- 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+ N2 e0 {" x! i8 `1 y/ z
precocious puberty (CPP), which is mediated( L& Q: D# I& `; V: f2 a
through the hypothalamic pituitary gonadal axis, has8 |, P% m! w& b% h+ b- G, R- b! Z
a higher incidence of organic central nervous system
1 S, G; u9 S$ u% `" z8 xlesions in boys.1,2 Virilization in boys, as manifested: Z0 H$ \# V: k0 b1 `9 J
by enlargement of the penis, development of pubic) F: ~5 d! k+ w; x
hair, and facial acne without enlargement of testi-! O, d3 \1 @& g- q) m
cles, suggests peripheral or pseudopuberty.1-3 We1 P9 _! `6 X6 H) @
report a 16-month-old boy who presented with the4 G5 q+ R; X9 i& i
enlargement of the phallus and pubic hair develop-: G. ~/ c7 L2 [) a: n& k
ment without testicular enlargement, which was due7 `$ i+ A, ]6 j2 F6 S
to the unintentional exposure to androgen gel used by
7 g; ~ Q6 v# e `8 \) jthe father. The family initially concealed this infor-
; n0 s: ?* z- K; [6 wmation, resulting in an extensive work-up for this+ V+ `9 q3 E% h* H; O
child. Given the widespread and easy availability of
5 @; F" p5 p- F6 [+ P; Stestosterone gel and cream, we believe this is proba-) f% x; O! t7 ?& q
bly more common than the rare case report in the7 t4 {) |0 Z# ?: L
literature.4* R& W0 V2 B$ a. p9 l
Patient Report* \ X$ Q6 I# F* g- @
A 16-month-old white child was referred to the
& S* |) y$ O; y" E, R1 {endocrine clinic by his pediatrician with the concern# M: N! o; @! v7 v8 e, d9 W
of early sexual development. His mother noticed" b/ e1 m# L5 F7 ]
light colored pubic hair development when he was% Q8 T+ M7 h% I2 j7 Y2 p# E
From the 1Division of Pediatric Endocrinology, 2University of9 K2 J* E% u1 w" L! [9 U+ M
South Alabama Medical Center, Mobile, Alabama.
0 v! u' F" U% f9 A3 z5 h. }Address correspondence to: Samar K. Bhowmick, MD, FACE,% j& e* n4 {& |: n, @8 @1 u D
Professor of Pediatrics, University of South Alabama, College of
4 t1 U" e3 t r4 NMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
! v ~- G2 X, B* x) X6 q7 P6 E- H2 i) ne-mail: [email protected].
" | v2 w F, L# o3 @8 Cabout 6 to 7 months old, which progressively became" O" A$ `# d U& J% G" s. E; v
darker. She was also concerned about the enlarge-
4 k) Q7 z. t: f, D* vment of his penis and frequent erections. The child
% a( M2 y8 c, d" gwas the product of a full-term normal delivery, with
3 W8 U* O- }9 q! S* C( Z) Ua birth weight of 7 lb 14 oz, and birth length of
7 x0 |& J: Q6 a& |2 l' u20 inches. He was breast-fed throughout the first year4 q4 D0 K% G8 v5 D/ Q8 x. \
of life and was still receiving breast milk along with
9 S4 R$ H) q# n. c: x* osolid food. He had no hospitalizations or surgery,
8 D G# g3 J4 `1 |* i2 mand his psychosocial and psychomotor development8 Z- ] ^+ ~2 t4 C( g/ W; ~4 A- R
was age appropriate.
! M2 x5 Z) t8 X) g2 c, u1 ^. A& l! IThe family history was remarkable for the father,
- j, P4 U0 d+ u( |" ~* x+ m5 `( Mwho was diagnosed with hypothyroidism at age 16,) g; H( T3 i' r! V W7 q# V
which was treated with thyroxine. The father’s
/ b, M# S/ l: o6 ^" p0 Kheight was 6 feet, and he went through a somewhat
: P# X. h/ `' R+ Wearly puberty and had stopped growing by age 14." K% |+ [1 [- Y* ] v1 W" l
The father denied taking any other medication. The# J$ f2 U" k2 A* a5 m' H
child’s mother was in good health. Her menarche: A( v0 P L! D, V1 r
was at 11 years of age, and her height was at 5 feet
+ H9 W& o1 M" U! b9 [5 inches. There was no other family history of pre-4 _( ?8 a# ^ p
cocious sexual development in the first-degree rela-6 X& w$ P# R3 j) W
tives. There were no siblings.5 e; P5 F4 m: }
Physical Examination# q# Q1 W5 j; _/ _3 u$ H. j
The physical examination revealed a very active," r4 \8 ] d8 x- e7 b4 D2 A
playful, and healthy boy. The vital signs documented* v4 N* K+ Z, m9 m S
a blood pressure of 85/50 mm Hg, his length was: s& d5 D' V$ O* F
90 cm (>97th percentile), and his weight was 14.4 kg
8 n2 p4 [0 t" K) p( Z(also >97th percentile). The observed yearly growth
5 h0 h* R, z4 m! q$ mvelocity was 30 cm (12 inches). The examination of+ M0 w2 ]" |3 z& `4 Y. V
the neck revealed no thyroid enlargement.
1 \+ _/ R: ^; ?7 EThe genitourinary examination was remarkable for
( y; y( u+ ^1 [9 P9 ^; denlargement of the penis, with a stretched length of
) L: G. t5 I* Z9 M- T8 cm and a width of 2 cm. The glans penis was very well
. c( I6 f% i1 U/ hdeveloped. The pubic hair was Tanner II, mostly around7 Z' Y- _) v4 Z; D
540
) ]! {7 Y8 P8 U% u W* dat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from. H7 x# r7 o( I' h4 |- m
the base of the phallus and was dark and curled. The
0 x8 l: _. d5 ]* I5 N4 O4 Rtesticular volume was prepubertal at 2 mL each.
0 z0 {* Y; Z0 W* B6 ~2 GThe skin was moist and smooth and somewhat
; D) d, d9 T8 J; N) Y) t. G- eoily. No axillary hair was noted. There were no
% K, c$ [4 n! i8 Vabnormal skin pigmentations or café-au-lait spots.& V( u% S4 y6 T9 |
Neurologic evaluation showed deep tendon reflex 2+
7 N% P; q# |$ ^' h' Obilateral and symmetrical. There was no suggestion
3 ?# ~$ b! `5 Mof papilledema.
2 k5 ]& r7 W: q0 r6 l2 ALaboratory Evaluation4 ^9 \5 u" [7 O) D5 a! O
The bone age was consistent with 28 months by3 b: P& o. t) y2 Z- ?6 S. {
using the standard of Greulich and Pyle at a chrono-
: ]0 m$ S6 N) i$ Tlogic age of 16 months (advanced).5 Chromosomal% D. [' }. C! y; I: d
karyotype was 46XY. The thyroid function test7 ^, p2 O+ K& I, _
showed a free T4 of 1.69 ng/dL, and thyroid stimu-. R- x2 r1 ]3 w( w B( R% p
lating hormone level was 1.3 µIU/mL (both normal).3 @" t- b4 s$ w
The concentrations of serum electrolytes, blood# [% p7 }; N7 b- }# ~1 B. Y
urea nitrogen, creatinine, and calcium all were. U) z- f P- i w
within normal range for his age. The concentration
$ q" p# ~6 ?' g/ e- {of serum 17-hydroxyprogesterone was 16 ng/dL
2 ]: \' |+ L. h& ?2 k(normal, 3 to 90 ng/dL), androstenedione was 20
* J8 A1 E+ Y. ~1 k7 Cng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
, k) T9 U" S! a) r8 Fterone was 38 ng/dL (normal, 50 to 760 ng/dL),
$ q6 F& M; c8 v9 Y! H/ ~desoxycorticosterone was 4.3 ng/dL (normal, 7 to
0 k/ F" k: G v% O" X) r' x% C49ng/dL), 11-desoxycortisol (specific compound S)
$ U: T8 s7 y( Swas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-/ A, A, g/ K2 a7 @0 {7 c
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
) C b8 L$ v) J) _testosterone was 60 ng/dL (normal <3 to 10 ng/dL),5 b# X* O2 ^# |' {% ^
and β-human chorionic gonadotropin was less than* s/ g" r/ V( W% E. T c7 [
5 mIU/mL (normal <5 mIU/mL). Serum follicular0 l% v, t" |! b6 c$ B. @
stimulating hormone and leuteinizing hormone- w1 Y, j" D1 _$ ~/ U
concentrations were less than 0.05 mIU/mL
1 P5 S& X# w5 N(prepubertal).
6 \1 l: H4 }4 [5 B! b3 }0 zThe parents were notified about the laboratory. R1 u/ \9 ^2 v
results and were informed that all of the tests were
- t3 K4 D P; S+ Nnormal except the testosterone level was high. The
) _$ ~0 O# o- s+ v! ffollow-up visit was arranged within a few weeks to
) b* h! d) X3 x4 d& v1 Hobtain testicular and abdominal sonograms; how-
7 J) [9 n: P) L' z9 |ever, the family did not return for 4 months.
4 f/ l! c+ T' f" i2 K# UPhysical examination at this time revealed that the# h# @8 t) b' w, r g% v
child had grown 2.5 cm in 4 months and had gained
# A2 n' }3 t# S {: E$ m$ ], e1 J# f }2 kg of weight. Physical examination remained( D% G' t+ c' `# Q7 K. q
unchanged. Surprisingly, the pubic hair almost com-
8 Y+ |2 a$ R8 F% d" ?# l+ d- d8 opletely disappeared except for a few vellous hairs at3 H$ \% ^7 t& z7 p$ X% |2 D+ f2 p
the base of the phallus. Testicular volume was still 2# @0 n* A% ?" q8 Z2 ^5 n
mL, and the size of the penis remained unchanged.
1 S8 S) V% c3 Q- Z) P: {The mother also said that the boy was no longer hav-9 G$ ?6 t+ [! l4 E
ing frequent erections.
8 s" }; g) `" N1 FBoth parents were again questioned about use of6 {2 U; ?/ p5 @4 n
any ointment/creams that they may have applied to, Y. ]2 g/ d! |3 |( Z2 u
the child’s skin. This time the father admitted the$ N: I: T( Y3 W( k
Topical Testosterone Exposure / Bhowmick et al 541
" p Q8 f* Y9 V% h [& S9 iuse of testosterone gel twice daily that he was apply-8 a/ I5 x) F( p9 F: ]
ing over his own shoulders, chest, and back area for5 F% S2 y0 w5 A4 d, G S" l
a year. The father also revealed he was embarrassed/ s3 ]' B% w3 b# h; T
to disclose that he was using a testosterone gel pre-1 `# d' g8 U# F+ y; T5 Q
scribed by his family physician for decreased libido
$ V* D; A! R8 {, A; C, |secondary to depression.- q" e- S: G& H/ h( g8 z
The child slept in the same bed with parents.
' q! ^1 T! Y. \, f* _The father would hug the baby and hold him on his8 d5 n" x7 \, X, R8 n/ g3 f4 ]
chest for a considerable period of time, causing sig-0 O1 _7 t3 T" H6 R7 r
nificant bare skin contact between baby and father.+ x; M, _/ w, L& c. b% M
The father also admitted that after the phone call,
( m( V# w- E; n5 lwhen he learned the testosterone level in the baby
* ~; |/ _- j8 Q. ]) J& `4 c8 t$ i( d/ xwas high, he then read the product information
0 W0 I' }. K6 k: @9 L' Upacket and concluded that it was most likely the rea-9 Y0 ]2 C3 C0 ? u: ?( w
son for the child’s virilization. At that time, they$ b+ l y; ^3 w
decided to put the baby in a separate bed, and the
6 E+ B4 w9 M& M3 X: M% Z0 [father was not hugging him with bare skin and had
$ [0 F, X6 A' n" k7 ~# B4 `been using protective clothing. A repeat testosterone
* j, N, p! S- i3 }9 d: t( Qtest was ordered, but the family did not go to the
# ^6 S n. w1 _4 Ylaboratory to obtain the test.: I/ _3 i" r2 \
Discussion, C4 e3 P: a, c! l- I/ O6 [
Precocious puberty in boys is defined as secondary- y5 @' S6 ~4 G. {' a. } y
sexual development before 9 years of age.1,4
% n" E8 j( n# s3 O$ YPrecocious puberty is termed as central (true) when
+ q8 J7 L2 @, f. g- w# w5 y Zit is caused by the premature activation of hypo-
1 M/ {& G F: ?' A% a Q" }thalamic pituitary gonadal axis. CPP is more com-
# f1 O- f3 B$ R: g. V# U, Y# G7 a. Dmon in girls than in boys.1,3 Most boys with CPP5 R, n" Z2 h9 w* ~
may have a central nervous system lesion that is
7 Q& K8 K9 {) F9 I8 w4 P" h+ wresponsible for the early activation of the hypothal-0 P8 ^" o- \) _' [8 S. Y7 @
amic pituitary gonadal axis.1-3 Thus, greater empha-1 R3 r, A2 E% v# p8 _% V
sis has been given to neuroradiologic imaging in2 S$ d. b$ {2 a: \: ^! \& Q
boys with precocious puberty. In addition to viril-. d; E- [# U. D4 z, B. q3 K, t# L1 _
ization, the clinical hallmark of CPP is the symmet-; w, W( I6 s" ?: }! q
rical testicular growth secondary to stimulation by! Z; A' T; }# Y* j
gonadotropins.1,3
" R5 \6 r% E: p/ Z8 h! ?! J( cGonadotropin-independent peripheral preco-
# r3 J! U" m( O9 Q8 Jcious puberty in boys also results from inappropriate% p4 K+ D2 Y; f2 \& e
androgenic stimulation from either endogenous or5 @% A: R9 Q) R4 B) I5 o* [
exogenous sources, nonpituitary gonadotropin stim-
Z: G o* Z' }6 U' { mulation, and rare activating mutations.3 Virilizing
! O1 g/ J8 |5 }' `congenital adrenal hyperplasia producing excessive
1 U, I2 [* t4 y. Z# [adrenal androgens is a common cause of precocious
$ Y8 X* ~' r. B) v( ^; ?puberty in boys.3,4( m. Z3 C+ p! D+ t3 ~
The most common form of congenital adrenal6 P y1 L5 O) B
hyperplasia is the 21-hydroxylase enzyme deficiency.9 [4 \9 K8 @* s# U# m& {; x: W8 [
The 11-β hydroxylase deficiency may also result in) ?1 H2 C$ L [
excessive adrenal androgen production, and rarely,4 P0 N8 I- @. O) L& O1 q3 a
an adrenal tumor may also cause adrenal androgen
( ?9 x# T# V' i O9 Fexcess.1,3
- H, c5 o8 |3 ~" n. vat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from8 t! b! G8 v0 p3 S- F
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007! P. l3 ^0 k6 T+ U: z
A unique entity of male-limited gonadotropin-+ Q- Y* {! D6 R0 d& @% d5 t
independent precocious puberty, which is also known7 e7 I% O4 D$ O! {9 N' b4 q, d. R' B
as testotoxicosis, may cause precocious puberty at a
1 i1 `4 @9 w* I7 _" n0 M3 hvery young age. The physical findings in these boys) C9 Q w) a; [, s5 h
with this disorder are full pubertal development,
) s1 b4 B- @ a: ^" @including bilateral testicular growth, similar to boys, O% ]2 |: h. B# ?/ b/ i3 T
with CPP. The gonadotropin levels in this disorder; c4 F* W1 ^/ P. x6 w
are suppressed to prepubertal levels and do not show
7 L3 ?' }- F% _& t/ T& z. gpubertal response of gonadotropin after gonadotropin-
" V/ V# W9 ~. c4 F! H* j" H' |6 `: Areleasing hormone stimulation. This is a sex-linked: H4 b0 k' a! D+ a& ~ g4 }
autosomal dominant disorder that affects only4 ^! u$ R$ K1 K
males; therefore, other male members of the family# |' }2 [! p. J6 }
may have similar precocious puberty.31 }3 n/ N3 R2 ^( }
In our patient, physical examination was incon-" Z7 n: j! ?0 d4 d- b
sistent with true precocious puberty since his testi-
4 W3 }/ ^+ D: s0 g. L1 _# z9 ucles were prepubertal in size. However, testotoxicosis5 P. U# S! B& p i# N
was in the differential diagnosis because his father* i( ]6 N: R( ]: d* u' ?1 G
started puberty somewhat early, and occasionally,
6 S4 b$ s( m) {+ R! ]testicular enlargement is not that evident in the
! E3 m" w! Z' | C/ Cbeginning of this process.1 In the absence of a neg-% D9 ?* I. ?5 r1 |# D7 W) X+ X: L
ative initial history of androgen exposure, our
; S F. c( t q. }6 Jbiggest concern was virilizing adrenal hyperplasia,$ M0 P7 _6 G9 _' `9 v0 i: g+ w7 P
either 21-hydroxylase deficiency or 11-β hydroxylase4 t \- F8 Y$ M& \6 s- ^
deficiency. Those diagnoses were excluded by find-7 X# X% m; _- Z
ing the normal level of adrenal steroids.' \- L; x6 q" S
The diagnosis of exogenous androgens was strongly
" c: U9 X( _: J9 j+ C3 c' rsuspected in a follow-up visit after 4 months because
, {' D9 ~, X/ J; [/ y) E4 z2 Othe physical examination revealed the complete disap-) e- d1 Q9 s1 }% p" _) u& G
pearance of pubic hair, normal growth velocity, and
" g$ T" f i# }9 U8 Udecreased erections. The father admitted using a testos-$ S# G# q' A- j+ n! b1 X# b$ u
terone gel, which he concealed at first visit. He was4 ~0 t Z* N4 V' {2 k7 p6 o
using it rather frequently, twice a day. The Physicians’4 @5 H8 e9 }$ e
Desk Reference, or package insert of this product, gel or
; \+ G) j- i, ?4 Ocream, cautions about dermal testosterone transfer to
; q P( ]' x: M# ~1 C" U! K+ Munprotected females through direct skin exposure.
- o; Z2 z" Z/ l. F5 [Serum testosterone level was found to be 2 times the
; a# u0 [6 B/ L3 v% zbaseline value in those females who were exposed to
( y D! M8 f& X) K* w7 h: [, beven 15 minutes of direct skin contact with their male+ o8 y! i; ~0 A: Y# v
partners.6 However, when a shirt covered the applica-1 R% d5 c, e0 k, B
tion site, this testosterone transfer was prevented.0 D2 z' ]* F* w, m" l
Our patient’s testosterone level was 60 ng/mL,
! V3 a6 `. J4 o" a2 Qwhich was clearly high. Some studies suggest that
( b* S1 V2 P V4 }1 r* U; ]dermal conversion of testosterone to dihydrotestos-
% ~% z# u7 B6 U/ U1 l1 Q: Rterone, which is a more potent metabolite, is more
7 P3 k/ h% D0 |& Wactive in young children exposed to testosterone
- L i' Z/ P8 R: G% rexogenously7; however, we did not measure a dihy-. {! R3 t' r3 b$ s9 c, h# c
drotestosterone level in our patient. In addition to
2 @! ?5 [) l. ?1 I$ d& |, Fvirilization, exposure to exogenous testosterone in8 u% y8 w6 e# |4 ^
children results in an increase in growth velocity and
6 |4 o' C; N' O# q/ Q& padvanced bone age, as seen in our patient.0 W3 c2 g; m" {+ I' z
The long-term effect of androgen exposure during
3 B6 S7 ?0 e9 ~& Y9 \3 ?5 Mearly childhood on pubertal development and final
7 u4 R4 _2 r6 y# i; a$ V1 Oadult height are not fully known and always remain) q! b6 L: v! {. n7 B0 E) q
a concern. Children treated with short-term testos-
5 Y" E, h1 q# h# Aterone injection or topical androgen may exhibit some
9 n l' [8 m. J$ I/ S/ Jacceleration of the skeletal maturation; however, after: H4 Q3 g& i) t) Z I1 X
cessation of treatment, the rate of bone maturation
, ~5 y. \/ d8 W9 w+ f* g8 K2 W, Tdecelerates and gradually returns to normal.8,9
5 G/ K, k5 T0 P$ E6 d, k7 QThere are conflicting reports and controversy$ Y/ r2 V' P% M4 O) h% ^8 {
over the effect of early androgen exposure on adult
: K5 C. w; \$ C2 qpenile length.10,11 Some reports suggest subnormal) x3 n8 T$ H6 w: @" S1 m; a4 `$ _
adult penile length, apparently because of downreg-3 F2 F8 {' Z7 ~
ulation of androgen receptor number.10,12 However,' p6 K% s4 M @) ?8 k
Sutherland et al13 did not find a correlation between
; t$ p$ d$ F9 j; @2 ^childhood testosterone exposure and reduced adult
, M6 r6 a) M: Q# h1 s; Fpenile length in clinical studies.
0 c! t) S6 M5 y" v& F0 iNonetheless, we do not believe our patient is
! j+ \+ T9 j2 V' Y4 r6 x/ s3 \! h- Zgoing to experience any of the untoward effects from
& Z8 M( v1 Z$ G1 A5 ~% s& ytestosterone exposure as mentioned earlier because
6 @8 b* s" h* s# u, Rthe exposure was not for a prolonged period of time.
( j7 X# }# |+ U% qAlthough the bone age was advanced at the time of
( E; l; }8 D- b2 Y. {diagnosis, the child had a normal growth velocity at: d) _8 ^- U' F6 A8 G' I: Q
the follow-up visit. It is hoped that his final adult
: S/ U4 ~* S1 m: Y# dheight will not be affected.3 h# |4 d+ Y0 d2 l3 x5 ^) i& i) t
Although rarely reported, the widespread avail-7 J! w; u2 H5 F b- U
ability of androgen products in our society may) U' L; c5 N, p6 T0 J6 d# B5 f2 I
indeed cause more virilization in male or female7 D; q. V9 h" B3 y( m* X5 Q8 c( p
children than one would realize. Exposure to andro-
! J2 W% H) o2 E( T/ c0 K# H$ g+ x2 n3 Tgen products must be considered and specific ques-
& Q( F; O S8 ]4 V0 C/ }7 `tioning about the use of a testosterone product or
: F" m$ `2 Z1 H2 j" Tgel should be asked of the family members during
. U- Z E4 s! A1 `; G/ V) X( Athe evaluation of any children who present with vir-0 L2 ?0 K) K; k. Z
ilization or peripheral precocious puberty. The diag-. r' [7 f0 m0 f, I% J% l
nosis can be established by just a few tests and by
5 Z p* R; K* n4 K0 nappropriate history. The inability to obtain such a
0 P3 x5 R0 j# P* h9 ohistory, or failure to ask the specific questions, may
4 c2 Q, `7 Y: R; D6 T$ jresult in extensive, unnecessary, and expensive
. H, V2 U# f) M0 F. u hinvestigation. The primary care physician should be
/ A" ^6 x( z, k2 p/ _' naware of this fact, because most of these children/ p8 v0 ?7 w7 ?0 [) ~
may initially present in their practice. The Physicians’0 p6 c3 K8 O" P$ Q; d
Desk Reference and package insert should also put a
( h9 k" g2 Q/ h0 ~* Y8 R! z2 Owarning about the virilizing effect on a male or* G& _5 f5 h/ p/ U1 Z4 d
female child who might come in contact with some-
. [5 ^0 S: ^1 U, Ione using any of these products.
% b& S: g& T9 H) p8 RReferences. f+ q3 |9 i, Z$ c1 \. I( ~: m
1. Styne DM. The testes: disorder of sexual differentiation7 Z+ x6 E3 t4 r# c1 z% J; C
and puberty in the male. In: Sperling MA, ed. Pediatric, U, y& M! Y A5 }8 U) i
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;- j7 P) X% }6 ~
2002: 565-628.
# T& O: b$ z7 P2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious2 K ~9 H' `$ I/ h
puberty in children with tumours of the suprasellar pineal
4 d1 O* S' o7 O% E8 Q. bat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from' J% S9 W; o! `5 y: y
Topical Testosterone Exposure / Bhowmick et al 5430 p$ c3 p& o$ I/ `
areas: organic central precocious puberty. Acta Paediatr.
2 @3 n: z" a& B- n2001;90:751-756.4 E9 J! [2 ?! [& ^& @3 }+ w0 V
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.7 p$ i1 H5 G1 P+ P
Pediatric Endocrinology. 4th ed. New York, NY: Marcel; \/ L7 V1 z0 O( u, }
Dekker Inc; 2003:211-238.
. h2 ^( q, j' v) C$ R8 Z4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
; U; y, A# `: B H- j$ ~2 udevelopment in a two-year-old boy induced by topical; r( W: m/ C9 `6 L+ p* e
exposure to testosterone. Pediatrics. 1999;104:e23.
6 E& P1 O+ n' b2 r5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
2 k3 F) n# B! O1 Q; P. ASkeletal Development of the Hand and Wrist. 2nd ed.2 Q& T; q5 g# D2 A# L& b0 v, d, F* @
Stanford, CA: Stanford University Press; 1959. p& i, ]( ^3 ^; ?; p r1 \
6. Physicians’ Desk Reference. Androgel 1% testosterone,3 L1 p7 |5 u! R7 J; m: ]
Unimed Pharmaceutical Inc. Montvale, NJ: Medical
% r1 W7 R8 G! M5 W. @1 ~, REconomics Company, Inc; 2004:3239-3241.
' x0 a* A- S [6 n2 E7. Klugo RC, Cerny JC. Response of micropenis to topical
) Q: Q' ?! Y( Y0 {6 S+ Wtestosterone and gonadotropin. J Urol. 1978;119:
; z/ s# L8 d5 P' L+ |" B667-668.
1 U1 C( S. w C+ S8. Guthrie RD, Smith DW, Graham CB. Testosterone$ f* Q8 V8 B& z. _5 z' `1 m/ j, s
treatment for micropenis during early childhood. J Pediatr.4 b& o& Z/ m6 _9 D0 k1 ]6 I
1973;83:247-252.
0 M9 x0 {3 t8 {4 l: X& @& _9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone
d0 N1 M* i: X$ _2 d Rtherapy for penile growth. Urol. 1975;6:708-710.- b6 y* f5 Q1 c! I j3 e( b* C3 e
10. Husmann DA, Cain MP. Microphallus: eventual phallic
) B1 l9 |1 P Tsize is dependent on the timing of androgen administra-/ p+ @0 ^6 t9 y$ o" y( f6 D0 N4 S
tion. J Urol. 1994;152:734-739.9 x) w/ p V6 v$ k6 h
11. McMahon DR, Kramer SA, Husmann DA. Micropenis:, o2 T6 }; Y1 K2 t9 V- B$ O! Z* ^
does early treatment with testosterone do more harm
: D$ b% i& G- H; X% W4 i9 m. uthan good? J Urol. 1995;154:825-829.0 @7 Y; ~0 O8 f7 G, N! W `) D3 q
12. Takane KK, George FW, Wilson JD. Androgen receptor
* f+ Q; B- o/ u" B! W- @4 C! Uof rat penis is down-regulated by androgen. Am J Physiol.0 P) x/ \/ G0 i6 u$ E
1990;258:E46-E50.
+ Z5 s& f. e$ M' j13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect# k6 J3 H. k% |. R+ S i
of prepubertal androgen exposure on adult penile
' F# L/ O* K: a. G wlength. J Urol. 1996;156:783-787. |
|