- 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
6 E1 N; D: n6 A& V5 u' M5 J8 o$ rprecocious puberty (CPP), which is mediated
. d9 u5 o/ q/ W1 \: P' Dthrough the hypothalamic pituitary gonadal axis, has5 ?, V4 n1 x; V4 }( j' @# D
a higher incidence of organic central nervous system
& x' w& Q v- O# ^3 G0 Slesions in boys.1,2 Virilization in boys, as manifested! u- b. t7 K* D
by enlargement of the penis, development of pubic
7 C5 k' x( ]9 N/ X$ b |hair, and facial acne without enlargement of testi-
5 J" R+ o, \" _+ L! s, S. N/ vcles, suggests peripheral or pseudopuberty.1-3 We; a3 Q& q$ i. O/ r
report a 16-month-old boy who presented with the
# {. a& T4 t6 W2 C2 nenlargement of the phallus and pubic hair develop-
& i( W/ `$ z% `1 k3 G; rment without testicular enlargement, which was due
4 L, d7 u8 p& S/ Qto the unintentional exposure to androgen gel used by
1 e2 E) |9 H9 U4 ^the father. The family initially concealed this infor-
5 \$ h# H2 v* V+ i0 b. K xmation, resulting in an extensive work-up for this
; B) J( f$ u. [4 K9 echild. Given the widespread and easy availability of
; B+ O2 p; v c+ x* etestosterone gel and cream, we believe this is proba-
K) Q0 t- G8 u& f7 u! M. pbly more common than the rare case report in the
6 O' j8 x+ s' z8 N, Dliterature.4
, W, p( D# Q$ |, TPatient Report
; }( \( S" f L( V' SA 16-month-old white child was referred to the
0 _# S% D. ^: x9 C( uendocrine clinic by his pediatrician with the concern
! |4 |5 r* ` g; g" v# H% N. qof early sexual development. His mother noticed
+ a: e t8 W) y% C& C+ Ilight colored pubic hair development when he was' }9 h6 ~/ {; `* A3 D2 X7 b# C
From the 1Division of Pediatric Endocrinology, 2University of
+ }# ?, }$ {/ YSouth Alabama Medical Center, Mobile, Alabama.5 f0 r) b: F+ ]9 @
Address correspondence to: Samar K. Bhowmick, MD, FACE,
/ N' k% W" Z r5 B$ D6 G& `Professor of Pediatrics, University of South Alabama, College of
4 p) R+ k7 P. J+ i: P cMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
: g- Y* ?' E: O4 Q' I+ |9 Ze-mail: [email protected].
X/ s5 G( m# N* m& N) l: cabout 6 to 7 months old, which progressively became
* ~. ]8 j/ z- b! R N! f! U# n! Wdarker. She was also concerned about the enlarge-0 ~3 x: c; y9 F/ c( K* @
ment of his penis and frequent erections. The child% M3 p% _. F2 ]7 V
was the product of a full-term normal delivery, with
d$ t- g6 M1 V# za birth weight of 7 lb 14 oz, and birth length of8 C2 p8 e2 b$ g
20 inches. He was breast-fed throughout the first year. b6 X7 f3 r. G3 U
of life and was still receiving breast milk along with
8 g, `1 h8 N- S4 S X8 y: Csolid food. He had no hospitalizations or surgery,8 Z1 X7 @8 A5 B& { @% n( ]3 |5 k
and his psychosocial and psychomotor development
" ?" S: |3 B) ]was age appropriate.
% v( A3 h. K/ d' b' n+ n1 aThe family history was remarkable for the father,$ @3 D& O, J' m7 w
who was diagnosed with hypothyroidism at age 16,
% m7 D7 m- M* b1 Pwhich was treated with thyroxine. The father’s) ]7 {% n2 [( d! {( b
height was 6 feet, and he went through a somewhat/ D& C3 d1 {9 Z: J. D) ?" ]1 w
early puberty and had stopped growing by age 14.
3 U. F4 @! g% ?: J% T. N7 b1 tThe father denied taking any other medication. The1 A2 ?6 v# k' I3 B( b8 R
child’s mother was in good health. Her menarche$ B* h. D d/ J! A6 ?4 E
was at 11 years of age, and her height was at 5 feet- `5 _0 _4 G- V2 d+ N) P
5 inches. There was no other family history of pre-
9 ~" c$ u$ ]* Q9 U+ v, |- kcocious sexual development in the first-degree rela- S2 I" p/ h+ t; M! A/ L8 r5 M
tives. There were no siblings.
; {, r6 k& V7 S8 VPhysical Examination k1 E' M+ L: h9 M1 J7 S, y
The physical examination revealed a very active,
$ @/ F6 n+ w4 ~" ?# b! ~, Jplayful, and healthy boy. The vital signs documented1 e+ `0 F Q, b4 f. X1 G, w' @
a blood pressure of 85/50 mm Hg, his length was
3 u' }. `( v/ W1 b( C90 cm (>97th percentile), and his weight was 14.4 kg2 {% _2 h2 G! j5 Q- L2 ^
(also >97th percentile). The observed yearly growth
( I5 ]- z, N4 P' R9 L: D1 yvelocity was 30 cm (12 inches). The examination of) P1 b4 A9 U ?% ~4 o0 _+ P$ s
the neck revealed no thyroid enlargement.
3 b9 c7 `; L* ]) B1 b9 vThe genitourinary examination was remarkable for5 Q8 Q. h D8 j8 X0 E
enlargement of the penis, with a stretched length of: v" u9 G5 F+ Z2 {; |4 W7 c
8 cm and a width of 2 cm. The glans penis was very well/ Q% o3 J& k% x; a" s6 u2 T
developed. The pubic hair was Tanner II, mostly around0 \1 o- Z9 S* z, N- i
540/ Q0 z# ^7 o/ c+ r& R. m" v& Y
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from; T, O, [- p) X
the base of the phallus and was dark and curled. The( ]+ N3 }* s) S& K4 D1 E
testicular volume was prepubertal at 2 mL each.& Q+ z/ q* Z7 M, X* ~% w
The skin was moist and smooth and somewhat
* ]# E6 I: t1 n7 Z0 voily. No axillary hair was noted. There were no3 W0 p+ r+ x: ?4 J9 ^/ [
abnormal skin pigmentations or café-au-lait spots.1 s" o/ G% X' H) w: d- U0 Y
Neurologic evaluation showed deep tendon reflex 2+
4 K) j4 u3 y/ [* ~! i8 Hbilateral and symmetrical. There was no suggestion! z! \% P. D2 ?2 X' {- |
of papilledema.' M' N3 x# C# b; C9 e: g$ }
Laboratory Evaluation
5 l3 C* ^, {2 ~0 }6 O( n- q4 f; bThe bone age was consistent with 28 months by+ L8 f* f) b; N/ H. S
using the standard of Greulich and Pyle at a chrono-$ s+ G5 ^; Q3 f
logic age of 16 months (advanced).5 Chromosomal% i5 e" Y) @9 S0 C2 s( Y
karyotype was 46XY. The thyroid function test7 y' x3 X* i; @& {5 V: q
showed a free T4 of 1.69 ng/dL, and thyroid stimu-! L* x$ ]7 U) D
lating hormone level was 1.3 µIU/mL (both normal).
, k" p$ r- Z G: V9 pThe concentrations of serum electrolytes, blood7 l0 |1 @4 }! @3 h9 U# p
urea nitrogen, creatinine, and calcium all were+ L& K" P# O6 j+ O# Q1 i. Z
within normal range for his age. The concentration0 S! A' C2 [* A d
of serum 17-hydroxyprogesterone was 16 ng/dL! E- C+ S; s( T8 Y* Y7 r5 \3 E# s
(normal, 3 to 90 ng/dL), androstenedione was 20
! E% y$ `2 F. y& K# Q" w9 ung/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
2 [' f( N* w( s& e1 E3 x; p3 Mterone was 38 ng/dL (normal, 50 to 760 ng/dL),+ M8 P L# S, j: Y: m
desoxycorticosterone was 4.3 ng/dL (normal, 7 to9 K, l1 Z1 a% Q" u7 K
49ng/dL), 11-desoxycortisol (specific compound S)
0 v% c, ~4 C7 t' m" \/ s1 W- Jwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
0 K) S5 m: [ P! t) F( r( Z: a3 ktisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total: o: u5 F2 c, j8 i
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
6 I* [8 c) B$ B( K) Xand β-human chorionic gonadotropin was less than
9 X" n8 X( k, p* e q6 H3 n8 W x/ G5 mIU/mL (normal <5 mIU/mL). Serum follicular
* u* U* h" A1 P+ L2 x Mstimulating hormone and leuteinizing hormone
% D; u) x% w0 o" }! bconcentrations were less than 0.05 mIU/mL' q0 y+ m. F+ _' N
(prepubertal).
7 a: z- e+ B8 _The parents were notified about the laboratory- t& j6 V! Z8 C* ~6 b$ L* f
results and were informed that all of the tests were& S" q# \1 c# E% L8 N
normal except the testosterone level was high. The0 J3 a f( m6 S
follow-up visit was arranged within a few weeks to
. n; e( {9 b+ I) P3 `obtain testicular and abdominal sonograms; how-" I& [! t6 y |1 e
ever, the family did not return for 4 months.$ v C2 i4 `2 f. z; D9 ]
Physical examination at this time revealed that the1 q# d0 Q" F( d% o+ W
child had grown 2.5 cm in 4 months and had gained
2 Q1 i0 S& P' ?" q9 }# X: {( A2 kg of weight. Physical examination remained; M; I- P- m' F7 W2 z( l
unchanged. Surprisingly, the pubic hair almost com-
# {+ W; p A; E- v, {3 }pletely disappeared except for a few vellous hairs at
( ?9 s, H" C' G& G% F# h% Q f. Ethe base of the phallus. Testicular volume was still 2
0 p$ n" E$ c+ MmL, and the size of the penis remained unchanged.
/ @" h: ^3 I+ K; A% _1 ^0 \5 HThe mother also said that the boy was no longer hav-
; |5 [& ~ t/ r. Fing frequent erections.! |! a2 c, \' ?' ]( g; m9 O
Both parents were again questioned about use of
4 f& C7 E. y8 b2 D# V, g. gany ointment/creams that they may have applied to
* S8 U9 ~9 s _0 _ uthe child’s skin. This time the father admitted the
/ N3 S) v1 n% M" [! eTopical Testosterone Exposure / Bhowmick et al 541
1 J# a+ T7 Q7 x- y* z H6 Z c! |use of testosterone gel twice daily that he was apply-
' D! [4 I, i* J) m+ Wing over his own shoulders, chest, and back area for
{5 s9 X7 \. w! C: j, T5 va year. The father also revealed he was embarrassed
, N+ T k( I$ _* Z/ kto disclose that he was using a testosterone gel pre-
8 X" I v5 g4 i# X9 m. x7 fscribed by his family physician for decreased libido
; Q0 ]. U: O4 Isecondary to depression.
8 M. _. w' e5 s- JThe child slept in the same bed with parents.) A* O$ P2 @" L( O0 _; C
The father would hug the baby and hold him on his1 {, i" H+ J U: ^; h; v3 @7 ]) Y
chest for a considerable period of time, causing sig-
, m! m& r# l' A* h: Q/ |nificant bare skin contact between baby and father.
0 q5 {% o# B9 R: c1 W' cThe father also admitted that after the phone call,
9 L1 v) J# w: ?* l _, r# bwhen he learned the testosterone level in the baby
8 O2 z2 i7 n+ b1 x9 Iwas high, he then read the product information
- h; ~" c9 q# A% [* rpacket and concluded that it was most likely the rea-
/ s/ r( b. l1 c0 t0 T( o' `son for the child’s virilization. At that time, they9 ]) E$ W _, {) x6 S$ \9 Z: V3 l& t
decided to put the baby in a separate bed, and the8 l `8 m" Y/ W4 z
father was not hugging him with bare skin and had3 E" O& n2 @" y% V! R X# f3 W) L
been using protective clothing. A repeat testosterone8 p+ N* U/ j9 c/ o1 M6 Q& r9 z
test was ordered, but the family did not go to the
/ o& C# ~5 k& L6 ~8 o9 ^* e9 blaboratory to obtain the test.
0 W, N3 z2 T" ?% I3 mDiscussion
1 n' c3 P( Z9 O h9 x0 yPrecocious puberty in boys is defined as secondary
7 |' Z+ D, V8 G3 g' {; u# msexual development before 9 years of age.1,44 n* J1 c9 y# p" w, x5 v4 {9 F
Precocious puberty is termed as central (true) when
4 G$ Y9 l+ C/ b) q0 A4 o0 f6 `it is caused by the premature activation of hypo-
3 T; y6 }. Y' {$ uthalamic pituitary gonadal axis. CPP is more com-8 A0 Q0 M; h" J; o b6 `! J# c
mon in girls than in boys.1,3 Most boys with CPP
/ u2 A1 \/ l# l+ a, H5 R) f& umay have a central nervous system lesion that is
( a, u9 S H& ]# O9 y; z% Dresponsible for the early activation of the hypothal-% Q7 U- t# l7 u0 d' k, A9 z
amic pituitary gonadal axis.1-3 Thus, greater empha-
7 N7 o" E1 r( L, |$ g7 P% |sis has been given to neuroradiologic imaging in* o+ L& g* v' u* x1 `" a
boys with precocious puberty. In addition to viril-0 N& {3 ?% N0 F+ P u. B
ization, the clinical hallmark of CPP is the symmet-
( ^( {: a2 @4 V5 e. v7 D$ D; Lrical testicular growth secondary to stimulation by4 @" _8 m" j) _: c, x2 O0 n$ c
gonadotropins.1,3% @0 k, T) `% G& [( ^
Gonadotropin-independent peripheral preco-
) H& _- u7 n. A' q8 a. [4 Tcious puberty in boys also results from inappropriate$ q) x$ O/ D: l* r6 F' a) n! R
androgenic stimulation from either endogenous or
: x9 x" F, V6 O' M4 ]& mexogenous sources, nonpituitary gonadotropin stim-
4 i# c/ X8 `7 M- P ?: s% o% bulation, and rare activating mutations.3 Virilizing' f0 W9 J# v) w0 F8 q! _
congenital adrenal hyperplasia producing excessive1 D3 x" S4 _" ^
adrenal androgens is a common cause of precocious
" [. k# w0 l# V1 T, t; x4 Vpuberty in boys.3,4
! O2 Z0 } G1 cThe most common form of congenital adrenal
, ]( x8 @8 V4 p3 M1 [- |% bhyperplasia is the 21-hydroxylase enzyme deficiency.
) W( X( ]( M" S& g/ u% aThe 11-β hydroxylase deficiency may also result in
5 Y( n7 ~: |" ~7 C& K" a% g/ ]/ j: Zexcessive adrenal androgen production, and rarely,2 E7 k" U ^/ N6 l; c& ^
an adrenal tumor may also cause adrenal androgen8 Q( @/ B+ d2 o0 x
excess.1,38 [9 X" F: i5 q& z `, d t% S
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from* m$ M7 a2 X* J' @8 U
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007; N, ?6 h L: X4 r6 P' T/ S
A unique entity of male-limited gonadotropin-! Y, Q8 d2 v( s- x" ^) m# J% O
independent precocious puberty, which is also known1 U' J- m T1 u3 v I: `
as testotoxicosis, may cause precocious puberty at a3 C4 H6 M3 r# }1 q1 R/ J) A$ w2 e i
very young age. The physical findings in these boys! g& X3 D$ s8 Q* e9 @4 d: W
with this disorder are full pubertal development,
4 r* `+ d/ p! i( u: _( Vincluding bilateral testicular growth, similar to boys% y: {/ g# G( p( F
with CPP. The gonadotropin levels in this disorder! B. v1 i. q! S- q
are suppressed to prepubertal levels and do not show
0 M) a a \1 A I# w& I4 ?pubertal response of gonadotropin after gonadotropin-
: U( S$ }2 k( A0 K2 H- C% greleasing hormone stimulation. This is a sex-linked0 K' s- t. {4 K; [
autosomal dominant disorder that affects only
8 E4 D; g& n2 \$ h% Cmales; therefore, other male members of the family! ~2 E+ p! i, Z- E" L5 Z0 {
may have similar precocious puberty.35 f9 x) i, E" Y. S* v. [% \# ?
In our patient, physical examination was incon-. b- C) v# o% Y, l- T+ t4 N6 d" M, o
sistent with true precocious puberty since his testi-
( |8 J/ j0 x6 z# w$ Z# V$ Y- _cles were prepubertal in size. However, testotoxicosis
/ M: ~1 ?/ U' @was in the differential diagnosis because his father% U! ], q5 K/ O1 v. i
started puberty somewhat early, and occasionally,
% v9 H# B4 }9 j7 S' o0 e! B+ Q4 Wtesticular enlargement is not that evident in the6 u7 T0 T/ o" U! g$ g
beginning of this process.1 In the absence of a neg- M* I7 M* Z) D! v2 k
ative initial history of androgen exposure, our
. c& [2 O' ?* k6 ?biggest concern was virilizing adrenal hyperplasia,
7 I+ o$ Z1 V/ {, M- deither 21-hydroxylase deficiency or 11-β hydroxylase
! |% j- K6 G1 V; mdeficiency. Those diagnoses were excluded by find-
, e* p5 L0 F" R, Wing the normal level of adrenal steroids." A# X8 T. J( z
The diagnosis of exogenous androgens was strongly
* ~* W: z* t2 D# p+ D+ n9 Bsuspected in a follow-up visit after 4 months because
" b6 }7 t" V- W( a6 [6 ^the physical examination revealed the complete disap-
6 D+ U# e5 Z6 `5 \; {" {pearance of pubic hair, normal growth velocity, and
$ P7 ~* S& ~- ]1 [$ I0 x7 odecreased erections. The father admitted using a testos-
, u2 t: Q7 C- Sterone gel, which he concealed at first visit. He was; X+ @4 ~% V9 l/ F
using it rather frequently, twice a day. The Physicians’
. G$ V3 Y7 X4 p. W6 _# MDesk Reference, or package insert of this product, gel or
2 r- [0 \% t4 b7 U/ |2 V% G* _cream, cautions about dermal testosterone transfer to2 m0 B, e/ f5 m4 W9 m( p3 X1 J3 H0 m0 u
unprotected females through direct skin exposure.! v" {0 Y' a, x& }" A" h
Serum testosterone level was found to be 2 times the
) _- B7 ~- e- [; M2 Tbaseline value in those females who were exposed to
! A' X, H' k5 c) F. B+ c. {( Aeven 15 minutes of direct skin contact with their male
1 p+ _# c. m# \8 e# zpartners.6 However, when a shirt covered the applica-
3 c- Z& z% z }$ Ation site, this testosterone transfer was prevented., B4 u+ v$ c" h7 y* }
Our patient’s testosterone level was 60 ng/mL,: v( q$ y$ ?4 V; v) x
which was clearly high. Some studies suggest that
" O( t. P+ l8 O6 @' Cdermal conversion of testosterone to dihydrotestos-- W! ^9 q x- `4 J; @8 H& b! A
terone, which is a more potent metabolite, is more
6 r8 x5 A* Z) b7 n+ n" qactive in young children exposed to testosterone7 g+ `6 ^) R" d+ d: Z/ r+ v3 u
exogenously7; however, we did not measure a dihy-
4 t k& \. T5 z! u8 ?drotestosterone level in our patient. In addition to
, b1 y- U1 `5 `% U a/ t+ d$ ^% W3 _virilization, exposure to exogenous testosterone in
5 y* H/ M/ l( O1 n. gchildren results in an increase in growth velocity and* ?7 A0 e) R4 T' o% \6 ?& F
advanced bone age, as seen in our patient.
+ E# B# X* K, KThe long-term effect of androgen exposure during8 A8 g& B0 n$ o% Y& {0 r
early childhood on pubertal development and final: P" v2 D+ m2 g% y. g8 d
adult height are not fully known and always remain
2 n( T* X1 w( p/ X3 fa concern. Children treated with short-term testos-/ [* @) z& }, W$ F: ~+ Y ^
terone injection or topical androgen may exhibit some
& j/ l/ D' I, Q% v4 Dacceleration of the skeletal maturation; however, after
2 b& |, Y3 Q4 U2 c( T8 Z5 Kcessation of treatment, the rate of bone maturation& n7 j6 N1 Z6 [9 Z P5 l/ [
decelerates and gradually returns to normal.8,95 D; C% y: G+ `/ l
There are conflicting reports and controversy
* C% @* [' P+ g: K1 v2 ^4 y8 f& mover the effect of early androgen exposure on adult
3 W) ]: y4 B6 `" H+ X! i e6 c3 @! Upenile length.10,11 Some reports suggest subnormal
% f+ E/ [/ p. l# y; eadult penile length, apparently because of downreg-
; i q1 X" n, b2 n# @ v' Wulation of androgen receptor number.10,12 However,
! ?: |0 Y; H* fSutherland et al13 did not find a correlation between8 x. e3 e3 e8 y. F
childhood testosterone exposure and reduced adult
5 f" E5 b) L# Q% fpenile length in clinical studies.
% S. L9 H1 S5 Z5 P' xNonetheless, we do not believe our patient is ^6 g* J( q) }& H
going to experience any of the untoward effects from
" a% z' Z* I5 m& `" g$ ztestosterone exposure as mentioned earlier because
+ B j' d# B, M8 W) ?7 u/ K- f9 Nthe exposure was not for a prolonged period of time.$ G3 n! r1 W7 E1 ^2 g# L4 A1 B
Although the bone age was advanced at the time of
; A8 v7 l* M/ {6 Ydiagnosis, the child had a normal growth velocity at6 I) ]0 W0 G( f& i5 D
the follow-up visit. It is hoped that his final adult* e4 i0 Q1 u. O. O, m0 C8 w
height will not be affected./ } _$ a6 o+ E# q( H% j: g8 H$ U
Although rarely reported, the widespread avail-& ~; c6 a! U* r" d x
ability of androgen products in our society may
* @( s1 f& X; S& Yindeed cause more virilization in male or female
- D' v& ]; H4 Uchildren than one would realize. Exposure to andro-4 g& `# k( V0 v8 j; N' B' ?
gen products must be considered and specific ques-. E& K4 _4 c$ f) D
tioning about the use of a testosterone product or
' l$ U0 J# W# ~+ b7 [2 D8 Tgel should be asked of the family members during
% G: ~1 R% }3 A o2 Fthe evaluation of any children who present with vir-' J+ ^- s4 ?. a/ v& e# U+ N. e
ilization or peripheral precocious puberty. The diag-
, T# G! m5 P' d: G `1 Jnosis can be established by just a few tests and by/ [& n0 k% t9 t7 A- G
appropriate history. The inability to obtain such a' b7 _9 q. A3 y. j' S8 j _8 H5 v
history, or failure to ask the specific questions, may
( W, l5 w* C' \ L( G3 y" G/ iresult in extensive, unnecessary, and expensive: e+ ^0 x8 z) v, R( ]
investigation. The primary care physician should be. o* [! {5 a5 L8 ~& |
aware of this fact, because most of these children0 f: V2 v) W9 U- G' t% q
may initially present in their practice. The Physicians’$ r8 k: e1 ?: u- P+ v
Desk Reference and package insert should also put a2 [% N$ x% ]7 i9 R! o- b
warning about the virilizing effect on a male or
" V d3 m6 V8 a6 T8 A0 Vfemale child who might come in contact with some-
- z, R7 j. m8 Mone using any of these products.
8 O' s l1 q( ]+ wReferences
3 [0 U$ \* M* W' m S3 l, m1. Styne DM. The testes: disorder of sexual differentiation
4 t' @1 B' t! fand puberty in the male. In: Sperling MA, ed. Pediatric* u: d V# f1 x. o
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;* f- D$ c! U7 x1 X- U' ^# V, Y
2002: 565-628.
, A3 g# U$ j" `; d! R" a8 b2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
* D2 b4 F" r0 t! Y1 h: v1 T, F( @ qpuberty in children with tumours of the suprasellar pineal
6 }7 N$ I: m5 g9 f! I& } U1 nat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
2 g; g; @$ ^: PTopical Testosterone Exposure / Bhowmick et al 5433 `, C; n" P+ f+ X( k5 T! f: j" {
areas: organic central precocious puberty. Acta Paediatr.
0 `- d6 ~4 N6 R, H5 [& L2001;90:751-756.
+ n G2 I' s+ E3 d# s& h3 f3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.7 W) \2 C# e9 }. l
Pediatric Endocrinology. 4th ed. New York, NY: Marcel
- I! P; ?( Q8 A" D2 yDekker Inc; 2003:211-238.: D$ [1 U6 y6 Y1 R! H, `! U2 ~2 M
4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
0 Y b E: J) R( _5 Sdevelopment in a two-year-old boy induced by topical5 [, _9 G1 R6 i4 J/ a8 c
exposure to testosterone. Pediatrics. 1999;104:e23.
! \; l' ]. n Z' m3 s N% A5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
* j' R. [4 h1 [& Z" O# r% c/ wSkeletal Development of the Hand and Wrist. 2nd ed.2 w! X: J g$ m. a
Stanford, CA: Stanford University Press; 1959.# C0 J7 }" I" Y, u
6. Physicians’ Desk Reference. Androgel 1% testosterone,
* w. B6 u8 w1 m0 m) c8 l& vUnimed Pharmaceutical Inc. Montvale, NJ: Medical( I$ M- s! W" X2 [, C) n Z& A
Economics Company, Inc; 2004:3239-3241.
5 l( k" ^) e6 |- ^4 |9 ?+ U$ O7. Klugo RC, Cerny JC. Response of micropenis to topical) y' i+ e- m- i
testosterone and gonadotropin. J Urol. 1978;119:
, e; _6 T* [2 }$ o667-668.: U' W, P+ b! r2 w' Q7 n
8. Guthrie RD, Smith DW, Graham CB. Testosterone# ?3 |/ f- u) v# `, A
treatment for micropenis during early childhood. J Pediatr.* I4 V9 r% s& x2 g3 k. k. Y# ^! O/ C
1973;83:247-252. ^. [# ^& D) ~3 N9 O! L
9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone: o+ ^2 D- \' d5 B2 |! g
therapy for penile growth. Urol. 1975;6:708-710.
9 @1 P0 {& G* I% l5 R10. Husmann DA, Cain MP. Microphallus: eventual phallic+ S1 a0 Q" J4 T+ R1 b' r9 z
size is dependent on the timing of androgen administra-. E1 i# J. w0 |5 k6 l9 A/ a
tion. J Urol. 1994;152:734-739.
/ Y; Z* u& x$ J8 Z; W: t11. McMahon DR, Kramer SA, Husmann DA. Micropenis:4 n7 K7 ^6 Q [( H3 E% P
does early treatment with testosterone do more harm
( d+ s" s: K A2 ithan good? J Urol. 1995;154:825-829.
( r' {, D- l8 D# b* j" P% s5 A6 F12. Takane KK, George FW, Wilson JD. Androgen receptor% ^8 @4 r3 f- t: q" }3 q0 D" k
of rat penis is down-regulated by androgen. Am J Physiol., h" X7 Q; G& S) I. j
1990;258:E46-E50.( u# E7 |- A+ k! m, X
13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect
! x' c8 ]2 _+ D4 O: L7 Fof prepubertal androgen exposure on adult penile
g+ V. [# C+ X: {3 Z$ Slength. J Urol. 1996;156:783-787. |
|