- 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
' n) P: i1 b, D& x6 n" iprecocious puberty (CPP), which is mediated% H$ G/ l) }4 y$ k
through the hypothalamic pituitary gonadal axis, has1 |& `( z3 i" N* s8 Y
a higher incidence of organic central nervous system1 \$ B5 e. I8 o# m+ d7 N2 |
lesions in boys.1,2 Virilization in boys, as manifested
3 i3 r8 A- ?/ Jby enlargement of the penis, development of pubic/ Z; f- a5 \- V2 i
hair, and facial acne without enlargement of testi-
" v! Z- g) j! r9 {6 l- q2 E- Lcles, suggests peripheral or pseudopuberty.1-3 We' N+ ~7 S+ L. P) T( U
report a 16-month-old boy who presented with the4 l& r+ o- A% f9 }/ ^( `
enlargement of the phallus and pubic hair develop-
; `: v# z- O. @# E, T( rment without testicular enlargement, which was due0 V9 h3 @: L) p# H, {; T5 c
to the unintentional exposure to androgen gel used by
$ B8 N1 C7 y& j9 {# t) \the father. The family initially concealed this infor-0 q5 s' V4 L( l5 g7 R
mation, resulting in an extensive work-up for this
! l. ]* j4 j) j4 T: Ichild. Given the widespread and easy availability of7 r) s) H- F. \; Y7 q$ x
testosterone gel and cream, we believe this is proba-
8 B" v0 D' Z, F# q8 C) U' ubly more common than the rare case report in the- J; Q; ~, d F8 }. Y
literature.4
* ~) n3 o! B+ _Patient Report
; b$ P: r. G0 } `) ?2 C$ C* o# tA 16-month-old white child was referred to the
# R$ z- m: T+ uendocrine clinic by his pediatrician with the concern* u/ o. k( f4 \% n: h
of early sexual development. His mother noticed
; X9 v( w1 E5 D; U8 k) Q- d5 c Glight colored pubic hair development when he was
8 _7 `0 z$ @. W0 tFrom the 1Division of Pediatric Endocrinology, 2University of2 o; D P# t" b- \6 ^, X
South Alabama Medical Center, Mobile, Alabama.8 ?6 p7 s( h, v3 W* s# u5 v
Address correspondence to: Samar K. Bhowmick, MD, FACE,$ W; |6 |, [' s) K# t. ?
Professor of Pediatrics, University of South Alabama, College of% d6 d6 e. H* Y; F% [+ ^: P% `1 P* {
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
2 `; ^7 v! S7 R; e; ve-mail: [email protected].
2 T3 h1 u* x; U- y8 b0 g2 t# m3 x4 p# Wabout 6 to 7 months old, which progressively became
) E+ b7 a5 e7 x8 X, f+ l! \darker. She was also concerned about the enlarge-4 k; _) T/ q" K. B0 b, c O/ K0 V
ment of his penis and frequent erections. The child+ o4 l7 o1 `3 X, E' ?" G
was the product of a full-term normal delivery, with
4 s! f j: {3 _6 Oa birth weight of 7 lb 14 oz, and birth length of* Q1 Y& d$ s4 L) q
20 inches. He was breast-fed throughout the first year' x& S5 G. e" W6 D, A p w+ C& s$ P
of life and was still receiving breast milk along with
: r$ H7 r" T7 T8 E9 esolid food. He had no hospitalizations or surgery,2 E$ G' K9 `0 @9 S; g& @
and his psychosocial and psychomotor development
' F4 E y8 R2 q; }6 m4 r7 E( Iwas age appropriate.
, V9 K _! N! V/ F2 C2 ]The family history was remarkable for the father,
& B- R( P6 B' e/ N; E/ wwho was diagnosed with hypothyroidism at age 16,
' C) ]% u* W3 dwhich was treated with thyroxine. The father’s7 B6 ]& r& R: Z1 J7 \" I/ v
height was 6 feet, and he went through a somewhat5 j* S' W1 [1 Y) }9 w
early puberty and had stopped growing by age 14.
! f7 a+ d7 P: B0 UThe father denied taking any other medication. The
# h! w# N* u( H9 W2 V' `' l7 y+ c+ Fchild’s mother was in good health. Her menarche
! n7 L1 P E }4 x6 ewas at 11 years of age, and her height was at 5 feet- _# U; V' N: K5 @
5 inches. There was no other family history of pre-" I% q( F9 _9 I( }1 Q
cocious sexual development in the first-degree rela-
* L( x& R* P9 h% h; wtives. There were no siblings.! a) z, e* T X$ v
Physical Examination4 I( A3 |. X# Y: o1 F1 ? a L
The physical examination revealed a very active,
" e" _4 U M: V7 i* [playful, and healthy boy. The vital signs documented
# Q1 u2 R4 s3 Ya blood pressure of 85/50 mm Hg, his length was
! Q) _8 \, a1 w# a$ W& V90 cm (>97th percentile), and his weight was 14.4 kg% X& G1 V% |+ n( ]4 S0 `& ]
(also >97th percentile). The observed yearly growth5 L5 Z1 z6 c6 b Y+ y I7 N( X
velocity was 30 cm (12 inches). The examination of j% v& H7 z, D y. [6 D, @
the neck revealed no thyroid enlargement.
G' \+ U! b" E: C, h& T' `# pThe genitourinary examination was remarkable for8 ~3 y" H3 M8 G- t9 ?# ]
enlargement of the penis, with a stretched length of! E" w2 m; p4 q' S/ G4 w! W# D2 C
8 cm and a width of 2 cm. The glans penis was very well8 `' _5 e, Z/ r: `
developed. The pubic hair was Tanner II, mostly around
+ C6 M& F* I8 Q2 I, d0 [: g540
( B0 j. k, l; r* E/ q7 Kat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from- K. j+ v# L6 ]' n# q# G0 L9 j
the base of the phallus and was dark and curled. The# h+ k; t7 R$ p8 F' j0 _* {/ Q2 Q
testicular volume was prepubertal at 2 mL each.$ E* ?; \/ u4 J3 C' G3 N
The skin was moist and smooth and somewhat
/ E% ~& C3 [6 _oily. No axillary hair was noted. There were no
7 ?3 q5 O5 S9 habnormal skin pigmentations or café-au-lait spots.& J1 j9 J' S) N( T
Neurologic evaluation showed deep tendon reflex 2+
- j& F$ T6 C8 K$ }bilateral and symmetrical. There was no suggestion
( z7 o1 u: A5 C* l1 Hof papilledema.5 B/ P! A0 y; i5 G8 D: @
Laboratory Evaluation
: L2 ^9 i% _; L: LThe bone age was consistent with 28 months by1 E2 j' v/ Q: X2 |! ^6 R1 `
using the standard of Greulich and Pyle at a chrono-0 Q5 ~4 r/ `. E- a
logic age of 16 months (advanced).5 Chromosomal) e. Q! M1 [* M$ Y0 T4 f8 y( m8 o
karyotype was 46XY. The thyroid function test9 V, v& m( ?: k0 D. u0 a/ V" ?
showed a free T4 of 1.69 ng/dL, and thyroid stimu-
# U7 K5 j8 u2 W3 Flating hormone level was 1.3 µIU/mL (both normal).
1 G8 v6 f8 d& Q+ z8 R( i3 lThe concentrations of serum electrolytes, blood
. L# M" D% V* ~! d7 j9 ?8 surea nitrogen, creatinine, and calcium all were
$ C+ s0 O4 e# ?' i- Pwithin normal range for his age. The concentration6 o9 i6 ~' a# E" T
of serum 17-hydroxyprogesterone was 16 ng/dL3 b2 v6 o3 L+ ?, D- o
(normal, 3 to 90 ng/dL), androstenedione was 20
* l. H7 r8 [" ^$ M! vng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-3 b* Z S: `/ M) B. |* @4 W, w9 ]
terone was 38 ng/dL (normal, 50 to 760 ng/dL),% `% u0 u! e5 m
desoxycorticosterone was 4.3 ng/dL (normal, 7 to% y" Y0 B0 {7 y3 J( k. V3 m" B* M
49ng/dL), 11-desoxycortisol (specific compound S)
. Z" [7 }3 ] z! b; U7 Jwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
- o2 ]. S/ o) P* d& ztisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total1 g7 ]2 f% t0 W0 J4 J2 S* k
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
4 A0 W: h3 w* land β-human chorionic gonadotropin was less than) m! Z R5 z1 z) x: p- u2 g" E' _, u5 G
5 mIU/mL (normal <5 mIU/mL). Serum follicular+ ]' C5 ?! B' x
stimulating hormone and leuteinizing hormone" M& v# b" o2 y- b# w% L0 _
concentrations were less than 0.05 mIU/mL) B7 S" c/ g: ?7 C; y F' |% q
(prepubertal).$ u E% a& r$ [1 s0 A
The parents were notified about the laboratory& ]: C8 a" g4 G9 Y1 d$ `: e
results and were informed that all of the tests were m9 \, _: ]' A# k
normal except the testosterone level was high. The8 g" a! [9 J8 g# m$ Y# K( _- s
follow-up visit was arranged within a few weeks to
9 U) V% z* V4 @, R' H8 b% }. w& gobtain testicular and abdominal sonograms; how-4 |2 V# Q5 g& f& D5 O: [3 U; i2 H! K
ever, the family did not return for 4 months.4 P x4 y2 i; Z6 e* }; t2 s
Physical examination at this time revealed that the
, } a5 R7 P$ n5 `- R! ]' cchild had grown 2.5 cm in 4 months and had gained- n, W) z; ]( d2 o
2 kg of weight. Physical examination remained
4 z# ~: v* l4 `: ?, g. x% nunchanged. Surprisingly, the pubic hair almost com-
) `2 k: X# C$ v- m! M3 [pletely disappeared except for a few vellous hairs at: d; L7 L0 O3 Q$ [& f4 l- ?
the base of the phallus. Testicular volume was still 2
; l. c) s, M. a. f; C3 r; ImL, and the size of the penis remained unchanged.
m$ { k: `! d. SThe mother also said that the boy was no longer hav-" Z9 C; r. W. r8 z K9 V' j
ing frequent erections.: `: `" d9 ~+ ~, ?! l/ M
Both parents were again questioned about use of) z/ _7 |7 ?( s7 ^4 I
any ointment/creams that they may have applied to
: `. y6 z' d6 r2 v, Fthe child’s skin. This time the father admitted the0 {. {( y' c; I# ]
Topical Testosterone Exposure / Bhowmick et al 541+ B4 a3 `6 I' ]$ m- |! e8 Y0 i) }
use of testosterone gel twice daily that he was apply-0 A( P) c8 u/ a! {
ing over his own shoulders, chest, and back area for
2 `* O2 Q% I" @a year. The father also revealed he was embarrassed& M$ X8 l$ y" A
to disclose that he was using a testosterone gel pre-- Y& x# \/ H+ ]: D; Y$ ~1 L& Y( a/ w3 b
scribed by his family physician for decreased libido
5 H" l$ w' f, o- B! z) usecondary to depression. ]& q$ ^6 p5 F/ e3 H
The child slept in the same bed with parents.; h8 w* w2 ~' ?% B1 z6 G& P8 }
The father would hug the baby and hold him on his
! g3 M5 O2 c$ |# h8 l7 |chest for a considerable period of time, causing sig-6 d: _' V. A1 x) I/ |8 h, s
nificant bare skin contact between baby and father.5 v; P+ T+ L1 E3 j, I
The father also admitted that after the phone call,
& y W) L f3 \. |; H% q( F) fwhen he learned the testosterone level in the baby
% q/ F8 \2 v' I* {* s3 ]8 J& E$ Cwas high, he then read the product information( w( E9 s. R5 f* k* g7 d0 G
packet and concluded that it was most likely the rea-
% A6 o# ]5 v W" J' y0 L2 nson for the child’s virilization. At that time, they ~- ]6 d( L7 ~
decided to put the baby in a separate bed, and the
# I+ X: n' W8 q$ \$ }/ V0 P' `father was not hugging him with bare skin and had! N" K$ _- Y! h0 H* ]* E7 X
been using protective clothing. A repeat testosterone1 k0 w! A* E2 B. Y4 L- U' U
test was ordered, but the family did not go to the
7 E6 b) i; D7 `* k8 P7 j1 alaboratory to obtain the test.' g9 k+ c/ R8 q: ]
Discussion
7 {8 U8 j& X. J4 gPrecocious puberty in boys is defined as secondary; m n7 z0 ^9 v( _% A
sexual development before 9 years of age.1,4$ b( O$ Z% Q6 A- A6 P' [
Precocious puberty is termed as central (true) when) v. e3 ]: K5 Z* l
it is caused by the premature activation of hypo-6 M2 T! O* |& P1 l i: N! L
thalamic pituitary gonadal axis. CPP is more com-0 y) I0 M3 d: L. c
mon in girls than in boys.1,3 Most boys with CPP
" `0 p: m, P3 R# n4 S$ g; N( u- dmay have a central nervous system lesion that is8 V' I# ~ n" o: O" ` H
responsible for the early activation of the hypothal-8 ?0 i, a& _! G) H( Z
amic pituitary gonadal axis.1-3 Thus, greater empha-. u' j/ I* j6 k) N8 L8 ?$ `9 N
sis has been given to neuroradiologic imaging in: Q9 x" Z! L% n- Q- t, p0 o; K9 a
boys with precocious puberty. In addition to viril-
/ }- h, R8 R' X6 B+ c# P$ ?* I' Iization, the clinical hallmark of CPP is the symmet-9 u3 `% B5 K) l j; v* L+ | C5 X
rical testicular growth secondary to stimulation by$ f2 ~% |9 m$ I: L! D
gonadotropins.1,39 @) I5 o1 ^0 _4 @( { Q- |
Gonadotropin-independent peripheral preco-( Q3 T$ X7 C; M4 l
cious puberty in boys also results from inappropriate5 l4 O0 t5 Q6 r d, ~( G; T; N7 j
androgenic stimulation from either endogenous or
4 z5 y# L+ q$ d; Vexogenous sources, nonpituitary gonadotropin stim-
9 K1 y! R/ |3 |( ] }: }) Culation, and rare activating mutations.3 Virilizing' Q) u0 o, P7 e: |" [ f/ x
congenital adrenal hyperplasia producing excessive
4 \7 `$ r( e2 m1 `+ padrenal androgens is a common cause of precocious% Z& j) @: d% }" l/ @4 M5 S
puberty in boys.3,4/ U& Z; Z6 e9 r* O7 h
The most common form of congenital adrenal6 x% Q7 D( G& ?! L7 l- o
hyperplasia is the 21-hydroxylase enzyme deficiency.
T8 u% I; J) K7 wThe 11-β hydroxylase deficiency may also result in- s4 Z" `6 j& u
excessive adrenal androgen production, and rarely,( d& m2 I6 Q; C0 j4 \/ e$ V+ _
an adrenal tumor may also cause adrenal androgen/ _/ b3 O* K; [$ y% ?' p- D
excess.1,3
+ u* Z$ l2 U, q% ^$ M, j# yat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from+ c0 D3 g- ]( X7 ? B, ~7 Q
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007' B$ o Z2 P# M% M% I' J( Y
A unique entity of male-limited gonadotropin-# S+ j6 X x+ y( P
independent precocious puberty, which is also known$ c- [0 G, F; k L7 ~. ]/ n* ^
as testotoxicosis, may cause precocious puberty at a
) t- V' k# @ V# E- Qvery young age. The physical findings in these boys
% t9 A$ d+ A8 W, v; S2 P7 A( C/ [with this disorder are full pubertal development,5 v6 w- E$ M) _9 J" G( u8 s- u
including bilateral testicular growth, similar to boys( `/ ]1 ?6 B7 `& W- Q
with CPP. The gonadotropin levels in this disorder9 z' e3 c( R+ Z: `* p# L; I+ l
are suppressed to prepubertal levels and do not show
4 n& r& V: [: h! z- Qpubertal response of gonadotropin after gonadotropin-+ { Q# L/ A" D; J
releasing hormone stimulation. This is a sex-linked
: j+ _$ U- U9 W: S- l* h$ U5 M1 Yautosomal dominant disorder that affects only L2 ]) M1 F2 u+ c, H( p
males; therefore, other male members of the family. e* C# D' v4 X, }/ `5 [
may have similar precocious puberty.34 L. f- ]7 c6 a5 ~7 d, D
In our patient, physical examination was incon-
0 V. i) u: f4 ?# G5 i& ~sistent with true precocious puberty since his testi-
7 U3 |5 ]3 |5 k# K6 M( T$ Qcles were prepubertal in size. However, testotoxicosis
- H" ?# s3 \) A$ twas in the differential diagnosis because his father4 H( E; I: C1 a5 n0 `
started puberty somewhat early, and occasionally,
; E5 r& }5 [0 Itesticular enlargement is not that evident in the
6 l1 n- k% s! t9 Nbeginning of this process.1 In the absence of a neg-" Z2 x/ G; P' C4 ?# }
ative initial history of androgen exposure, our
" o/ p' R; b( a. [biggest concern was virilizing adrenal hyperplasia,9 s3 v* n; @- ^! Z
either 21-hydroxylase deficiency or 11-β hydroxylase% C5 K! E! N1 G5 Y
deficiency. Those diagnoses were excluded by find-. c2 _) L0 a' n) U7 A' M/ z
ing the normal level of adrenal steroids.
% _* {5 R% a+ _The diagnosis of exogenous androgens was strongly
0 h% ?' V7 x! I6 v$ r5 }' Isuspected in a follow-up visit after 4 months because7 W/ U6 h: K% `! j: Q) D
the physical examination revealed the complete disap-* J$ R" ]- V+ j# w5 }' x
pearance of pubic hair, normal growth velocity, and
! J$ j1 i7 ~6 Z: Pdecreased erections. The father admitted using a testos-
: A& n+ x# n; d+ `7 o3 zterone gel, which he concealed at first visit. He was
. E) V2 Z4 C4 |" S8 y4 e- Dusing it rather frequently, twice a day. The Physicians’
! I' ~% s" Q/ b3 a& R) b- jDesk Reference, or package insert of this product, gel or7 C! [! j6 `9 `0 E0 z5 B& V; C) U0 H
cream, cautions about dermal testosterone transfer to) E2 Y" G# o& f. u2 }: K& S" O3 @
unprotected females through direct skin exposure." Y* `$ d, Z: ^
Serum testosterone level was found to be 2 times the9 x8 f% d0 a: E$ ]" k% @
baseline value in those females who were exposed to
1 f/ s. m0 e, U1 X: P- }. A* T7 peven 15 minutes of direct skin contact with their male/ e+ @9 ~7 @; b- d; ?+ y& w
partners.6 However, when a shirt covered the applica-
) S( E7 \+ k6 r1 P( i5 vtion site, this testosterone transfer was prevented.5 @. a9 Y5 c/ Y9 D
Our patient’s testosterone level was 60 ng/mL,
' F+ {0 z6 |$ P0 |which was clearly high. Some studies suggest that
, L B" u5 u2 W& z" b% vdermal conversion of testosterone to dihydrotestos-
# v4 A& W0 Q& a/ S6 q/ D" H7 W; ?terone, which is a more potent metabolite, is more
/ [+ g$ H9 m5 L6 K* z; }active in young children exposed to testosterone7 c/ q# ^8 ]4 F& s, ~3 [: Z' G3 a; {
exogenously7; however, we did not measure a dihy-
3 \1 [6 H+ G6 K. X* Rdrotestosterone level in our patient. In addition to
* i+ Z* k' D @1 i: Wvirilization, exposure to exogenous testosterone in
7 a+ v# l0 f0 M+ L3 j% Tchildren results in an increase in growth velocity and, G9 t1 Z0 U( w- o/ ?% p9 G
advanced bone age, as seen in our patient.
7 W" r/ O9 A2 xThe long-term effect of androgen exposure during
" K* \9 o* A9 Y" t0 Eearly childhood on pubertal development and final1 L# U5 y9 t' O' T+ k! O
adult height are not fully known and always remain
* P+ i" c# | \a concern. Children treated with short-term testos-1 Z! E' d! E, k8 d
terone injection or topical androgen may exhibit some. e* o2 B+ @, J5 w) u) w
acceleration of the skeletal maturation; however, after4 b: T. A$ H2 v
cessation of treatment, the rate of bone maturation0 t6 n8 r; `) @2 X: ~9 k
decelerates and gradually returns to normal.8,9
: |/ \/ l# N }& F. {1 GThere are conflicting reports and controversy
: ^6 M+ q9 L4 W8 yover the effect of early androgen exposure on adult
% r% a9 s. X3 t+ C4 hpenile length.10,11 Some reports suggest subnormal
3 S- x6 e, ~7 D7 |adult penile length, apparently because of downreg-' w# @/ J: l% @3 H7 p
ulation of androgen receptor number.10,12 However,# ]* l% K) X+ ?( i3 e8 w8 j
Sutherland et al13 did not find a correlation between4 Q1 t7 M0 ]; {! p. D
childhood testosterone exposure and reduced adult0 K2 H0 g0 b" r3 Q- z
penile length in clinical studies.* ^( ^; f! D5 e: ~+ k- K
Nonetheless, we do not believe our patient is% O4 b& H3 q5 Z, y( g2 ?3 N
going to experience any of the untoward effects from8 x, ]4 Z# j0 c; ~! M) ?
testosterone exposure as mentioned earlier because* o# ^" {$ K$ Y* F; L. K+ U
the exposure was not for a prolonged period of time.
# H5 K. F* n7 Y: EAlthough the bone age was advanced at the time of
+ L) C' X6 c* q. }4 l3 L% @diagnosis, the child had a normal growth velocity at
5 ?7 a) K) v/ f# j% B7 Ythe follow-up visit. It is hoped that his final adult
& [3 K9 B' J& q7 W, { s+ Bheight will not be affected.
- A& Y% l* Y. k/ I, a. OAlthough rarely reported, the widespread avail-/ |8 s% r' M! o9 C
ability of androgen products in our society may
, H+ }) ]) i2 n& w' f7 m/ Aindeed cause more virilization in male or female
3 `+ ]& n" U; `, x5 Q8 {, |6 \children than one would realize. Exposure to andro-
7 a8 \2 T4 R7 C* A: lgen products must be considered and specific ques-
4 ]6 \: v* z* n& o# @7 t- V" ?tioning about the use of a testosterone product or
/ w) o3 y: M6 E* {2 ~gel should be asked of the family members during
6 }& d0 _; g. L, C( Rthe evaluation of any children who present with vir-
' H- G3 E0 J# h1 S2 j9 jilization or peripheral precocious puberty. The diag-
; b5 Y$ x# N$ u* i8 V& z" j) B2 ynosis can be established by just a few tests and by' D8 F: V* ]( G/ M# H) S
appropriate history. The inability to obtain such a) `- Y* |# V4 y$ D
history, or failure to ask the specific questions, may
4 O: @9 G4 p8 qresult in extensive, unnecessary, and expensive
; Z" |) }9 L0 o M, Winvestigation. The primary care physician should be3 a7 [8 [; _( u3 d+ X
aware of this fact, because most of these children4 s# ^: U' U1 x, `# {) B& W
may initially present in their practice. The Physicians’
" @# C3 Q% D8 |6 i9 j; v3 ]Desk Reference and package insert should also put a
9 I9 v; E5 c# _. S$ Awarning about the virilizing effect on a male or
- P! }! b3 n; b) ^& R2 b9 Q) K& tfemale child who might come in contact with some-) n( _$ J' M) B4 s2 U% O
one using any of these products.
# |+ W$ s+ Q; ^+ b$ s' E2 E( Y# uReferences
% j* F! Q3 v R5 r B m1. Styne DM. The testes: disorder of sexual differentiation
- m! e3 F& X3 s2 |1 s2 Q! R/ hand puberty in the male. In: Sperling MA, ed. Pediatric4 _8 U" x& q$ C' g" O ?" F# D9 }! T
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;8 B4 P! `# L/ i0 |
2002: 565-628.0 V+ u# A) s) d6 Z# f
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
2 N* i; T4 M9 kpuberty in children with tumours of the suprasellar pineal. v1 x) Q# j& Z9 o9 J- F
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
, P; ?6 t. i" E6 {( OTopical Testosterone Exposure / Bhowmick et al 5433 V! L9 G7 a ? s, h
areas: organic central precocious puberty. Acta Paediatr.: L& U) T+ @/ h. U
2001;90:751-756.1 R1 ~- H& H2 T4 e0 R
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
( e. G1 i( I( J/ _3 K9 WPediatric Endocrinology. 4th ed. New York, NY: Marcel
t x4 _4 S; S5 {Dekker Inc; 2003:211-238.4 s8 H4 x* | O5 O
4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
) m$ T( a+ h* x$ [( a3 `development in a two-year-old boy induced by topical8 z9 g' |& w. p/ @
exposure to testosterone. Pediatrics. 1999;104:e23.
4 P5 E& I8 g- F5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
B+ L, M0 ]# {' m+ C- ~! }* hSkeletal Development of the Hand and Wrist. 2nd ed.
. j( X% Q& L9 O6 l- @, RStanford, CA: Stanford University Press; 1959.
6 H+ v+ Y: w5 s6. Physicians’ Desk Reference. Androgel 1% testosterone,
7 c8 y7 K$ c) k1 `% e9 uUnimed Pharmaceutical Inc. Montvale, NJ: Medical
, L$ ?0 l |. U+ r6 lEconomics Company, Inc; 2004:3239-3241.8 S. X8 Q$ \; a3 E( |, K: P
7. Klugo RC, Cerny JC. Response of micropenis to topical
8 A6 Z! h7 q8 H6 A: w- ktestosterone and gonadotropin. J Urol. 1978;119:' T0 Y; N" }. t3 O0 H1 E0 v5 G- ^
667-668.
* ]( o) ~( D" M2 C, |3 J Z7 k8. Guthrie RD, Smith DW, Graham CB. Testosterone
- T* j" u" A( B, a0 o$ ~6 wtreatment for micropenis during early childhood. J Pediatr.
: i/ D" K1 m& |$ d2 L1973;83:247-252.$ o# M, b( _! l& l% Z
9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone
0 h5 S% w" b4 P' qtherapy for penile growth. Urol. 1975;6:708-710.
& m$ z5 @5 i6 Z* s10. Husmann DA, Cain MP. Microphallus: eventual phallic
& U5 Z& s7 ~& T) ~" K7 Nsize is dependent on the timing of androgen administra-
4 G" ~/ o# C# h" wtion. J Urol. 1994;152:734-739. @% u, V0 O( e
11. McMahon DR, Kramer SA, Husmann DA. Micropenis:, q2 T; Z0 x/ a# \; L% {0 }' h
does early treatment with testosterone do more harm
6 V3 h2 i6 [2 Z6 F5 Xthan good? J Urol. 1995;154:825-829.- C" j: n" U: ^- J8 m9 a% b
12. Takane KK, George FW, Wilson JD. Androgen receptor
! ^" p( k2 N2 F7 `% M- t9 p1 [, rof rat penis is down-regulated by androgen. Am J Physiol.! Y" z0 d" L$ F- x) _! L
1990;258:E46-E50.
1 B/ J. s5 b M1 H( f' E13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect
8 R( q' S* _& f% b! g" ?of prepubertal androgen exposure on adult penile
" U( O3 A$ t- H2 R. P3 F! f1 Glength. J Urol. 1996;156:783-787. |
|