- 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. Central1 ]4 {7 D1 R7 O9 X! ^
precocious puberty (CPP), which is mediated" w) p- J8 X- }5 `/ J+ C- I
through the hypothalamic pituitary gonadal axis, has* G0 i8 B4 r) f
a higher incidence of organic central nervous system1 G, K' x* P$ D/ {; s
lesions in boys.1,2 Virilization in boys, as manifested
% Q: ~1 s" Q+ T+ j# I% eby enlargement of the penis, development of pubic
* U: I+ x& g6 U( b9 khair, and facial acne without enlargement of testi-2 h) W, r! ` P" w9 i
cles, suggests peripheral or pseudopuberty.1-3 We
- V1 i2 }; Q2 \; r+ k) Jreport a 16-month-old boy who presented with the; [. @0 j' R I7 h5 c2 I9 \
enlargement of the phallus and pubic hair develop-
# f O0 W9 L( _! \ment without testicular enlargement, which was due
* _ g; v# }/ J" |$ e5 J7 ]to the unintentional exposure to androgen gel used by
5 s, k+ P( w. z' F! Q9 b: p* qthe father. The family initially concealed this infor-% `+ x. e* |5 C7 a t7 a
mation, resulting in an extensive work-up for this
# N, ~9 X+ Y6 }child. Given the widespread and easy availability of
" R9 O" H( h( S- {" ^ {) ~3 Z5 f7 Dtestosterone gel and cream, we believe this is proba-# ~ ]- |5 l6 \2 z+ h1 |9 [7 z
bly more common than the rare case report in the, w4 a) y8 @4 M0 V# J: I# Y
literature.4
q8 n. I# {) }# [8 I: SPatient Report. v) {7 h0 p1 T8 H- W j! [1 C
A 16-month-old white child was referred to the
: x2 I5 O8 h& ]" kendocrine clinic by his pediatrician with the concern
$ a' t" u, U! L/ |7 R) a, @7 G5 Q/ pof early sexual development. His mother noticed4 I4 Z6 ~" |* s: q; v
light colored pubic hair development when he was
4 V7 G. {. K; j9 k/ XFrom the 1Division of Pediatric Endocrinology, 2University of
+ @+ Z( p. b7 \* E% z1 q. PSouth Alabama Medical Center, Mobile, Alabama.3 F& w, T$ c2 X7 c/ O+ B2 {
Address correspondence to: Samar K. Bhowmick, MD, FACE,
1 G- m0 H( x8 C- J2 E7 z- cProfessor of Pediatrics, University of South Alabama, College of& n5 c8 G6 w% p3 h
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
4 v* B0 P9 Z' E; W5 w$ w8 Ne-mail: [email protected].+ b# M& U' T. c5 ?# v! Q
about 6 to 7 months old, which progressively became" w3 J5 _/ X# N
darker. She was also concerned about the enlarge-( A0 I7 B$ \1 a8 s N% P, P _
ment of his penis and frequent erections. The child
! w7 T/ X7 v& k! T8 y0 ]+ m7 Swas the product of a full-term normal delivery, with
3 _& [- {. A6 Da birth weight of 7 lb 14 oz, and birth length of# Q9 G0 t' P1 m% L4 t
20 inches. He was breast-fed throughout the first year
4 k: M/ Y- {8 t4 Kof life and was still receiving breast milk along with
. Z' f7 G( ~. O0 h( }solid food. He had no hospitalizations or surgery,8 Z/ U1 w. D+ m1 `- h1 }! J6 [
and his psychosocial and psychomotor development' F% `9 F1 k2 a( _5 e6 O
was age appropriate.
2 D# W7 `% @* BThe family history was remarkable for the father,
: U) | B2 X& I" ^ r* g, xwho was diagnosed with hypothyroidism at age 16,
& D. A5 I8 X/ f& J& {- N0 O4 rwhich was treated with thyroxine. The father’s
/ ~: k8 S1 `6 _height was 6 feet, and he went through a somewhat2 l( x2 x5 y9 s6 l
early puberty and had stopped growing by age 14.
" r, H+ v4 j6 z+ qThe father denied taking any other medication. The# x; F! V7 H1 j
child’s mother was in good health. Her menarche& B" H. P) \) Y9 s! u! ]
was at 11 years of age, and her height was at 5 feet
. z U/ ?7 k/ ]- F* z# ]. Z" e! D5 inches. There was no other family history of pre-" G b3 T9 H( b5 N4 x1 Z. F* i
cocious sexual development in the first-degree rela-. M( ?0 x! \4 Q! \
tives. There were no siblings.; j( |/ ]! y; r: {% L0 e
Physical Examination* e9 Q: S' \. c# O3 i' s
The physical examination revealed a very active,
; [0 c8 |0 }# d5 O6 ]1 I0 W' M! jplayful, and healthy boy. The vital signs documented
% @2 ~- \! Z1 i0 N% Q4 j) w8 \$ l: xa blood pressure of 85/50 mm Hg, his length was/ h3 n+ H# i& }; I6 M8 a1 U
90 cm (>97th percentile), and his weight was 14.4 kg/ V$ G' k* G' L* B% q8 p
(also >97th percentile). The observed yearly growth. Q" d7 R* ~! e3 w
velocity was 30 cm (12 inches). The examination of @ I6 ~5 m2 c
the neck revealed no thyroid enlargement.+ ]( H$ E4 }' s+ l
The genitourinary examination was remarkable for9 v/ p! Y# R5 @# j
enlargement of the penis, with a stretched length of
. @5 n' B; ]% Q4 Q! F/ a0 I8 cm and a width of 2 cm. The glans penis was very well
. y" T* X+ w2 O5 j/ Ndeveloped. The pubic hair was Tanner II, mostly around
* i5 R$ r' R6 o2 I5401 \ Q# r+ ^+ K% ?+ U+ X# L
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
7 u, [6 _; n+ H% ~4 Fthe base of the phallus and was dark and curled. The( P* l5 t( }! A0 U( J- f \- ^* W. }
testicular volume was prepubertal at 2 mL each.! M- ]$ W- G& u) E/ U9 t( x) i) K
The skin was moist and smooth and somewhat
( S& _8 [% c, k% \6 t' k' soily. No axillary hair was noted. There were no: ?3 b9 D6 l/ V% F4 o
abnormal skin pigmentations or café-au-lait spots.
5 `' _, I- T( ?: X- K9 XNeurologic evaluation showed deep tendon reflex 2+2 K0 d+ I2 ?7 ^" E9 x1 K
bilateral and symmetrical. There was no suggestion( k, W1 k; p; b
of papilledema.
9 K0 [" j. ^0 B: `% `( wLaboratory Evaluation
) t' l6 J; M+ uThe bone age was consistent with 28 months by7 F) }1 g: q! O4 ~+ y
using the standard of Greulich and Pyle at a chrono-
7 i7 S; B6 M; r5 s- ]1 B9 n( [, hlogic age of 16 months (advanced).5 Chromosomal
5 m7 n7 l! P* B a4 B* P: N4 l( {karyotype was 46XY. The thyroid function test6 k2 j7 y& A4 ?
showed a free T4 of 1.69 ng/dL, and thyroid stimu-( P% Q% x4 N- H& ]6 J" s
lating hormone level was 1.3 µIU/mL (both normal).
9 q) V: p+ ? E! L* G" L& ZThe concentrations of serum electrolytes, blood
9 {; f' C% ~' H: D/ ?urea nitrogen, creatinine, and calcium all were
, T2 g' L& Z$ d/ {5 Nwithin normal range for his age. The concentration
7 d M) {! P1 Qof serum 17-hydroxyprogesterone was 16 ng/dL/ z, ]' F+ @- u, s- T+ O l( D
(normal, 3 to 90 ng/dL), androstenedione was 201 C, ?; P4 s2 k5 J
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-0 M C' D2 y' t* @, C/ u
terone was 38 ng/dL (normal, 50 to 760 ng/dL),& d ?! T! K. e, B% c9 T% Y
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
: g1 @ K' W7 N7 D2 _49ng/dL), 11-desoxycortisol (specific compound S)
1 A7 e- H. r) L mwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-8 T7 V* d) Y( c1 ~9 ?# {4 ~2 g3 D
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
& }6 q' Q2 Z# l; t; x5 |1 vtestosterone was 60 ng/dL (normal <3 to 10 ng/dL),
- C8 I" c0 _- X$ X% ^2 k& Y! Cand β-human chorionic gonadotropin was less than% I7 S$ T" D7 v
5 mIU/mL (normal <5 mIU/mL). Serum follicular
* j# l1 v9 j7 ^- Z' M1 b. \9 fstimulating hormone and leuteinizing hormone( K2 N' t- m+ B: |! ^
concentrations were less than 0.05 mIU/mL
: G( ]# g9 h( c: ]$ d7 a8 ~! P$ p(prepubertal).
3 u ?* x5 m* j/ iThe parents were notified about the laboratory
# B0 G; A+ \6 tresults and were informed that all of the tests were
, P8 Z2 B% u7 n$ Wnormal except the testosterone level was high. The2 V* y8 ^% u. } r9 l
follow-up visit was arranged within a few weeks to
# G' t% I5 W9 ]' fobtain testicular and abdominal sonograms; how-9 |$ t2 q' m0 Y/ S/ K3 V( l
ever, the family did not return for 4 months.
) t( h l" V* zPhysical examination at this time revealed that the2 z! z; F6 a& |- O+ X" R5 v; K B
child had grown 2.5 cm in 4 months and had gained$ W. n4 W) s6 T( h0 P9 v* A0 H/ ~
2 kg of weight. Physical examination remained
* Y8 c6 d" [7 q h: ^4 v2 g) junchanged. Surprisingly, the pubic hair almost com-% t3 S q" \4 @2 _6 D
pletely disappeared except for a few vellous hairs at' ]7 U: D* `5 ^6 e/ z
the base of the phallus. Testicular volume was still 2
9 q! y8 c1 ?& L; q: g: D* OmL, and the size of the penis remained unchanged.! S$ [6 m' z4 P# x- R! \
The mother also said that the boy was no longer hav-: I' }' ]$ q! U% R+ w
ing frequent erections.6 [% e# ?! b+ G7 O9 R9 N
Both parents were again questioned about use of1 X+ n: b; \4 Q5 [
any ointment/creams that they may have applied to
7 s; g) k, |' s( E: @4 Hthe child’s skin. This time the father admitted the9 {5 g) f$ X& v; {/ g. o) \
Topical Testosterone Exposure / Bhowmick et al 5414 B4 o6 `! M" i- y$ w
use of testosterone gel twice daily that he was apply-6 x$ y. z. Z$ ~6 M5 V. v2 T$ J
ing over his own shoulders, chest, and back area for
! S1 s Z/ `3 M: E6 A# Ea year. The father also revealed he was embarrassed5 ]3 g2 |# I8 V4 }8 x" ?/ Q
to disclose that he was using a testosterone gel pre-- f" V; z: G1 y1 X4 D! v
scribed by his family physician for decreased libido
; C# `3 c( |7 x9 s1 _; T; ]secondary to depression.
1 Q. z9 T. Q6 n) ]4 l7 J0 U# \The child slept in the same bed with parents.
3 T# U: `1 ]; UThe father would hug the baby and hold him on his4 _0 d% W+ D. |9 l' F7 f* \
chest for a considerable period of time, causing sig-
4 T4 G6 D. ^& |9 c3 Gnificant bare skin contact between baby and father.
$ t- s7 H2 E: I }8 w% }* gThe father also admitted that after the phone call,# U& m! q9 \" U; W' K3 o7 }
when he learned the testosterone level in the baby
# B! l5 l4 d* B' l4 B8 b9 r% ?was high, he then read the product information H5 o w8 o% x* q: y+ p
packet and concluded that it was most likely the rea-
" s& O+ t' Y9 o0 l4 vson for the child’s virilization. At that time, they+ W. i- F3 R8 h! s. {' D. A, [, |
decided to put the baby in a separate bed, and the
& ?, N: G; u. L3 u/ gfather was not hugging him with bare skin and had
& F! W. q% J) q; rbeen using protective clothing. A repeat testosterone2 }5 n/ Y" L6 M N
test was ordered, but the family did not go to the
- X; N* H6 N K8 nlaboratory to obtain the test.
7 n# o! o3 r1 l7 ?. i+ pDiscussion, N; [- ~7 U4 o* ?6 ]# \& } \
Precocious puberty in boys is defined as secondary
6 Y# F' ]: Q( ~4 qsexual development before 9 years of age.1,4; P+ d. S9 P* c' k& Z0 n
Precocious puberty is termed as central (true) when7 [: \) z8 ?2 Y6 o
it is caused by the premature activation of hypo-
+ \" A- Y& O, { V6 {thalamic pituitary gonadal axis. CPP is more com-
. [! Y3 ~0 e( r9 l3 @8 f% dmon in girls than in boys.1,3 Most boys with CPP
! \! f9 S U% y6 v* `% v0 Pmay have a central nervous system lesion that is$ W5 B/ Z+ y4 V. M/ t+ a
responsible for the early activation of the hypothal-" b7 Y1 q, `+ E) L) C: T& J
amic pituitary gonadal axis.1-3 Thus, greater empha-# a) A+ b6 l- ~+ P0 C
sis has been given to neuroradiologic imaging in
; u2 G% ]! j, O; Q& Q8 ?& ^& u: i# _boys with precocious puberty. In addition to viril-
, u% }1 K0 M5 M0 Oization, the clinical hallmark of CPP is the symmet-
# O; J; g6 b! c( h8 o+ erical testicular growth secondary to stimulation by
8 J* i. @& j4 ~4 d& Egonadotropins.1,3* r" x1 t6 ~( S/ }
Gonadotropin-independent peripheral preco-
( w5 T4 v6 }0 B5 {+ t* C6 s' Z* wcious puberty in boys also results from inappropriate) X- A \* w3 u5 d- K) p1 [$ Y
androgenic stimulation from either endogenous or$ R7 y% X# \/ s. h2 B0 m! Q% u' z
exogenous sources, nonpituitary gonadotropin stim-6 }# j0 y: e. B0 T' l2 S. w
ulation, and rare activating mutations.3 Virilizing0 \& j: H& c" `+ \0 Q2 G/ e
congenital adrenal hyperplasia producing excessive" `/ ?' O/ \. X. Y1 l; N' M v! d* Q
adrenal androgens is a common cause of precocious
" C' x- v; m1 i, L/ M2 m2 ? Zpuberty in boys.3,4& H5 X2 `9 r1 k, }# r$ |' r
The most common form of congenital adrenal
7 j$ t, y: ~; b; i o+ O! M3 G7 ihyperplasia is the 21-hydroxylase enzyme deficiency.& Q& `) j2 H7 ?
The 11-β hydroxylase deficiency may also result in
+ Z" ~9 P* }+ L* I8 o. Sexcessive adrenal androgen production, and rarely,1 L& y0 E6 J( x" V8 }
an adrenal tumor may also cause adrenal androgen0 U( x% Q g( u
excess.1,3% R4 s# ?* k* q" ]! p2 d
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
+ d* a i$ \1 W' Y4 b' q( r C$ }542 Clinical Pediatrics / Vol. 46, No. 6, July 20070 V" x) l& j, `) P/ N& j
A unique entity of male-limited gonadotropin-
' B4 k; x# K2 s# ]* {* Windependent precocious puberty, which is also known
' ?6 {% f2 u9 Tas testotoxicosis, may cause precocious puberty at a
1 r* o: }( M7 M8 a" Uvery young age. The physical findings in these boys
& {% E4 `8 z+ P Vwith this disorder are full pubertal development,
9 ^ Q9 [/ } N( Z$ B! l2 Gincluding bilateral testicular growth, similar to boys
' D5 L- E5 c7 ]+ B# Mwith CPP. The gonadotropin levels in this disorder) {2 ]2 E9 ~' C0 t% ~2 ^, |
are suppressed to prepubertal levels and do not show
# N2 p( `* v0 B! N x4 j8 L& rpubertal response of gonadotropin after gonadotropin-# s, ~, V, T N, j
releasing hormone stimulation. This is a sex-linked
5 h: A; P# D! Gautosomal dominant disorder that affects only/ z! e+ s0 F+ x/ J1 F
males; therefore, other male members of the family
* E/ P w, V. @7 X$ ~/ d2 qmay have similar precocious puberty.3: }/ @' Y8 y; D) r0 M' f5 z
In our patient, physical examination was incon-# @- F% [7 r# ], D
sistent with true precocious puberty since his testi-% N, n( h" ?* R7 Y
cles were prepubertal in size. However, testotoxicosis" l0 j1 d: d. x; L* R
was in the differential diagnosis because his father
4 |4 @' C+ r5 D7 a8 j5 s4 Q3 ?started puberty somewhat early, and occasionally,: t* A/ g/ @4 E# f9 T& I4 g! T8 \
testicular enlargement is not that evident in the
$ S& `/ o3 v, ~1 u" u5 b. z$ cbeginning of this process.1 In the absence of a neg-: `, l7 ~/ r: ~7 B1 w0 v
ative initial history of androgen exposure, our2 N1 k" F* k* c% E
biggest concern was virilizing adrenal hyperplasia,
, g; N; p% f7 }either 21-hydroxylase deficiency or 11-β hydroxylase9 W+ k# a- ~* V* b' C, m
deficiency. Those diagnoses were excluded by find-! Q/ \* Y2 g: Y* w
ing the normal level of adrenal steroids.* c0 B" h8 n) r2 N' U
The diagnosis of exogenous androgens was strongly0 }& p4 a& a2 q0 M' ~* M
suspected in a follow-up visit after 4 months because
% @7 A- l, I3 u0 i+ o8 o- Wthe physical examination revealed the complete disap-
" C. ^: V3 \ p& a- S/ Qpearance of pubic hair, normal growth velocity, and8 D# l1 Q* Y- d/ Z$ F. U
decreased erections. The father admitted using a testos-
& Q) u7 C: Z: y( j' O, i/ W' bterone gel, which he concealed at first visit. He was) W V* q7 a2 m; V. B# l5 I
using it rather frequently, twice a day. The Physicians’
# g) C! o; w2 E; u$ JDesk Reference, or package insert of this product, gel or
4 Y" c2 S0 ~7 u& N" d+ a# Gcream, cautions about dermal testosterone transfer to
. T) C% D; b/ x0 D: d9 p0 _! f) Junprotected females through direct skin exposure.
$ @9 w. {! L+ n9 n/ dSerum testosterone level was found to be 2 times the7 M. `8 E& U5 f* V- W1 \+ v
baseline value in those females who were exposed to9 Y+ j7 G8 U- a! p. P
even 15 minutes of direct skin contact with their male
0 f' F' g0 B+ Z8 h( X$ Apartners.6 However, when a shirt covered the applica-
$ e2 p0 d# h# M* }; U. A% f5 Etion site, this testosterone transfer was prevented.
2 L2 Y8 ?" [3 j! w# y2 eOur patient’s testosterone level was 60 ng/mL,
: h0 L# _5 z+ [( d; xwhich was clearly high. Some studies suggest that8 v$ [' {! C& p; k; J2 E
dermal conversion of testosterone to dihydrotestos-
- @4 t# w. ~' [6 f/ l/ R2 J3 Y8 iterone, which is a more potent metabolite, is more" r4 e+ S0 W& p3 G E6 T5 B3 T
active in young children exposed to testosterone
8 N2 S* _! L o$ lexogenously7; however, we did not measure a dihy-
+ r. \) c. ^: p' C4 b1 Ddrotestosterone level in our patient. In addition to1 f1 @1 X% j, H5 w' G& A8 c1 z
virilization, exposure to exogenous testosterone in
7 Z% n9 U. L2 M# h$ {0 Z' u% |children results in an increase in growth velocity and, S- G8 M% T, _* i% Q
advanced bone age, as seen in our patient.
; G+ x8 c% s. M' L$ ?, `) @. hThe long-term effect of androgen exposure during6 z1 b. n" N8 ^0 j+ L: ^
early childhood on pubertal development and final9 B& S p8 E5 j. t3 w- f ^
adult height are not fully known and always remain
: j J' T! u5 |: d4 D) oa concern. Children treated with short-term testos-2 b4 Y" ?0 ?. k9 F/ k
terone injection or topical androgen may exhibit some
) ?' |8 t7 _" T4 _( j$ @acceleration of the skeletal maturation; however, after- j/ A& Y7 W) V" f$ Y$ A. C
cessation of treatment, the rate of bone maturation: n% |1 A/ |4 j
decelerates and gradually returns to normal.8,9. X- J* G( Q2 P; u2 _1 }' @* W
There are conflicting reports and controversy- z. h) j4 A7 S' w
over the effect of early androgen exposure on adult
( u6 T# M# A8 P) c3 |penile length.10,11 Some reports suggest subnormal
) Z1 ?# P* I' K6 ^( Radult penile length, apparently because of downreg-
) x" G9 _3 H$ X9 d& zulation of androgen receptor number.10,12 However,% y+ u0 t$ |" d+ N' X" z
Sutherland et al13 did not find a correlation between& K$ s( r' p5 z6 y8 h A2 S* R7 n
childhood testosterone exposure and reduced adult i! D U7 ^1 \% k/ ~" x9 m" T8 H f
penile length in clinical studies.
$ P# c) U% P) _; }Nonetheless, we do not believe our patient is( e4 x1 P9 G) L0 ?5 c
going to experience any of the untoward effects from
, F9 p+ O2 o+ y8 z2 H$ qtestosterone exposure as mentioned earlier because9 Q9 y. d' }/ l |5 |1 j
the exposure was not for a prolonged period of time.
" } z' d5 P3 j' U2 g2 VAlthough the bone age was advanced at the time of. w/ E: \7 d2 q( p. [
diagnosis, the child had a normal growth velocity at2 m' l% u/ _$ k6 p6 B0 C, C
the follow-up visit. It is hoped that his final adult6 G, q0 p6 N3 `6 |3 o
height will not be affected.6 _8 F0 L/ P, R5 O
Although rarely reported, the widespread avail-
! K1 y, N3 E* n: R: f8 ~ability of androgen products in our society may
: \; {* M( J z' `6 Qindeed cause more virilization in male or female
9 }! I+ _7 D- ?7 |children than one would realize. Exposure to andro-
$ t' k& v7 Z& l7 Rgen products must be considered and specific ques-
, B+ ]0 t. w+ M8 t6 Ationing about the use of a testosterone product or4 ^" U' L# V4 H3 e5 U7 o, @ K
gel should be asked of the family members during4 ~5 L3 s1 l2 {0 Q
the evaluation of any children who present with vir-
! w; T5 Q( G& u$ l P/ j5 hilization or peripheral precocious puberty. The diag-
6 @) ?* }5 n. c& snosis can be established by just a few tests and by
: v, F. Y. ]: I, P( d3 Q x! Happropriate history. The inability to obtain such a9 a) ]# l. p6 y3 B& ~' n
history, or failure to ask the specific questions, may
' A1 S: R$ D3 U3 _+ _result in extensive, unnecessary, and expensive- x" d0 j+ F& u& ?' J
investigation. The primary care physician should be I. h# m+ Z# O; j' u2 Y
aware of this fact, because most of these children
. X; ~3 C5 \; M# b: {5 C! {may initially present in their practice. The Physicians’
* q* \& w% C9 {2 G: m( G: o. o2 z7 y' M$ ADesk Reference and package insert should also put a
* z6 a: T6 g. |8 t9 |# `warning about the virilizing effect on a male or
2 d! K: y: N8 E; kfemale child who might come in contact with some-
% h: S0 F( P5 I* C; Fone using any of these products.) J' _+ z* N, p
References
1 f& e! Z2 f2 T8 u+ b* B0 d; R, Y1. Styne DM. The testes: disorder of sexual differentiation: m b: K' q1 S1 f; c/ H' w7 q5 W
and puberty in the male. In: Sperling MA, ed. Pediatric
Z0 I0 v& U! p, YEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
9 _5 Q7 V, L6 g$ g) M9 i1 i2002: 565-628.+ ?; s, @! ~ A. @/ }
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
l. d: A: i: j3 Npuberty in children with tumours of the suprasellar pineal
- p1 g8 N$ O( t# L$ qat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from3 `. B' [% f9 a) }- z
Topical Testosterone Exposure / Bhowmick et al 543: @4 P2 w c+ Z8 V( M& B" t
areas: organic central precocious puberty. Acta Paediatr.3 e. P- e) v+ x- Y
2001;90:751-756.
, D' O @& N. s3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.7 y& H4 a' t2 f7 H( d n
Pediatric Endocrinology. 4th ed. New York, NY: Marcel
% y( W, D/ Q1 X1 E# FDekker Inc; 2003:211-238.) h: B$ M6 d8 W
4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
# T( _' [5 _! Jdevelopment in a two-year-old boy induced by topical
% V- Q, \4 R6 y9 n) B) J# j6 [6 ^* oexposure to testosterone. Pediatrics. 1999;104:e23.: k3 \4 S( U! n; ^# i
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
6 s3 Y/ O5 u5 e" N% O! ^+ ESkeletal Development of the Hand and Wrist. 2nd ed.
3 a; U; f. {, HStanford, CA: Stanford University Press; 1959./ r1 c5 X* b' a% A' z
6. Physicians’ Desk Reference. Androgel 1% testosterone,
$ `2 Q# b# t& p3 {7 ]: e' c+ VUnimed Pharmaceutical Inc. Montvale, NJ: Medical
- q) g( c7 ?6 e' D( B3 FEconomics Company, Inc; 2004:3239-3241.$ W8 g) o/ r# Z S( S- A
7. Klugo RC, Cerny JC. Response of micropenis to topical
$ S0 I8 t# J" T/ F$ Itestosterone and gonadotropin. J Urol. 1978;119:
( z! U$ j$ _9 q- c* o667-668./ r) M3 F2 S n4 r6 ?2 H m8 }2 O
8. Guthrie RD, Smith DW, Graham CB. Testosterone! z( |3 ~5 R# p: b1 ^
treatment for micropenis during early childhood. J Pediatr.
$ I9 |! O; @9 J. R9 |( I1 [1973;83:247-252.6 y6 _6 a/ ]' q \3 Y+ x/ {
9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone
! i( [+ z H/ L( Rtherapy for penile growth. Urol. 1975;6:708-710.
+ [3 m6 h7 b5 H4 K8 z- P+ ?10. Husmann DA, Cain MP. Microphallus: eventual phallic* j" d3 q4 ? z @# a0 b# ~& P5 L
size is dependent on the timing of androgen administra-7 I( l1 W/ n9 [# D9 }
tion. J Urol. 1994;152:734-739.
6 L* ~; y- B6 o1 y11. McMahon DR, Kramer SA, Husmann DA. Micropenis:$ M: b- y+ r0 a
does early treatment with testosterone do more harm
& C i2 f/ C( K8 I/ r3 A0 [than good? J Urol. 1995;154:825-829., k8 X& b0 c6 o
12. Takane KK, George FW, Wilson JD. Androgen receptor- o4 h: v, }- C/ F
of rat penis is down-regulated by androgen. Am J Physiol.0 d, ?: l! |' G9 o+ f' o
1990;258:E46-E50.# w3 G4 X. k% I- D5 i1 r4 g6 o
13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect
2 | d3 \8 |, Y H: ^! Hof prepubertal androgen exposure on adult penile9 a# S" U* k$ }' [$ x. x
length. J Urol. 1996;156:783-787. |
|