- 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/ f& d& o0 {! W% m
precocious puberty (CPP), which is mediated% a3 c. t4 a5 x% Q) p
through the hypothalamic pituitary gonadal axis, has- f/ w$ K" n# b% \7 M2 e
a higher incidence of organic central nervous system
1 P5 n) ~& ]/ ulesions in boys.1,2 Virilization in boys, as manifested+ U! g2 V" g# A* y! I9 m$ M
by enlargement of the penis, development of pubic
* B" J! m2 Y& G! _ w5 Shair, and facial acne without enlargement of testi-% g% m: N6 ]# g% T
cles, suggests peripheral or pseudopuberty.1-3 We- @* L u2 H* J5 K) m2 I/ b, _; O
report a 16-month-old boy who presented with the
2 y# f2 d7 g" Z* jenlargement of the phallus and pubic hair develop-
; T0 E" e! O+ q( U: s r3 j Tment without testicular enlargement, which was due: m. j7 I" T. c: S' Q( e
to the unintentional exposure to androgen gel used by: a$ c4 n+ q+ Y9 N. r' h" }3 G1 c
the father. The family initially concealed this infor-# E% R% V, |8 A2 u r; k' ^
mation, resulting in an extensive work-up for this6 K7 s2 C, n) [0 d q
child. Given the widespread and easy availability of
7 K, s! u1 Q ^1 X0 \# L. l( Stestosterone gel and cream, we believe this is proba-0 B1 K$ l& O* C& @0 e- S0 A
bly more common than the rare case report in the
2 K- e# F" D0 f; Xliterature.44 N) t5 } f" ^+ y( _, @; J
Patient Report
; M& j. m1 [5 `/ v. jA 16-month-old white child was referred to the' }: o. N- d- U, E
endocrine clinic by his pediatrician with the concern v* Z4 o' R' l
of early sexual development. His mother noticed
8 u& t& \8 T- |. G8 `$ F" l- Rlight colored pubic hair development when he was
2 j/ t: `* W8 V! Q* c( mFrom the 1Division of Pediatric Endocrinology, 2University of
( r5 Q8 V0 j/ t: uSouth Alabama Medical Center, Mobile, Alabama.; x; @# S8 b/ ]1 B
Address correspondence to: Samar K. Bhowmick, MD, FACE,
6 S' U. ~8 k( e7 [: C% j& W, |8 XProfessor of Pediatrics, University of South Alabama, College of# S, E2 k6 Q; V# e& f
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;5 M5 L: |3 B3 v5 s
e-mail: [email protected].0 t: O# k- O3 B
about 6 to 7 months old, which progressively became
# s" k" U+ H3 J! y3 \/ h: Ddarker. She was also concerned about the enlarge-
9 O1 J8 e0 s: E9 E# E( P" wment of his penis and frequent erections. The child E" I A8 x8 c* t/ H! `, b: Q
was the product of a full-term normal delivery, with& K( c7 M, g' a2 c9 k& N. g
a birth weight of 7 lb 14 oz, and birth length of' d3 x$ Y8 k3 S9 M$ y+ q, L, y
20 inches. He was breast-fed throughout the first year/ g4 w% A' ~# I
of life and was still receiving breast milk along with$ T! W- V1 N7 U, `3 z/ r V1 G) U
solid food. He had no hospitalizations or surgery,% Q# T5 |$ i. ?; O2 t; u
and his psychosocial and psychomotor development& ?" m, R4 K+ u8 Q0 D7 g1 ?
was age appropriate.& R& h5 ^! O8 s( n
The family history was remarkable for the father,; u! j& b! v' t8 j
who was diagnosed with hypothyroidism at age 16,
+ Q+ `! U0 w/ T1 a, C1 owhich was treated with thyroxine. The father’s, J2 p' ^) B4 A, O x4 i6 \
height was 6 feet, and he went through a somewhat; P& w8 t& M! ^. L/ J3 N J5 ~
early puberty and had stopped growing by age 14.& a: D% ^# L* ~0 L
The father denied taking any other medication. The
; Q1 y- N6 i& l9 N7 `9 vchild’s mother was in good health. Her menarche
R. H1 l2 l7 f1 P+ E7 v' Twas at 11 years of age, and her height was at 5 feet+ _0 q; T. p5 }/ N$ X
5 inches. There was no other family history of pre-% C4 @2 c T; ^
cocious sexual development in the first-degree rela-
8 h+ E% \* B# ^! d2 @tives. There were no siblings.
9 ~: p" a: A0 K3 S' BPhysical Examination5 |) J1 ]; v, { G% q
The physical examination revealed a very active,
0 E9 Y W) l# T$ U$ \4 Gplayful, and healthy boy. The vital signs documented
, L- P! g: X1 ra blood pressure of 85/50 mm Hg, his length was
/ C5 j- M6 [- a& ~90 cm (>97th percentile), and his weight was 14.4 kg
; P! {" b/ o' x3 C2 t Y(also >97th percentile). The observed yearly growth
& u/ N! T9 r4 m/ z" L. e B7 Ivelocity was 30 cm (12 inches). The examination of
: S( [; |: s) }) D+ ~the neck revealed no thyroid enlargement.3 j# C1 F# S1 }+ g8 h; @
The genitourinary examination was remarkable for" i* T7 w& F s# |
enlargement of the penis, with a stretched length of
y T1 O6 J/ U, x3 D8 t/ ?9 ]8 cm and a width of 2 cm. The glans penis was very well
; P1 P# }. y3 U% hdeveloped. The pubic hair was Tanner II, mostly around
* a4 J8 T9 E0 d4 R- T' n. p, v540
& k- Y8 W+ m: @ \) jat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from9 B3 _0 [3 |+ r# m
the base of the phallus and was dark and curled. The, X# U a+ @" f' O+ U5 O# i
testicular volume was prepubertal at 2 mL each.% v3 G# k9 B4 I8 p* t
The skin was moist and smooth and somewhat' V1 |0 o5 N: ~6 a/ Z3 {1 I
oily. No axillary hair was noted. There were no1 D9 R6 r: G* X) P: ^
abnormal skin pigmentations or café-au-lait spots.
; D) _5 f/ A" K7 ~2 cNeurologic evaluation showed deep tendon reflex 2+, Z+ c, J3 f4 t- d
bilateral and symmetrical. There was no suggestion
~- o4 C$ ?' V a* { M* H/ eof papilledema.
% ^+ b& D; S6 l1 I: o* B2 }Laboratory Evaluation
6 W* O& H Z: D% Q" H7 J/ ~The bone age was consistent with 28 months by6 ]6 z, T6 P0 X# m+ T
using the standard of Greulich and Pyle at a chrono-
. g' K' X1 M. j9 H; U3 o# nlogic age of 16 months (advanced).5 Chromosomal
& E" z/ x" y$ Y# K. w% `7 ^karyotype was 46XY. The thyroid function test
( n+ c, s# e4 @9 Lshowed a free T4 of 1.69 ng/dL, and thyroid stimu-
% x; h, D8 ?% c! Z$ Clating hormone level was 1.3 µIU/mL (both normal).
& ^7 ~1 E# B# U! a5 \The concentrations of serum electrolytes, blood
" h1 N4 O, Y7 z" c+ d7 Durea nitrogen, creatinine, and calcium all were4 |1 F# i7 M y& Z# n1 k
within normal range for his age. The concentration U" C$ ~: }/ V! M9 N+ E/ O% q
of serum 17-hydroxyprogesterone was 16 ng/dL a, C- B5 p' c! [# z- F& ^
(normal, 3 to 90 ng/dL), androstenedione was 20& Y' e* d/ u% ^) `" r+ J
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-. ~+ y% O% G, j$ r- W
terone was 38 ng/dL (normal, 50 to 760 ng/dL),
# n+ I- I& l8 C8 U( Rdesoxycorticosterone was 4.3 ng/dL (normal, 7 to
$ T5 v) _& H/ `* q* h0 g9 Y49ng/dL), 11-desoxycortisol (specific compound S)8 t) m7 M& [# U |2 V
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
3 [8 T- T" u2 Y* Ctisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
) j2 p: u& I& Y! _testosterone was 60 ng/dL (normal <3 to 10 ng/dL),1 {; a8 i6 l! E8 @
and β-human chorionic gonadotropin was less than
& g3 \% ^2 u6 h4 R5 mIU/mL (normal <5 mIU/mL). Serum follicular
8 Z# U% t9 @, j' R. bstimulating hormone and leuteinizing hormone5 v3 a2 A, E1 ] x$ g
concentrations were less than 0.05 mIU/mL% v# a3 R! M' q+ p( G! K" _
(prepubertal).. Y& k# c/ z0 n/ N- P/ [
The parents were notified about the laboratory
0 O# _ i8 V9 a% f+ S0 Sresults and were informed that all of the tests were3 M% u+ g. d" n* `# ]$ x* `
normal except the testosterone level was high. The3 o" w2 [$ O2 m! R6 m$ r
follow-up visit was arranged within a few weeks to5 O4 B8 `. D. g6 C% C- r# H
obtain testicular and abdominal sonograms; how-
3 `3 T+ I( V5 z4 c0 Xever, the family did not return for 4 months.% v6 x" \3 x2 d# i: y6 ^
Physical examination at this time revealed that the4 J+ b' u! d( _( g
child had grown 2.5 cm in 4 months and had gained9 d# |+ E( x* s% T# i
2 kg of weight. Physical examination remained! e7 _5 f5 M* Y7 ?" S1 [
unchanged. Surprisingly, the pubic hair almost com-
- ?+ q2 r- y: }6 P wpletely disappeared except for a few vellous hairs at1 O, v" ~8 t5 C
the base of the phallus. Testicular volume was still 2
9 s/ l0 u" ?2 o+ E! T" t. smL, and the size of the penis remained unchanged.
) E% q' e0 H- `: |0 E: w$ GThe mother also said that the boy was no longer hav-$ f$ j1 E6 x, S! b( N
ing frequent erections.
, t0 C8 Y6 _5 c& n, K4 @Both parents were again questioned about use of4 O' u5 v6 K9 X& r6 F
any ointment/creams that they may have applied to
8 s( c1 T. f& r" p4 j+ B# nthe child’s skin. This time the father admitted the
# H" h' G% |9 ?) X1 F2 `7 @( WTopical Testosterone Exposure / Bhowmick et al 541
3 ]; \7 D9 N% X" e1 Vuse of testosterone gel twice daily that he was apply-
( k6 |* B( c" y% i+ sing over his own shoulders, chest, and back area for
: F) U6 [; u$ ?4 Pa year. The father also revealed he was embarrassed
" t7 i1 J8 O6 o. o" V3 vto disclose that he was using a testosterone gel pre-
/ o1 ^2 Z) z: D# [7 ]scribed by his family physician for decreased libido
; d( d- l3 H# z. J. ]3 Ssecondary to depression.1 i: l/ v# N- U* r
The child slept in the same bed with parents. }4 ?# g# O( V# D% E
The father would hug the baby and hold him on his# i4 o* e: D$ M% E" u
chest for a considerable period of time, causing sig-
$ H, b8 J5 x D& xnificant bare skin contact between baby and father.
. V# @8 [2 `# [; [* t, Y4 u& e. M! QThe father also admitted that after the phone call,4 e* x+ Q; s: K. x
when he learned the testosterone level in the baby8 s3 Q0 d, T) V& y( Z5 K# T
was high, he then read the product information
1 e p* k; ]: F- L$ h Tpacket and concluded that it was most likely the rea-% w; _# m0 y6 h! U& Q; [
son for the child’s virilization. At that time, they
8 l% d/ J2 @& W; rdecided to put the baby in a separate bed, and the% d0 \: A2 _0 L x4 j
father was not hugging him with bare skin and had
/ \5 g! \, S) d. P% l' X: N* ~/ wbeen using protective clothing. A repeat testosterone! k: v+ H2 x: \. h
test was ordered, but the family did not go to the1 p1 a" s6 S* O& d
laboratory to obtain the test.$ i! N3 k/ Q' P5 Z; E% S4 e
Discussion
' A6 m7 A( z- `! ], E+ VPrecocious puberty in boys is defined as secondary/ A1 Z4 L0 G3 b5 ~/ I
sexual development before 9 years of age.1,4" Z+ {7 }1 t+ Z9 \6 g
Precocious puberty is termed as central (true) when
1 t% l Q2 F+ D0 \& N& Lit is caused by the premature activation of hypo-+ W7 F/ ]! X* s/ y% q
thalamic pituitary gonadal axis. CPP is more com-
$ c: P% M9 |4 D# |3 J% x8 s7 j+ _; imon in girls than in boys.1,3 Most boys with CPP& E" O- z7 h$ Q5 n# h2 j2 m3 T/ X
may have a central nervous system lesion that is/ Z* K$ V1 S+ L, z/ a
responsible for the early activation of the hypothal-
/ u5 t) A2 w" I6 namic pituitary gonadal axis.1-3 Thus, greater empha-
8 U# C9 {3 a9 t+ j- e! m2 Gsis has been given to neuroradiologic imaging in) I$ a" @8 P. e6 e+ r
boys with precocious puberty. In addition to viril-
! v; |! A! O; E! g2 I8 m5 Vization, the clinical hallmark of CPP is the symmet-
! ^ Z7 R T5 [* |. y. Xrical testicular growth secondary to stimulation by
! Q0 F3 [, q9 z2 \3 h3 [gonadotropins.1,3
8 y3 ?; V" d( O4 E3 qGonadotropin-independent peripheral preco-
4 }, m3 `5 f5 o, `8 i( @0 Gcious puberty in boys also results from inappropriate+ \( }1 L7 H2 A$ n4 }% P' ]! \+ Y
androgenic stimulation from either endogenous or+ f. ]" F3 f& @- _
exogenous sources, nonpituitary gonadotropin stim-# R* U/ l6 ?& e) E( j& }* f
ulation, and rare activating mutations.3 Virilizing+ B! a# D& p2 m1 ~
congenital adrenal hyperplasia producing excessive
4 D- H5 }! N5 n! m, @adrenal androgens is a common cause of precocious
4 m2 u) a' `0 E7 e/ @5 H, dpuberty in boys.3,4
, l+ x2 }! Y+ v7 t( E/ X7 ~8 NThe most common form of congenital adrenal# ~( q+ D& _/ z _; W5 Q
hyperplasia is the 21-hydroxylase enzyme deficiency.
, m) t3 D+ N+ XThe 11-β hydroxylase deficiency may also result in8 c K& U4 V3 \+ h: ?2 q. `
excessive adrenal androgen production, and rarely,) a4 `+ p* ?2 C' Z3 N
an adrenal tumor may also cause adrenal androgen4 ?8 B) d) C$ @& X, l& c3 Y
excess.1,3
3 n3 l8 M9 ] c) Q5 Q, B+ Jat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
/ b0 ?9 S. Y! \/ S# r542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
' ~& F, c1 f9 n- \) PA unique entity of male-limited gonadotropin-7 _, K8 D: k4 s$ r, V
independent precocious puberty, which is also known" j% R: j V" `0 C) |4 p* p
as testotoxicosis, may cause precocious puberty at a3 d* c$ k d; n! B$ r" O2 ~
very young age. The physical findings in these boys
: [4 H( s+ c1 W/ J& iwith this disorder are full pubertal development,: e( u3 o( L% s0 R& ^
including bilateral testicular growth, similar to boys/ Z3 P2 V: j& l7 G+ L: H
with CPP. The gonadotropin levels in this disorder% T7 q# V# m* K6 ~8 E x) v6 _
are suppressed to prepubertal levels and do not show
" c+ Z9 u0 m2 V+ z: cpubertal response of gonadotropin after gonadotropin-3 `, R) i, F' ]% k+ K5 v# f N
releasing hormone stimulation. This is a sex-linked! \; d L0 G+ w4 _& y8 {
autosomal dominant disorder that affects only" x/ ]+ D3 ?9 ]. r
males; therefore, other male members of the family) ?6 F8 V( n+ x# g. k+ y
may have similar precocious puberty.3
& Y6 _: D( N" Y! I6 d; ZIn our patient, physical examination was incon-+ ^3 p+ ]/ `! M, B) Y3 a# b
sistent with true precocious puberty since his testi-
3 O; X9 q$ x2 S8 M6 ~+ icles were prepubertal in size. However, testotoxicosis0 @+ Z* B, P# G! e1 Z5 J7 L/ Y
was in the differential diagnosis because his father
7 a6 l, \6 v. b$ Bstarted puberty somewhat early, and occasionally,
" W" a$ F l3 }% G2 etesticular enlargement is not that evident in the
4 ~. K+ t% y& \4 h) ?: _beginning of this process.1 In the absence of a neg-/ Y' \# I! I$ O& ~( |( E7 j5 ^
ative initial history of androgen exposure, our
2 j, ~) y" N* P0 e& N- bbiggest concern was virilizing adrenal hyperplasia,$ A# X1 b1 A$ ?& I) M! H: u
either 21-hydroxylase deficiency or 11-β hydroxylase
8 c/ [5 z5 ?+ n0 y* M( _deficiency. Those diagnoses were excluded by find-. W* _, T+ s! W% u8 b8 Q
ing the normal level of adrenal steroids.. ?/ V$ _) {" |! |$ o$ E2 T" m
The diagnosis of exogenous androgens was strongly* b# O4 J/ R: k
suspected in a follow-up visit after 4 months because! {5 e6 D- q+ q9 [5 ~% m5 R( ?
the physical examination revealed the complete disap-
: `, m1 `! p! P% Y+ `4 Ypearance of pubic hair, normal growth velocity, and! j$ `; ]+ _& H' d
decreased erections. The father admitted using a testos-/ T" m/ m! C' H; l" B8 G4 z
terone gel, which he concealed at first visit. He was a8 S0 L+ w! n0 |) ~! T
using it rather frequently, twice a day. The Physicians’
& m- J" ~3 |% m0 { pDesk Reference, or package insert of this product, gel or
! y& V# I! x0 @. F$ ~7 X4 q) vcream, cautions about dermal testosterone transfer to
- k1 r+ ^+ D; L3 n: Q* yunprotected females through direct skin exposure.
% Z; }" \# |, L5 ISerum testosterone level was found to be 2 times the( C! F8 u7 h/ g2 y7 d
baseline value in those females who were exposed to6 r. Z ~/ W3 M% Y; g# R
even 15 minutes of direct skin contact with their male
% t e) m" ?3 k* u9 K0 \partners.6 However, when a shirt covered the applica-$ B9 r. ]: v/ R1 a+ Q: G
tion site, this testosterone transfer was prevented.+ r9 O N, Q9 W4 z r7 n/ B
Our patient’s testosterone level was 60 ng/mL,
, l5 k X3 Y* L6 a# ^: zwhich was clearly high. Some studies suggest that; i( t/ g' H; E8 E, Z9 P) _3 _6 \, E2 e. M
dermal conversion of testosterone to dihydrotestos-
8 I8 o5 T; P- ?; f2 h) L9 \terone, which is a more potent metabolite, is more- U# \: Z2 Y! I- ]0 Z
active in young children exposed to testosterone. s; u/ ?2 _9 ~ }/ M6 D
exogenously7; however, we did not measure a dihy-
0 y$ O& W) I D0 x- jdrotestosterone level in our patient. In addition to$ e$ m5 a( a9 J& Z( p7 X( Q9 k
virilization, exposure to exogenous testosterone in
3 x; Z2 l, W1 E- c/ K! c: B. Hchildren results in an increase in growth velocity and u' ^, @# l8 @7 M9 O8 f8 U
advanced bone age, as seen in our patient.
2 X% C+ G& d/ J3 h0 mThe long-term effect of androgen exposure during
7 f# J Z5 K+ c# o# ]2 T2 B+ b' Bearly childhood on pubertal development and final8 ?$ |* w. f6 M7 [4 D
adult height are not fully known and always remain9 a; X' z( ^) W- O- ~4 R% [7 I
a concern. Children treated with short-term testos-
& m7 ~) S5 J1 q5 Z& o/ ^terone injection or topical androgen may exhibit some
- F( O! ?! V1 V j+ r) f6 |- Cacceleration of the skeletal maturation; however, after$ Q3 q: m! s5 H* x7 Q- _) v' j
cessation of treatment, the rate of bone maturation$ D' ~) C* \2 f% F& K* w
decelerates and gradually returns to normal.8,94 ]! l+ L T0 B D3 ]0 {$ o
There are conflicting reports and controversy
; s4 J; c) v0 i8 ~9 N/ `over the effect of early androgen exposure on adult) B/ o1 \! u0 S, _
penile length.10,11 Some reports suggest subnormal% z$ L3 \2 g$ B7 O6 l
adult penile length, apparently because of downreg-3 ^* f, q0 y) k$ H, T; \5 A
ulation of androgen receptor number.10,12 However,4 T6 R5 Q8 k- n
Sutherland et al13 did not find a correlation between
! H6 A- i5 M4 t! mchildhood testosterone exposure and reduced adult+ y6 y% P, Z0 ?3 `
penile length in clinical studies.
: K5 B5 |1 V! N; D8 N* } ^6 Y9 iNonetheless, we do not believe our patient is
) [3 W7 P, s7 N/ ^6 S" Dgoing to experience any of the untoward effects from
2 g1 M. W( |6 j- o" Dtestosterone exposure as mentioned earlier because$ K4 Q. n% t8 l* l: T4 `8 {: X6 J; W
the exposure was not for a prolonged period of time.
- z" g1 k7 S' k. C W. Q; [8 F+ N2 `Although the bone age was advanced at the time of
' `0 k5 n2 C3 A3 [$ L/ q8 rdiagnosis, the child had a normal growth velocity at7 g3 r$ c/ B$ }
the follow-up visit. It is hoped that his final adult1 j6 ~' p/ l6 [& o
height will not be affected.
4 s$ r. r }/ e, X7 LAlthough rarely reported, the widespread avail-! J( \0 @* T* M. [
ability of androgen products in our society may
0 D1 E8 ?! U' U5 P/ F8 q- g% t5 E8 Bindeed cause more virilization in male or female- R# X& H1 ]* }- ?+ L
children than one would realize. Exposure to andro-
: L, O! k8 P, ?8 Jgen products must be considered and specific ques-8 ?3 E% Y+ N' j2 ]' p: F
tioning about the use of a testosterone product or
3 S' |. ?' b& G1 n$ Bgel should be asked of the family members during
! S9 f5 z" E6 K; |- k2 e }the evaluation of any children who present with vir-
3 {3 L' S0 ~3 }& f( j) lilization or peripheral precocious puberty. The diag-
! z9 k" j" @9 _& i; [2 Snosis can be established by just a few tests and by7 R. R1 R' G8 X7 T) D2 c! c
appropriate history. The inability to obtain such a5 k. L; }( l/ T( t& m# t
history, or failure to ask the specific questions, may
: J' S8 P" p8 S% {, b- n0 sresult in extensive, unnecessary, and expensive
# E* [* t. ?6 r4 x6 W6 |. j& F# y5 `investigation. The primary care physician should be- v* a T' y' d2 I
aware of this fact, because most of these children+ z! _5 j' k+ A
may initially present in their practice. The Physicians’, }" O/ l3 E& u
Desk Reference and package insert should also put a
7 l1 J$ [" s3 R4 ywarning about the virilizing effect on a male or
" B/ D9 Z. E) t8 Afemale child who might come in contact with some-, s, R* l6 @/ u
one using any of these products.# g* U8 W% U3 r$ A
References9 `* _. n. z# c8 e8 }
1. Styne DM. The testes: disorder of sexual differentiation8 R6 X g' @4 i5 X+ ~( Q5 f$ A
and puberty in the male. In: Sperling MA, ed. Pediatric
' d. J2 A- q" C- d0 w- z( S9 bEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;6 A. W% x5 q1 e4 J8 h q7 d* b
2002: 565-628.1 O9 U: m2 [; `# ^ G5 m
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious1 o9 L0 l' d, X: _$ U* g( G+ L
puberty in children with tumours of the suprasellar pineal
9 N6 r- r; y6 z' L$ j5 qat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
# e: ^5 u) L7 h9 h7 KTopical Testosterone Exposure / Bhowmick et al 543
. V5 {; ]4 B0 J" O) M! T( Hareas: organic central precocious puberty. Acta Paediatr.
& s2 w% h. I/ E1 _# J( r2001;90:751-756.3 @; r& [* ?0 C3 P8 f
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
, D$ K: t2 p3 r7 U7 hPediatric Endocrinology. 4th ed. New York, NY: Marcel" ?# y: y4 c* S% K3 i6 b' ~
Dekker Inc; 2003:211-238.3 {" g( n. f) l+ k8 u( N
4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
; W% y/ n0 F' I' a( ~development in a two-year-old boy induced by topical( j: w$ [# u2 t# i# H6 d
exposure to testosterone. Pediatrics. 1999;104:e23.5 b- F/ d# T& [1 ]" M
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
8 E. w7 D: |7 u* sSkeletal Development of the Hand and Wrist. 2nd ed.4 |1 Q$ l* y3 E, Z* |4 c3 s
Stanford, CA: Stanford University Press; 1959.4 W" d* S. c3 N7 B
6. Physicians’ Desk Reference. Androgel 1% testosterone,
0 g& l% h) b. a1 E# s0 S- o% ~Unimed Pharmaceutical Inc. Montvale, NJ: Medical
) L( j: j+ }0 b5 C5 rEconomics Company, Inc; 2004:3239-3241. p ?1 I k3 U% f# z5 v
7. Klugo RC, Cerny JC. Response of micropenis to topical: w' r& R2 g! J
testosterone and gonadotropin. J Urol. 1978;119:3 J) S8 ^: ?+ o; J& ^! M% o' S5 b
667-668.
: b R, S* g, l; S+ d' Q8. Guthrie RD, Smith DW, Graham CB. Testosterone5 j' o3 `5 e$ d- ~: }
treatment for micropenis during early childhood. J Pediatr.* e& m$ b8 V3 \) L% x
1973;83:247-252." Q( X" M& Z3 b: j7 F
9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone
/ v2 ?+ `( N7 v; x$ Dtherapy for penile growth. Urol. 1975;6:708-710.
( o* x; {. I5 {/ h% ~% e. r/ K5 \10. Husmann DA, Cain MP. Microphallus: eventual phallic
# U$ s& x/ i) ?size is dependent on the timing of androgen administra-
7 O; {+ E1 Q- Q: d' p2 Wtion. J Urol. 1994;152:734-739.9 e( }" s& D" j* G
11. McMahon DR, Kramer SA, Husmann DA. Micropenis:
- t4 y: B, f) v- M: i6 zdoes early treatment with testosterone do more harm; F1 R$ e H) u0 o
than good? J Urol. 1995;154:825-829.
$ R4 Y* U3 m' r2 b/ P12. Takane KK, George FW, Wilson JD. Androgen receptor" x) s3 q' z/ Q: M* ~) S
of rat penis is down-regulated by androgen. Am J Physiol.6 X! @! ]* A6 f( \
1990;258:E46-E50.
/ L# m* U0 O8 O% O$ A13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect1 W7 I; o: @4 K4 E+ Q: F1 s1 _
of prepubertal androgen exposure on adult penile
! D# d) D: N$ Z% elength. J Urol. 1996;156:783-787. |
|