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is a significant concern for physicians. Central
; ^% F D" B) P+ }* Eprecocious puberty (CPP), which is mediated
9 \2 ]: V+ Z( ythrough the hypothalamic pituitary gonadal axis, has1 W' [4 b E7 t4 v: U. t5 t
a higher incidence of organic central nervous system
9 K1 @( k- [: n1 i1 l0 glesions in boys.1,2 Virilization in boys, as manifested
* k; R, U# {( D) v% a' M1 Gby enlargement of the penis, development of pubic/ Y5 ^, i# L/ t( H: B1 W
hair, and facial acne without enlargement of testi-
. k5 c3 z5 ]; w. V _. _3 H6 ycles, suggests peripheral or pseudopuberty.1-3 We2 x* h! L1 t t9 j7 O* P0 q
report a 16-month-old boy who presented with the
& n8 |; b4 {0 z7 Q4 [( M. |enlargement of the phallus and pubic hair develop-
* m8 I1 G- Z4 i& Pment without testicular enlargement, which was due
/ h5 f: W2 |( f3 ?to the unintentional exposure to androgen gel used by
}+ J) T$ P, c. w3 }7 G6 z1 C$ rthe father. The family initially concealed this infor-, k0 t9 R8 R( }5 w' a, c
mation, resulting in an extensive work-up for this
; x4 o* ^5 w( {7 d0 achild. Given the widespread and easy availability of, y" N) d+ w: _: D0 Q R4 k! i& E( y
testosterone gel and cream, we believe this is proba-0 Z+ A2 V! i K
bly more common than the rare case report in the
. D4 b. g. d, j+ Xliterature.4/ |' u/ ]; Y1 I# G
Patient Report
3 N& {+ N. T) ~2 w8 g3 M( m4 ` rA 16-month-old white child was referred to the8 |9 [. q7 ~: s. R) i& m( j8 Y; X
endocrine clinic by his pediatrician with the concern2 j! l. Q8 a$ C/ m" D( T& n( Y
of early sexual development. His mother noticed
, e# u# \9 L: J9 G! ^light colored pubic hair development when he was
- B( p6 }9 p2 f D7 v: EFrom the 1Division of Pediatric Endocrinology, 2University of! Y5 u/ j7 ?& N8 ^: ~+ y# P
South Alabama Medical Center, Mobile, Alabama.
, a$ s& ?$ [& e2 Q3 yAddress correspondence to: Samar K. Bhowmick, MD, FACE,7 ]6 `7 y0 C$ ]
Professor of Pediatrics, University of South Alabama, College of9 n* Z2 Z; Z2 ?
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;/ y2 l: O, E$ T# o m% C# j; o
e-mail: [email protected].
. ]' W8 I' c1 W/ H' Sabout 6 to 7 months old, which progressively became/ `& `# H k$ ~0 w( G9 g+ ?, R
darker. She was also concerned about the enlarge-- y4 g! B9 x' Q. ^' K, k
ment of his penis and frequent erections. The child
1 h* `' v: i8 y8 Vwas the product of a full-term normal delivery, with! o7 m- [1 K! R
a birth weight of 7 lb 14 oz, and birth length of h8 ~ _- n! l. s3 ~
20 inches. He was breast-fed throughout the first year/ A$ }3 _7 U1 r5 f) s
of life and was still receiving breast milk along with
9 J4 X, l) t2 I4 u6 b' ?: A! O9 csolid food. He had no hospitalizations or surgery,+ S! J. N6 U# h: G1 h4 g+ R
and his psychosocial and psychomotor development5 w1 ?# u5 l* b% Q! \) a
was age appropriate.
6 Y0 L$ y& @0 F8 ?8 `The family history was remarkable for the father,/ V9 }( w+ |+ y0 G$ S
who was diagnosed with hypothyroidism at age 16,
# l$ M$ Y1 f4 p/ r" H/ s% Ewhich was treated with thyroxine. The father’s
; k# \, x' K6 p! m2 Qheight was 6 feet, and he went through a somewhat
; X' Z x, C: h$ Dearly puberty and had stopped growing by age 14.
% `0 ]* y2 m8 c4 V3 NThe father denied taking any other medication. The
* q5 G# E9 z: e' }. Wchild’s mother was in good health. Her menarche
2 s7 G/ j5 _- _/ n( v* Uwas at 11 years of age, and her height was at 5 feet8 e$ U+ D' s' q( I: i5 p
5 inches. There was no other family history of pre-2 L' Q" t" T( k5 a$ u& s8 K- r+ O3 ~
cocious sexual development in the first-degree rela-
/ v) V. m" {1 U* Ptives. There were no siblings.% A( w9 F, L+ k% n; U7 p) E( x
Physical Examination: a) x* B7 E' s! f, H9 y
The physical examination revealed a very active,
# }! K9 E+ I9 \& R0 h: t$ k" [7 t: Tplayful, and healthy boy. The vital signs documented' n2 R! r' X0 q( U6 L" _
a blood pressure of 85/50 mm Hg, his length was
9 z( c9 t- |+ U& Z* \# y90 cm (>97th percentile), and his weight was 14.4 kg
$ b3 x1 f7 r) {4 x9 E2 H1 n(also >97th percentile). The observed yearly growth
, {+ g9 n9 g. svelocity was 30 cm (12 inches). The examination of
6 \9 ?& V8 W( d; S3 G( p" S8 m" uthe neck revealed no thyroid enlargement.2 F3 J& S1 w# N3 C6 O) v
The genitourinary examination was remarkable for' D* S5 j4 j9 e. `/ r. C! `
enlargement of the penis, with a stretched length of
% |# W/ G; e( H N8 cm and a width of 2 cm. The glans penis was very well
6 W( N% K4 o6 c& S# wdeveloped. The pubic hair was Tanner II, mostly around( v! |# L* ?6 t; T0 N# P- [7 U
540
: S! d0 [9 P! Kat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from) f8 {" T# K9 J: ^
the base of the phallus and was dark and curled. The8 @ ~4 s) G. ]: }5 ~# n$ v
testicular volume was prepubertal at 2 mL each.
" J2 W0 R2 P V8 hThe skin was moist and smooth and somewhat5 N9 L" H+ { j
oily. No axillary hair was noted. There were no" \8 _9 Z+ }' r5 X) _
abnormal skin pigmentations or café-au-lait spots.1 z* b( v, s- d; j e5 d2 c2 \
Neurologic evaluation showed deep tendon reflex 2+
e9 Q2 x$ Z+ W, n0 \3 Xbilateral and symmetrical. There was no suggestion0 D& D* B" z9 d) T
of papilledema.1 E6 \ D' ^3 V1 E6 P# W
Laboratory Evaluation4 |/ }! m7 [6 A2 y' h, J
The bone age was consistent with 28 months by T/ I3 f+ A! E7 q, {4 G
using the standard of Greulich and Pyle at a chrono-
( |, j g2 G+ I/ d3 J4 ]* \logic age of 16 months (advanced).5 Chromosomal
8 m/ {7 d9 W. s0 U3 x+ T+ ~, Ukaryotype was 46XY. The thyroid function test
" D( m4 v- r; E$ n! F9 I$ L0 O8 [showed a free T4 of 1.69 ng/dL, and thyroid stimu-% } g& W/ D! B, I6 o( s0 E
lating hormone level was 1.3 µIU/mL (both normal).
m1 F) b4 a9 `. x4 f G0 l3 u: BThe concentrations of serum electrolytes, blood
/ v! x8 l1 I, f2 g, lurea nitrogen, creatinine, and calcium all were9 e* D/ f* F3 I1 \5 h6 B: C
within normal range for his age. The concentration
: C: x' c& I7 K% r2 r2 ^8 ?of serum 17-hydroxyprogesterone was 16 ng/dL
8 _ V* y% [; i1 z# I" y8 n(normal, 3 to 90 ng/dL), androstenedione was 20, |. Z. _* h+ y
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-7 n" D2 I' I9 u2 @0 I
terone was 38 ng/dL (normal, 50 to 760 ng/dL),0 G9 j, A& F/ M5 G8 \+ |- Y
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
9 a; o: ^0 u! V! t$ K6 B49ng/dL), 11-desoxycortisol (specific compound S)
# i# |: M2 H* q! ~" {/ P1 Q: kwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
0 i% a& U, V% }7 Otisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
" a' |* J! p" B6 Y0 O8 Otestosterone was 60 ng/dL (normal <3 to 10 ng/dL),
+ {( \5 O# Y8 A! Xand β-human chorionic gonadotropin was less than; A( a+ f6 w, f' Z
5 mIU/mL (normal <5 mIU/mL). Serum follicular
, C9 Q9 v) A* \: K# T8 H b2 ~stimulating hormone and leuteinizing hormone3 [" q1 v5 x# Q8 x$ o- y
concentrations were less than 0.05 mIU/mL
$ H% @' M a7 n4 h1 a6 a' I(prepubertal).: h `" z2 O9 Y" I% c' m: T
The parents were notified about the laboratory
( ^5 i5 |5 O6 w, S$ P6 kresults and were informed that all of the tests were
' y' Y6 F( N/ O, onormal except the testosterone level was high. The
: c: {4 t; Z, W$ l1 Z4 Ofollow-up visit was arranged within a few weeks to
N. e# c* E0 \ ^& y! t$ Lobtain testicular and abdominal sonograms; how-
- W; R1 C C' h5 ^ever, the family did not return for 4 months.1 L9 P+ }) R+ g, ?
Physical examination at this time revealed that the
9 s1 H$ L8 v1 o/ i+ Lchild had grown 2.5 cm in 4 months and had gained
5 @: W0 Q4 C* @' z0 H2 kg of weight. Physical examination remained& S! |; Z0 u: X5 j7 x1 l9 G: g
unchanged. Surprisingly, the pubic hair almost com-
0 n v& _" G' o8 n2 I0 Apletely disappeared except for a few vellous hairs at8 B8 ~- D& A9 w9 ^* h) a) R
the base of the phallus. Testicular volume was still 22 O! C K+ h! t
mL, and the size of the penis remained unchanged.- }$ _$ D0 h1 D% W, ]
The mother also said that the boy was no longer hav-
4 v# k) T4 o( @/ m1 }9 X8 ding frequent erections.
5 Y: C( C" s8 H" a& Q8 t+ CBoth parents were again questioned about use of
# C& S' B# S* x. T1 y0 yany ointment/creams that they may have applied to
8 p7 d7 l: ^" Q2 R' C2 Uthe child’s skin. This time the father admitted the
5 y" ]1 y3 j1 E4 v. b# b- ZTopical Testosterone Exposure / Bhowmick et al 541
) r6 b9 a0 g$ N% |! p8 fuse of testosterone gel twice daily that he was apply-9 E- o9 w* V. Z( F) J
ing over his own shoulders, chest, and back area for
9 i% }5 ^( l! N4 J [a year. The father also revealed he was embarrassed
4 r+ C+ T$ i4 d- U$ vto disclose that he was using a testosterone gel pre-8 e; D/ S) @& S# g
scribed by his family physician for decreased libido5 S, y* I7 @# i4 p& X- g
secondary to depression.
1 I' K9 [: h3 B4 u. @! x% |The child slept in the same bed with parents.
- u7 e) v$ Q3 u5 ^0 i& J- ^0 p" TThe father would hug the baby and hold him on his
% C0 o& g- }/ F m A8 ?6 R1 \& cchest for a considerable period of time, causing sig-
2 `$ H( ]; c, w3 ]3 c8 Q; q2 Rnificant bare skin contact between baby and father.
6 H2 w6 N8 p. i) ~3 F+ SThe father also admitted that after the phone call,
8 T2 f, [; R) V* zwhen he learned the testosterone level in the baby: l, [9 z9 g. E1 n
was high, he then read the product information
5 y' o R( ]5 W. X) Lpacket and concluded that it was most likely the rea-' i6 x: x) L) E4 X5 ]
son for the child’s virilization. At that time, they" Y! z2 \- C j9 D' |6 g @ n& Z
decided to put the baby in a separate bed, and the+ s- _9 v6 i) c$ O( S
father was not hugging him with bare skin and had
5 R, \9 O- u/ _: o' g' h/ n1 Hbeen using protective clothing. A repeat testosterone
# j0 b) X% N4 p* y7 k- ?! { [8 N4 |test was ordered, but the family did not go to the
& @' n' Z7 R8 n; Z3 J* K1 Jlaboratory to obtain the test.
3 F8 a* P5 J6 O! s7 RDiscussion
, `( s4 e% Z7 s+ ^2 q3 t. E) m5 bPrecocious puberty in boys is defined as secondary8 E- M' K: m% J% g
sexual development before 9 years of age.1,4& [! J$ P7 g! ~* H( Y( Q2 O% l
Precocious puberty is termed as central (true) when
) w) \$ t4 T, n/ Jit is caused by the premature activation of hypo-: O$ g; V2 V4 q+ X
thalamic pituitary gonadal axis. CPP is more com-. u/ L5 M9 a6 n. C3 z
mon in girls than in boys.1,3 Most boys with CPP( b' w$ ^% {7 S7 z
may have a central nervous system lesion that is
0 e1 h$ c# c9 A: ?4 f0 U+ r5 xresponsible for the early activation of the hypothal-
( M! Q P- }7 R$ v) r+ ~6 ]' I7 q \amic pituitary gonadal axis.1-3 Thus, greater empha-
, D6 F+ H/ \' [& [! ksis has been given to neuroradiologic imaging in, D9 S. r* p. ]
boys with precocious puberty. In addition to viril-- o2 |! Q; S6 y! X, R& a; Q' t
ization, the clinical hallmark of CPP is the symmet-
" P3 p/ [3 |# V5 A; ?: q3 yrical testicular growth secondary to stimulation by
& i; a9 A5 {' {: d0 N' \: ugonadotropins.1,3
. x3 j o. g1 _; m0 fGonadotropin-independent peripheral preco-6 @0 c& K2 @& K8 T0 W4 X" m
cious puberty in boys also results from inappropriate2 M O; N w/ T% B" y) y
androgenic stimulation from either endogenous or
) ]4 g! U8 U" a/ w0 t+ G4 S0 texogenous sources, nonpituitary gonadotropin stim-
. ~/ I8 s) W- h5 ]" {/ y$ vulation, and rare activating mutations.3 Virilizing
: I5 P8 |+ G8 U1 _$ M. Bcongenital adrenal hyperplasia producing excessive$ P8 b8 k7 G0 a3 F
adrenal androgens is a common cause of precocious4 h( M1 j# S1 d2 `/ \$ s/ ~$ x$ L. [+ W
puberty in boys.3,46 Y1 D6 ~, y0 m# H8 e2 L9 a; O
The most common form of congenital adrenal! L, G9 t, O: x- \4 ~/ a5 |
hyperplasia is the 21-hydroxylase enzyme deficiency.
. B9 e L5 M8 _$ EThe 11-β hydroxylase deficiency may also result in9 x1 Z$ V( w6 q! \/ p
excessive adrenal androgen production, and rarely,) ?4 X- m9 f6 }3 k
an adrenal tumor may also cause adrenal androgen, O/ s! d# `1 O+ j
excess.1,3" ` u @. I" ^0 r7 \) Z
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
) n( ~, P- F7 b# C542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
. X+ r% l8 M8 p- v; o& ]5 @" XA unique entity of male-limited gonadotropin-. O4 x" G2 ]! D% ?' o7 [
independent precocious puberty, which is also known
& M% ]# @' s2 {7 \& d% L! w, b0 z2 Mas testotoxicosis, may cause precocious puberty at a
7 A" h( P1 m" E% ]6 w( [very young age. The physical findings in these boys$ [/ F6 X( H' {7 ~( d( @
with this disorder are full pubertal development,1 @, `+ k6 U; L4 a: \' u
including bilateral testicular growth, similar to boys: x. e# ^1 @$ C, r
with CPP. The gonadotropin levels in this disorder# B7 s; [/ |4 [5 O" D
are suppressed to prepubertal levels and do not show
6 Z# ~! r; B; w( x: vpubertal response of gonadotropin after gonadotropin-
: B9 j" n! O) W( G0 A6 xreleasing hormone stimulation. This is a sex-linked( m& G4 o! ~. U
autosomal dominant disorder that affects only
5 |6 C- d b! x# j1 H2 Jmales; therefore, other male members of the family& \8 H, i8 U4 z+ G/ J2 g
may have similar precocious puberty.3
* c8 D% D- f6 Q' f, x u" n- tIn our patient, physical examination was incon-
l0 I) i, O: |, d A- |+ b- osistent with true precocious puberty since his testi-' y; J& W" f/ k* K& p
cles were prepubertal in size. However, testotoxicosis
9 R3 E( D: b0 Rwas in the differential diagnosis because his father+ r* s- L! U1 W8 z9 \/ v
started puberty somewhat early, and occasionally,
" m0 R" p) Q( Z W) A( z7 ?testicular enlargement is not that evident in the
1 S+ m4 G! t. v, p# r6 ^1 ^beginning of this process.1 In the absence of a neg-- z' f; C# f$ X+ V6 Z6 X5 h. \
ative initial history of androgen exposure, our! f5 p: _: D t: A
biggest concern was virilizing adrenal hyperplasia,
" Q( Q4 j4 x5 w+ E$ Y' zeither 21-hydroxylase deficiency or 11-β hydroxylase
% b% J3 b W R$ E7 S) }deficiency. Those diagnoses were excluded by find-. A# x3 w) O. ]' N, a
ing the normal level of adrenal steroids.& t6 f/ o- U$ T0 P- o l
The diagnosis of exogenous androgens was strongly8 s0 V/ @! v- u
suspected in a follow-up visit after 4 months because
" t7 Y4 \# ~: P" Y3 B8 q1 _the physical examination revealed the complete disap-
4 L9 {' l1 A' d3 ypearance of pubic hair, normal growth velocity, and! i" @/ G/ e9 P9 ] n
decreased erections. The father admitted using a testos-9 f5 A6 ], S! `+ l# R
terone gel, which he concealed at first visit. He was3 g" }: p" Y+ i# E6 _2 P& j: J+ L& T
using it rather frequently, twice a day. The Physicians’
% J: v- Q$ _8 k2 E' G7 A, xDesk Reference, or package insert of this product, gel or/ Q3 p; ]( h0 ^6 A& I
cream, cautions about dermal testosterone transfer to
$ T4 d- S; a2 u. K& Wunprotected females through direct skin exposure.; A2 I+ C# g& d g; B' Z( I( n
Serum testosterone level was found to be 2 times the* G+ o$ }* ]/ V$ [7 e9 G
baseline value in those females who were exposed to \* i: e; H# p& r+ c$ u
even 15 minutes of direct skin contact with their male
4 H ?* x; V( U0 [1 M; S; Vpartners.6 However, when a shirt covered the applica-
. m7 T2 `1 ^5 B6 Dtion site, this testosterone transfer was prevented.# z& G0 p4 E+ l6 p+ x0 {0 x
Our patient’s testosterone level was 60 ng/mL,
8 y( f1 u* g Q& R& d3 owhich was clearly high. Some studies suggest that
( H0 y$ F N% l% \dermal conversion of testosterone to dihydrotestos-
" g$ X X& y& yterone, which is a more potent metabolite, is more8 `9 [+ Y6 b) {) S9 e
active in young children exposed to testosterone
7 |* m: B! u7 V% ]- d6 A) ?exogenously7; however, we did not measure a dihy-# @1 N, n! i! J$ D
drotestosterone level in our patient. In addition to/ v3 ?4 S0 D: u4 |5 A, f
virilization, exposure to exogenous testosterone in
' V0 E, s. B8 F. e& Schildren results in an increase in growth velocity and- r8 L. r% `5 X
advanced bone age, as seen in our patient.
4 L. q" E( y. x& d1 TThe long-term effect of androgen exposure during2 H+ s3 H! q# i0 q
early childhood on pubertal development and final
/ q1 c' k# m6 L) g4 a' E, F9 |adult height are not fully known and always remain/ ?' b+ i- h X- w9 H3 G5 D5 t, G
a concern. Children treated with short-term testos-# H" l+ U: z4 b+ X( a ^/ g
terone injection or topical androgen may exhibit some3 [7 F6 i X) w
acceleration of the skeletal maturation; however, after6 l5 W! }5 x: W9 r* I' |
cessation of treatment, the rate of bone maturation
# S4 \, ?% Y5 `$ W% y5 o$ z j: sdecelerates and gradually returns to normal.8,9
. ^8 g$ r2 @6 k5 L: D* n( iThere are conflicting reports and controversy( G$ j0 n2 L2 M: [! ?
over the effect of early androgen exposure on adult3 f- b+ h+ X3 Q2 b( X
penile length.10,11 Some reports suggest subnormal
! o) J/ D8 Y4 g9 ^2 C$ hadult penile length, apparently because of downreg-
, ^8 N. \: J4 n' P8 ?" ?2 gulation of androgen receptor number.10,12 However,; l% _1 V% V2 {
Sutherland et al13 did not find a correlation between
# r3 e- M: ^/ w# @3 {childhood testosterone exposure and reduced adult$ K- o+ z5 @! w
penile length in clinical studies.
& p8 \. U& H5 HNonetheless, we do not believe our patient is
- p. I8 C4 D% i9 h5 z B+ a! Agoing to experience any of the untoward effects from
" {2 w& D3 m% a7 P' Qtestosterone exposure as mentioned earlier because
9 P; T8 {/ M3 |3 B+ Nthe exposure was not for a prolonged period of time.
- l9 D3 }- o% V2 c) BAlthough the bone age was advanced at the time of
3 w! _- T. u% Jdiagnosis, the child had a normal growth velocity at
* X V+ E; Z5 ?" ~" i' P# h& N3 Xthe follow-up visit. It is hoped that his final adult
6 l- m: }' g3 s1 @+ d: I* h& Pheight will not be affected.! o, R- {1 f- ?9 a, x8 p( R
Although rarely reported, the widespread avail-8 F% g3 ^) T: Y! q/ a4 u% o
ability of androgen products in our society may" L0 V3 D; S. Y: R
indeed cause more virilization in male or female; m* `0 X3 g" M* A6 u% ]! |" h' L
children than one would realize. Exposure to andro- J! A; I5 m5 X. r2 n
gen products must be considered and specific ques-
- d% K% F, R1 C# p4 f$ Jtioning about the use of a testosterone product or4 E& ^3 X( I0 |: P# n7 `/ Z
gel should be asked of the family members during
( A4 ~! j2 F; Fthe evaluation of any children who present with vir-9 y; ?8 p# X$ a; \
ilization or peripheral precocious puberty. The diag-
! F& k: R) v6 n: S' [nosis can be established by just a few tests and by: _% t8 M/ ]9 _1 p; z, y
appropriate history. The inability to obtain such a3 m9 Z+ K: T9 F/ l# r$ U- r" m0 z
history, or failure to ask the specific questions, may
8 o+ Q: `5 Z% J9 W" S$ u$ cresult in extensive, unnecessary, and expensive
: R' G+ c. T3 ?7 Linvestigation. The primary care physician should be( J9 n! C* h Z+ p% F
aware of this fact, because most of these children
* g% s1 O; v8 x$ Xmay initially present in their practice. The Physicians’7 {% y! M* B: E. y# |/ ]0 b' z9 i
Desk Reference and package insert should also put a
) v& @0 Z, Z1 m4 m; p" A: ^ `/ @! Kwarning about the virilizing effect on a male or
$ Y( {6 Y; m, g0 ^6 T" Dfemale child who might come in contact with some-
# r7 b: x# S" j' Rone using any of these products.
+ a) m9 O! j! g! DReferences
# W9 }3 k1 o5 A% k$ P1. Styne DM. The testes: disorder of sexual differentiation& q9 N( u# @) ]* g. t" T, s: [
and puberty in the male. In: Sperling MA, ed. Pediatric
( K8 U/ f) h+ h7 {, V5 z% J E& |Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
2 w( ]7 d. Z% I, k f% O2002: 565-628.. L3 ^3 S6 |- |5 Z P7 H
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious: Z9 V% a4 h6 K& D4 `, J( ?0 Z# | ~
puberty in children with tumours of the suprasellar pineal( q1 D) E* z8 ^# B2 \; F1 N! u& A, l
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from6 ^1 _/ ]4 o% @; q$ S" W
Topical Testosterone Exposure / Bhowmick et al 543
% F) X1 _ ~3 H' R2 T% W/ k* {areas: organic central precocious puberty. Acta Paediatr.
! I" p4 `! g9 i, g1 _( r2001;90:751-756.
4 o" F x) K$ r2 c3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.& U0 @* G8 \* R8 ` s0 O
Pediatric Endocrinology. 4th ed. New York, NY: Marcel
4 w& v2 H* F5 u) T2 ~+ y# N) IDekker Inc; 2003:211-238.6 P* {/ P; h' q" ]7 B; U
4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
+ _' g6 [1 c; e' M9 h$ gdevelopment in a two-year-old boy induced by topical! C# [) m2 t/ G% ^
exposure to testosterone. Pediatrics. 1999;104:e23.- E0 X! B$ l8 a* _5 C3 n8 `' T0 r
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
5 S+ U, k/ f$ D! F: b$ lSkeletal Development of the Hand and Wrist. 2nd ed.& ]/ e$ G, ~2 R" J+ p
Stanford, CA: Stanford University Press; 1959.
9 t' s* M, x3 a. j* L: L1 k; y6. Physicians’ Desk Reference. Androgel 1% testosterone,
; z# T; _7 A" n2 p3 UUnimed Pharmaceutical Inc. Montvale, NJ: Medical
% Z. O- N) n( n9 l: ~Economics Company, Inc; 2004:3239-3241.
' c; f+ {# O* j$ b/ ?# c+ z4 w# f+ g7. Klugo RC, Cerny JC. Response of micropenis to topical5 T, ?8 p: z4 X
testosterone and gonadotropin. J Urol. 1978;119:$ k: _3 w8 v. L3 H
667-668.: @8 Q( Z# O: b) z _
8. Guthrie RD, Smith DW, Graham CB. Testosterone1 t3 X: l$ m8 X
treatment for micropenis during early childhood. J Pediatr.
{ _# S% y, J# K' ^! o1973;83:247-252.# H/ k" O5 N" l0 L4 ]; d! \/ g
9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone4 U8 B) u; A1 i% A% {# f
therapy for penile growth. Urol. 1975;6:708-710.
' n& D* X4 q6 k& C) C10. Husmann DA, Cain MP. Microphallus: eventual phallic# D! y5 v) o0 b
size is dependent on the timing of androgen administra-
6 `9 F$ e" t) Q7 G5 Xtion. J Urol. 1994;152:734-739.7 o/ v1 _0 u1 W" N4 h
11. McMahon DR, Kramer SA, Husmann DA. Micropenis:
; y4 p: U! q" @1 v- b5 Ydoes early treatment with testosterone do more harm- X9 z# }" b9 M n; s: }- R/ U
than good? J Urol. 1995;154:825-829.# G/ }2 x1 a; I( c
12. Takane KK, George FW, Wilson JD. Androgen receptor' N# t. Z9 K$ F8 X2 g
of rat penis is down-regulated by androgen. Am J Physiol.
0 D9 L' B( \, D1990;258:E46-E50., @5 x; x4 v! Z5 \6 H9 }
13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect; ?$ _4 T4 G* C; n
of prepubertal androgen exposure on adult penile
g4 I! |$ e$ r4 W* v! Mlength. J Urol. 1996;156:783-787. |
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