- 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
* T" U& m6 A5 cprecocious puberty (CPP), which is mediated4 H) V" Z% S. W6 R+ x" T, D
through the hypothalamic pituitary gonadal axis, has; `+ E5 } v. o2 Q! T6 A0 F" R
a higher incidence of organic central nervous system
: @* P3 K* | \6 p1 `) {% H1 clesions in boys.1,2 Virilization in boys, as manifested9 l( M% _" r0 s- v. I
by enlargement of the penis, development of pubic0 Z% @& i6 p8 x8 [$ W4 D& O
hair, and facial acne without enlargement of testi-
9 r3 Y" `+ \, ?) c0 J& h8 w Zcles, suggests peripheral or pseudopuberty.1-3 We4 {" w1 ]/ h" D* }9 z ]
report a 16-month-old boy who presented with the2 A N5 `: c8 N0 f) O: r0 S6 V
enlargement of the phallus and pubic hair develop-
! ?) X( d" {6 L( B9 a& V$ @ment without testicular enlargement, which was due1 ]: \9 M( \# d, J e
to the unintentional exposure to androgen gel used by
6 J' E- w5 g6 H" E, o, fthe father. The family initially concealed this infor-
% S2 Y' s o' c$ \7 D" m. C$ qmation, resulting in an extensive work-up for this9 |) V r9 Z2 @+ @
child. Given the widespread and easy availability of
) u, w+ X/ z& \) T/ ktestosterone gel and cream, we believe this is proba-% C+ W- F3 z2 J- v( ?! R" A
bly more common than the rare case report in the
8 i/ b2 N' `; j/ Jliterature.4
, B% C9 h& |' r' m7 S+ } APatient Report
+ W% E1 R( z, D6 MA 16-month-old white child was referred to the
`0 H; j8 N# j o3 Z- c. yendocrine clinic by his pediatrician with the concern
o9 o& P, t* x& C. S( q1 o- t$ ~of early sexual development. His mother noticed3 z6 r; y5 r* ~; f1 A8 m
light colored pubic hair development when he was/ o: d7 Y- z' N) n5 f6 a, C3 w$ C+ R
From the 1Division of Pediatric Endocrinology, 2University of
9 P) Q* M1 P3 f* s; O+ tSouth Alabama Medical Center, Mobile, Alabama.
2 V/ |2 i, K5 z+ MAddress correspondence to: Samar K. Bhowmick, MD, FACE,
9 V# P( b6 P4 c# ], b' h3 w- }4 J# t$ R" hProfessor of Pediatrics, University of South Alabama, College of
1 p, U \* G. r) v' rMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
) n0 Q: j2 V8 n. Q Le-mail: [email protected].6 _: V* K6 ?9 c
about 6 to 7 months old, which progressively became; k; w' D$ @0 g. [0 M! F9 K- B9 s
darker. She was also concerned about the enlarge-
; x, P& ?% G$ n6 G# R5 tment of his penis and frequent erections. The child8 e1 k, {( j- O- `% ^9 N* F
was the product of a full-term normal delivery, with6 J, A) j H% ~) z1 b5 d
a birth weight of 7 lb 14 oz, and birth length of
2 A7 K' ~$ j2 Y2 l20 inches. He was breast-fed throughout the first year
3 K, B+ D$ F$ b% h) |of life and was still receiving breast milk along with
8 ]8 W& s1 e1 a) Tsolid food. He had no hospitalizations or surgery,9 ~3 a# ]2 y5 F* e
and his psychosocial and psychomotor development0 t# I, { w! `( ?9 U
was age appropriate.
1 U# Q% r2 R% }! z# ^The family history was remarkable for the father,% o' s5 p& y+ B5 G: S$ t% ~% C' E }
who was diagnosed with hypothyroidism at age 16,6 |( S' c% s+ B) w
which was treated with thyroxine. The father’s
, j8 A% e2 A" x5 }' N8 Yheight was 6 feet, and he went through a somewhat# v+ M. i5 x& a/ y. e
early puberty and had stopped growing by age 14.
1 Q0 K/ W* Z% t8 i' @9 W/ V6 KThe father denied taking any other medication. The
* f, E B- l4 C% z# Pchild’s mother was in good health. Her menarche& a. n, t4 P; @( E% l5 K
was at 11 years of age, and her height was at 5 feet) _2 b! T8 E3 p$ Y; P
5 inches. There was no other family history of pre-
. A, R' Q* @! m! r6 C" @2 Lcocious sexual development in the first-degree rela-. S' l% F0 r t# D. K4 W
tives. There were no siblings.
' n* ^" _/ I' SPhysical Examination
" ]4 B, p4 O8 {) c8 sThe physical examination revealed a very active,7 M% e7 B$ T" C# Z3 p# f
playful, and healthy boy. The vital signs documented
% l A9 o; p1 D V) Ea blood pressure of 85/50 mm Hg, his length was- A; q- e# }% |2 g5 ?
90 cm (>97th percentile), and his weight was 14.4 kg
3 ~! X' D* F# @+ F5 G* a( o% F5 X4 L(also >97th percentile). The observed yearly growth& c* _, v' G. a5 x$ M. Q( o. F
velocity was 30 cm (12 inches). The examination of5 }' `( G: k5 K: B4 _" h5 M3 S4 {
the neck revealed no thyroid enlargement.* D$ N5 @- A) q5 w" j
The genitourinary examination was remarkable for
. Z3 T1 M" @: Q! T9 denlargement of the penis, with a stretched length of# S( P9 ^6 x) J7 B1 o N
8 cm and a width of 2 cm. The glans penis was very well
5 W/ G1 ~7 s0 o: W( D: z0 T- Fdeveloped. The pubic hair was Tanner II, mostly around
; w) \( P% ]+ s. D* R/ T$ g540
$ c+ v9 O8 @. ^at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from) b( C$ r& `4 c1 k$ `
the base of the phallus and was dark and curled. The
/ o- `/ B- J% D3 jtesticular volume was prepubertal at 2 mL each.
1 q/ w2 d& H# ^ W; O+ AThe skin was moist and smooth and somewhat7 E1 _. q) P% k: j
oily. No axillary hair was noted. There were no9 I5 p) b) H9 P
abnormal skin pigmentations or café-au-lait spots.
6 u1 r- H* Z2 z" a' pNeurologic evaluation showed deep tendon reflex 2+
/ E) `- U* x/ t2 dbilateral and symmetrical. There was no suggestion
' _0 z! R, `- u4 V) C/ T+ ?: eof papilledema.) o) v0 ?9 i V& o6 v
Laboratory Evaluation4 X! e1 {* h& D! J0 z
The bone age was consistent with 28 months by: G6 b3 o/ ^9 ?# Y/ _
using the standard of Greulich and Pyle at a chrono-
4 R2 O- I- r$ t( ylogic age of 16 months (advanced).5 Chromosomal
" P/ |4 ~- P7 P/ P2 G7 h! w& Mkaryotype was 46XY. The thyroid function test( b$ u7 a( n# P: z, H
showed a free T4 of 1.69 ng/dL, and thyroid stimu-
) `4 ^3 v; q% ilating hormone level was 1.3 µIU/mL (both normal).
# N5 q) N: O1 t/ ^1 JThe concentrations of serum electrolytes, blood6 w5 \5 T+ a! V
urea nitrogen, creatinine, and calcium all were
: K1 [ `3 R- e+ o, L. D/ M4 N* |within normal range for his age. The concentration
8 z; I1 \, }# K3 E3 Iof serum 17-hydroxyprogesterone was 16 ng/dL
: S F9 I! ` P5 B. X3 j(normal, 3 to 90 ng/dL), androstenedione was 202 b- ?2 J r$ z; w9 K- e5 |! t
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-# S+ \. g" r1 b( P
terone was 38 ng/dL (normal, 50 to 760 ng/dL),; D6 g+ X( S' l$ u' O
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
4 x. e6 Y$ A% T& m49ng/dL), 11-desoxycortisol (specific compound S)9 M( J5 t8 f8 P( X, x
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-( s$ l; ]( p, v( P8 Q) [
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
5 A# @ p5 Z- q" S+ @0 \testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
" b2 ^3 ]1 g! ?7 yand β-human chorionic gonadotropin was less than/ q7 `' o; G2 o0 V( Z- N
5 mIU/mL (normal <5 mIU/mL). Serum follicular
0 ^$ @) y8 `$ ^" S% C! U. lstimulating hormone and leuteinizing hormone7 I2 y- W9 D* U# x1 b
concentrations were less than 0.05 mIU/mL: B! R+ g, W( Z7 j8 C4 x
(prepubertal). j, Y* `; h; ?6 r* ?6 W
The parents were notified about the laboratory
3 f9 J8 h/ k. n X: s8 q6 r2 B: Zresults and were informed that all of the tests were# O* h& d- b. B, {2 L1 Y
normal except the testosterone level was high. The# m7 K& p3 K/ ^4 U! y
follow-up visit was arranged within a few weeks to$ w1 U3 \8 q& I
obtain testicular and abdominal sonograms; how-; X6 N, x# |- Z" T
ever, the family did not return for 4 months.* i. M+ L: v N1 h- o4 c
Physical examination at this time revealed that the* _) P' K7 }9 I2 P
child had grown 2.5 cm in 4 months and had gained
% ]2 s3 y$ Q" X3 Z" U% D$ E4 N6 W2 kg of weight. Physical examination remained
p, p# @1 e1 \# x# d! Sunchanged. Surprisingly, the pubic hair almost com-( }! ]5 r' F/ o
pletely disappeared except for a few vellous hairs at
1 w3 k9 @% x+ `the base of the phallus. Testicular volume was still 2
5 Q( V1 l) u- z- b) q7 C7 M; k. U; PmL, and the size of the penis remained unchanged.
/ |$ `! }" |) S- X2 v, s# y3 EThe mother also said that the boy was no longer hav-- W/ A0 y# M5 b& _. { d
ing frequent erections.
4 E& |, S9 w$ n! n! dBoth parents were again questioned about use of- [5 \: V6 J$ ^5 r& }
any ointment/creams that they may have applied to
( ]3 E3 `6 ], [/ S+ [3 Z2 Wthe child’s skin. This time the father admitted the
% {. h3 O% @) l& ~: RTopical Testosterone Exposure / Bhowmick et al 541/ ~1 y, p6 f0 V
use of testosterone gel twice daily that he was apply-: h' e. Q' I$ U7 A! a
ing over his own shoulders, chest, and back area for! ]% ^% _% G! Z4 c$ l
a year. The father also revealed he was embarrassed
8 @- h5 a. k! E* d0 b1 ato disclose that he was using a testosterone gel pre-
$ R; |" ^/ G7 V3 ^$ G5 Yscribed by his family physician for decreased libido
# K4 A1 o$ ?! K. \' r' nsecondary to depression., L, h& @; w) ?. ~$ I- G& D0 a4 s
The child slept in the same bed with parents.
4 H y4 Z! T3 r0 M8 LThe father would hug the baby and hold him on his" g$ ^) N5 o: t5 d$ w: y4 y
chest for a considerable period of time, causing sig-. w6 {3 u; n% \2 q5 H4 ?
nificant bare skin contact between baby and father.
9 ?1 S. U$ T, j) k5 VThe father also admitted that after the phone call,
! h9 d, k' h" a5 j" u4 j+ ]: x Uwhen he learned the testosterone level in the baby
Q0 r5 n* ]: ~+ \7 B; d5 |was high, he then read the product information1 o* g4 `7 Y# s7 j
packet and concluded that it was most likely the rea-
J3 z& q/ s/ \: n4 z7 wson for the child’s virilization. At that time, they' G* k* N1 q# R! L: R9 J0 H0 \
decided to put the baby in a separate bed, and the/ R& I/ ?, I5 l/ _* F4 X
father was not hugging him with bare skin and had
8 z6 a2 _! }: X3 f/ `5 v, Nbeen using protective clothing. A repeat testosterone; W8 p; _* z& s$ \7 r4 [. _
test was ordered, but the family did not go to the
- l( n. M3 I$ y, @4 q, ylaboratory to obtain the test.0 \! e2 l& `; l% \3 H [ G" i2 m
Discussion
4 a0 J$ M3 @: A6 l9 F6 U0 \Precocious puberty in boys is defined as secondary
; j; M% u9 o7 P; ?sexual development before 9 years of age.1,4# Y7 y( _1 s7 \$ f
Precocious puberty is termed as central (true) when
: }" L) ^+ }7 |, ~+ V3 Wit is caused by the premature activation of hypo-' Q/ E: z1 w5 x6 \" B5 N' Z: Y
thalamic pituitary gonadal axis. CPP is more com-
" d4 `5 N" e0 f! o/ Ymon in girls than in boys.1,3 Most boys with CPP- |/ N2 B/ P0 t7 j' |* Q" e
may have a central nervous system lesion that is7 F$ H# T) ]# z! J1 f; p2 u
responsible for the early activation of the hypothal-
5 M* f1 X0 f: b% P) Q' c$ w7 [$ i4 V8 Tamic pituitary gonadal axis.1-3 Thus, greater empha-0 G) ~6 J: H5 L% [9 h
sis has been given to neuroradiologic imaging in
4 s* [/ @' h! M& Y# ?boys with precocious puberty. In addition to viril-! o# J9 z8 M, U. K9 f3 d) z, Y/ M
ization, the clinical hallmark of CPP is the symmet-
0 A* i; c! v# B+ J4 s% M0 Zrical testicular growth secondary to stimulation by
- x9 A% [7 {+ Tgonadotropins.1,3# }* n; D: o6 T: N
Gonadotropin-independent peripheral preco-, ?) l& T$ o1 D7 p" t$ G
cious puberty in boys also results from inappropriate, ?' q% ?6 J" o- P1 r4 h
androgenic stimulation from either endogenous or
0 g; A- S, m6 }% m% o3 s, |1 Bexogenous sources, nonpituitary gonadotropin stim-
, G! ?1 I- [4 p Wulation, and rare activating mutations.3 Virilizing
2 j% Y* z* S" h4 D; d. B, jcongenital adrenal hyperplasia producing excessive
& M, O$ ]0 q8 a- \9 R3 e- K% Fadrenal androgens is a common cause of precocious
; x: d+ N' i( O- {! h7 E/ F- k) Wpuberty in boys.3,4
W& m& y7 Q/ JThe most common form of congenital adrenal6 _; G, s0 ~5 m1 x, m; X$ Y) I
hyperplasia is the 21-hydroxylase enzyme deficiency.
5 _3 B7 ~" Y7 ]( EThe 11-β hydroxylase deficiency may also result in! j6 `, }+ v; e# i. V
excessive adrenal androgen production, and rarely,
9 g8 e/ U" r6 f. X) b: van adrenal tumor may also cause adrenal androgen6 t! ~( [3 [$ d
excess.1,3
6 `% M: O3 n7 Y1 f! s5 @8 bat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from4 K$ C$ _; Y5 L
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
$ ?9 u/ Q) h( h+ V4 C+ ]' MA unique entity of male-limited gonadotropin-* i/ |3 x0 i' K- |+ X" c1 g S: e
independent precocious puberty, which is also known
+ h" v. T$ m. M! U/ _- ?+ Yas testotoxicosis, may cause precocious puberty at a) {2 f1 v* u: q3 N# Y/ G; a
very young age. The physical findings in these boys
( _8 {+ U* c) b. a( S" d" I$ Gwith this disorder are full pubertal development,
) I& I' i& ?# j: g% N- ~8 cincluding bilateral testicular growth, similar to boys
, @! m% L+ ]3 N* Q) D$ p3 B3 J0 Nwith CPP. The gonadotropin levels in this disorder
, Z" j8 F2 ~: @7 X% v4 K1 k, ]are suppressed to prepubertal levels and do not show. i! g2 V* E7 b# ~2 M% v0 L& R
pubertal response of gonadotropin after gonadotropin-+ u5 q( p6 m h7 H: e& o
releasing hormone stimulation. This is a sex-linked. |7 w* s) s! n0 u
autosomal dominant disorder that affects only
: {3 r8 K& f8 `. A: F1 c0 L3 }1 Zmales; therefore, other male members of the family
o- w Q$ G9 C9 j; [- E4 Nmay have similar precocious puberty.3
5 n8 p' k/ T4 O' l7 l w5 c3 t3 W7 dIn our patient, physical examination was incon-8 L) F) N! J8 W6 r) u \4 n
sistent with true precocious puberty since his testi-( G& S( Z j7 g" k' L3 p
cles were prepubertal in size. However, testotoxicosis
9 K$ P6 j A$ U ewas in the differential diagnosis because his father
Y% s5 \; M5 J9 A; ~8 Q; V' X7 \ Ostarted puberty somewhat early, and occasionally,! `8 e! A2 r' U
testicular enlargement is not that evident in the, j* m; G+ p2 c, W- U$ `
beginning of this process.1 In the absence of a neg-7 C1 |* P) d: F" u" e& Z) S" T0 Q
ative initial history of androgen exposure, our4 J6 H( ~3 j t6 p( B/ _
biggest concern was virilizing adrenal hyperplasia,
. b* X& M; W: M* H" Teither 21-hydroxylase deficiency or 11-β hydroxylase) g: W3 R' F4 X- U6 p
deficiency. Those diagnoses were excluded by find-
; [9 P# c# p' `9 Z* Uing the normal level of adrenal steroids.
: s4 d6 f8 e" `, d6 S, gThe diagnosis of exogenous androgens was strongly. q; B1 k) N8 e/ w4 y4 z# b$ j
suspected in a follow-up visit after 4 months because/ N5 k: W8 b- R! r/ B5 a* F4 ]
the physical examination revealed the complete disap-
, a: v. Q: m9 @" Bpearance of pubic hair, normal growth velocity, and
( g+ h9 {/ m) y- Z* ?5 \decreased erections. The father admitted using a testos-
1 q( r1 h+ r3 ] gterone gel, which he concealed at first visit. He was
. F! t7 z ]0 x$ n$ V7 P/ z2 R( u1 nusing it rather frequently, twice a day. The Physicians’) v2 ?+ c0 R) J; @( z
Desk Reference, or package insert of this product, gel or
, | W, H$ S! g) g5 `) ?. \cream, cautions about dermal testosterone transfer to
* ~- R; F' S) Eunprotected females through direct skin exposure.
7 h0 F* P9 c7 |. i/ W6 _4 H0 |Serum testosterone level was found to be 2 times the
/ p9 N: H" I; Dbaseline value in those females who were exposed to" r) g w/ r* D, a/ H$ m, L
even 15 minutes of direct skin contact with their male1 h( z$ E3 @! u) d
partners.6 However, when a shirt covered the applica-* q8 Z( g3 J& e3 c5 X* N
tion site, this testosterone transfer was prevented.
2 V9 |. F3 b0 T' m" ?Our patient’s testosterone level was 60 ng/mL,
& u* M/ P6 y9 \' uwhich was clearly high. Some studies suggest that4 {' v7 Y9 A3 X9 P& J
dermal conversion of testosterone to dihydrotestos-
. O: Y7 A. ^( J3 s) j, kterone, which is a more potent metabolite, is more* G: ]0 g4 \* g) V/ n- J: u; z
active in young children exposed to testosterone
; }8 Q8 `/ L2 ]5 }. o" }& l1 Mexogenously7; however, we did not measure a dihy-' i9 I& |. G( O1 j3 ^1 o
drotestosterone level in our patient. In addition to
3 E" }! P9 ^- a$ ?virilization, exposure to exogenous testosterone in
( b' X6 _ P6 O8 G B Mchildren results in an increase in growth velocity and5 f- d1 n1 V# G
advanced bone age, as seen in our patient.
: x B1 }1 f, J/ m# x0 Q% z7 X0 RThe long-term effect of androgen exposure during) {/ q4 o+ a' X- y; G
early childhood on pubertal development and final
|: v% z l1 O! Z8 Tadult height are not fully known and always remain
. z2 G; F7 H+ }$ Ea concern. Children treated with short-term testos-
8 e ?4 v% @; U, X& [terone injection or topical androgen may exhibit some @. d9 c; Y+ z# X6 T$ m: S+ s
acceleration of the skeletal maturation; however, after7 |, p2 B- F3 g2 c
cessation of treatment, the rate of bone maturation
- {& ?) b3 y9 s q" t+ [! _ Kdecelerates and gradually returns to normal.8,9
1 M4 k# e0 X8 P: e) b& iThere are conflicting reports and controversy
; M) r( @2 r o6 m. b& |0 `over the effect of early androgen exposure on adult, E$ x# R8 _3 W$ Q! }
penile length.10,11 Some reports suggest subnormal
/ z J" S" ]$ H L& S' Uadult penile length, apparently because of downreg-! J, d) E" D. z, q$ ]8 E
ulation of androgen receptor number.10,12 However,
9 j D2 F I _Sutherland et al13 did not find a correlation between8 R0 D$ r5 r, Z* l2 _9 X# Q5 m
childhood testosterone exposure and reduced adult
, v0 O0 s9 w" ^ ?penile length in clinical studies.# d# {5 W) Q. M: m9 a% c
Nonetheless, we do not believe our patient is: L; i1 Z( f. N# e. l5 C
going to experience any of the untoward effects from; z* x, w# U; \: Y+ B" S
testosterone exposure as mentioned earlier because N7 Y* b" r8 r2 G1 \; c
the exposure was not for a prolonged period of time.$ Z9 c0 c. D# D9 u) ], |( `2 |
Although the bone age was advanced at the time of' A; b" \ K; n) O+ J
diagnosis, the child had a normal growth velocity at" h) x& o l% B: J
the follow-up visit. It is hoped that his final adult/ V, z& y6 `7 g5 [8 Q
height will not be affected.2 P) T ~- Y1 L: `+ r5 Z h
Although rarely reported, the widespread avail-2 m7 p! Z, E, f [- H* r; L
ability of androgen products in our society may; Z* E' ^$ J) E. L4 s" q, A" X
indeed cause more virilization in male or female, ^( k4 ~9 H, |" D
children than one would realize. Exposure to andro-' U( ~: x* ?' W7 H8 l5 e
gen products must be considered and specific ques-. u$ y( m6 U' W
tioning about the use of a testosterone product or0 _; R- |5 r' Y! } o
gel should be asked of the family members during
" }" Y1 ]1 J- A6 h+ }the evaluation of any children who present with vir-
0 [0 w' ?. T2 L4 l7 @. milization or peripheral precocious puberty. The diag-
6 t- M) V& L! ]) K8 l8 Y1 B+ ]nosis can be established by just a few tests and by
& S9 p$ ?6 }* _- U/ {' jappropriate history. The inability to obtain such a4 J/ v4 d5 u |! V L) K" G
history, or failure to ask the specific questions, may
8 h4 q T& B3 z# Oresult in extensive, unnecessary, and expensive( [, z3 A4 d0 I6 r
investigation. The primary care physician should be* ]0 X! W% z+ P; R; C
aware of this fact, because most of these children
7 L+ N( V$ K% B" C4 imay initially present in their practice. The Physicians’ M! d3 @6 ~$ z u, v- h
Desk Reference and package insert should also put a
" ^5 ` Z7 ?- o4 b% Iwarning about the virilizing effect on a male or
5 b: b9 ~ v. b. Ifemale child who might come in contact with some-
# C* h% G# C4 V- @8 Z5 }one using any of these products.3 V8 a5 ]5 i" n3 `/ P! U; U" O: n
References+ Q5 i+ o' U& ?: o: S6 N$ n
1. Styne DM. The testes: disorder of sexual differentiation: F3 A, f. O( @& } ]
and puberty in the male. In: Sperling MA, ed. Pediatric; G+ m# X5 Y" C4 S/ c
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;5 D, b" G6 K7 l. B, `) y
2002: 565-628.
, @# U. {% A# K3 H1 y' r. b; ]% T C2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
( @% Q0 H9 }3 x1 lpuberty in children with tumours of the suprasellar pineal% g5 ~5 M: k n5 N5 E9 v
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from/ d; [8 @7 h! h; U1 s6 K
Topical Testosterone Exposure / Bhowmick et al 543) N' z3 P) Q& c: }
areas: organic central precocious puberty. Acta Paediatr.
- Y, u9 w- Z0 x. U2 `- l2001;90:751-756.
; `6 r- w+ d$ S Y- J; m3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.: ~; m' Z: G! ]7 Z2 i1 e5 o
Pediatric Endocrinology. 4th ed. New York, NY: Marcel
! f% W" }* X9 e6 t' WDekker Inc; 2003:211-238.
* y( f2 _* {5 }' J* B4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
: F5 O2 F: v r; U9 J- vdevelopment in a two-year-old boy induced by topical
4 i: G& M/ w4 Qexposure to testosterone. Pediatrics. 1999;104:e23.* w# z+ B6 [& D$ b0 W
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
( m9 ?" {( R7 [& s* rSkeletal Development of the Hand and Wrist. 2nd ed.& A! v* ]0 a- n! Z: I
Stanford, CA: Stanford University Press; 1959./ x$ Q& ?# d6 O+ ]1 W
6. Physicians’ Desk Reference. Androgel 1% testosterone,* }! \+ _5 H. P
Unimed Pharmaceutical Inc. Montvale, NJ: Medical% E d; S# P0 U; B
Economics Company, Inc; 2004:3239-3241.
$ n7 b' d; a3 p' j) _* a7. Klugo RC, Cerny JC. Response of micropenis to topical) _8 `, Y2 _5 T/ I
testosterone and gonadotropin. J Urol. 1978;119:# |+ D& ]! y) Z M4 s
667-668.2 z; ^2 Z9 Q/ R6 }7 d3 T* S- l
8. Guthrie RD, Smith DW, Graham CB. Testosterone
/ E) r- [% N2 j: j4 e1 H+ Ktreatment for micropenis during early childhood. J Pediatr.
: Z( H5 I1 p( a1973;83:247-252.
; S- U: d3 V: Q8 v) ]$ R- m1 A9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone3 A# L' _. f$ N" B9 c
therapy for penile growth. Urol. 1975;6:708-710.
7 d* Z- S4 b, E$ u! a4 U+ T. p10. Husmann DA, Cain MP. Microphallus: eventual phallic
# S z9 r, p7 Xsize is dependent on the timing of androgen administra-! w4 s, B1 G7 i, H; ] N0 @
tion. J Urol. 1994;152:734-739.3 q2 j# |/ j: c8 A; w- S
11. McMahon DR, Kramer SA, Husmann DA. Micropenis:
" p7 `( A- @1 kdoes early treatment with testosterone do more harm
5 n4 {3 w# H. G- g* E8 Ethan good? J Urol. 1995;154:825-829.* Z4 @8 m, @4 y- E# O
12. Takane KK, George FW, Wilson JD. Androgen receptor8 ~$ r7 t+ Z+ C0 n: P
of rat penis is down-regulated by androgen. Am J Physiol.& v. ]( f7 \) l4 i: B. s9 X: b' a
1990;258:E46-E50.
w, R) @7 p8 b# {2 ~; Y* [0 D13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect# Z5 F- H% F' i) l! p. x& D4 I5 {
of prepubertal androgen exposure on adult penile
) P' f: x! t# a# n- q! {3 Dlength. J Urol. 1996;156:783-787. |
|