- 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, T4 D' p: i7 ]5 Y
precocious puberty (CPP), which is mediated
% `+ ^2 v, v; k! q' ~" Qthrough the hypothalamic pituitary gonadal axis, has
' A C7 O; s$ A3 A) A- Z4 c! R5 ]a higher incidence of organic central nervous system- c) U+ u& k/ c+ Y1 h" b# g7 t$ g
lesions in boys.1,2 Virilization in boys, as manifested
7 J2 }) y8 C9 y/ R8 ~$ h2 sby enlargement of the penis, development of pubic9 E, A8 a1 P: ~6 N
hair, and facial acne without enlargement of testi- ]+ ]4 S" n9 B3 u
cles, suggests peripheral or pseudopuberty.1-3 We# o' X( N- p) k2 |
report a 16-month-old boy who presented with the
+ i; S9 ]/ v8 X; m" a0 fenlargement of the phallus and pubic hair develop-
- m' i/ P' Z- Q1 ?. Y& |1 ^# [ment without testicular enlargement, which was due
+ K* ~6 G4 {2 s9 L7 u' V5 zto the unintentional exposure to androgen gel used by
8 p& J' g1 Q. D% y0 hthe father. The family initially concealed this infor-
# q( e+ }% B/ w" q% @0 F6 Vmation, resulting in an extensive work-up for this
( O9 u; A6 R+ ?0 h! _3 |5 Achild. Given the widespread and easy availability of
0 m) C, \3 S o: ptestosterone gel and cream, we believe this is proba-
& O: q1 M: l% ], _. L( `5 S7 t4 obly more common than the rare case report in the+ F6 {/ E- P0 O& E
literature.4
) O5 R0 @3 x" N- X J4 oPatient Report
5 D. B4 d4 f7 p& A3 H! XA 16-month-old white child was referred to the
6 L2 ]: ?: Y# f$ ]: Xendocrine clinic by his pediatrician with the concern& J4 }" C. E5 M5 i' L& @" H
of early sexual development. His mother noticed
, X; F; Z7 P. dlight colored pubic hair development when he was; y: _) o, {+ X! L) D* c$ ?
From the 1Division of Pediatric Endocrinology, 2University of
F# g. N) k1 Z3 _: _% RSouth Alabama Medical Center, Mobile, Alabama.
: k: t8 r/ M- L+ w0 ^4 B1 T5 tAddress correspondence to: Samar K. Bhowmick, MD, FACE,$ x$ F- V( J' x. s0 n
Professor of Pediatrics, University of South Alabama, College of
( P0 J. T0 d* O& }Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;1 B# C& C$ H4 v8 ]# Z( x9 d
e-mail: [email protected].
# P/ o [1 E0 P* H' b3 mabout 6 to 7 months old, which progressively became4 `+ P. O) G: C' C( ^3 @
darker. She was also concerned about the enlarge-$ I! w: m& L9 @; B5 p. P+ U% x
ment of his penis and frequent erections. The child
. L4 F# M' X4 B6 n4 w w" Z+ xwas the product of a full-term normal delivery, with& B6 l7 K& a) X# S4 u' W- x* F
a birth weight of 7 lb 14 oz, and birth length of& A5 n" Y0 Z- o/ \
20 inches. He was breast-fed throughout the first year
, ? J( O% h+ Q, j* ~) z5 pof life and was still receiving breast milk along with5 k9 ~- c/ v: I0 a2 V
solid food. He had no hospitalizations or surgery,$ |0 i# g1 u! E$ L8 g
and his psychosocial and psychomotor development
: n4 ], {: d5 J7 M: T& E8 }0 d+ swas age appropriate.3 y, O- n8 [ o
The family history was remarkable for the father,7 q1 K9 a& O3 q: _1 N2 P0 Y* V
who was diagnosed with hypothyroidism at age 16,2 ]. p' l- J0 k% e' F
which was treated with thyroxine. The father’s3 x' L$ W: c' v
height was 6 feet, and he went through a somewhat
! }4 P: ~- b1 b- s3 E; ?early puberty and had stopped growing by age 14.
. R1 v* N1 ~5 v: jThe father denied taking any other medication. The$ b5 G6 W8 q: Y
child’s mother was in good health. Her menarche
7 f/ z6 \7 U0 y: d W6 R- q- K4 Awas at 11 years of age, and her height was at 5 feet, z$ {3 F* n: a3 r
5 inches. There was no other family history of pre-. ]$ i. F! y3 `5 G( j, W
cocious sexual development in the first-degree rela-
! \5 B1 a8 `: H8 l( N T8 Atives. There were no siblings.
& t0 E* V! r" CPhysical Examination
0 _. T% R6 m' L! ^2 C6 A1 b! X0 aThe physical examination revealed a very active,2 m8 `, a% S8 ~8 s+ J0 v
playful, and healthy boy. The vital signs documented T3 b' P+ t: p8 n: b/ v/ l
a blood pressure of 85/50 mm Hg, his length was
- Q+ z1 F& r" t0 S7 Z" k$ {90 cm (>97th percentile), and his weight was 14.4 kg2 T# d$ n9 E* n) i4 ~0 R
(also >97th percentile). The observed yearly growth
4 i; }+ a# K& Bvelocity was 30 cm (12 inches). The examination of. A: K1 j+ ~' w( P6 z5 ?
the neck revealed no thyroid enlargement.5 R! ^: i. `# f! J$ W9 P7 f. |- \
The genitourinary examination was remarkable for! L8 S, D, W6 j7 m% Q
enlargement of the penis, with a stretched length of1 _3 ~( [& T; i. ?; a
8 cm and a width of 2 cm. The glans penis was very well
7 l' q6 w5 K' r) E, S& e1 ldeveloped. The pubic hair was Tanner II, mostly around; _% L/ y9 A ~0 } X$ x' X
540$ B. [2 v; \# Q) }6 k9 C
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from/ I0 ~9 y# V$ }/ y" R9 }4 G
the base of the phallus and was dark and curled. The
0 A: |4 N! H( u/ l8 F3 \0 Ttesticular volume was prepubertal at 2 mL each.
- G! ^8 w. u1 o* V" C" [, L0 \% e7 MThe skin was moist and smooth and somewhat
% d2 N6 ?+ O6 j2 W6 Qoily. No axillary hair was noted. There were no+ c& H% H$ \" e7 O( E4 i" n6 `
abnormal skin pigmentations or café-au-lait spots.2 M1 P0 [! T. u) G( \7 a" Q
Neurologic evaluation showed deep tendon reflex 2+7 v0 t2 F+ r6 c: \
bilateral and symmetrical. There was no suggestion6 F1 c" }# e0 Z9 _% K8 w
of papilledema.$ S7 [0 U8 L6 w7 I2 ~/ c4 ~
Laboratory Evaluation, a6 x. g& i7 _2 x
The bone age was consistent with 28 months by' s7 a( v: M, n5 c
using the standard of Greulich and Pyle at a chrono-! F8 I) c1 }/ G! `. y# `5 d8 P; z
logic age of 16 months (advanced).5 Chromosomal! s/ t5 {4 t W' ?! J+ w8 I
karyotype was 46XY. The thyroid function test U* }1 [/ F3 K. X
showed a free T4 of 1.69 ng/dL, and thyroid stimu-4 T6 ]6 P& I. D7 N& b, C% a+ ~/ A
lating hormone level was 1.3 µIU/mL (both normal).
& t q5 e b J1 @# QThe concentrations of serum electrolytes, blood
& S' u! M9 D3 M/ ~urea nitrogen, creatinine, and calcium all were
6 ~+ G& |! I( D$ v& F _5 vwithin normal range for his age. The concentration
. I3 W# a' c( s- Y8 Iof serum 17-hydroxyprogesterone was 16 ng/dL
7 \; g" D( n7 x(normal, 3 to 90 ng/dL), androstenedione was 20/ q2 q9 j) Y. O( m& Q; Y
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-! n* v# r3 g9 v6 v6 L% {
terone was 38 ng/dL (normal, 50 to 760 ng/dL),
) S; R4 _6 f! `( mdesoxycorticosterone was 4.3 ng/dL (normal, 7 to. [5 r* v1 p8 Q8 E
49ng/dL), 11-desoxycortisol (specific compound S)
, V( i6 n& Z3 L3 \" e- Iwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-2 l3 |; r, j! f+ a
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
, v: ^. Y! _# utestosterone was 60 ng/dL (normal <3 to 10 ng/dL),7 e$ k4 W) O1 E- G' r0 K. m
and β-human chorionic gonadotropin was less than- W: u C6 S" O4 R) `) T! V/ k; e
5 mIU/mL (normal <5 mIU/mL). Serum follicular$ Z. V5 H2 ~( L3 r) B. W
stimulating hormone and leuteinizing hormone& o9 k2 W- |2 v2 T
concentrations were less than 0.05 mIU/mL! d. P2 A: s' I4 |2 k' U# `
(prepubertal).4 A( Y3 m! K3 \: o5 X( ]/ J- h
The parents were notified about the laboratory- Z% R, K1 H" m
results and were informed that all of the tests were
6 G( i' P' g# z6 I7 Hnormal except the testosterone level was high. The
/ u9 `+ T p( R# ^7 Mfollow-up visit was arranged within a few weeks to
: L; v$ p- A+ b2 p, O' e" Q, qobtain testicular and abdominal sonograms; how-3 z1 v l: k2 s/ Q# a5 a( Z# P
ever, the family did not return for 4 months.$ p! Q) A: S' b9 K1 D) F; {# R
Physical examination at this time revealed that the% u" o% B f. H+ a' _& m. t
child had grown 2.5 cm in 4 months and had gained& B3 r7 c/ G D/ E# o
2 kg of weight. Physical examination remained
3 ] o7 }# t0 U9 yunchanged. Surprisingly, the pubic hair almost com-( d9 H/ u2 q, {; G+ `/ S7 [
pletely disappeared except for a few vellous hairs at
8 Q- C& ~. O4 h, v4 G- pthe base of the phallus. Testicular volume was still 2
! c6 B! u! N5 Q) x1 M6 u2 Z$ o( kmL, and the size of the penis remained unchanged.; f) ^. K- o& G" E& k( c
The mother also said that the boy was no longer hav-
, T% M9 g2 h2 King frequent erections.
9 y3 `5 G" d* a4 p% OBoth parents were again questioned about use of
0 \: q) q* Z& Y$ w; w0 e% m& Kany ointment/creams that they may have applied to2 W, T$ v% M+ v* w o
the child’s skin. This time the father admitted the- `; @' C( k9 c7 r. o
Topical Testosterone Exposure / Bhowmick et al 541
7 U3 ~* `, H$ p7 j- K; j3 ouse of testosterone gel twice daily that he was apply-# b0 I# L% H3 k4 l
ing over his own shoulders, chest, and back area for8 t* r; |. }# A" l9 E, Z* x. U5 K2 m
a year. The father also revealed he was embarrassed
% S. x7 Q: J3 f; A1 Lto disclose that he was using a testosterone gel pre-/ B9 b4 t/ B7 p( l
scribed by his family physician for decreased libido
. M' H8 J( O' f$ Jsecondary to depression.
! d) ]* R7 e! _The child slept in the same bed with parents.4 x$ D% O4 J l8 o) C6 y. u& {8 A5 S
The father would hug the baby and hold him on his6 M ~8 a b" W4 h* V4 m4 f8 ?2 @
chest for a considerable period of time, causing sig-6 ^0 H1 A9 k1 h5 j& V$ H1 g
nificant bare skin contact between baby and father.
/ ]. ], n& ?* b4 cThe father also admitted that after the phone call,
+ v1 q* L, O: _& }when he learned the testosterone level in the baby
+ u: n5 D u4 D) ^! d. Gwas high, he then read the product information
- Y0 N8 u, t9 h1 j/ g: c5 jpacket and concluded that it was most likely the rea-; {' T% D* n/ D/ W
son for the child’s virilization. At that time, they/ H% j: j% L2 O- W- z; |$ R' o
decided to put the baby in a separate bed, and the
; u7 F6 i' D. b! O) v6 A2 nfather was not hugging him with bare skin and had& x5 d" X4 r& n2 ~
been using protective clothing. A repeat testosterone
^- G$ q+ B0 G0 y/ F/ M" k4 ftest was ordered, but the family did not go to the
+ [7 m5 m% K8 u" ?: a& O' jlaboratory to obtain the test.
# d* C0 Q2 G% C C1 T+ P1 gDiscussion) o. v. C: i8 \( Z
Precocious puberty in boys is defined as secondary8 U2 C9 V' ?4 y8 g2 k& F( t* x2 w
sexual development before 9 years of age.1,4$ _ H* R$ ?8 {
Precocious puberty is termed as central (true) when
: x8 A0 g& {. i; Q0 ?( Qit is caused by the premature activation of hypo-4 B% q2 U4 F3 |+ R+ \, F
thalamic pituitary gonadal axis. CPP is more com-" I$ T+ I( u- t8 r
mon in girls than in boys.1,3 Most boys with CPP
+ M/ |: ?. U( | E1 E& |9 ymay have a central nervous system lesion that is. u# M" J+ v$ r* R
responsible for the early activation of the hypothal-
) o& g. Q: ^6 V- ]amic pituitary gonadal axis.1-3 Thus, greater empha-; B8 v+ F; I. B3 G
sis has been given to neuroradiologic imaging in: q _3 A$ b# k
boys with precocious puberty. In addition to viril-
: q6 T/ L; f' l- q; s! ?5 J9 nization, the clinical hallmark of CPP is the symmet-8 q& r% e4 r% @6 _- P" }
rical testicular growth secondary to stimulation by0 v+ O. [* q+ ^; N* q
gonadotropins.1,3# B" a2 r4 C* B4 g! F
Gonadotropin-independent peripheral preco-! U' h( I, R3 ^3 t
cious puberty in boys also results from inappropriate
2 w+ j* v3 N2 I! ^' ]8 K2 t& U Pandrogenic stimulation from either endogenous or
9 _; Q0 ~" ~2 L4 P8 F2 t: V& t wexogenous sources, nonpituitary gonadotropin stim-0 a" A" ^3 \# O. o
ulation, and rare activating mutations.3 Virilizing
! [: X4 k+ ^8 @; s9 P$ l" _& j- Fcongenital adrenal hyperplasia producing excessive
. A' b% M7 Z! X; ~adrenal androgens is a common cause of precocious6 i3 T7 ^$ f5 d ?" M: m3 A* u; {
puberty in boys.3,4" d9 ?# F- Y( k4 G1 f- |% o2 q
The most common form of congenital adrenal, A8 a1 X# M* o) }4 y9 N6 I* P
hyperplasia is the 21-hydroxylase enzyme deficiency.! b, ~2 e2 o1 f' v6 U3 ~5 l4 U
The 11-β hydroxylase deficiency may also result in6 H: g3 a: a9 ?3 D6 }% g
excessive adrenal androgen production, and rarely,- d6 c& c& w& R7 f- M- ?" f5 R s
an adrenal tumor may also cause adrenal androgen/ a$ \) [7 {5 l. l5 S; H0 r
excess.1,37 B, A# ?0 f, P- J! c
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
+ \: n$ X) e) ]2 i9 e542 Clinical Pediatrics / Vol. 46, No. 6, July 2007* c" m8 R( F5 K
A unique entity of male-limited gonadotropin-8 m* d$ ?8 C! k
independent precocious puberty, which is also known
" p3 J k1 E# y" X% Xas testotoxicosis, may cause precocious puberty at a5 r9 R1 D+ l. v; @& K
very young age. The physical findings in these boys: e, ?2 C% X- y; m2 g4 j1 {5 a( K
with this disorder are full pubertal development,* g5 q9 R! n3 f! t/ Y' H& }5 O
including bilateral testicular growth, similar to boys
) u& r! y9 P, [1 f& K- D6 {$ owith CPP. The gonadotropin levels in this disorder$ w% m' S" ~$ `
are suppressed to prepubertal levels and do not show
0 T8 v- }) r* t& U: M9 C$ xpubertal response of gonadotropin after gonadotropin-/ n3 m* ?$ ^6 l: k3 l0 e
releasing hormone stimulation. This is a sex-linked& ]* x/ k' p! e& D* d. l3 }
autosomal dominant disorder that affects only# L7 V0 l; o& b) D1 |; g- _
males; therefore, other male members of the family
# j4 |) t) S; i R2 B5 nmay have similar precocious puberty.3
1 x5 I- M2 e. n. ]In our patient, physical examination was incon-1 i7 P6 G2 ]% _0 @7 E$ Z
sistent with true precocious puberty since his testi-
& s) Y# |( Z; P) T9 ucles were prepubertal in size. However, testotoxicosis3 E# P- T I, H" y2 A* ?2 ^
was in the differential diagnosis because his father
4 c/ N+ k9 n1 u0 Ystarted puberty somewhat early, and occasionally,
; t; G8 B5 r" I. f4 }testicular enlargement is not that evident in the0 B2 H0 T# } Q# t9 e
beginning of this process.1 In the absence of a neg-
; a: B3 S( _% `& j3 Rative initial history of androgen exposure, our
0 B& H6 L- ^1 C6 l* x2 K/ \1 _biggest concern was virilizing adrenal hyperplasia,
' ~. X6 S- d& heither 21-hydroxylase deficiency or 11-β hydroxylase7 d7 x4 ^& }2 m0 q! e o3 a1 ]
deficiency. Those diagnoses were excluded by find-0 T: ?( @# \" J, v/ L! \5 p
ing the normal level of adrenal steroids.
! w. S9 g+ ^! vThe diagnosis of exogenous androgens was strongly2 z8 u9 H* x8 y! R. x
suspected in a follow-up visit after 4 months because
! c |7 y( G! x! `. u( P. S) qthe physical examination revealed the complete disap-
) @/ }7 V5 \8 Z# W1 Spearance of pubic hair, normal growth velocity, and
: c- p7 C/ B/ V: p- B2 vdecreased erections. The father admitted using a testos-
/ R/ Z4 h3 q6 s: Pterone gel, which he concealed at first visit. He was/ s$ i, Y1 H5 T: l+ Q. R
using it rather frequently, twice a day. The Physicians’
2 L& ^( @7 i6 @7 v9 r5 `Desk Reference, or package insert of this product, gel or7 q0 @, T( e5 _9 ` W0 T4 a
cream, cautions about dermal testosterone transfer to
2 n8 K/ W+ A% punprotected females through direct skin exposure.
, W. D7 V) p: e! nSerum testosterone level was found to be 2 times the
$ C: n0 p" s! g0 m$ N( Ebaseline value in those females who were exposed to
( j8 N7 s) m( B6 geven 15 minutes of direct skin contact with their male' P9 n+ N+ Z Q0 l( m2 r/ p. O4 L
partners.6 However, when a shirt covered the applica-) }% S B% e4 { U) \
tion site, this testosterone transfer was prevented.
/ [8 d" R5 D) T3 M" A! F( tOur patient’s testosterone level was 60 ng/mL,( _* Q, R; @ t/ v; D$ `
which was clearly high. Some studies suggest that/ x* C$ a4 i7 \9 ?
dermal conversion of testosterone to dihydrotestos-5 C+ L, o1 ?: u' e' q
terone, which is a more potent metabolite, is more& G% a- _2 _* A1 Z1 m& i
active in young children exposed to testosterone
2 Q3 H8 K5 k# Y& h& Rexogenously7; however, we did not measure a dihy-
, b$ _4 e2 c: tdrotestosterone level in our patient. In addition to0 M& q3 q$ f( n' H
virilization, exposure to exogenous testosterone in
9 u9 I& |0 `; K* h2 S8 Zchildren results in an increase in growth velocity and
7 ^% g% o. Y$ p% hadvanced bone age, as seen in our patient.! c* F4 j! r) {0 G* T7 b8 t& |
The long-term effect of androgen exposure during
2 R$ S# S8 S: y- A% ?) y* Cearly childhood on pubertal development and final
6 W5 D+ O" s% C4 jadult height are not fully known and always remain+ k; a4 D" g( U
a concern. Children treated with short-term testos-3 F- c' i" I* ?% z) u7 e7 ^
terone injection or topical androgen may exhibit some
8 g2 P- N- ]- ^) K4 Q2 @acceleration of the skeletal maturation; however, after4 f1 d9 X7 g) T4 l6 a$ I
cessation of treatment, the rate of bone maturation
, O1 ^/ Q. C5 ?2 C# y8 ^decelerates and gradually returns to normal.8,9
3 N( C7 r. Q5 a' ^* q* Y- \There are conflicting reports and controversy
) B. w2 u8 M P. F3 v7 Iover the effect of early androgen exposure on adult
# M" V$ z3 l: c( t' J+ X3 s, Ipenile length.10,11 Some reports suggest subnormal, ]) d" H J# ^, M8 a7 h
adult penile length, apparently because of downreg-9 h/ g: L6 J2 ^4 m: R( Z# k
ulation of androgen receptor number.10,12 However,+ M6 {( {& m% J2 p* X# H5 O
Sutherland et al13 did not find a correlation between% j f* p( W/ V- \
childhood testosterone exposure and reduced adult
. x! L- Q7 E% B4 L5 Ppenile length in clinical studies.
0 m! e- B/ x5 x( J: r9 b* tNonetheless, we do not believe our patient is
& x3 |8 N# @0 y2 _/ kgoing to experience any of the untoward effects from
. E) t# R4 d; u" {- L+ otestosterone exposure as mentioned earlier because& ^3 c' D) l( ]" O: L
the exposure was not for a prolonged period of time.
' X( J1 Q! X: _; X! A* bAlthough the bone age was advanced at the time of
9 [/ z. k' E; V: Q3 _diagnosis, the child had a normal growth velocity at6 Z# T4 A* j$ Y
the follow-up visit. It is hoped that his final adult
# l' ~! x/ Y& b. J1 _3 rheight will not be affected.
7 S: x' h2 f- M5 u" D$ t/ V! R0 l7 V4 QAlthough rarely reported, the widespread avail-
8 |$ v# l+ S, N0 yability of androgen products in our society may
/ }$ P* ^" v+ h) n8 G7 jindeed cause more virilization in male or female9 N7 ?) }/ I( y5 B( Y
children than one would realize. Exposure to andro-0 H% a* {: `. L
gen products must be considered and specific ques-
' |, E. l% _7 S' R' w8 E4 q7 J! ltioning about the use of a testosterone product or
1 [( G( o2 t/ v$ e8 d0 x1 Lgel should be asked of the family members during0 N5 n3 Z* m1 }! L. V u4 t
the evaluation of any children who present with vir-
?5 j( X+ Q9 z2 o# N* N3 i Xilization or peripheral precocious puberty. The diag-9 P' h7 T: m2 [4 A2 U
nosis can be established by just a few tests and by
7 j j, T3 t5 Q5 G' Z$ r& m# y8 q, e+ ]appropriate history. The inability to obtain such a
/ V# S5 _ V( s) T. b, B) chistory, or failure to ask the specific questions, may
# D: U* U q- j+ Y6 ]) ?5 I) nresult in extensive, unnecessary, and expensive
3 R; Z& [2 R$ z8 S3 N" W6 H& iinvestigation. The primary care physician should be# x0 ]5 K, S, n& i% \, w, T
aware of this fact, because most of these children' j( T ^6 u( W! T! l
may initially present in their practice. The Physicians’2 N# c1 r z$ ]: z; ~) r& N
Desk Reference and package insert should also put a
! l, r% @* h! o+ I8 Swarning about the virilizing effect on a male or' }! D0 i- E% K, y d, B, R
female child who might come in contact with some-
/ F# t/ o7 V \4 Fone using any of these products.
# l- t9 M3 f( y3 e ^* nReferences6 h; U( J& ]9 S& m
1. Styne DM. The testes: disorder of sexual differentiation" o6 v! p. b2 y0 I' s) M, z4 |
and puberty in the male. In: Sperling MA, ed. Pediatric. I& a1 p7 j/ b2 d
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
" P/ Z) W1 F/ X* @' {' |7 V% y" k2002: 565-628.
- o( M& c7 w* e2 V$ U3 o# X4 e7 g. U2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious2 `( ?) r* l9 s; g `) ?# [9 L+ G
puberty in children with tumours of the suprasellar pineal+ C/ U: _" f) G& X u
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from* c/ D( L2 i1 ?4 @; r n! F
Topical Testosterone Exposure / Bhowmick et al 543
( u4 M) |, _! H+ ?, M# d# d6 Mareas: organic central precocious puberty. Acta Paediatr.+ {. Q# @7 {& V: k, p0 m; j( E# }
2001;90:751-756.! P1 g: G( K) a2 z, Q* t! U& W
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.. h' M' J3 ~, a
Pediatric Endocrinology. 4th ed. New York, NY: Marcel- R1 R2 I" p# J, L ~% c& l- q1 O9 `
Dekker Inc; 2003:211-238.
6 D5 v& d; R1 n: X+ { Y5 i0 L6 {# n+ g4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual" y* x2 ]. i: G! Y! j4 r
development in a two-year-old boy induced by topical
2 f) z2 h$ ^& g& W8 Zexposure to testosterone. Pediatrics. 1999;104:e23., }- z" V/ M/ ]: o; T! v
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of3 h3 U' j4 x4 m, C5 N- s% G9 c1 |, E% N
Skeletal Development of the Hand and Wrist. 2nd ed.
" H: `% D) _+ r. D& K6 Y3 G- U6 pStanford, CA: Stanford University Press; 1959.4 a0 O5 u; W0 \2 h# B4 b
6. Physicians’ Desk Reference. Androgel 1% testosterone,
+ _; R6 W' q5 Y( `3 V, eUnimed Pharmaceutical Inc. Montvale, NJ: Medical
, }" m$ {- v/ s* u8 TEconomics Company, Inc; 2004:3239-3241.; W1 s, B, ^, X a5 s
7. Klugo RC, Cerny JC. Response of micropenis to topical7 q( V8 Y, H7 h# r
testosterone and gonadotropin. J Urol. 1978;119:
' E/ A# g6 O) @ m667-668.& K/ F5 p7 e0 y
8. Guthrie RD, Smith DW, Graham CB. Testosterone
2 h: D& b9 A5 M; G( E& Xtreatment for micropenis during early childhood. J Pediatr.
" H0 w) N- o# j- [1973;83:247-252.& o L2 e; ^; ~5 v/ }
9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone, ?: P, i: J1 _/ ]! J" \
therapy for penile growth. Urol. 1975;6:708-710.2 T3 `% K2 W- r4 e5 J3 q
10. Husmann DA, Cain MP. Microphallus: eventual phallic/ R! H0 q" h5 C; C2 e) u6 F2 `
size is dependent on the timing of androgen administra-; @ G" \. n. f! ?, m- D
tion. J Urol. 1994;152:734-739.
" L; Q/ t" | o( R/ T11. McMahon DR, Kramer SA, Husmann DA. Micropenis:. ^- w% @/ k; Q3 d" {7 n0 e
does early treatment with testosterone do more harm1 N8 c$ A# B& f% a
than good? J Urol. 1995;154:825-829.
2 q8 ?% i/ A6 R3 r12. Takane KK, George FW, Wilson JD. Androgen receptor
. O$ m, K# k# v; s; Y y/ w4 \8 gof rat penis is down-regulated by androgen. Am J Physiol.! B+ L" B$ A- q, n; _4 _
1990;258:E46-E50.3 j* x& Y: n4 r/ }( Y9 K# a
13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect( @8 Q4 ^" u: ?: D `5 a
of prepubertal androgen exposure on adult penile
$ h2 l# ~( }# p9 j% C, Z/ Zlength. J Urol. 1996;156:783-787. |
|