- 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
* n8 E3 r) X& t. T' Fprecocious puberty (CPP), which is mediated
: w1 f! d/ t9 y+ @9 Gthrough the hypothalamic pituitary gonadal axis, has( G0 D. R4 P! L/ N. g9 U9 @5 ?
a higher incidence of organic central nervous system, I* Q1 O4 y# a5 j0 [
lesions in boys.1,2 Virilization in boys, as manifested" ^" ]7 @) Q1 X s8 {
by enlargement of the penis, development of pubic% [/ H+ D' f! s& f9 d" k4 U! d$ M$ ?
hair, and facial acne without enlargement of testi-
5 j( @5 ^4 M6 R5 ]cles, suggests peripheral or pseudopuberty.1-3 We
; D2 w7 T0 r6 J6 y. _report a 16-month-old boy who presented with the% `/ v0 f( P# p. W2 P6 U
enlargement of the phallus and pubic hair develop-
! t* ]. l& w3 M3 C( S$ pment without testicular enlargement, which was due
/ O5 B( S1 M% y. R+ w2 M! gto the unintentional exposure to androgen gel used by
; v5 E f7 {5 l3 h e3 @the father. The family initially concealed this infor-
; N, T4 B _" N+ b. W# \mation, resulting in an extensive work-up for this- ]% T, e$ j. l* _$ `: X
child. Given the widespread and easy availability of
$ H9 i1 ` ^, k( ?6 Atestosterone gel and cream, we believe this is proba-
7 T& S1 Y, x, V2 jbly more common than the rare case report in the& q* s6 }" Z* U/ [
literature.45 B: c& f8 R9 p
Patient Report
5 T- A! ?. M+ q5 kA 16-month-old white child was referred to the" i( F0 d( E: m" H+ T
endocrine clinic by his pediatrician with the concern# u9 Z+ q0 o% T2 Z- c- \
of early sexual development. His mother noticed
: q5 U; d3 I$ r' Z* Mlight colored pubic hair development when he was9 }5 d% l) m) Z5 F5 p- O0 E
From the 1Division of Pediatric Endocrinology, 2University of* j" b1 C) \4 Z7 p( L8 e8 ] c
South Alabama Medical Center, Mobile, Alabama.
8 P: {. ^. s% ]) ^8 j, UAddress correspondence to: Samar K. Bhowmick, MD, FACE,% ?. `( p1 d o
Professor of Pediatrics, University of South Alabama, College of
; \& P+ p( W9 u/ ~* T7 lMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
+ X8 e+ n* b2 H6 o' a" ae-mail: [email protected].
4 ]! o5 u. ^( K) i3 n. Aabout 6 to 7 months old, which progressively became
c5 c! x5 J; V7 ndarker. She was also concerned about the enlarge-$ z u% J) Z. P# N9 Z
ment of his penis and frequent erections. The child
, c% ?+ X/ n+ D" G0 a0 K. ywas the product of a full-term normal delivery, with
! r( `1 [; X) c+ L( Z7 Ka birth weight of 7 lb 14 oz, and birth length of @6 q) g" r- [4 d6 _. {
20 inches. He was breast-fed throughout the first year; B% N( B) ?. `1 i2 H5 G
of life and was still receiving breast milk along with: g% `# n$ z' I, m* P: Q
solid food. He had no hospitalizations or surgery,& ?; t S" u( |2 A
and his psychosocial and psychomotor development
# _# S- u3 N2 O+ J; c; |: zwas age appropriate.
! N* L5 e: ^' P/ F, P5 Y, \The family history was remarkable for the father,
) S* @, `; _7 I& ]! \3 x/ K k$ `who was diagnosed with hypothyroidism at age 16,
4 e3 a8 V( S) I% G8 b) Fwhich was treated with thyroxine. The father’s
8 T( y' \8 i! T- v8 A' d9 _9 dheight was 6 feet, and he went through a somewhat. ^0 @. `4 s& j7 p2 N2 f, o2 N
early puberty and had stopped growing by age 14.( E3 s& ]" [0 [: s. Z) h7 q
The father denied taking any other medication. The- G4 G$ w3 v. r+ h
child’s mother was in good health. Her menarche; ~5 W" ?/ @" A, _ n
was at 11 years of age, and her height was at 5 feet
: _( ]6 H- |$ l2 d: E; K# h0 e5 inches. There was no other family history of pre-
3 \3 K7 ]: L' E4 O6 Kcocious sexual development in the first-degree rela-+ ^8 G/ i/ C; V# h, H5 N9 U
tives. There were no siblings.6 U# H0 s5 w+ Q& Y, I& i
Physical Examination% k- @, O6 H2 G% l/ Y0 N( D
The physical examination revealed a very active,5 d2 L. U/ u1 s- v! v
playful, and healthy boy. The vital signs documented. U" O( i5 M' \& B
a blood pressure of 85/50 mm Hg, his length was
8 s0 ^8 c) i0 N- h& p4 W; g90 cm (>97th percentile), and his weight was 14.4 kg2 n# }* O9 v) t+ T6 p
(also >97th percentile). The observed yearly growth
6 Q: I/ m9 |* O9 M2 w- Qvelocity was 30 cm (12 inches). The examination of I0 a5 i* w8 |! K: v( x
the neck revealed no thyroid enlargement.
- U7 S! R8 b4 N5 i- {$ }The genitourinary examination was remarkable for
. v. p3 [' S( P/ y: ~1 K! |9 oenlargement of the penis, with a stretched length of' w5 F! ?" D: {. m, n
8 cm and a width of 2 cm. The glans penis was very well
) @! L0 t) ]& J, h R# s1 ndeveloped. The pubic hair was Tanner II, mostly around
8 _+ _! I, _7 S( r8 q540
; x+ p! @( _4 @/ b0 ~: t" yat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from7 ^% \1 U6 N; g2 r& k) v, I; t
the base of the phallus and was dark and curled. The
0 C8 y; @" Z6 f6 Ctesticular volume was prepubertal at 2 mL each.* m. r0 i6 M. O8 p/ b
The skin was moist and smooth and somewhat
( a+ a# b6 \. N4 U0 t8 f' j" `/ G5 W- Goily. No axillary hair was noted. There were no
9 L( q) z3 y# E1 ?) zabnormal skin pigmentations or café-au-lait spots.# c8 K& f$ x6 u2 m! h
Neurologic evaluation showed deep tendon reflex 2+
6 N* ~! h/ V/ {& g& s+ [bilateral and symmetrical. There was no suggestion3 D6 ^! e' ~9 N3 s
of papilledema.& K+ r+ ], {1 O4 G" L
Laboratory Evaluation
' V4 j3 |, W7 b( J# I2 A- m2 q7 aThe bone age was consistent with 28 months by0 y, K9 m$ T) k; o" A
using the standard of Greulich and Pyle at a chrono-1 \( K l: [" o2 o2 Z; k6 _
logic age of 16 months (advanced).5 Chromosomal
/ C+ ?0 V, r+ L1 O2 m" a1 wkaryotype was 46XY. The thyroid function test
$ M% [9 j5 w6 e. A/ m" U8 `* Ashowed a free T4 of 1.69 ng/dL, and thyroid stimu-- u: y8 `5 S% |) f
lating hormone level was 1.3 µIU/mL (both normal).+ \* ?- T" m) C
The concentrations of serum electrolytes, blood# ^. p+ F' ~ X0 M( C
urea nitrogen, creatinine, and calcium all were
+ m2 w( P) V$ @/ F$ x* t1 c& rwithin normal range for his age. The concentration
}/ Y5 L; a+ E" G+ s5 O, K0 vof serum 17-hydroxyprogesterone was 16 ng/dL
: j# @$ |& h7 W# z. W1 _(normal, 3 to 90 ng/dL), androstenedione was 20
3 ~4 g( ~+ P& X. [' Wng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
5 S' `$ J! ^5 {- v5 Qterone was 38 ng/dL (normal, 50 to 760 ng/dL),$ }2 x) x/ K$ I6 H
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
: }, A) O- y) A. }' y49ng/dL), 11-desoxycortisol (specific compound S)
" s. G. m8 z. a, a% lwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-/ Y% x4 }% j+ w e$ `0 ]
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
% q$ b m1 u d& S( _6 O% `testosterone was 60 ng/dL (normal <3 to 10 ng/dL),# i2 T1 g$ t' _# s# t
and β-human chorionic gonadotropin was less than, o7 J) p" h" {# @0 c8 J! c! V0 o6 l
5 mIU/mL (normal <5 mIU/mL). Serum follicular
: [& C! k$ |4 b0 d m% `2 X: f kstimulating hormone and leuteinizing hormone
c8 G' l/ m/ r% ]: B: bconcentrations were less than 0.05 mIU/mL9 v: X0 u4 A0 Z% n
(prepubertal).
6 [& p# g% l6 m( t7 K4 A3 j1 FThe parents were notified about the laboratory, R: |8 j1 F* L$ [6 V
results and were informed that all of the tests were
5 U; r" f: _0 a# w5 l' bnormal except the testosterone level was high. The- k) B7 `( P9 u# U2 N9 j K8 L
follow-up visit was arranged within a few weeks to
0 E9 m9 @6 X* {' M9 Nobtain testicular and abdominal sonograms; how-/ h3 v# a# M/ t" V
ever, the family did not return for 4 months.0 s# _0 I C: @- F$ M
Physical examination at this time revealed that the
7 C5 e9 L2 u6 d f, _8 ^child had grown 2.5 cm in 4 months and had gained2 [/ q3 a3 P4 {6 g
2 kg of weight. Physical examination remained
; Y5 K S, U+ h, I1 r' bunchanged. Surprisingly, the pubic hair almost com-
% c2 `: j& X/ \" e4 b- Wpletely disappeared except for a few vellous hairs at2 p7 L7 A5 M) V* g3 G
the base of the phallus. Testicular volume was still 2! K, \. \, R5 E1 H
mL, and the size of the penis remained unchanged.( a6 O. S1 C' r6 V
The mother also said that the boy was no longer hav-0 o* c3 l5 s5 Z
ing frequent erections.
% ]& h+ T+ D, Q- B& |Both parents were again questioned about use of" w) z) f4 x: i, f: g/ @6 V
any ointment/creams that they may have applied to- s! G" a/ l5 B7 b
the child’s skin. This time the father admitted the
# S M+ B: ~/ G) d# NTopical Testosterone Exposure / Bhowmick et al 541
! y! l% g2 M4 H! G- V9 {" Quse of testosterone gel twice daily that he was apply-
. J( e! j7 J! fing over his own shoulders, chest, and back area for
. ~; N8 ^6 g. X9 b; K; g" {; `3 Ka year. The father also revealed he was embarrassed
; |- T& V7 B/ u. g$ w3 Ato disclose that he was using a testosterone gel pre-
# f, x* ^2 F+ M6 i0 r0 ]4 T/ nscribed by his family physician for decreased libido. W$ Y6 P$ }5 {9 @: ?+ ^8 y' k
secondary to depression.+ Y3 m! ?" F3 ]
The child slept in the same bed with parents.5 K$ P0 \6 D8 V1 p
The father would hug the baby and hold him on his# ]. S, J, h4 G+ L3 |
chest for a considerable period of time, causing sig-; O5 a$ {' m1 ]8 a% s8 N7 y
nificant bare skin contact between baby and father.+ n+ F) t0 L( x+ U$ s+ X
The father also admitted that after the phone call,
3 R1 i! c; q1 ]when he learned the testosterone level in the baby
' Q8 Q; g3 x' b! w2 swas high, he then read the product information
: I. D! p8 n4 p& l* K2 x# F: ?packet and concluded that it was most likely the rea-" ~0 r( e* n) g( b# m3 k
son for the child’s virilization. At that time, they. I7 d! O9 m+ D3 J! V: M
decided to put the baby in a separate bed, and the
3 Z3 [ f* s R9 A7 V0 [9 c, I0 b4 Qfather was not hugging him with bare skin and had% Z- g) s: o- w0 Y2 d+ y; T
been using protective clothing. A repeat testosterone
1 ?- @( r6 ]/ w* Ltest was ordered, but the family did not go to the
6 f5 A6 f8 J0 ^( Klaboratory to obtain the test.
& [, W7 N' u$ F3 y: R$ W- |! N$ p, }/ h. bDiscussion
3 {4 z5 f/ R3 cPrecocious puberty in boys is defined as secondary
* u9 T. u* a4 K! y" v# Tsexual development before 9 years of age.1,4
- [0 J a# m0 ZPrecocious puberty is termed as central (true) when
( t: H/ y# l9 s: v% b9 o# S& sit is caused by the premature activation of hypo-
/ T( O z, B1 _& h6 O$ T4 Uthalamic pituitary gonadal axis. CPP is more com-* W* l4 D! I; o6 b; D! V$ z
mon in girls than in boys.1,3 Most boys with CPP
) m# l! d- J0 Dmay have a central nervous system lesion that is
% K# U3 i/ N; M2 X: i' D; `responsible for the early activation of the hypothal-
U7 S! G+ S( Y' [! e( d% bamic pituitary gonadal axis.1-3 Thus, greater empha-& O/ P) Q9 d3 x s- G
sis has been given to neuroradiologic imaging in$ N% i3 j7 M/ @+ b9 m9 o+ M" i
boys with precocious puberty. In addition to viril-
9 n. _: K j; Kization, the clinical hallmark of CPP is the symmet-0 T7 l$ U# x: S7 R
rical testicular growth secondary to stimulation by
2 D: A; H9 l O Y4 N) o7 C( qgonadotropins.1,3
; }0 w# \* i' @+ v8 `; M$ d- uGonadotropin-independent peripheral preco-
9 a; j) Y( t$ R8 a( Y; A0 wcious puberty in boys also results from inappropriate
$ C) a$ o: l$ D' _# R, landrogenic stimulation from either endogenous or
) P0 l$ N B+ r. P. A* u8 Gexogenous sources, nonpituitary gonadotropin stim-
2 Z6 U/ p2 D5 b9 B; `ulation, and rare activating mutations.3 Virilizing
Z/ B% u4 k7 T) s; }congenital adrenal hyperplasia producing excessive
3 ?0 u& H+ a: l' hadrenal androgens is a common cause of precocious
; A f' \- k9 X( {0 X" L; Kpuberty in boys.3,4
9 t; G5 e3 S o, L$ ]The most common form of congenital adrenal
8 H/ r6 C' Q* ?; K+ ?hyperplasia is the 21-hydroxylase enzyme deficiency.5 q7 `8 B G5 `3 `6 ~- l
The 11-β hydroxylase deficiency may also result in' l, ^% _1 i7 y9 v% Y
excessive adrenal androgen production, and rarely,' u6 F n+ G t1 ?& P" a
an adrenal tumor may also cause adrenal androgen
" A0 K% ?# ?! I) _( U8 B! Cexcess.1,3
0 V6 O- l3 {0 H' s7 @% }+ B# wat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from& S- [* L9 q* n X' _! c. @4 S
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
0 a& I1 k5 j4 i: u& }A unique entity of male-limited gonadotropin-7 x6 h- h- s P
independent precocious puberty, which is also known" m" y/ D* T. `8 Z
as testotoxicosis, may cause precocious puberty at a. J4 j) {4 p9 s0 `8 i
very young age. The physical findings in these boys/ D( T7 `1 c" t( [/ b( U+ ?8 s
with this disorder are full pubertal development,
' j2 \) O: i) v! l N, T$ `- oincluding bilateral testicular growth, similar to boys! E$ ~ r0 k# m9 F
with CPP. The gonadotropin levels in this disorder7 q/ Q8 I/ N8 h6 a
are suppressed to prepubertal levels and do not show
. w) g5 C$ a {+ b m1 w- ^' x; Epubertal response of gonadotropin after gonadotropin-
, U" x$ \! d: s3 ]$ m4 n8 b8 |releasing hormone stimulation. This is a sex-linked
# R0 B6 F/ y4 Pautosomal dominant disorder that affects only
5 D* ^; E7 P+ \! U0 Xmales; therefore, other male members of the family9 O$ k7 u5 l8 D# |) d
may have similar precocious puberty.3
% Y3 O: M8 f2 |/ ] }# f5 ]In our patient, physical examination was incon-
# x9 V5 @% g* X p9 n9 ]0 xsistent with true precocious puberty since his testi-9 S$ ]' @6 ~ B) h) t( g3 k: M9 b
cles were prepubertal in size. However, testotoxicosis
2 G! x$ t& X; G5 S7 k# u+ V5 ]was in the differential diagnosis because his father/ z* s) J4 W7 A1 n/ {0 a9 @4 F% L% S
started puberty somewhat early, and occasionally,
: v$ Z' l. a% P' O4 Ytesticular enlargement is not that evident in the4 `- p4 C) I7 D7 P0 K
beginning of this process.1 In the absence of a neg-
* [) V0 |' h) y9 G* s$ ~ative initial history of androgen exposure, our
) a9 h# ?; }, k V. w3 Wbiggest concern was virilizing adrenal hyperplasia,
7 v4 \& G$ k, r4 u/ C# beither 21-hydroxylase deficiency or 11-β hydroxylase; N, y2 J& q" `& [1 V
deficiency. Those diagnoses were excluded by find-; u A6 {: {* f
ing the normal level of adrenal steroids.
. X3 _2 D' `* hThe diagnosis of exogenous androgens was strongly N5 N! O( l8 K* c4 S: [
suspected in a follow-up visit after 4 months because
& o; f, `1 ~- J: j5 [the physical examination revealed the complete disap-
9 A% C. E3 c4 H6 E/ W6 Npearance of pubic hair, normal growth velocity, and
8 e4 C; }9 L9 Y6 _9 }. Hdecreased erections. The father admitted using a testos-
0 g% l8 _9 b0 mterone gel, which he concealed at first visit. He was
. Y. }& G N/ [1 a7 \9 zusing it rather frequently, twice a day. The Physicians’& h, n2 p) ~. H1 ]4 Z" {8 }% \; x( Y5 N
Desk Reference, or package insert of this product, gel or
8 G5 `( n: _' c/ D3 K' ]9 X; l( ?cream, cautions about dermal testosterone transfer to+ |/ s, o4 G6 g$ R2 u6 J) a* _+ s
unprotected females through direct skin exposure.) s" h Q1 z( U' d8 u: p. w$ ?
Serum testosterone level was found to be 2 times the
! d# P: b. |: L5 u% v! U3 A8 Bbaseline value in those females who were exposed to
5 ]; k0 `7 F8 x5 z! feven 15 minutes of direct skin contact with their male
& L- U9 d9 [6 ]6 Y1 [# Xpartners.6 However, when a shirt covered the applica-
0 y) E7 v* z6 X$ _/ E, A4 G, Etion site, this testosterone transfer was prevented.
& p0 C3 }4 _ z5 NOur patient’s testosterone level was 60 ng/mL,; O7 ?; P$ m% j5 P, D' l
which was clearly high. Some studies suggest that
5 m3 Z/ \/ `2 s( r6 fdermal conversion of testosterone to dihydrotestos-
1 M( ~8 b, l+ d; lterone, which is a more potent metabolite, is more$ _7 h& ]+ p/ I+ ~
active in young children exposed to testosterone
! ^, E. r9 a, t; N' y: b, kexogenously7; however, we did not measure a dihy-" ]8 n7 V$ `2 z) J/ F
drotestosterone level in our patient. In addition to
) o7 d/ v1 ^& i9 r; l; Z2 S, ^ i' Ovirilization, exposure to exogenous testosterone in' l% r3 O6 S9 `8 ^5 d- i, D
children results in an increase in growth velocity and, e6 N% I" S% p2 Q
advanced bone age, as seen in our patient.2 g6 C/ L& c2 K8 Z( ]4 r' e7 E
The long-term effect of androgen exposure during& M! W. n: ^4 d( b& r0 f% s9 U7 a
early childhood on pubertal development and final
7 u N; r9 o# h+ l3 t* tadult height are not fully known and always remain
7 k; B& D8 }# H4 C8 ?2 xa concern. Children treated with short-term testos-5 A/ {% G' e+ k5 B) W
terone injection or topical androgen may exhibit some
1 V; R) c0 `8 q. I( k6 ]acceleration of the skeletal maturation; however, after! j% M1 z) V( }! K' g0 H
cessation of treatment, the rate of bone maturation
7 u7 s1 h8 t- h% ]6 l2 Gdecelerates and gradually returns to normal.8,9
6 K, B0 c6 t' I0 A; CThere are conflicting reports and controversy% f* a& T4 K( M H8 R$ G- s: Y
over the effect of early androgen exposure on adult8 x, u* C2 E2 l: q( \. L7 q% v" P
penile length.10,11 Some reports suggest subnormal+ U% ?# J7 k" }' q2 _( G
adult penile length, apparently because of downreg-/ K: ~' ?( T1 K/ R/ @4 K
ulation of androgen receptor number.10,12 However,# K- ?1 q/ t+ t! n! L
Sutherland et al13 did not find a correlation between
9 g+ g+ p9 [, d4 Ichildhood testosterone exposure and reduced adult7 \% S' Z! @4 Y4 q4 y0 i9 v
penile length in clinical studies.+ S6 p' g0 I) ~
Nonetheless, we do not believe our patient is" y+ R9 E) g8 O' n! o+ ?$ d
going to experience any of the untoward effects from
' O. q4 ~( n& @( M3 `0 c$ Htestosterone exposure as mentioned earlier because
6 J# b. s/ ^/ P& W- nthe exposure was not for a prolonged period of time.
6 D! w! P8 J) M# MAlthough the bone age was advanced at the time of
+ d5 D g Y: Q5 k& H* s. S, X5 j3 Sdiagnosis, the child had a normal growth velocity at
! }: a- L7 t e# m$ Tthe follow-up visit. It is hoped that his final adult; Y0 u( K& |: F6 `0 f0 Q% E' G: v9 ^
height will not be affected.
5 J5 O2 w, s2 l4 `: wAlthough rarely reported, the widespread avail-+ z0 t# a( k- p7 g! [1 n" o6 c
ability of androgen products in our society may
/ j; V4 Z2 B6 K9 l3 ^indeed cause more virilization in male or female$ N; o& Z8 D" |) w8 G9 p
children than one would realize. Exposure to andro-* w6 z% u6 k9 Y$ u$ u* |& ]! h* M
gen products must be considered and specific ques-( T* S/ R: d8 ~
tioning about the use of a testosterone product or
. e3 ?% H5 e( S: ngel should be asked of the family members during, S0 l: |; m7 F4 e5 |
the evaluation of any children who present with vir-
0 G, }! h: L( f. \ilization or peripheral precocious puberty. The diag-
/ ]$ c3 ~+ J; h+ j4 hnosis can be established by just a few tests and by# o h7 A" U* \* H
appropriate history. The inability to obtain such a
' |8 e3 P# y) Q# }2 G6 shistory, or failure to ask the specific questions, may0 @+ w5 F' M3 Z2 P# S
result in extensive, unnecessary, and expensive3 y# K3 @, ?# X; g) {' X/ g+ N
investigation. The primary care physician should be" z0 P5 p0 b5 j, n6 q
aware of this fact, because most of these children
4 t8 a' A$ v: u$ m# L4 Smay initially present in their practice. The Physicians’
' P4 o% O3 I8 _0 i, y/ E1 b8 B' c! zDesk Reference and package insert should also put a
9 m2 ^; _- v" _, swarning about the virilizing effect on a male or
: T- Q0 J1 B7 K z# `female child who might come in contact with some-
, h$ P6 w+ ^( g2 r( d/ Done using any of these products.
- U2 v8 H( ]2 m! ?+ ZReferences6 y* a2 d" x4 f0 f
1. Styne DM. The testes: disorder of sexual differentiation
( Z. s' {, A( ]% Rand puberty in the male. In: Sperling MA, ed. Pediatric
1 m. P8 X1 P4 r& {3 aEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
5 ]0 @; |6 A/ I2002: 565-628.
4 j$ K! z$ F& g0 @7 u, M2 h2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
. `! z8 r. W% h3 n# _1 spuberty in children with tumours of the suprasellar pineal7 R% x& ~5 Z8 {8 N( R' P
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
4 T/ r$ \: d' B$ DTopical Testosterone Exposure / Bhowmick et al 543
! ?; n, s, n- L/ Y: Bareas: organic central precocious puberty. Acta Paediatr.# V8 |9 U' s1 C/ c. U4 `. ?& n
2001;90:751-756.
5 E4 ^5 W7 [ [% C T3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
5 l; p5 o* Z+ Z& H& ~5 x- L9 DPediatric Endocrinology. 4th ed. New York, NY: Marcel
9 d/ E E% J) u. R5 x( |0 g3 sDekker Inc; 2003:211-238.0 G3 y) @ {8 _7 G9 j5 z4 W) [
4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual/ ]' w! R2 y8 I+ W
development in a two-year-old boy induced by topical
5 N" E3 p% b: S1 pexposure to testosterone. Pediatrics. 1999;104:e23.
2 K9 D# L+ |1 O& n5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
2 w" [- z$ r& l4 b R0 T# u* {- m3 OSkeletal Development of the Hand and Wrist. 2nd ed./ q7 S! z# }" }0 D3 R3 \# ?
Stanford, CA: Stanford University Press; 1959.
' k7 w l. _. d! ~- _3 H% Q6. Physicians’ Desk Reference. Androgel 1% testosterone,
; x d* p$ h, f8 f2 o9 M; `$ rUnimed Pharmaceutical Inc. Montvale, NJ: Medical$ f, K7 W2 C- @
Economics Company, Inc; 2004:3239-3241.% L% x6 ?' `, `6 v; d" a; n9 H
7. Klugo RC, Cerny JC. Response of micropenis to topical
5 @$ q. e8 t9 h* M3 j# Ltestosterone and gonadotropin. J Urol. 1978;119:
! ]5 [8 t9 O3 X5 a/ o+ D0 O667-668.
$ X' w1 l: \9 ^: k) d8. Guthrie RD, Smith DW, Graham CB. Testosterone" L$ H& O9 `/ a' I% L2 }4 j1 R0 _
treatment for micropenis during early childhood. J Pediatr.
3 X2 A1 k* ^! H! I( _1973;83:247-252.
* D q5 D% H, Q8 }9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone I- l6 n" q( h7 W
therapy for penile growth. Urol. 1975;6:708-710.
* ^9 m/ b) Z4 l5 E: g4 r10. Husmann DA, Cain MP. Microphallus: eventual phallic
/ J3 A# w, X) o' isize is dependent on the timing of androgen administra-5 ^! E0 w, u6 h3 a8 L# ?
tion. J Urol. 1994;152:734-739.
; c% ^% ?+ M5 i11. McMahon DR, Kramer SA, Husmann DA. Micropenis:* t& e: D9 ^5 W' M; [# e" V$ Z4 o+ Q
does early treatment with testosterone do more harm# S7 a% a, u7 K# |# O
than good? J Urol. 1995;154:825-829.
- o* {5 r- ~& {: i4 ^12. Takane KK, George FW, Wilson JD. Androgen receptor
4 Q' r( Z' V$ g' Cof rat penis is down-regulated by androgen. Am J Physiol.! E( m4 r+ ~, ~( Z' J
1990;258:E46-E50.
+ a/ S: b& |1 ?# @+ c13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect
8 I( D* Y. j/ Sof prepubertal androgen exposure on adult penile
+ P/ w1 S. L- z' v: glength. J Urol. 1996;156:783-787. |
|