- 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, s( ^$ i, g0 ^8 j
precocious puberty (CPP), which is mediated- {( B; Z' t- n8 h1 M/ q
through the hypothalamic pituitary gonadal axis, has
- a% Z# |6 m4 y+ ^ s* ma higher incidence of organic central nervous system
2 q# A% t4 X. ]0 t3 {lesions in boys.1,2 Virilization in boys, as manifested# V# f- e# I7 c2 t; e
by enlargement of the penis, development of pubic1 [( @! D: J" W
hair, and facial acne without enlargement of testi-
2 V0 }( }) f$ U& [4 o: `cles, suggests peripheral or pseudopuberty.1-3 We
7 h3 _0 v; T! @report a 16-month-old boy who presented with the: H1 N/ Y/ Q4 F+ C2 A
enlargement of the phallus and pubic hair develop-
2 @/ h7 v! n4 cment without testicular enlargement, which was due
( @, r2 m; { Y! H8 X! sto the unintentional exposure to androgen gel used by
F4 \6 |4 N& F" e; Y4 m3 Ythe father. The family initially concealed this infor-
& A- n* d- V/ q3 Z5 n2 Nmation, resulting in an extensive work-up for this+ e2 m. N+ [/ e8 z3 g+ q
child. Given the widespread and easy availability of
D4 C" d* T3 s9 `% g% a% ktestosterone gel and cream, we believe this is proba-0 X$ x3 S# d' X2 t
bly more common than the rare case report in the
" z9 b' a- c4 C, Q/ wliterature.4
. E( h1 O8 ~$ G4 KPatient Report- M r5 P- J8 X. L- Z- u
A 16-month-old white child was referred to the* q& Z/ Q# h% d5 {% X
endocrine clinic by his pediatrician with the concern& G6 @0 h$ A e- |: `
of early sexual development. His mother noticed
) L% @0 @* I# t& \ g: t* D' Ylight colored pubic hair development when he was
) Y5 ^" w0 o4 V a/ I, i6 AFrom the 1Division of Pediatric Endocrinology, 2University of' K* s/ A# N. c7 Y2 r* V# O- ?# V) G
South Alabama Medical Center, Mobile, Alabama.. h& L; s, L/ T* z' q I
Address correspondence to: Samar K. Bhowmick, MD, FACE,
& A Q, v3 l0 W: J* F, wProfessor of Pediatrics, University of South Alabama, College of( ~% u7 ^1 m6 m9 F/ T9 t0 V9 P
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
2 l3 f2 q3 ^/ M) oe-mail: [email protected].
' w3 I* l! Z+ kabout 6 to 7 months old, which progressively became
! l, x8 t5 `# e; F, O2 {4 ^6 V* j1 idarker. She was also concerned about the enlarge-
7 y+ _; H3 Y0 d$ l% ?3 vment of his penis and frequent erections. The child& ~. H9 R0 g3 I" z( L/ S. k( O7 C
was the product of a full-term normal delivery, with
; w: X7 {; {% g* j$ pa birth weight of 7 lb 14 oz, and birth length of
# n6 d- ]8 [- A5 J20 inches. He was breast-fed throughout the first year+ S0 d$ }6 Y# y( e8 f- I f# V
of life and was still receiving breast milk along with
4 e4 c. o$ I; D, x/ s8 e; l7 Hsolid food. He had no hospitalizations or surgery,
! C/ x- a, ^9 N4 h. L" o aand his psychosocial and psychomotor development
" I: y, B( v( j9 G$ Q* Bwas age appropriate.( ]8 O/ n. n/ O4 q
The family history was remarkable for the father,2 T4 z( w9 l# I* r; r
who was diagnosed with hypothyroidism at age 16,! {/ g" U: P( q2 R+ s1 Q
which was treated with thyroxine. The father’s
( x$ R. O' G( N; X9 V+ v0 `height was 6 feet, and he went through a somewhat
" I/ P: e+ B( }/ searly puberty and had stopped growing by age 14./ m$ v6 P$ G9 Y3 k5 }+ _
The father denied taking any other medication. The3 _- m* L2 J8 |6 r
child’s mother was in good health. Her menarche! I3 V3 M) I2 s, H# {# k) a
was at 11 years of age, and her height was at 5 feet9 t8 V7 g9 c8 E9 h. o
5 inches. There was no other family history of pre-4 [; f3 Q8 t* @$ q L6 E' `; S3 ]
cocious sexual development in the first-degree rela-
' q8 Z3 M- u+ }* t; p* M2 ~6 A; btives. There were no siblings.0 ^4 k+ Q8 G' ^6 w: ?/ Q
Physical Examination1 V: E) Y' @7 l' J
The physical examination revealed a very active,& \; m4 n h J$ a7 c1 l
playful, and healthy boy. The vital signs documented
1 y2 {3 Y& I& Ya blood pressure of 85/50 mm Hg, his length was
0 a) H: Y; L, `/ D2 X. u9 G90 cm (>97th percentile), and his weight was 14.4 kg i) b2 e/ z/ v
(also >97th percentile). The observed yearly growth: s8 x$ q% r. G, F2 ]. ]6 R
velocity was 30 cm (12 inches). The examination of' d8 S( ^. d: G+ U8 e% V: F
the neck revealed no thyroid enlargement.4 V# ?+ r4 B; G2 ?! {; Q" p
The genitourinary examination was remarkable for
7 f5 i1 s% K0 T" @% W( l0 _* jenlargement of the penis, with a stretched length of
{! \" |' L9 `0 \8 f8 cm and a width of 2 cm. The glans penis was very well0 x1 V8 H( [6 M+ K
developed. The pubic hair was Tanner II, mostly around5 b0 w# U' h% {7 v5 t3 w! `. t
540
& ~4 }, l# f) @9 pat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
; H! ]8 p- Q. L5 T0 |the base of the phallus and was dark and curled. The
( o" [( b' v0 P- W. Ptesticular volume was prepubertal at 2 mL each.
" T+ Z7 J' H5 \2 j3 `The skin was moist and smooth and somewhat
i' B9 C$ L" k; F a6 b6 `4 f. roily. No axillary hair was noted. There were no
6 n- }( \! n" `7 ?8 F4 e5 Qabnormal skin pigmentations or café-au-lait spots.7 v3 e; M6 L, d* d* {. Y* W
Neurologic evaluation showed deep tendon reflex 2+' w0 c) g& `' ^1 {9 `
bilateral and symmetrical. There was no suggestion
( @2 x W5 [9 u$ Kof papilledema.- }* K6 \0 d; [1 e, I& C. L6 E
Laboratory Evaluation
' x8 k4 a9 ]- U# E- aThe bone age was consistent with 28 months by
: }/ Z6 |" \9 x6 pusing the standard of Greulich and Pyle at a chrono-0 k0 D4 x8 ?" w* g6 ?5 j* r
logic age of 16 months (advanced).5 Chromosomal: u4 [1 l0 Z% {0 c3 l% Q( m
karyotype was 46XY. The thyroid function test
/ N1 k& |8 Q9 X! n+ v7 zshowed a free T4 of 1.69 ng/dL, and thyroid stimu-
& |! X; m, R5 |, Y' m) b0 rlating hormone level was 1.3 µIU/mL (both normal).- d0 A, y! }7 V0 a
The concentrations of serum electrolytes, blood
' F3 L4 P' z* r& z7 g- r3 k5 lurea nitrogen, creatinine, and calcium all were
; w9 J ^- W# l; W0 i4 hwithin normal range for his age. The concentration
1 s z; `8 k" E. fof serum 17-hydroxyprogesterone was 16 ng/dL
4 {( X0 {7 \1 _" L0 W# b" H(normal, 3 to 90 ng/dL), androstenedione was 20
3 h5 v3 b& }3 V- R' G6 xng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-1 V+ q/ x. L- m% e. u @% j# ~4 f
terone was 38 ng/dL (normal, 50 to 760 ng/dL),! z: [. N; o) O& o \% k# f
desoxycorticosterone was 4.3 ng/dL (normal, 7 to8 ?% Y3 w: x9 F- h
49ng/dL), 11-desoxycortisol (specific compound S)- k0 @% U0 ~' Y
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-# q2 n" p) P. Q+ L
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total2 I+ v8 D$ V7 q) }; ]6 z
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),, e; J3 [4 ^; C T w
and β-human chorionic gonadotropin was less than" X- P( r. j; ?. B. \
5 mIU/mL (normal <5 mIU/mL). Serum follicular( f$ ^7 V5 j) v$ y+ f( O
stimulating hormone and leuteinizing hormone5 k9 n0 Y7 H5 W$ `* Y
concentrations were less than 0.05 mIU/mL
7 a( L1 p; [$ B' i5 k. e(prepubertal).
4 ^$ U- ~' i* p2 I! V" bThe parents were notified about the laboratory! n1 L8 L: O! O3 P. f5 U
results and were informed that all of the tests were
8 ]3 z4 v( x/ @; P3 O- j/ ?, Knormal except the testosterone level was high. The) o4 {8 y+ E+ Q9 }6 A: w
follow-up visit was arranged within a few weeks to
) L x" V! M0 S/ gobtain testicular and abdominal sonograms; how-, b5 A# x. f4 l" l- y
ever, the family did not return for 4 months.: p" c% z) y% `% p/ d! L R
Physical examination at this time revealed that the
" ~2 t3 s/ U( mchild had grown 2.5 cm in 4 months and had gained
x* `$ j2 T! v0 S) o/ m2 kg of weight. Physical examination remained
2 A" v! L: l# D. _9 tunchanged. Surprisingly, the pubic hair almost com-
- _2 N8 X3 T, X7 t" p; Q# I& Upletely disappeared except for a few vellous hairs at1 p8 V2 I' A2 d; b
the base of the phallus. Testicular volume was still 2
9 ~( x- C0 g* r8 KmL, and the size of the penis remained unchanged.* O: f2 X, Z, G6 N) a7 Q
The mother also said that the boy was no longer hav-
) A; u F8 V6 V( A8 `: x, Cing frequent erections.
9 @3 Q9 Q& [; vBoth parents were again questioned about use of' s! b I) D7 c" R) {
any ointment/creams that they may have applied to9 e- {* i1 m. O# _' g
the child’s skin. This time the father admitted the
: y) W" x7 Y. ~$ OTopical Testosterone Exposure / Bhowmick et al 541
" A( R8 v: ~4 G$ m Z quse of testosterone gel twice daily that he was apply-
8 G$ T7 p( ?5 y7 g4 `ing over his own shoulders, chest, and back area for4 v5 h5 E$ U5 u+ }4 h4 H* L
a year. The father also revealed he was embarrassed
8 A7 U* M( t% A3 M- H/ @0 Vto disclose that he was using a testosterone gel pre-
. E" M7 U5 p% d: M9 d+ M) ?scribed by his family physician for decreased libido
! G# q* Y2 _8 |2 R/ ^- J! Wsecondary to depression.7 f( H& I. t7 O( M/ u6 j
The child slept in the same bed with parents.) A, s- j( V9 D6 A I
The father would hug the baby and hold him on his( T1 o. d5 k) R
chest for a considerable period of time, causing sig-: ^, \3 l0 b8 g$ R, g$ i) \2 I; v
nificant bare skin contact between baby and father.
& f/ o2 z6 V# O tThe father also admitted that after the phone call,
' M. I8 D) a0 [) }- Jwhen he learned the testosterone level in the baby
; }+ E- p. {& _% w9 k. H' C9 o5 \8 |was high, he then read the product information, e- p2 @" \! O4 Z
packet and concluded that it was most likely the rea-
4 i F- x- t; M, M' x* F% }son for the child’s virilization. At that time, they
5 p4 s; l8 H" ?! @& I; q2 Idecided to put the baby in a separate bed, and the
7 U3 n x6 b0 b. @father was not hugging him with bare skin and had
: N1 t4 c# z% U# j& a! X' Wbeen using protective clothing. A repeat testosterone
- ]0 V9 N+ q* L- `5 Atest was ordered, but the family did not go to the3 @4 r9 T2 a: b/ a
laboratory to obtain the test.
, [1 x, p! Z) H( z$ wDiscussion
- u0 d+ l0 i4 p4 l" W# uPrecocious puberty in boys is defined as secondary
( Z, d7 l V% {/ C' ]8 S) asexual development before 9 years of age.1,4
5 Y; N5 F3 D, ?5 K( m( A0 b# C, ^' EPrecocious puberty is termed as central (true) when5 l6 Y" X4 J! C6 ]) h. m! Q
it is caused by the premature activation of hypo-0 H9 n- I# n+ I0 K: \) S
thalamic pituitary gonadal axis. CPP is more com-
9 S; d6 O/ t" Z$ V( {2 m xmon in girls than in boys.1,3 Most boys with CPP
9 ^& A6 t% } S, ? v! V9 g# gmay have a central nervous system lesion that is
* f: ~# A; i0 k0 Gresponsible for the early activation of the hypothal-
. @5 f# `* O' H) B( _& n8 {amic pituitary gonadal axis.1-3 Thus, greater empha-
/ }* v- y7 N" r1 ]* e6 @7 q$ A. xsis has been given to neuroradiologic imaging in
& W6 d7 T! X5 \2 A7 K, n2 n4 Qboys with precocious puberty. In addition to viril-
+ L/ `$ Y0 b: [2 ]8 |- v7 a! j: V6 Mization, the clinical hallmark of CPP is the symmet-
$ }2 e0 _- X/ |. p6 h0 v. Qrical testicular growth secondary to stimulation by% C. r7 Z( @% c0 R/ o- k1 u
gonadotropins.1,3
. x6 ` @4 X' u6 y# |Gonadotropin-independent peripheral preco-
5 [( w/ r" v+ X9 d8 v4 zcious puberty in boys also results from inappropriate1 _$ Z$ v. ]; ]! j) A3 A6 F9 V; P! S% X
androgenic stimulation from either endogenous or
0 T) O$ T s" q' V2 `5 ~1 U' U' }exogenous sources, nonpituitary gonadotropin stim-3 Q W* h4 m7 l% _, e' j/ @
ulation, and rare activating mutations.3 Virilizing: T' ?$ f7 B; O0 W
congenital adrenal hyperplasia producing excessive" _; B: q3 g( b+ g1 c! S6 k3 [3 }
adrenal androgens is a common cause of precocious
+ Z! S# A$ Z) r& W- z% p& |# ~/ V9 ppuberty in boys.3,4
8 N( l; A% W- h! r( RThe most common form of congenital adrenal
+ T9 {3 d' G0 c6 M$ |: w7 E |8 whyperplasia is the 21-hydroxylase enzyme deficiency.
) N7 C8 l( [+ H9 ~- K; B4 i! ZThe 11-β hydroxylase deficiency may also result in0 F# j2 g Y) r; h1 c
excessive adrenal androgen production, and rarely,
7 r0 k% O4 c1 y) z8 o) [an adrenal tumor may also cause adrenal androgen
' `3 n3 |; _8 mexcess.1,3
, l3 r* B+ H* q z, v; V5 x: dat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
% p# w, c5 l7 r6 G) i2 F542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
+ o6 x" ^1 d7 r+ J% KA unique entity of male-limited gonadotropin-
9 t" l: {6 l7 |% D; U5 v" Qindependent precocious puberty, which is also known
' E1 K! U/ S* V1 |as testotoxicosis, may cause precocious puberty at a G. I# x y9 G: [& p5 b: i
very young age. The physical findings in these boys( U: l3 F( |4 M z2 I3 e# ]
with this disorder are full pubertal development,0 `4 k* K" l- k5 h+ w$ A
including bilateral testicular growth, similar to boys
5 A! q8 C$ O% B9 g; swith CPP. The gonadotropin levels in this disorder
0 b4 E5 k E# m$ D+ h6 iare suppressed to prepubertal levels and do not show" `) E+ H0 T9 ]& c9 J
pubertal response of gonadotropin after gonadotropin-
% ~1 n; u3 v' o' F6 [& Lreleasing hormone stimulation. This is a sex-linked; F' J# M% |/ ]* g, H
autosomal dominant disorder that affects only7 \- e% j) e* ?2 F6 m
males; therefore, other male members of the family
6 p. ~& I/ U. s% {5 o6 ~may have similar precocious puberty.3
/ ?% e: ~7 v; m2 _" S$ [9 u" hIn our patient, physical examination was incon-
! Q. J) e7 i% k2 xsistent with true precocious puberty since his testi-, r6 M: T5 t3 q( @
cles were prepubertal in size. However, testotoxicosis r; G$ ~. b# m
was in the differential diagnosis because his father
! n- O; Z# N: t3 z( r- Kstarted puberty somewhat early, and occasionally,$ J( v9 F$ }' C7 b( v2 J# A! b$ `
testicular enlargement is not that evident in the
' A6 ~0 D/ q: q* e0 S7 obeginning of this process.1 In the absence of a neg-; m# N, U% G, e h
ative initial history of androgen exposure, our/ P) d% T( L* O$ ]: f; h8 u
biggest concern was virilizing adrenal hyperplasia,* S8 @/ H5 S3 S6 k/ Z
either 21-hydroxylase deficiency or 11-β hydroxylase
0 B) k! s) D" R$ ~: \deficiency. Those diagnoses were excluded by find-5 \6 Z, k9 C: D: l7 I0 f/ Z
ing the normal level of adrenal steroids., x% r- H7 a$ d9 e9 w. u4 g- J
The diagnosis of exogenous androgens was strongly
& w% C0 k7 b/ ?" Asuspected in a follow-up visit after 4 months because
9 r/ T7 Q' D. W9 N9 }0 ythe physical examination revealed the complete disap-2 g# e# {# N+ y$ X* u, _
pearance of pubic hair, normal growth velocity, and1 r ?# W8 S* C0 R. G1 q
decreased erections. The father admitted using a testos-
/ k/ h( Q" ]) j* z. B. \9 l: Aterone gel, which he concealed at first visit. He was
) m! B# O& ], }. y5 y% \8 t) o( Ausing it rather frequently, twice a day. The Physicians’
, F; a1 O K$ w1 e- H' RDesk Reference, or package insert of this product, gel or6 ^/ E# `* ?3 P
cream, cautions about dermal testosterone transfer to' G' k* K. o; f4 B( K( ~% x
unprotected females through direct skin exposure.
8 G# a! C4 `7 S7 J2 c( XSerum testosterone level was found to be 2 times the9 W9 q, {0 T: v, T/ O
baseline value in those females who were exposed to
6 i6 K, n1 a! F+ I( { c; ~7 j7 ^5 f2 Yeven 15 minutes of direct skin contact with their male! {) q* D) C9 e
partners.6 However, when a shirt covered the applica-
1 p" Y) T1 F. o! g9 Ztion site, this testosterone transfer was prevented.$ D$ C# z9 Y) n
Our patient’s testosterone level was 60 ng/mL,
. z' W+ _! G+ S) dwhich was clearly high. Some studies suggest that& B9 a2 b/ i( s6 a2 P6 i$ y; J/ I
dermal conversion of testosterone to dihydrotestos-1 ~3 x7 _4 ~- }! {3 S; `
terone, which is a more potent metabolite, is more# n& b) Q$ B) ]) ^* N! v9 f
active in young children exposed to testosterone4 c5 e! U- [! ?) Y D6 ?
exogenously7; however, we did not measure a dihy-( R) L. G& l9 r
drotestosterone level in our patient. In addition to
& Q1 L( D4 |+ ?' F% ^/ bvirilization, exposure to exogenous testosterone in
+ f) S. _/ q2 {. jchildren results in an increase in growth velocity and$ ~9 V u `9 i5 Y( s% p4 X
advanced bone age, as seen in our patient.
* Q8 [6 N# d+ g: rThe long-term effect of androgen exposure during0 t( o a: E! u! G. i: ` C4 V0 n
early childhood on pubertal development and final
. G/ l5 p- y: k. z& r9 Nadult height are not fully known and always remain: C' o" F* ]3 ~- J$ L
a concern. Children treated with short-term testos-
$ U/ L2 o9 l' ]. b; M& O% dterone injection or topical androgen may exhibit some: a v r( L0 X
acceleration of the skeletal maturation; however, after
) N9 a9 b+ [. i% ?7 p( `cessation of treatment, the rate of bone maturation
1 O: q u+ X7 ^4 R ]; bdecelerates and gradually returns to normal.8,9% H# Z- _1 k0 `1 W0 g5 ~
There are conflicting reports and controversy
/ s8 |7 \: K& h8 G9 sover the effect of early androgen exposure on adult
+ r$ D3 B- Y" i+ F! z3 Dpenile length.10,11 Some reports suggest subnormal
% W7 G+ w& \' n6 `adult penile length, apparently because of downreg-
) u* o- Y0 g9 r# E7 t6 {$ w* lulation of androgen receptor number.10,12 However,5 _' Y1 h7 d) s8 z, I8 ] O
Sutherland et al13 did not find a correlation between
2 g& s! G- I Q4 e9 Z! N0 ]- tchildhood testosterone exposure and reduced adult
" h/ C9 k7 ~# p1 cpenile length in clinical studies.
! n5 ^+ S1 [% q/ \1 }) UNonetheless, we do not believe our patient is9 }4 m" ~6 x; S2 S" p2 @
going to experience any of the untoward effects from
7 F7 P2 r4 K4 g3 {7 n1 I6 ptestosterone exposure as mentioned earlier because8 F( Y$ f/ q9 G( _, `0 t; O
the exposure was not for a prolonged period of time.
% K7 _: s' P, C/ i& ~9 q0 kAlthough the bone age was advanced at the time of2 w8 y% m& B/ X: t% m
diagnosis, the child had a normal growth velocity at( B. A( K% ^' m) Z* C- Z
the follow-up visit. It is hoped that his final adult! U: C; T1 O; d+ K
height will not be affected.
) U9 z3 f# X6 r( @7 f$ o* |Although rarely reported, the widespread avail-/ V+ _: x, H2 T) n. b2 b
ability of androgen products in our society may
+ @, }7 O V# u' Findeed cause more virilization in male or female+ p, U6 ?- s: z7 q+ u3 z
children than one would realize. Exposure to andro-
. M: A* V( f; U' m; r6 `! xgen products must be considered and specific ques-
: f0 P5 X& }4 ^4 Ltioning about the use of a testosterone product or
' }9 y& d v6 B$ N, ]5 kgel should be asked of the family members during w @* c6 i! G9 @
the evaluation of any children who present with vir-* H* }5 h; d6 u0 u6 U2 W' i# N
ilization or peripheral precocious puberty. The diag-
) ^) l; n/ J8 R8 b5 H& dnosis can be established by just a few tests and by
8 B/ l2 x3 u& A8 j& a/ O1 C( dappropriate history. The inability to obtain such a* O& O4 z( Z' u6 @4 q2 C8 E& s
history, or failure to ask the specific questions, may
. T) g8 B v7 w) V' u2 Uresult in extensive, unnecessary, and expensive
: f: i/ I2 r' ?4 [9 Einvestigation. The primary care physician should be% u: D: r' d/ x2 ]1 u6 R
aware of this fact, because most of these children! I4 s! l- I4 o! T
may initially present in their practice. The Physicians’
" x$ a& a) A' P# xDesk Reference and package insert should also put a
- @, h8 y8 W4 ewarning about the virilizing effect on a male or" ]8 r+ \: F$ @ p2 T; T# ]) q
female child who might come in contact with some-4 c: r" {5 Z! e5 B: c
one using any of these products.
& ]. R, [ E- JReferences
* ^7 m- p0 ^& W: `1. Styne DM. The testes: disorder of sexual differentiation
- F" [. q8 K R% [( A4 W9 A# Band puberty in the male. In: Sperling MA, ed. Pediatric
) L& z* C# v+ m0 l+ H0 ~: Y0 DEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;. Y" @) K" E. V+ W& O) ]
2002: 565-628.- B- X K1 U1 K# [& J( B3 G5 ?
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
3 d5 d. A& U7 B) [! L. e fpuberty in children with tumours of the suprasellar pineal7 R# O* ^! i t- D
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from* ?- d6 W& A( e9 D
Topical Testosterone Exposure / Bhowmick et al 543
. }8 u- R$ f" c9 ?3 V4 _areas: organic central precocious puberty. Acta Paediatr.
* d1 X( O. U# p2001;90:751-756.
! _; ]" [4 y# V1 ?3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
5 n" j/ O5 b9 SPediatric Endocrinology. 4th ed. New York, NY: Marcel! c9 b* j$ ~ y: z9 W) R0 `$ @
Dekker Inc; 2003:211-238.' |) w9 P+ D" b
4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
* x/ M6 A1 `& [' I* h4 U8 w8 q& Xdevelopment in a two-year-old boy induced by topical
l. @# B- }4 k* e" k5 \exposure to testosterone. Pediatrics. 1999;104:e23.. J9 V+ ^5 Q: {; D- j$ n
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
: c: y0 l) ]9 `: Q8 n5 m6 XSkeletal Development of the Hand and Wrist. 2nd ed.
5 F0 @4 l6 j' E2 SStanford, CA: Stanford University Press; 1959.
* r' j" z& V! h& \9 P6. Physicians’ Desk Reference. Androgel 1% testosterone,4 i6 W/ S" l$ w H5 b6 S6 m
Unimed Pharmaceutical Inc. Montvale, NJ: Medical! c: V; t, y* |
Economics Company, Inc; 2004:3239-3241.
2 w4 H1 L+ u6 K7 c9 l8 B7. Klugo RC, Cerny JC. Response of micropenis to topical
( f! W3 h8 Q9 w! i$ I! _- x7 J5 h# ctestosterone and gonadotropin. J Urol. 1978;119:
- ^. i& |( R1 B; A$ J( U% v667-668.
( S9 ?5 I( ~; ?5 |8. Guthrie RD, Smith DW, Graham CB. Testosterone$ L5 ~( n" ]' w$ `- G) e
treatment for micropenis during early childhood. J Pediatr.: b# A/ l. y3 V
1973;83:247-252.
$ _) Q5 D; G- R. y+ J$ a# p; u9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone( m6 E7 u8 k2 x7 J5 _9 r8 D
therapy for penile growth. Urol. 1975;6:708-710.
, L; Z5 E+ V) |" o1 z10. Husmann DA, Cain MP. Microphallus: eventual phallic
5 C% L8 A+ q4 A( o+ Q, V: Xsize is dependent on the timing of androgen administra-. ~3 H! X" \3 S* |2 V8 y
tion. J Urol. 1994;152:734-739.
7 i1 g" M6 x" @11. McMahon DR, Kramer SA, Husmann DA. Micropenis:! {4 k G, X0 S+ w
does early treatment with testosterone do more harm4 m4 H2 L( M4 O
than good? J Urol. 1995;154:825-829., O( S' b6 A0 w- E+ O# k6 J) x
12. Takane KK, George FW, Wilson JD. Androgen receptor. _/ U0 G2 I" L% J) J
of rat penis is down-regulated by androgen. Am J Physiol.
6 X9 O9 \1 V5 g2 |" P0 j' S1990;258:E46-E50.5 p) t: U* ^9 y5 i ?5 f' {
13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect
3 k S1 L, ]) p$ @' {9 eof prepubertal androgen exposure on adult penile
. u+ S4 }1 I& ]1 _) }0 y) v: k, clength. J Urol. 1996;156:783-787. |
|