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is a significant concern for physicians. Central
. J3 I" w# H; T7 tprecocious puberty (CPP), which is mediated0 `3 A5 U, P; s! m6 p
through the hypothalamic pituitary gonadal axis, has
1 F! Y) n$ X6 c, l' P* s( Va higher incidence of organic central nervous system3 N$ [, B- U" g
lesions in boys.1,2 Virilization in boys, as manifested- H) h, s1 g6 }( d: J5 c M
by enlargement of the penis, development of pubic
' b" O8 V* E+ j6 {: fhair, and facial acne without enlargement of testi-
* n$ W4 m2 L& h# b& S% J+ ^9 M$ Hcles, suggests peripheral or pseudopuberty.1-3 We5 Y( }5 C, I( b$ Z/ S" H/ k
report a 16-month-old boy who presented with the" L) Z7 \' g g( \3 l& `3 m
enlargement of the phallus and pubic hair develop-
6 h8 s$ n( @2 { Sment without testicular enlargement, which was due S E2 ?. _0 a, i5 Z4 S1 C$ c8 J6 w
to the unintentional exposure to androgen gel used by! Q% T4 P% l5 O6 C
the father. The family initially concealed this infor-
/ j1 r+ U! l0 T( o1 _+ e) d' z) K% fmation, resulting in an extensive work-up for this7 B2 ~- N4 i6 S! `2 G
child. Given the widespread and easy availability of
" F1 l" l" A! L6 V7 s8 Jtestosterone gel and cream, we believe this is proba-$ a- l4 J, N0 N" `
bly more common than the rare case report in the
$ K" N+ H' a2 {0 V: c- Oliterature.4
1 C/ t1 F6 s# |- Y; ^( a% GPatient Report7 _/ X. y( H2 t1 x! r8 |3 Q) b+ Q
A 16-month-old white child was referred to the
3 [5 W7 X; h- m5 }endocrine clinic by his pediatrician with the concern, `# r- R, I5 Y \! k+ L
of early sexual development. His mother noticed# e1 o- m4 W1 u
light colored pubic hair development when he was
( E' b. R8 B' j3 T; S: A- jFrom the 1Division of Pediatric Endocrinology, 2University of
: D2 U! f9 n2 e$ h3 Z4 @South Alabama Medical Center, Mobile, Alabama.# @2 u# T+ s' r. t, u* H
Address correspondence to: Samar K. Bhowmick, MD, FACE,3 Q: G" n9 x/ j# E
Professor of Pediatrics, University of South Alabama, College of0 ]7 S s) i3 M( H* G9 a# J
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;, O* `2 p+ J- `" ] U1 T
e-mail: [email protected].
4 B/ R I1 V. B4 ^. {8 `! mabout 6 to 7 months old, which progressively became
/ D5 D" h0 a# t: ~: adarker. She was also concerned about the enlarge-
. \/ F4 W* J! z. Oment of his penis and frequent erections. The child
3 w: i2 a8 {& [ _6 kwas the product of a full-term normal delivery, with
: F$ [0 R! b4 F+ [a birth weight of 7 lb 14 oz, and birth length of
& {, K9 @" Q* s3 |20 inches. He was breast-fed throughout the first year
9 P; n/ e2 \" `of life and was still receiving breast milk along with, t6 Q {* L& t2 i- y# ?' T2 c
solid food. He had no hospitalizations or surgery,; m* s. p! h3 U& M5 ]3 V
and his psychosocial and psychomotor development" Y% ?' Q, i1 f! k3 v
was age appropriate.
% x6 O3 P# u/ \$ qThe family history was remarkable for the father,
- W7 S+ Z- l9 e3 Ywho was diagnosed with hypothyroidism at age 16,
u2 |1 k$ \% c3 c9 v- G+ |which was treated with thyroxine. The father’s1 ]( L7 e9 f8 F$ U) B( b# A
height was 6 feet, and he went through a somewhat9 X1 O& I1 z8 t" Z j7 _: A$ ?
early puberty and had stopped growing by age 14.; J/ J1 h. f- [; C7 L$ s- y
The father denied taking any other medication. The
$ j+ `9 Z4 A" R2 ~4 e7 `7 _3 n5 kchild’s mother was in good health. Her menarche4 s& R6 R# c( A: L- J! Y5 l
was at 11 years of age, and her height was at 5 feet2 J# d; f% w% o; U3 d* N) n
5 inches. There was no other family history of pre-
+ v# v0 ?7 l% b1 a0 J9 scocious sexual development in the first-degree rela-2 K* g9 P5 Q! Y* ]1 l5 }* T+ D
tives. There were no siblings.( ~# [3 N& x$ s. j8 D
Physical Examination* j J- b) d% d4 I% V
The physical examination revealed a very active,& e# R0 }- P4 J/ J8 o# @3 h' C
playful, and healthy boy. The vital signs documented
# v' @" J/ }1 v' e& M4 ]% `" Ua blood pressure of 85/50 mm Hg, his length was- B& P0 z% u4 l' D" l" s9 X
90 cm (>97th percentile), and his weight was 14.4 kg
- ]; I7 A9 Z) E) y(also >97th percentile). The observed yearly growth
. e7 z9 \9 q( E) xvelocity was 30 cm (12 inches). The examination of
\& H5 q; q6 T @, ^the neck revealed no thyroid enlargement.
8 `; K3 z8 b* r: f, a: hThe genitourinary examination was remarkable for
9 Z& i3 g) b* _6 Henlargement of the penis, with a stretched length of
$ C) O( `2 b0 c; l8 cm and a width of 2 cm. The glans penis was very well
$ S% G; O+ ~( Ddeveloped. The pubic hair was Tanner II, mostly around
. Y& T R0 v9 Q5409 o+ b4 a* ~& x. `
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
. t- Z. l) X9 i, ?1 [, |the base of the phallus and was dark and curled. The
4 E2 p% l& t) M; q# f8 b6 r# x% `testicular volume was prepubertal at 2 mL each.
5 ^ E5 i: P' n4 i/ o4 cThe skin was moist and smooth and somewhat
4 W8 o% J5 V g/ J2 J }; D" ~oily. No axillary hair was noted. There were no4 |0 |+ W9 D5 I- |3 [ I4 T
abnormal skin pigmentations or café-au-lait spots.
$ B9 q; X( v6 A! K! I% KNeurologic evaluation showed deep tendon reflex 2+
. S( [1 g+ V' Bbilateral and symmetrical. There was no suggestion. N. I) q/ X0 v/ ^- ?, [4 i
of papilledema.3 P% L% l v8 }4 h
Laboratory Evaluation' z# C6 s! Y* c; S
The bone age was consistent with 28 months by1 I& r" @: M3 d$ Y& ^
using the standard of Greulich and Pyle at a chrono-
8 x( I9 O# ^3 j k! p$ _logic age of 16 months (advanced).5 Chromosomal4 i9 h; O. Z: F1 K, x
karyotype was 46XY. The thyroid function test! n$ L( u* u9 V! P& v
showed a free T4 of 1.69 ng/dL, and thyroid stimu-
5 T! J# J' }) Y9 plating hormone level was 1.3 µIU/mL (both normal).& D- S* p+ T9 k* X; O5 J, c. K: G
The concentrations of serum electrolytes, blood
& r: [- [# ^2 @- Y( f; \5 Gurea nitrogen, creatinine, and calcium all were
7 z" c; D$ _" u- |: O5 F- twithin normal range for his age. The concentration6 d4 c/ e6 y1 x9 x: Y+ |2 ~3 t
of serum 17-hydroxyprogesterone was 16 ng/dL
2 V9 w+ d' M1 A" u# E7 L(normal, 3 to 90 ng/dL), androstenedione was 20
: e* ~' k6 \" o' `' q1 nng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-* b- s2 D: ^$ z N2 i5 y2 o
terone was 38 ng/dL (normal, 50 to 760 ng/dL),! {. L. c& Q. G; x( r/ j
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
6 _! l% e4 x0 F( {% y1 D: z0 p49ng/dL), 11-desoxycortisol (specific compound S)" V% h: ~, ?' v: N' Z* ]+ i) `
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
1 {# }( V7 w; Mtisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
% V. m9 V- {) F6 \6 dtestosterone was 60 ng/dL (normal <3 to 10 ng/dL),
7 h# f0 [; T5 {& |4 ^* n% @3 D$ kand β-human chorionic gonadotropin was less than
6 r) \, P& O" q7 A) O0 P) C, ~5 mIU/mL (normal <5 mIU/mL). Serum follicular
: c" S; ^. O, Q1 l# Gstimulating hormone and leuteinizing hormone
5 n7 w5 m/ d3 o& @9 a+ n3 z/ Wconcentrations were less than 0.05 mIU/mL& V4 l% e7 f1 ~2 b4 q/ h! f
(prepubertal).9 M3 @! E3 i9 E4 Z6 C1 V3 z, M
The parents were notified about the laboratory# A* y, r% R. [$ @+ t
results and were informed that all of the tests were+ f1 |$ f3 P. s( S
normal except the testosterone level was high. The
- C8 R0 D( M& d6 Y. U( H& n% @follow-up visit was arranged within a few weeks to
7 {& e* D0 _# s! ~4 n6 [- Tobtain testicular and abdominal sonograms; how-7 `( e: @, g$ c2 I
ever, the family did not return for 4 months.: N) _5 u( r+ w5 r4 V+ R7 f; E
Physical examination at this time revealed that the
u0 ? e/ ~2 K |# E8 S: h' _child had grown 2.5 cm in 4 months and had gained
1 E( Q5 \3 ]6 l7 ?4 z2 C, E; [- U2 kg of weight. Physical examination remained
, O* |" w; v# Z7 qunchanged. Surprisingly, the pubic hair almost com-
8 a5 u x# _+ E' Cpletely disappeared except for a few vellous hairs at, D0 {4 u. U1 c; K4 o7 l4 b) r5 j, e
the base of the phallus. Testicular volume was still 2
+ M: l! }( t3 |3 A$ n5 b+ q5 x4 imL, and the size of the penis remained unchanged.
8 K( H3 o) V2 P. N# t1 A% X" |! qThe mother also said that the boy was no longer hav-( [% L0 R% ?' R5 }! m" b2 Q
ing frequent erections.
. ]+ C% n* Y' j8 S* U( K7 k; HBoth parents were again questioned about use of0 W; J6 M( @( s; |5 R6 K& a
any ointment/creams that they may have applied to
! I) j- |2 o$ |6 ythe child’s skin. This time the father admitted the
5 _8 f5 F1 w; }$ |Topical Testosterone Exposure / Bhowmick et al 5416 @, E7 K6 l' W2 R* ?
use of testosterone gel twice daily that he was apply-; Y- S: P z2 M) A
ing over his own shoulders, chest, and back area for
$ ]. g$ J- f( `+ @a year. The father also revealed he was embarrassed
0 @: Q/ ]9 ~# {" Ato disclose that he was using a testosterone gel pre-
3 W. _% J7 V& R7 T- l; S" f* Sscribed by his family physician for decreased libido" d* ~% j* w$ D. M3 p A
secondary to depression.
+ ]! O" V& e* fThe child slept in the same bed with parents.
0 O; i% N: Z4 ]9 ^, g; oThe father would hug the baby and hold him on his
, h1 a! |6 Y: e1 L; _chest for a considerable period of time, causing sig-
7 [& r9 K; f1 _% X+ }nificant bare skin contact between baby and father.
* t( k) S" O, V. fThe father also admitted that after the phone call," D$ P" Y; c5 ^+ k# C, \; C. Q8 u
when he learned the testosterone level in the baby/ i7 ]; q, ]! ?: U
was high, he then read the product information0 d" g+ V+ ~) M' e1 U
packet and concluded that it was most likely the rea-% @0 Z+ T/ J+ c7 ?6 h
son for the child’s virilization. At that time, they
) Y& k: q$ x& f: v1 F5 [- }: ddecided to put the baby in a separate bed, and the$ i% b- z' s! ?" k" |+ b
father was not hugging him with bare skin and had
' b9 x# O3 |4 Y4 bbeen using protective clothing. A repeat testosterone" k% A# v) ~+ H0 X# A
test was ordered, but the family did not go to the# w" n! z3 V$ E
laboratory to obtain the test.
l7 k" j& V7 n8 R1 O nDiscussion: L% O. z( `! @! N# S+ w- k
Precocious puberty in boys is defined as secondary& q" g# J6 f! U# R4 R! `: f
sexual development before 9 years of age.1,4
6 ^3 _1 z2 t1 ~7 t: l$ u! Q$ kPrecocious puberty is termed as central (true) when* H4 U; A4 Y; p+ b
it is caused by the premature activation of hypo-8 c6 R' G" i6 \2 r5 Y$ H: G
thalamic pituitary gonadal axis. CPP is more com-
& i* X: z) D4 B0 G% @$ ~mon in girls than in boys.1,3 Most boys with CPP
0 B* C+ t4 \1 N! X# _9 jmay have a central nervous system lesion that is, m% v4 A! p8 e+ P7 [
responsible for the early activation of the hypothal-5 q# s8 ~$ S0 ^2 P9 N$ Q" |+ i+ x
amic pituitary gonadal axis.1-3 Thus, greater empha-
8 J# U- ~ ?/ l4 b; usis has been given to neuroradiologic imaging in: Q' ~" ?( @9 c
boys with precocious puberty. In addition to viril-+ m" Q! ?7 s4 B& ]( |
ization, the clinical hallmark of CPP is the symmet-$ A$ S1 [# Y" a1 v) V0 r8 X
rical testicular growth secondary to stimulation by+ D `6 ^8 u% S6 p" D/ F" D. S5 X
gonadotropins.1,3
: N+ P z: g; V3 ]* MGonadotropin-independent peripheral preco-, N* s0 @( |# A- Z& }
cious puberty in boys also results from inappropriate
9 y, [5 p8 R; F- z t0 ~% ~5 [0 {androgenic stimulation from either endogenous or
; G" E8 G" k4 x3 Qexogenous sources, nonpituitary gonadotropin stim-
. H4 h _3 j9 A) Mulation, and rare activating mutations.3 Virilizing
" C7 Q# ^6 y& v# Q& I( U9 k. w7 Econgenital adrenal hyperplasia producing excessive
0 ]$ ^7 m' R7 r4 k* r, u3 z$ xadrenal androgens is a common cause of precocious0 ]1 y& m$ q* P9 N
puberty in boys.3,4
4 V0 z' B, l5 @ b3 ^7 z2 H' cThe most common form of congenital adrenal
2 Q6 ?, ?7 m' ^hyperplasia is the 21-hydroxylase enzyme deficiency.
& @7 O9 }6 ~2 f5 iThe 11-β hydroxylase deficiency may also result in, B* [( E% J7 k9 q0 J4 t. N: e1 |1 @ t
excessive adrenal androgen production, and rarely,
" v) ^2 n, w; C5 \4 R3 ]2 H5 Dan adrenal tumor may also cause adrenal androgen
! p4 [3 K% H5 y3 z6 P# x$ w: Z% ]excess.1,3
7 X- i1 ?3 f+ k& D; ^at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from% x- I- d- o; @0 l
542 Clinical Pediatrics / Vol. 46, No. 6, July 20077 H6 @- W/ R- n5 Y W
A unique entity of male-limited gonadotropin-* `. k& K H# f
independent precocious puberty, which is also known. j* C1 n0 v; W& x# s
as testotoxicosis, may cause precocious puberty at a! Y. `* y" R7 `
very young age. The physical findings in these boys
/ K% ` Q/ V, Y% x% ^+ `( T+ Lwith this disorder are full pubertal development,2 I, O# m% g: p
including bilateral testicular growth, similar to boys
6 r! i$ M7 t) kwith CPP. The gonadotropin levels in this disorder
3 V" D) G% |; Y1 t# ~3 m8 K* Z" eare suppressed to prepubertal levels and do not show, S% D6 N1 N" S9 `4 `2 w: O& k) Y( X. N
pubertal response of gonadotropin after gonadotropin-, o5 v2 ^5 w7 ^" E" \" B
releasing hormone stimulation. This is a sex-linked. e& v% W p8 y" [( \0 l' ~6 c% }) y
autosomal dominant disorder that affects only ]5 P0 y& @1 J' }
males; therefore, other male members of the family
; l3 W, g% J# \6 fmay have similar precocious puberty.3' ]0 S0 w/ J3 d# \" x% Z' `
In our patient, physical examination was incon-2 L1 q; X( D3 ^/ P* }0 G8 ?
sistent with true precocious puberty since his testi-
2 w( ?5 D: B% ~" pcles were prepubertal in size. However, testotoxicosis
M" @2 S; R B- Xwas in the differential diagnosis because his father
1 g$ d8 @) l1 s+ A5 T$ v7 Jstarted puberty somewhat early, and occasionally,% o9 v( _# V* s8 l, p; F
testicular enlargement is not that evident in the! \( v# f' W( j% ?5 m9 p
beginning of this process.1 In the absence of a neg-4 D/ Z4 S; Z- E) B+ m+ \2 e3 ~
ative initial history of androgen exposure, our
! U J. B7 P8 O: Q2 Rbiggest concern was virilizing adrenal hyperplasia,0 |* D% [$ Q) y1 I# q: x1 v- W
either 21-hydroxylase deficiency or 11-β hydroxylase& j; E% R5 g6 {, e7 M
deficiency. Those diagnoses were excluded by find-+ m" P! o5 r5 S) U- H1 n8 j% v
ing the normal level of adrenal steroids.
9 R2 b5 H6 c4 H# p# _The diagnosis of exogenous androgens was strongly5 o8 I/ d j! F" [$ z9 M
suspected in a follow-up visit after 4 months because
3 z) P+ y- c* Zthe physical examination revealed the complete disap-: q8 s5 B0 l+ ?- e3 m" A) F
pearance of pubic hair, normal growth velocity, and
% o7 c. E" E# r1 s) M5 G* B4 J8 bdecreased erections. The father admitted using a testos-
( _# V4 c4 i3 `, @terone gel, which he concealed at first visit. He was
d3 [# S0 z" v& ]( zusing it rather frequently, twice a day. The Physicians’8 w& s) K$ }) X) g, s4 n0 i9 n
Desk Reference, or package insert of this product, gel or' q) v3 y$ h I3 s B; o& \
cream, cautions about dermal testosterone transfer to
- }/ G3 {2 f; n+ M0 Y! o I. [/ Uunprotected females through direct skin exposure.
# Y+ z* J! @2 t9 cSerum testosterone level was found to be 2 times the
7 F5 ^2 C. O' P" xbaseline value in those females who were exposed to- V# o" Q; n0 t7 b @
even 15 minutes of direct skin contact with their male( G) K$ r7 m5 K" D
partners.6 However, when a shirt covered the applica-+ c1 Z @- V7 J% K
tion site, this testosterone transfer was prevented.: W- H8 U, F+ c) G
Our patient’s testosterone level was 60 ng/mL,& ~" E$ m+ I' C9 C0 a9 F
which was clearly high. Some studies suggest that9 _. J' a3 ^$ M3 k+ P( @
dermal conversion of testosterone to dihydrotestos-9 N2 D. Q* K6 P. W0 a* A# e
terone, which is a more potent metabolite, is more* [ J3 d& [0 B( h; O! J, e) ^( [
active in young children exposed to testosterone
' V; A, X3 B. Yexogenously7; however, we did not measure a dihy-
/ d* |/ F" E# P4 B1 I9 D) bdrotestosterone level in our patient. In addition to
$ n% w. K. H" z' E* d( bvirilization, exposure to exogenous testosterone in
4 d5 l5 N/ k) vchildren results in an increase in growth velocity and# l$ ]! C: n+ A* T1 j+ r
advanced bone age, as seen in our patient.
% U( S+ J/ z, J a3 UThe long-term effect of androgen exposure during
. l& K' R; D' Q% k. D) `# `early childhood on pubertal development and final7 u/ p& i! t2 S5 ]! Z+ X
adult height are not fully known and always remain
, T1 ]2 t+ q1 p. x) H6 ja concern. Children treated with short-term testos-
& {8 l4 y9 }/ B0 W" W9 Bterone injection or topical androgen may exhibit some
' I, y, J0 b3 A: c0 Y2 n! }. ?) hacceleration of the skeletal maturation; however, after& t. G# F+ ^8 q' C: T8 T0 D, @8 Q# ^
cessation of treatment, the rate of bone maturation+ I4 e, c6 i( _! K9 T2 K
decelerates and gradually returns to normal.8,9
9 M+ R n2 k. H2 [There are conflicting reports and controversy
# c, Q3 L# @8 S/ jover the effect of early androgen exposure on adult
: \, p; Z- o5 Q0 o Vpenile length.10,11 Some reports suggest subnormal( F& G. S6 }5 Y1 @5 F: d' b, C
adult penile length, apparently because of downreg-
* w! y; L- j( ?5 Bulation of androgen receptor number.10,12 However," P, D$ s& m* e p! {. i
Sutherland et al13 did not find a correlation between/ t, o+ s3 B/ Q) p) `6 A x0 g! U
childhood testosterone exposure and reduced adult
2 S9 @ G/ f, S4 U9 Hpenile length in clinical studies.
, U9 V5 B/ X& V% e- `Nonetheless, we do not believe our patient is. k/ v; ?5 s% T7 \
going to experience any of the untoward effects from
( R1 k# A0 ]! ^2 d$ ~; X2 F ~6 @testosterone exposure as mentioned earlier because
) c' s4 ]3 _8 p. i( T/ \% ithe exposure was not for a prolonged period of time.
) q* z5 {/ ?8 r, l, eAlthough the bone age was advanced at the time of
! g: B# f# u1 @7 R2 w" i: V& xdiagnosis, the child had a normal growth velocity at
0 |! ^4 c0 p0 a. Q$ uthe follow-up visit. It is hoped that his final adult) H' F# S2 o& `% \4 ~
height will not be affected." q$ W) ?5 L0 D6 V# h
Although rarely reported, the widespread avail-+ {# G4 m9 ?1 n: c3 f
ability of androgen products in our society may
+ ]; B5 |5 [3 W8 vindeed cause more virilization in male or female+ v/ v1 w/ a, m1 _
children than one would realize. Exposure to andro-
7 Z G( M* R0 ^gen products must be considered and specific ques-' L: U. U1 ?6 g4 _8 \% s
tioning about the use of a testosterone product or" j. V8 F& F$ W
gel should be asked of the family members during% N* M, D* G# q8 N+ M# M8 T) u
the evaluation of any children who present with vir-
8 i, t7 `( p0 F! n) filization or peripheral precocious puberty. The diag-
/ B8 z5 j8 k) L4 ?+ g9 {3 Bnosis can be established by just a few tests and by
( Q1 D9 L2 p- ?7 `) wappropriate history. The inability to obtain such a5 p+ _# @" ^; O6 r9 B
history, or failure to ask the specific questions, may
$ U* ^! m0 P5 T" m9 Bresult in extensive, unnecessary, and expensive3 E: Z4 T$ L9 o: V3 I. J& q. q5 @
investigation. The primary care physician should be
, x O, m* B" L. |7 y5 D A0 U! Q" oaware of this fact, because most of these children
0 T( ]: J: ^' n- imay initially present in their practice. The Physicians’$ }; b8 U4 h& g: W; J( p! b
Desk Reference and package insert should also put a' t7 H: n/ z) H5 ~" g: M) P, ]! T
warning about the virilizing effect on a male or
/ u, F& Y4 _1 e' Jfemale child who might come in contact with some-$ B* Z. S* h1 O$ {' `9 }
one using any of these products.
7 t$ b# \/ [+ i mReferences" x3 U/ G* U' G. {. n0 H
1. Styne DM. The testes: disorder of sexual differentiation( _% o6 ]/ w7 @: h2 T% c
and puberty in the male. In: Sperling MA, ed. Pediatric; B* r9 w1 |5 p) j% g$ A n+ ^' c
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
+ Z- K q2 l) h- m2002: 565-628." X. e4 {; z7 @3 J6 l) W
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
* k; _. Q' w* {( L- F z, W1 Fpuberty in children with tumours of the suprasellar pineal
# q8 J* K; {! o6 l9 m) Dat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
3 l8 [. H! W* F3 m9 {Topical Testosterone Exposure / Bhowmick et al 5433 O0 o) c# M$ o+ A) J7 s; p: h7 S+ s
areas: organic central precocious puberty. Acta Paediatr.
$ v6 Q6 d& U. u, n" D R: j2001;90:751-756.9 h" ] ~! w, n. A$ d! s! p8 b1 n8 M
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.4 M2 t$ C1 P& }! v4 q/ S. u
Pediatric Endocrinology. 4th ed. New York, NY: Marcel
$ O+ v# R1 l6 P! VDekker Inc; 2003:211-238.
; h, U% [7 g! @ K" @* s1 K( T- Q" q4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual M: K5 X: j, h% X; J& S$ y
development in a two-year-old boy induced by topical2 ^4 v* y2 P7 ~
exposure to testosterone. Pediatrics. 1999;104:e23.' L) l2 A, |; H r ?
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of" ^" Z. K! f; a) H: ?. h4 J
Skeletal Development of the Hand and Wrist. 2nd ed.
: j4 `! Q6 p7 LStanford, CA: Stanford University Press; 1959.
+ U8 l# ?% Z& }9 u p3 O6. Physicians’ Desk Reference. Androgel 1% testosterone,
$ Z8 m1 P: l8 }& I3 dUnimed Pharmaceutical Inc. Montvale, NJ: Medical' i `% z0 S: w$ B8 n7 u
Economics Company, Inc; 2004:3239-3241.
5 e t9 l8 h" R6 v7. Klugo RC, Cerny JC. Response of micropenis to topical
+ k0 o2 { S$ {0 o2 a# l4 Gtestosterone and gonadotropin. J Urol. 1978;119:
: Y! W% z3 i5 V1 u* r667-668./ Z' j+ @. _2 Q" R
8. Guthrie RD, Smith DW, Graham CB. Testosterone# K) H5 M0 D8 T+ v$ ]- k5 F
treatment for micropenis during early childhood. J Pediatr.
]) h$ c) `# i+ s* O+ G) o D4 i1973;83:247-252.- d5 T+ M% j& b+ ]8 x
9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone
2 |: C! @' S$ K- V1 mtherapy for penile growth. Urol. 1975;6:708-710.
f2 x8 l* Y- R/ i' Y4 z( y7 i10. Husmann DA, Cain MP. Microphallus: eventual phallic
* e" v$ |7 s) W. h. S/ Wsize is dependent on the timing of androgen administra-3 a6 q% \8 B. P5 g& F4 ]+ r& O
tion. J Urol. 1994;152:734-739.% L" C2 Z$ K8 o& q6 a
11. McMahon DR, Kramer SA, Husmann DA. Micropenis:
2 f/ @: B" J2 Y6 _! vdoes early treatment with testosterone do more harm$ Z0 k2 d# p! n- Z1 q% E5 ^' [
than good? J Urol. 1995;154:825-829.
( P1 T D) S( H4 }& B12. Takane KK, George FW, Wilson JD. Androgen receptor
6 M3 J0 X/ G+ `: c7 `' |of rat penis is down-regulated by androgen. Am J Physiol.
* f, P; ^3 q. X( J1990;258:E46-E50.
' @0 o8 W3 Z% R! a13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect5 S2 ]4 \# X" m2 H; W. N9 N
of prepubertal androgen exposure on adult penile+ g* y! ^1 I7 O8 A9 g
length. J Urol. 1996;156:783-787. |
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