, or failure to ask the specific questions, may/ `( [. d7 K/ T8 [5 B7 b! S
result in extensive, unnecessary, and expensive. } z8 Q$ C0 Q6 F# R
investigation. The primary care physician should be5 x7 R6 P# }) I. j
aware of this fact, because most of these children
1 v* r* K ? l4 C$ smay initially present in their practice. The Physicians’
L: W( U! ?$ i8 c% b- | t6 D( gDesk Reference and package insert should also put a
3 d- v6 W) ~2 A1 `! f* ywarning about the virilizing effect on a male or0 F3 U; ?$ ]: A* a: X
female child who might come in contact with some-
+ X+ I! P1 I( i$ Aone using any of these products.) z2 u; A b$ r/ _ f0 G
References
; @, Y8 d8 ~6 A5 z3 J+ b8 q1. Styne DM. The testes: disorder of sexual differentiation
( X4 R/ L4 }$ J, j [and puberty in the male. In: Sperling MA, ed. Pediatric3 m- D8 ?0 W9 ~2 r+ I; z, U
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;. T% D! R: B3 f( i, B5 R$ Z
2002: 565-628.
- H0 i$ e; u4 U. p2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
; n5 s* @) y5 Hpuberty in children with tumours of the suprasellar pineal
9 D' J& e2 a& }- N+ W1 t2 ]7 tat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
: L/ E! R- w) Q8 t# |# W0 YTopical Testosterone Exposure / Bhowmick et al 543
/ ~7 t& `2 t0 r( v4 _$ pareas: organic central precocious puberty. Acta Paediatr.2 e( N' @! r0 A, N3 J
2001;90:751-756.
6 T0 a0 I9 a; C0 C$ P3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
- t5 K6 R& e% ~5 ~/ xPediatric Endocrinology. 4th ed. New York, NY: Marcel
8 ` ~$ _' G9 j2 q" |8 bDekker Inc; 2003:211-238.
: H2 K0 x6 q7 `/ ^9 p4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual' K6 r% w, v# Y4 b9 @+ S2 Y1 t
development in a two-year-old boy induced by topical
9 Q$ F0 E% B' e$ h' f9 Yexposure to testosterone. Pediatrics. 1999;104:e23.- s' l" |. h# S3 c0 E# e+ T6 k
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of, i: H$ H }; a: P' C3 v
Skeletal Development of the Hand and Wrist. 2nd ed., G' \0 |4 l4 }3 t: W/ w+ Y& S
Stanford, CA: Stanford University Press; 1959.. b' B' \- o' P8 ]1 s9 t* D5 d
6. Physicians’ Desk Reference. Androgel 1% testosterone,
+ a" V: R4 m- a7 k# e1 SUnimed Pharmaceutical Inc. Montvale, NJ: Medical
( y/ E8 |; D/ TEconomics Company, Inc; 2004:3239-3241.
. t; H" Y5 ^+ Z' I8 Z; [1 I7. Klugo RC, Cerny JC. Response of micropenis to topical7 G' c9 o4 g3 q8 Y
testosterone and gonadotropin. J Urol. 1978;119:! ?2 ]5 [; g* `
667-668.+ b5 K. j* [' | ]; A/ H) s& D
8. Guthrie RD, Smith DW, Graham CB. Testosterone2 A' W6 }2 H, ]2 [! V+ F, n7 u
treatment for micropenis during early childhood. J Pediatr.6 t/ v1 B" w$ D& x/ X
1973;83:247-252.
9 r, z, v1 K& |; e9 Z9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone. z- \9 K3 {% J
therapy for penile growth. Urol. 1975;6:708-710.2 F: H# |2 y$ n" e
10. Husmann DA, Cain MP. Microphallus: eventual phallic5 N6 n, Z" P2 y, |
size is dependent on the timing of androgen administra-
& o# E3 p- O( @6 d# X7 ?" ?tion. J Urol. 1994;152:734-739.
$ k8 R5 U( T5 }11. McMahon DR, Kramer SA, Husmann DA. Micropenis:3 N8 l, h" M/ p! I$ f. O
does early treatment with testosterone do more harm7 k" {- ]; t) O ]
than good? J Urol. 1995;154:825-829.! d7 c8 i7 D8 f
12. Takane KK, George FW, Wilson JD. Androgen receptor
6 P9 u7 v5 R9 i/ Oof rat penis is down-regulated by androgen. Am J Physiol.
" |# c9 _# ?# T& ]& @$ j$ i1990;258:E46-E50.
/ ]9 o, A( @% ^+ X- m13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect$ j$ ^6 g* O% c$ l
of prepubertal androgen exposure on adult penile$ E9 l7 O. _* }% @) I2 p7 T8 B
length. J Urol. 1996;156:783-787. |
|