- 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. Central8 c6 L) G( J. |+ @
precocious puberty (CPP), which is mediated
, F: V5 ]' p7 `8 E0 b# Lthrough the hypothalamic pituitary gonadal axis, has5 ^% P' O8 L/ Z% ~3 l3 {6 |) T
a higher incidence of organic central nervous system
/ d, S! L. F5 S% h: x* z1 Ulesions in boys.1,2 Virilization in boys, as manifested
+ n& V1 @) F, a! S* M* u7 c* ^+ Pby enlargement of the penis, development of pubic
1 I0 L( |! R( x% Q+ f* {hair, and facial acne without enlargement of testi-& X0 s# }$ h: D4 ]* W6 Y
cles, suggests peripheral or pseudopuberty.1-3 We
2 a5 {' |# L% Q: l' A* P, Areport a 16-month-old boy who presented with the9 u5 n2 Y/ Z. W0 m+ p
enlargement of the phallus and pubic hair develop-
) k& [6 n! B; K# G4 Z" `ment without testicular enlargement, which was due, a9 O- x' Z/ u# |1 { Q
to the unintentional exposure to androgen gel used by
, i! |! c8 K9 Cthe father. The family initially concealed this infor-, g% r! J6 T' n7 s: S7 X9 O7 H2 @
mation, resulting in an extensive work-up for this6 }% j5 N' D0 D. Z
child. Given the widespread and easy availability of: [2 @* @, {6 m9 X( v
testosterone gel and cream, we believe this is proba-
) @% H# B6 K/ Vbly more common than the rare case report in the5 h4 L( r, A0 W" H7 h
literature.4
; G, e% z0 k% X3 I5 y, gPatient Report; A: P2 @2 n: ]' j' x
A 16-month-old white child was referred to the
9 N& l1 T3 n- [) F& V/ l- }/ Hendocrine clinic by his pediatrician with the concern- o# s7 ]0 @/ _
of early sexual development. His mother noticed( ?" i. n1 V8 y
light colored pubic hair development when he was4 G9 V, T, ~7 _! q" `
From the 1Division of Pediatric Endocrinology, 2University of
& A( p1 E/ [6 Y/ x* P! J4 @South Alabama Medical Center, Mobile, Alabama.8 }; L( ~6 o$ |' U
Address correspondence to: Samar K. Bhowmick, MD, FACE,
- e: e/ r/ P1 G0 u( `9 RProfessor of Pediatrics, University of South Alabama, College of# k L; [! y2 ]3 q5 u1 X/ z0 H
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297; o5 ~# z, G3 D0 \% a7 v
e-mail: [email protected].# x" V; D/ o! ^- b9 P3 ]
about 6 to 7 months old, which progressively became
* V$ `* @' r( J0 ]! x* Hdarker. She was also concerned about the enlarge-
2 z* F) O/ G. D4 k) s9 @- qment of his penis and frequent erections. The child' B$ f- v7 v; l
was the product of a full-term normal delivery, with
! T4 M# @! z9 i) ]a birth weight of 7 lb 14 oz, and birth length of- ?) h* p- d+ `. Z: i* ?# u! P/ B
20 inches. He was breast-fed throughout the first year9 P% R y% W8 O R7 T
of life and was still receiving breast milk along with) e. Z- s, c: t* B
solid food. He had no hospitalizations or surgery,4 z; T/ ^2 c; A# P4 E2 Y l
and his psychosocial and psychomotor development
5 c" m6 D! A; {was age appropriate.% k* p) ~- Z$ K9 ]8 [5 \
The family history was remarkable for the father,9 h1 D$ j5 }. W3 ^: Q6 S- ^
who was diagnosed with hypothyroidism at age 16,% A- p) Q8 y- `: b6 p
which was treated with thyroxine. The father’s5 B2 y) ^. ], F9 K8 J, u+ Z
height was 6 feet, and he went through a somewhat0 k- d7 C: @. A* l, M( M# s6 B
early puberty and had stopped growing by age 14.8 k4 e- a2 s8 W6 {+ m
The father denied taking any other medication. The
* P V2 s# {$ J3 {5 _( {* Bchild’s mother was in good health. Her menarche$ i) n6 r0 L; i1 B
was at 11 years of age, and her height was at 5 feet
- g7 X- c5 u, i2 W$ b" L; S3 a5 inches. There was no other family history of pre-
0 E! g7 e5 b; `. }* F8 r# ~cocious sexual development in the first-degree rela-
3 H" Z/ F' A# _7 ^9 `! J+ rtives. There were no siblings.) E0 E! U. M8 V$ m
Physical Examination
; f9 L( U( x& E. {The physical examination revealed a very active,* i- G+ O+ E' E- d& o2 Y& W2 H
playful, and healthy boy. The vital signs documented$ v, ]+ D! v/ P; M" k8 m
a blood pressure of 85/50 mm Hg, his length was
; C6 e/ K6 M: Z7 t1 R90 cm (>97th percentile), and his weight was 14.4 kg; |$ |" [* d) U- a+ ]/ ?. g7 l5 J
(also >97th percentile). The observed yearly growth
# C. s4 X1 R: }3 L- rvelocity was 30 cm (12 inches). The examination of2 c* T' |$ \6 T
the neck revealed no thyroid enlargement.6 T" l+ p9 J$ Z* v+ i1 e) H2 [
The genitourinary examination was remarkable for8 b" K: U7 m1 T; m
enlargement of the penis, with a stretched length of
$ Q3 K7 l1 l/ x$ G7 @8 cm and a width of 2 cm. The glans penis was very well* a) @4 u1 z8 h8 z1 i3 U2 ]' c+ e
developed. The pubic hair was Tanner II, mostly around
5 p3 I8 S Y$ Y d3 l7 S540& S7 S0 ]2 ?3 ]! i1 U$ e
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from w$ S! P3 [8 a$ v( u( M- N* D
the base of the phallus and was dark and curled. The$ W7 z4 O9 ?8 F
testicular volume was prepubertal at 2 mL each.
* _- G" `: N4 B d1 p: {* _& Q% ZThe skin was moist and smooth and somewhat
- e; N: d+ A! O5 P0 _0 r7 P# j" {6 Aoily. No axillary hair was noted. There were no2 U% D. I; j9 B
abnormal skin pigmentations or café-au-lait spots. N9 d: g, z0 ^9 N L9 ?# a
Neurologic evaluation showed deep tendon reflex 2+
& r" P7 _% s$ Q. qbilateral and symmetrical. There was no suggestion, N7 w7 C+ b' ]( D/ g
of papilledema.6 Y( @) [+ \8 G
Laboratory Evaluation5 L9 B5 c4 l# s2 B: Q
The bone age was consistent with 28 months by
K! }# M" l6 r4 W9 fusing the standard of Greulich and Pyle at a chrono-
, Z( j1 _9 T S) J/ @& N8 Y0 d# } Blogic age of 16 months (advanced).5 Chromosomal
2 x. x* q+ @, d* H: g4 q) u1 ekaryotype was 46XY. The thyroid function test
& j. Y8 }8 D A# c7 gshowed a free T4 of 1.69 ng/dL, and thyroid stimu-5 J! L# R" Y6 ^" y) R, w5 P
lating hormone level was 1.3 µIU/mL (both normal).* ` t8 i$ m7 H6 s: P
The concentrations of serum electrolytes, blood1 `' Q7 X/ S/ @+ V) w, b
urea nitrogen, creatinine, and calcium all were
/ `7 i+ ]- D9 |* B! k4 Nwithin normal range for his age. The concentration$ Q* h" C; h3 v& t7 j) J: I
of serum 17-hydroxyprogesterone was 16 ng/dL* v1 e0 l9 y# ]8 P" r( t/ q4 ^2 w
(normal, 3 to 90 ng/dL), androstenedione was 20. F/ |2 e$ s* L' U/ D- O
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
: S; x0 a$ f$ l2 B& X1 Gterone was 38 ng/dL (normal, 50 to 760 ng/dL),
8 O8 L" v" q" K' d& adesoxycorticosterone was 4.3 ng/dL (normal, 7 to
( W8 m: L$ E; t* N49ng/dL), 11-desoxycortisol (specific compound S)
' x: Y, d0 ]4 S( l5 N% Fwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-9 i# X( W1 |& W! V) ~1 w( g
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
9 O6 z+ Q- A3 _/ M" E. s Ftestosterone was 60 ng/dL (normal <3 to 10 ng/dL),) v9 ]: B' _" g/ n
and β-human chorionic gonadotropin was less than8 y& r) c" w; Y: J4 @ d
5 mIU/mL (normal <5 mIU/mL). Serum follicular
& [& X( x8 z. K3 f4 R9 H fstimulating hormone and leuteinizing hormone
! _8 A t# z9 j) E8 r* lconcentrations were less than 0.05 mIU/mL
7 _# h8 |+ k2 x+ M& r9 j(prepubertal).& n, _0 c l; L m" j9 j( P* C$ g5 T2 R
The parents were notified about the laboratory
4 |0 z ]+ k) t; wresults and were informed that all of the tests were3 a3 s2 L# ?9 V! H) q
normal except the testosterone level was high. The! \9 g2 n( P: c2 u& G1 O: S
follow-up visit was arranged within a few weeks to
/ t$ `& c. W' Yobtain testicular and abdominal sonograms; how-5 _- k* T9 t; x. J: Y7 @! o
ever, the family did not return for 4 months.
8 n- b" N5 V1 D2 NPhysical examination at this time revealed that the
' I* [0 R1 \+ E7 c3 m- \, Xchild had grown 2.5 cm in 4 months and had gained
5 h# i! A8 _. Y2 kg of weight. Physical examination remained
# u- R; D; h1 E& _5 a- I; sunchanged. Surprisingly, the pubic hair almost com-
1 E& z3 m) J2 W2 g y, kpletely disappeared except for a few vellous hairs at" ~! R- T2 z4 j! Z
the base of the phallus. Testicular volume was still 2
! | p3 Y" d4 TmL, and the size of the penis remained unchanged.9 {8 [4 I g% S% }4 r- @7 m9 {$ T& g
The mother also said that the boy was no longer hav-
. Z+ V5 v/ O% r# o( W! ring frequent erections.
. u8 C7 W- k/ x7 p4 r/ |0 I) qBoth parents were again questioned about use of$ O) u. r z4 D* n
any ointment/creams that they may have applied to) `" G& f2 V% }3 M5 s
the child’s skin. This time the father admitted the
4 Y/ p% f. M0 O1 b+ iTopical Testosterone Exposure / Bhowmick et al 541
: p9 r5 _2 ^9 Y1 e/ [use of testosterone gel twice daily that he was apply-3 ?. G3 p8 }9 Y( e. C
ing over his own shoulders, chest, and back area for4 M, n# @( j+ A$ Z' ?6 D1 p
a year. The father also revealed he was embarrassed
: c. w, }8 b( X. r% _: ^to disclose that he was using a testosterone gel pre-
$ O% B" ^$ ~$ w- {6 Xscribed by his family physician for decreased libido
7 e$ B& Y) |3 [# ^2 _8 \secondary to depression.
4 g! Z: x% @1 e) xThe child slept in the same bed with parents.
2 y+ L% G" S: U* s1 p( f+ iThe father would hug the baby and hold him on his
& ]% U- @( {: b1 h8 I, m# U ?9 Q2 f+ cchest for a considerable period of time, causing sig-, p& v$ H& W! ~4 ~( p& ]! \
nificant bare skin contact between baby and father.2 S+ {2 s# ^$ z+ s0 M4 `7 h) S: v: Q
The father also admitted that after the phone call, i3 s, w; C N* D& x( v; I1 Y% J
when he learned the testosterone level in the baby
5 k' O$ X- g) [! lwas high, he then read the product information& J2 S; R8 R, M2 ?2 [* y: K
packet and concluded that it was most likely the rea-7 k, e) ~6 F( r5 X6 Q6 a: ?9 t
son for the child’s virilization. At that time, they
2 ?$ H5 K G4 o* k5 T8 [decided to put the baby in a separate bed, and the! p% N5 ?6 x- \$ C% {5 h& h6 s
father was not hugging him with bare skin and had& O3 W0 v" R% t& Q- T( T2 s& _ A
been using protective clothing. A repeat testosterone U6 d1 M8 H3 O( I/ c
test was ordered, but the family did not go to the
; Q1 {/ p& W" P4 {4 V/ A7 Llaboratory to obtain the test.5 @5 a1 [" L8 j2 e! D' I$ w) g
Discussion
2 Z* }. P0 X7 E$ J* ]% R5 C( jPrecocious puberty in boys is defined as secondary
. v8 G; T2 N# V* c4 d6 csexual development before 9 years of age.1,4! K% D( O5 b" ?0 {3 Y9 I2 N$ X
Precocious puberty is termed as central (true) when
3 \! ]- T( ?' i6 l, `! Ait is caused by the premature activation of hypo-( ~; Z* j0 B; t7 G
thalamic pituitary gonadal axis. CPP is more com-
3 W% ` N) [. Z! V ?mon in girls than in boys.1,3 Most boys with CPP! M+ F+ U4 [ V5 B- [% W' Y1 j
may have a central nervous system lesion that is
8 {$ ]6 J( c4 dresponsible for the early activation of the hypothal-" `/ |: W w) z* V4 L% O) q' V
amic pituitary gonadal axis.1-3 Thus, greater empha-
0 d! G- z; I4 ^9 D3 E' c+ _9 {sis has been given to neuroradiologic imaging in: K( \' G* ?4 F2 o8 M, ^# Q
boys with precocious puberty. In addition to viril- V0 L3 w4 F4 X- @7 Q% T
ization, the clinical hallmark of CPP is the symmet-
- r$ ^6 o# c v; N6 E! Frical testicular growth secondary to stimulation by
+ u: Q1 L" |. D2 X' [gonadotropins.1,3
, ]# n! J) E2 N7 p; s3 TGonadotropin-independent peripheral preco-# s( D% e' ?# p8 l
cious puberty in boys also results from inappropriate
# s$ }7 W! U8 ?" _androgenic stimulation from either endogenous or/ d4 Y# D) X, c, T
exogenous sources, nonpituitary gonadotropin stim-: F9 h) z5 y1 h& A- d4 i% e+ D8 ^
ulation, and rare activating mutations.3 Virilizing- T9 W7 Y# d) @/ O6 [. g& P) I( N
congenital adrenal hyperplasia producing excessive- q. r2 z& x0 @& V9 L2 ^& _
adrenal androgens is a common cause of precocious
; B9 |" m7 l4 A' O3 ~* |6 O6 gpuberty in boys.3,41 R K* k5 T2 j4 u6 E' ^6 a8 q
The most common form of congenital adrenal; V, e+ x' H5 S+ q6 e9 L
hyperplasia is the 21-hydroxylase enzyme deficiency.
. d/ H* _9 F& n. A& @! DThe 11-β hydroxylase deficiency may also result in
/ y4 p6 _/ n! {, @# h8 H# {excessive adrenal androgen production, and rarely,: C9 r' i" w9 U: g- q8 B5 x
an adrenal tumor may also cause adrenal androgen
9 i D+ I/ Q5 O9 U$ oexcess.1,35 P# @* a! ~4 h; s
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
5 X2 N; I. x0 @: ]9 H542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
9 x7 N6 ?' K) BA unique entity of male-limited gonadotropin-
+ e7 U; ?! z2 M9 i' gindependent precocious puberty, which is also known9 B, B$ u+ i0 U8 x h: m8 H0 r
as testotoxicosis, may cause precocious puberty at a$ L- a! \) j8 Y! T7 t; e
very young age. The physical findings in these boys) M" h+ z3 n0 F& y: [
with this disorder are full pubertal development,( P( K' ]6 m' V/ W
including bilateral testicular growth, similar to boys1 |" u$ X& `9 L2 j
with CPP. The gonadotropin levels in this disorder0 {. O* ^. S% p
are suppressed to prepubertal levels and do not show
% P. T/ p" O! I5 ]9 cpubertal response of gonadotropin after gonadotropin-
- Z2 {; \! s, F" nreleasing hormone stimulation. This is a sex-linked
3 ~* D) M4 \1 K. [: M: fautosomal dominant disorder that affects only
& y" ]% s$ Z9 O* M$ Kmales; therefore, other male members of the family# ?/ e0 }! {/ ]
may have similar precocious puberty.3
# t3 [) a& j Z$ E5 x1 RIn our patient, physical examination was incon-, z) h4 a- X) o
sistent with true precocious puberty since his testi-
+ c) z2 ~( g1 W; ]/ K# M; R d1 Rcles were prepubertal in size. However, testotoxicosis- E4 K+ `6 T8 |4 G8 ~
was in the differential diagnosis because his father
0 ?$ ]+ U6 Y1 bstarted puberty somewhat early, and occasionally,1 p( S4 t" a7 c/ V! v( j+ ~: D ?
testicular enlargement is not that evident in the$ ^& g$ [5 v: I, u
beginning of this process.1 In the absence of a neg-3 T' k& l3 J2 X9 [5 o
ative initial history of androgen exposure, our! ]# E& I/ Q5 K. Z% D
biggest concern was virilizing adrenal hyperplasia,6 r. C* c5 s, j
either 21-hydroxylase deficiency or 11-β hydroxylase" r2 U5 n0 T3 s! z4 ~$ n
deficiency. Those diagnoses were excluded by find-: F2 }$ o9 o% f' b; B3 O5 ]' m+ L
ing the normal level of adrenal steroids.( f/ _1 Q6 P% u! }: j& N% ~
The diagnosis of exogenous androgens was strongly
# x; k$ L0 c- P8 [) Psuspected in a follow-up visit after 4 months because' X( f: z5 C" Q# K
the physical examination revealed the complete disap-. c9 @, R1 |; W: W
pearance of pubic hair, normal growth velocity, and
& Y; F' u% @1 ^5 b4 B2 Vdecreased erections. The father admitted using a testos-
' W- e4 M6 T. z9 V$ `terone gel, which he concealed at first visit. He was3 a$ B- [+ r& d. L1 ?, V; D a
using it rather frequently, twice a day. The Physicians’
) o z' }! ?* q/ P4 o5 Y" i S# [7 n( zDesk Reference, or package insert of this product, gel or
* @( ?0 h3 x1 E9 Vcream, cautions about dermal testosterone transfer to1 t( F5 D& j6 F+ R6 m$ H
unprotected females through direct skin exposure.- X/ o3 P- D# C; o
Serum testosterone level was found to be 2 times the
+ [. X7 j; b4 ` T2 I. p3 H$ vbaseline value in those females who were exposed to. I, j# ^! @( e$ `% U
even 15 minutes of direct skin contact with their male3 I# q" Q6 y5 U" W4 q |4 {
partners.6 However, when a shirt covered the applica-
4 r& {9 a7 d$ `tion site, this testosterone transfer was prevented.. V- J. ~( D, o
Our patient’s testosterone level was 60 ng/mL,
& d H1 {5 B+ H- w# Awhich was clearly high. Some studies suggest that" }9 K+ [) ^) w8 S* R
dermal conversion of testosterone to dihydrotestos-5 D) D1 {( f7 g
terone, which is a more potent metabolite, is more
) ~7 B2 G! ?+ Z* H1 J* S$ f- v( Cactive in young children exposed to testosterone
' R+ a$ G& j& J& R1 ~# m3 ~7 `exogenously7; however, we did not measure a dihy-" X/ i$ L x c* y) ^; w
drotestosterone level in our patient. In addition to
9 g3 I1 ]- Q4 I$ @virilization, exposure to exogenous testosterone in
1 P6 y; M+ \% q, ]children results in an increase in growth velocity and! U7 N6 N8 l' V3 @
advanced bone age, as seen in our patient.# q4 M, G' h8 S. U
The long-term effect of androgen exposure during/ F1 d9 c- J ?8 c9 Z0 u( ~- y5 e
early childhood on pubertal development and final+ N3 g1 D8 \# r1 A$ A4 Z( @- G
adult height are not fully known and always remain
1 t: O( G5 e. S/ @) P# @a concern. Children treated with short-term testos-
' j$ b+ |% C3 v; K" s( _2 tterone injection or topical androgen may exhibit some# q b! _ c3 \' C( Q
acceleration of the skeletal maturation; however, after
6 ^$ G( P+ n0 ycessation of treatment, the rate of bone maturation
5 U* n0 |2 i9 F; C+ c, t% ~8 hdecelerates and gradually returns to normal.8,9/ L. a8 Y! A' N5 D4 m8 t
There are conflicting reports and controversy
9 p2 u% K$ K' C# i, N" kover the effect of early androgen exposure on adult
3 l& `; u, `% K" o. v3 a1 L7 d+ gpenile length.10,11 Some reports suggest subnormal
& C, e: r! @$ I7 O" ~' \% fadult penile length, apparently because of downreg-/ p+ z2 S& I8 p& W1 @* i
ulation of androgen receptor number.10,12 However,
9 f& G J" t8 h) i7 t' RSutherland et al13 did not find a correlation between+ l0 ?+ I0 v4 E. J- Y+ q: K$ C
childhood testosterone exposure and reduced adult7 h* [' Q- \! r& V4 Z! l
penile length in clinical studies.
: x: a- X+ Z% y$ B; e0 BNonetheless, we do not believe our patient is4 a/ O2 W- D+ _# t# x
going to experience any of the untoward effects from
# r0 b8 V4 h, Otestosterone exposure as mentioned earlier because
1 z w; Z4 E& {5 m( n8 Z# a1 [the exposure was not for a prolonged period of time.5 ^$ v0 \+ T% g! l% z; i) N
Although the bone age was advanced at the time of
1 i1 I4 |8 V" }$ U( r2 z3 }diagnosis, the child had a normal growth velocity at5 p( ]7 F: k2 K4 y
the follow-up visit. It is hoped that his final adult1 D4 C! G9 k* Y i! C- w' \9 W) S
height will not be affected.. G' O8 l$ x% t* U$ \" _1 \
Although rarely reported, the widespread avail-
1 o9 [" X+ @- r# ^ability of androgen products in our society may
9 Y* r3 {* \) [' C6 y5 xindeed cause more virilization in male or female
. d7 Z8 N# V* f4 H9 q Vchildren than one would realize. Exposure to andro-. U, v! U/ C# T5 O8 Q
gen products must be considered and specific ques- O* B, C( }9 Z% K
tioning about the use of a testosterone product or
' j) i) H4 e# K9 P, G6 r+ R1 Jgel should be asked of the family members during, O; T# q$ ~/ Z; ?9 f: l7 A
the evaluation of any children who present with vir-; x( x3 f' g/ ~, }8 L
ilization or peripheral precocious puberty. The diag-
7 }# I2 Q3 n9 D, I) [6 hnosis can be established by just a few tests and by
b8 O1 K* L9 m2 I0 W7 k9 mappropriate history. The inability to obtain such a
, [: P; Q8 H$ |9 `6 E1 }history, or failure to ask the specific questions, may/ a8 d$ w0 g) j: P% E. w4 x6 ?8 s
result in extensive, unnecessary, and expensive6 W8 j' Y A2 e$ y* Y
investigation. The primary care physician should be8 l& E1 b& R8 D% k
aware of this fact, because most of these children
9 P: w' T1 A0 h' D& @% c; amay initially present in their practice. The Physicians’) Z$ d3 r) a$ B W# T
Desk Reference and package insert should also put a( {1 d( P& ~: O$ @
warning about the virilizing effect on a male or+ m+ W) }" U- v- A+ ~ R
female child who might come in contact with some-
( J5 g# z3 @% N/ C, n4 ^one using any of these products.
$ O! f' K2 h- z; q, l% yReferences
" ?2 { C. l$ z% Z1 h; Q- Y1. Styne DM. The testes: disorder of sexual differentiation' n7 G; R/ b( ^3 l3 s
and puberty in the male. In: Sperling MA, ed. Pediatric
/ j: `' L3 D. MEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;/ ^& ?7 m# d% \
2002: 565-628.1 n: ?. o: \) P g/ N
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious& U. I1 c# t r6 n
puberty in children with tumours of the suprasellar pineal9 J4 s- n0 j" C( M9 ]
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
& r1 e6 a$ s- P6 p( n: iTopical Testosterone Exposure / Bhowmick et al 543
T1 ~6 r# }' l. k! Jareas: organic central precocious puberty. Acta Paediatr.& N2 n) G9 g8 I; y3 _
2001;90:751-756.+ H. n% Z& g: z, Z; t: a
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.( z. } H: ?5 \" F
Pediatric Endocrinology. 4th ed. New York, NY: Marcel
3 V( X" T" W) F5 JDekker Inc; 2003:211-238.
* Q$ `6 G/ v! `4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual& i, }/ T2 I( g! D9 M7 s+ Y" \# E
development in a two-year-old boy induced by topical# G1 Q" x2 n( C
exposure to testosterone. Pediatrics. 1999;104:e23.
6 t9 K. U2 Q+ R! }" r, J9 E1 k5 N5. Greulich WW, Pyle SI, eds. Radiographic Atlas of' Q' H7 u' M& X3 j5 c+ h. N
Skeletal Development of the Hand and Wrist. 2nd ed.$ v7 u! o3 {8 q; z
Stanford, CA: Stanford University Press; 1959.2 T- B% Z- S" c, h
6. Physicians’ Desk Reference. Androgel 1% testosterone,
' {% I0 i) T6 TUnimed Pharmaceutical Inc. Montvale, NJ: Medical
& x4 H/ B0 h+ h2 p( N4 @( mEconomics Company, Inc; 2004:3239-3241.4 l' K9 k4 z( b; r
7. Klugo RC, Cerny JC. Response of micropenis to topical6 P) S$ g( [' O) J; w% s
testosterone and gonadotropin. J Urol. 1978;119:' i* j, ~8 }9 T7 K9 ?
667-668.3 H; L; h" c' C7 T+ R
8. Guthrie RD, Smith DW, Graham CB. Testosterone
* U3 n* v7 a0 A% t0 |treatment for micropenis during early childhood. J Pediatr.
' J8 H- L4 h% y7 ^4 Q1973;83:247-252.
J6 M2 K7 z3 W2 h9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone
! s4 Z% x. E1 p g: i: ytherapy for penile growth. Urol. 1975;6:708-710.
" v3 J; ~( g0 t" B10. Husmann DA, Cain MP. Microphallus: eventual phallic
6 U: G0 l( W$ e' _6 _2 v. ysize is dependent on the timing of androgen administra-
8 A% ?& @7 @$ L1 R, _; @tion. J Urol. 1994;152:734-739.- X3 E L7 t6 @
11. McMahon DR, Kramer SA, Husmann DA. Micropenis:
. N% w1 D3 I; J. u6 Y$ X; f% }does early treatment with testosterone do more harm
+ m& e; Y5 j2 [, ^& N7 Fthan good? J Urol. 1995;154:825-829.
- [* ^ V) \6 N4 I12. Takane KK, George FW, Wilson JD. Androgen receptor
6 a0 I2 Y5 Z9 Cof rat penis is down-regulated by androgen. Am J Physiol.
3 i% I/ s3 Q w) }1990;258:E46-E50.2 S1 `# W8 ]2 e/ x
13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect$ }; x5 v7 p D6 _# Z
of prepubertal androgen exposure on adult penile
8 {( D! u b9 s$ C& ^7 e5 b) ylength. J Urol. 1996;156:783-787. |
|