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is a significant concern for physicians. Central/ F2 L! H) m8 b# F; `1 b
precocious puberty (CPP), which is mediated! K9 i$ ]+ }! K- v! ], m! Q4 R
through the hypothalamic pituitary gonadal axis, has% `( z$ h$ v# o+ I/ u
a higher incidence of organic central nervous system% S9 b0 K" a( I- F9 N) D# g
lesions in boys.1,2 Virilization in boys, as manifested
$ P9 R; v3 W3 Y+ X- I; _4 h' Fby enlargement of the penis, development of pubic; s! E: z; v0 _5 k" G
hair, and facial acne without enlargement of testi-2 K/ A: m8 v' g' n) @& ]
cles, suggests peripheral or pseudopuberty.1-3 We
2 F" S! G8 x* f6 |, preport a 16-month-old boy who presented with the+ S, U, D, W K8 Q. U& E) `4 B0 |5 ]
enlargement of the phallus and pubic hair develop-+ U S1 k+ E: f+ p
ment without testicular enlargement, which was due. J4 N/ M6 s( U$ ~* s7 c) R
to the unintentional exposure to androgen gel used by
; m0 M, O! [6 {! v# S7 n: N# l; @the father. The family initially concealed this infor-
+ f! d- f8 `# a1 |' D gmation, resulting in an extensive work-up for this5 G" Y5 U o- `# M. \& b
child. Given the widespread and easy availability of
/ `! ~* v& |, m7 O9 g! s. i2 ], n% ^6 Rtestosterone gel and cream, we believe this is proba-$ l4 \0 B5 a; i2 g+ K5 H9 |1 f
bly more common than the rare case report in the @: S2 }8 o" O l8 y7 l8 E: @$ _
literature.4
B5 `- E- T# C! o. Y2 |+ R( b: gPatient Report; w3 \& C: ? q e1 X
A 16-month-old white child was referred to the/ H1 C) V2 s3 c6 X2 u
endocrine clinic by his pediatrician with the concern4 |: p: w0 g/ m% C1 T) U6 v p6 h
of early sexual development. His mother noticed
& Q% o. i3 ?4 f- T+ {! g- X& Wlight colored pubic hair development when he was
- F. _! }9 c9 x& T N, O8 k" k& R# vFrom the 1Division of Pediatric Endocrinology, 2University of
6 x+ z) i4 r4 D: j Z6 x. z3 rSouth Alabama Medical Center, Mobile, Alabama.
# p0 K, ~0 }; q @- o0 z* W: u8 VAddress correspondence to: Samar K. Bhowmick, MD, FACE,
! x7 d6 M" F. Z8 O4 C, R4 eProfessor of Pediatrics, University of South Alabama, College of% I, X0 |+ f, W/ c- ]
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
! ^ F: ]/ Y$ Oe-mail: [email protected].
+ \/ Y" x1 M3 ^# `7 ^# d e; K9 w) M+ Vabout 6 to 7 months old, which progressively became, Y6 J$ V8 _6 K( }) Q
darker. She was also concerned about the enlarge-
/ c7 W2 }! L3 J# yment of his penis and frequent erections. The child: G5 o2 |/ X* R; ~1 L/ g
was the product of a full-term normal delivery, with' Z) E( G! Y& h. j7 x9 a
a birth weight of 7 lb 14 oz, and birth length of/ T$ c4 V+ J# N o0 }
20 inches. He was breast-fed throughout the first year
& \$ s6 I! d, C- P* h; q3 g& m% }of life and was still receiving breast milk along with. o* m5 R& }: ?8 ^# o$ C
solid food. He had no hospitalizations or surgery,$ F; ^$ W' d5 ^0 H' S
and his psychosocial and psychomotor development
! x8 _2 h4 R; S, `- X1 vwas age appropriate.& G) h, A6 p2 L
The family history was remarkable for the father,
, t1 u( Z' l2 ]! W6 E7 O) |who was diagnosed with hypothyroidism at age 16,
* T0 o+ X& M+ n7 D7 A: V% X4 pwhich was treated with thyroxine. The father’s; D, R4 g! H6 [, P
height was 6 feet, and he went through a somewhat
' w4 a+ @0 l( E6 f" l8 mearly puberty and had stopped growing by age 14.7 C! G6 `& _+ t9 T+ Q
The father denied taking any other medication. The% `4 ]) Q& b% ?9 {% }2 h0 U( E: N4 K
child’s mother was in good health. Her menarche7 c: {7 h5 Y( _- K$ A9 g6 l; s
was at 11 years of age, and her height was at 5 feet Z4 P3 A2 P" U* M) H9 Q) ^2 `/ ?. @, t
5 inches. There was no other family history of pre-; E' k4 M# I& i h# I: ^3 y, E7 m
cocious sexual development in the first-degree rela-2 N+ V. Z7 q1 n8 Z* [5 c1 |
tives. There were no siblings.' |" r# `+ S! b! k- D8 y5 a
Physical Examination
( B+ B( A: \, _ rThe physical examination revealed a very active,( t) V8 r# j: f# B
playful, and healthy boy. The vital signs documented$ F. a2 b- f( N- }1 D
a blood pressure of 85/50 mm Hg, his length was
4 a# B8 m9 N$ H5 V% K: G2 }1 L90 cm (>97th percentile), and his weight was 14.4 kg( c) p5 Q2 k$ }1 U2 R# u
(also >97th percentile). The observed yearly growth
2 R" k9 }2 y- w' J/ A! _ h/ Gvelocity was 30 cm (12 inches). The examination of
& g4 s5 m, z z& X+ a' O5 w1 Vthe neck revealed no thyroid enlargement.
1 p; E+ f4 G3 d( u4 ]4 _The genitourinary examination was remarkable for6 Z+ [9 l4 y! C3 Y! g
enlargement of the penis, with a stretched length of
# F/ K4 e( A# A' D' s* N! b' D) Q8 p9 J8 cm and a width of 2 cm. The glans penis was very well. L6 h& m C3 o( C* I; ]
developed. The pubic hair was Tanner II, mostly around8 t" U: D* Y5 L% n5 G! m
540
$ M/ @ Q5 V) c& |1 Iat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from- B6 H5 r+ O, E4 [/ h
the base of the phallus and was dark and curled. The
% l# C. h8 E, H' ptesticular volume was prepubertal at 2 mL each.+ u" ~- m/ |) C F) Y9 k: w
The skin was moist and smooth and somewhat
: _5 T. m6 Y; m. q- B: o( [oily. No axillary hair was noted. There were no
% m& U0 z9 h9 O! u* gabnormal skin pigmentations or café-au-lait spots.
4 [. P8 W- s3 M! RNeurologic evaluation showed deep tendon reflex 2+
% |9 ?. b* t' R- `6 U3 `bilateral and symmetrical. There was no suggestion( P: }, m. C% C/ e( e' o1 e
of papilledema.3 J5 r' A' ?$ b
Laboratory Evaluation9 i, p( F$ S/ X# p: r, ? n
The bone age was consistent with 28 months by! o$ F, u( u7 M2 Q! g
using the standard of Greulich and Pyle at a chrono-
$ b. [' ^+ N2 G% p5 N0 q: E2 N. @logic age of 16 months (advanced).5 Chromosomal
% }3 Y* W! e' @/ ^" D3 s* u- ~karyotype was 46XY. The thyroid function test
) X" B6 L/ @ C: Y5 {showed a free T4 of 1.69 ng/dL, and thyroid stimu-
3 f9 M! _6 A6 Q3 |8 j( glating hormone level was 1.3 µIU/mL (both normal).# e9 r0 L) u/ T. r2 }4 t# T
The concentrations of serum electrolytes, blood
) k& D/ M5 B i8 c% E# surea nitrogen, creatinine, and calcium all were* Y1 @$ [( r* Q" i7 E
within normal range for his age. The concentration
& { t! C' r1 _ g" G6 q y p' vof serum 17-hydroxyprogesterone was 16 ng/dL
0 @6 }9 {( O% d9 [(normal, 3 to 90 ng/dL), androstenedione was 20/ J j: I+ A3 J! h! c) X( d: r J
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
, ]# O( C( e/ E7 e( tterone was 38 ng/dL (normal, 50 to 760 ng/dL),' Q. Q4 i# l/ j
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
7 E& ?6 k" g' ~$ l# I7 D: s& R49ng/dL), 11-desoxycortisol (specific compound S)3 x, C5 _( [ G6 G- p% V
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-9 ]) g4 y2 z! N5 K) H
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
w9 |8 A! P E% {' atestosterone was 60 ng/dL (normal <3 to 10 ng/dL),% n" H$ e' N; i. C9 H6 X7 A" p
and β-human chorionic gonadotropin was less than" I/ B% n# @( A7 ~6 d
5 mIU/mL (normal <5 mIU/mL). Serum follicular K6 W" C2 r0 ^- ^
stimulating hormone and leuteinizing hormone
3 d) i+ m" _% Tconcentrations were less than 0.05 mIU/mL5 n- X5 K4 [" F1 L2 L$ l+ I6 s
(prepubertal).( Q. N3 E# o, D$ j+ Y+ [( j! r) \
The parents were notified about the laboratory
% w O) c, S3 Fresults and were informed that all of the tests were& i/ ]- \' A P" y6 P9 ^
normal except the testosterone level was high. The
0 s1 A2 J L2 I' b( D; tfollow-up visit was arranged within a few weeks to, d! S7 f, U- f
obtain testicular and abdominal sonograms; how-3 I7 W& l* z; \
ever, the family did not return for 4 months.+ c/ d- w! n/ T1 m+ E7 a
Physical examination at this time revealed that the
: I. K9 w3 A* [7 V/ kchild had grown 2.5 cm in 4 months and had gained( v5 i- z# [+ ~& F* ?: z. J" Q
2 kg of weight. Physical examination remained% d6 e4 T) [0 m2 D0 W
unchanged. Surprisingly, the pubic hair almost com-. |2 }! C' R) M: a. `; A
pletely disappeared except for a few vellous hairs at
3 {& J) c; j5 z1 g: c i2 Z* _the base of the phallus. Testicular volume was still 2+ z% o$ F9 g' s4 C- o- w
mL, and the size of the penis remained unchanged." A5 E$ x9 s. ]3 }9 n# t! `1 v y
The mother also said that the boy was no longer hav-. S) ^: d! C+ f+ T7 g" o
ing frequent erections.
' {( H4 c& B0 NBoth parents were again questioned about use of: ^2 B; Z3 S% ^& Y& |( I
any ointment/creams that they may have applied to+ p: K# r: C, m, Z1 `7 G% \, E6 T% k
the child’s skin. This time the father admitted the
- [& w! Q \; [( b8 LTopical Testosterone Exposure / Bhowmick et al 541
/ p$ X" d. I8 Z: \( quse of testosterone gel twice daily that he was apply-! b/ U+ V$ C& D) l( Y
ing over his own shoulders, chest, and back area for
) f l' U% N% f, Y8 T' L1 i& Ja year. The father also revealed he was embarrassed
0 u7 L' k: j7 L/ Z1 }: F* {7 _* Hto disclose that he was using a testosterone gel pre-
1 _& Z* p! Z4 @$ m( ^2 Dscribed by his family physician for decreased libido v$ K% G3 s8 z
secondary to depression.$ x$ r g4 _. A1 L+ l
The child slept in the same bed with parents.
: M1 Z. P# j" W$ P! w( T S* P2 d+ ZThe father would hug the baby and hold him on his
) k7 M3 \& F: S$ Q" q) Gchest for a considerable period of time, causing sig-
& O7 |8 V: g x9 b' v, k8 r8 t. Unificant bare skin contact between baby and father.3 R) }: u3 K3 ?
The father also admitted that after the phone call,2 v! i1 z1 H0 u6 R9 u
when he learned the testosterone level in the baby
3 y' w2 |5 g: b, Q/ ~( N% \: H2 ^was high, he then read the product information
) d! s j7 b2 x' Q xpacket and concluded that it was most likely the rea-
# P$ L0 P7 O8 A0 }* bson for the child’s virilization. At that time, they3 ]/ x; b f5 V7 i% v+ Y1 K
decided to put the baby in a separate bed, and the
" C8 l2 q3 M5 ^3 N( Z X! Z- Ffather was not hugging him with bare skin and had
6 }6 m/ V8 m2 Qbeen using protective clothing. A repeat testosterone
$ V/ P/ _; L( L6 [test was ordered, but the family did not go to the
: X0 @0 [0 f4 N1 xlaboratory to obtain the test.
( ~- E' h7 q4 G5 t* I1 ?! cDiscussion
% b& z, }3 _4 j+ H" m% BPrecocious puberty in boys is defined as secondary1 r% @* R& p [& [1 H' V4 |2 p
sexual development before 9 years of age.1,4
) \) K9 ]7 l. @Precocious puberty is termed as central (true) when
2 i7 @% h" k3 g4 Y- Z' @it is caused by the premature activation of hypo-$ Z' |# o) K" M, f! K# ]( W& C
thalamic pituitary gonadal axis. CPP is more com-9 b7 D& F/ \% U5 i
mon in girls than in boys.1,3 Most boys with CPP) o0 q5 [2 g; j. b
may have a central nervous system lesion that is) n) d2 i" V1 \! I
responsible for the early activation of the hypothal-
, [" D7 Y \2 Q( N- {amic pituitary gonadal axis.1-3 Thus, greater empha-
6 _1 P0 L$ S* u M2 lsis has been given to neuroradiologic imaging in- j9 E$ ?4 X, G5 ~, [" v
boys with precocious puberty. In addition to viril-
; e _$ @4 ]+ c/ C, yization, the clinical hallmark of CPP is the symmet-
! t: p" `( b9 K" Srical testicular growth secondary to stimulation by; P/ J% Z u( c* k, s* w
gonadotropins.1,3) b0 R; Q# t d
Gonadotropin-independent peripheral preco-
' c$ _ o! r: G6 Qcious puberty in boys also results from inappropriate
; G. K! ^' `; Gandrogenic stimulation from either endogenous or. H( x P1 w1 j Q# F d
exogenous sources, nonpituitary gonadotropin stim-* U+ T5 p9 E# W* B% R
ulation, and rare activating mutations.3 Virilizing% T7 Y* h9 ~& j$ K& p' K
congenital adrenal hyperplasia producing excessive" b( N+ d! V9 a. v
adrenal androgens is a common cause of precocious9 {1 Y) @, q7 V; u
puberty in boys.3,4, {1 J# l1 l" h
The most common form of congenital adrenal& L9 J1 V F0 r5 T
hyperplasia is the 21-hydroxylase enzyme deficiency.
! _; }9 s; ^* h2 [2 Q8 iThe 11-β hydroxylase deficiency may also result in ^1 O4 a- V0 d5 x2 S# Z) o& y. r
excessive adrenal androgen production, and rarely,
$ P. {: N. S- ian adrenal tumor may also cause adrenal androgen
! P5 u& u ?9 k z. z* E/ G; nexcess.1,3% ], S2 {& S# E! y# M5 E; e
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from7 B/ P% l. E5 f$ K1 d
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
, v5 I: I7 j w" N: y8 O0 z4 c- [3 xA unique entity of male-limited gonadotropin-
{! [' R. s ?5 z) @. i. z. Rindependent precocious puberty, which is also known
' Y, P/ J( k/ f* {as testotoxicosis, may cause precocious puberty at a
8 U/ M! Y/ }/ i0 l% W$ ?very young age. The physical findings in these boys9 t6 ]" b u" `1 V$ T+ J
with this disorder are full pubertal development,
4 y9 L C2 l+ B Bincluding bilateral testicular growth, similar to boys
d# t- G0 Y( p% w; N2 v" kwith CPP. The gonadotropin levels in this disorder
9 A! J' s8 V m( n. m9 @2 b% g% _5 \are suppressed to prepubertal levels and do not show
' n* e/ D3 s- xpubertal response of gonadotropin after gonadotropin-
5 r, K- b8 @8 P% Creleasing hormone stimulation. This is a sex-linked& _8 N! Q1 g/ t5 x+ C1 y2 a
autosomal dominant disorder that affects only
\" l1 ^: K, emales; therefore, other male members of the family
- w- V& V+ U @' _# qmay have similar precocious puberty.3
/ p- F& ?5 e" p0 x8 B4 IIn our patient, physical examination was incon-9 t% j7 m, h1 R8 E% r/ ^
sistent with true precocious puberty since his testi-
u+ \: ~: J5 _3 |cles were prepubertal in size. However, testotoxicosis
. P( R' c) f! k" q3 ^% Gwas in the differential diagnosis because his father
# x2 @4 X8 v1 y- {# S+ Ystarted puberty somewhat early, and occasionally,
& @" B( {! X- n$ ?7 c" @testicular enlargement is not that evident in the- [, d& ~2 O9 z) c" z) d' [: c: w
beginning of this process.1 In the absence of a neg-9 ?* P% t$ A- Z; ?/ w- h
ative initial history of androgen exposure, our
- I. |) X3 M# \+ Obiggest concern was virilizing adrenal hyperplasia,, x5 W- p5 k: T& v* |
either 21-hydroxylase deficiency or 11-β hydroxylase
4 m2 |4 z8 o) G/ Ideficiency. Those diagnoses were excluded by find-
$ v) |2 e2 o: u9 n& T0 \" k6 k4 Ding the normal level of adrenal steroids.! h3 ?' s' e1 ]& s) k c
The diagnosis of exogenous androgens was strongly
- s4 m! x7 O4 F9 P' b( Asuspected in a follow-up visit after 4 months because0 ~% E; A$ K# u6 q- i- n* S
the physical examination revealed the complete disap-
) T; s* z8 I- r/ z2 L/ ppearance of pubic hair, normal growth velocity, and0 C& d) H) q- A/ p
decreased erections. The father admitted using a testos-
8 y; |5 x, w% O1 Z1 G, jterone gel, which he concealed at first visit. He was
0 u( d7 K; y, D: m3 b2 E" _using it rather frequently, twice a day. The Physicians’( Q. X7 h7 j( j8 S
Desk Reference, or package insert of this product, gel or
, v8 } p5 |$ J& e2 Lcream, cautions about dermal testosterone transfer to
) u4 i9 c$ c! |0 v9 G+ O- o" Tunprotected females through direct skin exposure.% A4 |5 ?1 X5 R1 Y$ X: N0 W
Serum testosterone level was found to be 2 times the3 }+ V" e8 b# A
baseline value in those females who were exposed to1 w1 S# i$ \# c! [# q; d, D+ w
even 15 minutes of direct skin contact with their male4 }! q3 n K0 G+ u! v
partners.6 However, when a shirt covered the applica-
7 D3 _8 q ?% G/ Dtion site, this testosterone transfer was prevented.
, y5 X4 ?' f$ S" i$ z8 EOur patient’s testosterone level was 60 ng/mL,# L+ r5 A x- @7 n
which was clearly high. Some studies suggest that
, l' r; I( [5 `% L3 w2 _3 g- Odermal conversion of testosterone to dihydrotestos-
# C8 p# d7 d, B5 u, Z1 j% l6 L% `3 o# tterone, which is a more potent metabolite, is more$ Y* G! D2 n( _3 g6 G) m
active in young children exposed to testosterone
! `; k5 e1 T9 r( y: S- O1 f: Yexogenously7; however, we did not measure a dihy-
- ^& L0 I* L4 Q4 h+ R) f, r- adrotestosterone level in our patient. In addition to( _2 s! |3 R; R6 [+ a
virilization, exposure to exogenous testosterone in G! i7 @7 a+ W9 ]# w- {1 L3 ]
children results in an increase in growth velocity and7 q5 M u- F* e+ R$ p* q
advanced bone age, as seen in our patient.
- W: X0 @* W% q) E# {+ @5 V* TThe long-term effect of androgen exposure during4 Z( g3 Z+ y% O7 T
early childhood on pubertal development and final' X, j' L B$ O, l* B; t% F
adult height are not fully known and always remain
- Z: U6 X: E8 ia concern. Children treated with short-term testos-& b; k2 I% |8 h1 |$ n1 G
terone injection or topical androgen may exhibit some
, M4 w! K7 Y( A3 ^+ m. Kacceleration of the skeletal maturation; however, after4 j. r; z! C% ~$ d- a" @
cessation of treatment, the rate of bone maturation7 ]/ R. Y, g3 Z* K. h4 Y6 d5 F6 k
decelerates and gradually returns to normal.8,9
5 H" _! Z! [8 t5 R: rThere are conflicting reports and controversy
3 L t$ k! C5 C0 D: jover the effect of early androgen exposure on adult
6 s9 S- E ^3 u; c/ U' p) w+ }penile length.10,11 Some reports suggest subnormal$ `; T/ o3 I! N' A6 K2 B
adult penile length, apparently because of downreg-
1 h1 q# \- z, }6 [/ T3 P& Q# ?ulation of androgen receptor number.10,12 However,( P8 j4 n3 z6 {( ~+ N- x. M( j
Sutherland et al13 did not find a correlation between' y0 J( p b: [4 K' m7 G
childhood testosterone exposure and reduced adult4 R4 N3 |/ K/ b' d' y8 ^+ N7 c
penile length in clinical studies.$ c, p! k, J5 M
Nonetheless, we do not believe our patient is
* C4 ~7 V0 ] k. Lgoing to experience any of the untoward effects from {7 R+ Y& T/ T3 u( I, V/ n
testosterone exposure as mentioned earlier because
# y3 U/ f9 G5 s- L) uthe exposure was not for a prolonged period of time.
) n9 v( N8 |5 M' q( b3 DAlthough the bone age was advanced at the time of
* G2 {$ @' |. o' e' H m" R6 Cdiagnosis, the child had a normal growth velocity at
. P: l( H2 B* C) \the follow-up visit. It is hoped that his final adult
- w3 ~/ g/ |1 l: c Q5 Oheight will not be affected.3 H; M5 o. _1 p8 S1 ~$ z
Although rarely reported, the widespread avail-2 N' s3 Y8 k5 n. x
ability of androgen products in our society may
6 G$ v: O8 V8 ~6 e# mindeed cause more virilization in male or female
- q% m& E- X: Q+ b l& @children than one would realize. Exposure to andro-
" P2 `+ D3 _' ]# ]% ~; W8 ygen products must be considered and specific ques-
2 L1 @0 j2 R) {6 s5 {tioning about the use of a testosterone product or+ F9 F$ I U$ U4 @- i
gel should be asked of the family members during6 d4 H8 I- w4 _/ h
the evaluation of any children who present with vir-
3 ^' q4 K( l. F1 e2 k* Oilization or peripheral precocious puberty. The diag-2 s X# u) `6 j: f) ^; E/ l1 R& u
nosis can be established by just a few tests and by; V1 ~2 }1 b* W, Y2 E% _, k; D
appropriate history. The inability to obtain such a$ W7 t6 q4 k* z1 U
history, or failure to ask the specific questions, may
4 Y/ Q& v4 S1 @' Nresult in extensive, unnecessary, and expensive
+ n1 o6 D. X7 B/ D" Ginvestigation. The primary care physician should be
4 j# X$ ]9 w$ `; ~aware of this fact, because most of these children5 | E; P( w: A" z
may initially present in their practice. The Physicians’
7 t/ V/ }& j$ `! b# ]Desk Reference and package insert should also put a$ A t4 o+ E+ V; ?: Z
warning about the virilizing effect on a male or
6 \( Y. E8 [) {3 o& @1 t5 c- Y; efemale child who might come in contact with some-7 h) v a! M+ X/ W
one using any of these products.
, O4 _! n# S" T2 q0 J9 EReferences
% G# y& z* v% u# b% T1 _1. Styne DM. The testes: disorder of sexual differentiation
, y3 v7 y H1 B- P0 q: Qand puberty in the male. In: Sperling MA, ed. Pediatric
* G9 y" c( }' i( n# BEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;" f9 r: C' E6 M5 e8 K7 w3 `
2002: 565-628.
$ \2 i, F9 d5 u' O8 d2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious' v6 ~2 \5 y0 I+ X7 n, A
puberty in children with tumours of the suprasellar pineal
- B! E9 G3 s' hat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
6 _" V" N0 e: l6 h! b& l' @- GTopical Testosterone Exposure / Bhowmick et al 543
; N/ W$ F8 J" T9 L, Zareas: organic central precocious puberty. Acta Paediatr.3 `4 z5 n9 v! j' J# S- I
2001;90:751-756.! Q4 q. c, {! i% l
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
I9 c1 E0 O4 X, Q) m* tPediatric Endocrinology. 4th ed. New York, NY: Marcel
- [# Y) h" X5 f' E3 b1 i/ RDekker Inc; 2003:211-238.
* U4 D$ K# J$ z/ [+ L$ y' j6 k4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual; d; Y) D! \' J6 J" X! [9 n
development in a two-year-old boy induced by topical
1 {5 {. J% \ M* Y4 jexposure to testosterone. Pediatrics. 1999;104:e23.
& l0 @" b& U" G8 u1 c6 n# G" ^2 e9 i5. Greulich WW, Pyle SI, eds. Radiographic Atlas of0 k5 R7 H; u: q; x1 a
Skeletal Development of the Hand and Wrist. 2nd ed.6 {7 `5 p+ u( Y- i& N* @9 x/ d+ y5 U% z
Stanford, CA: Stanford University Press; 1959.9 J5 K8 l! }3 T; N3 S' a) t
6. Physicians’ Desk Reference. Androgel 1% testosterone,* p6 L/ c7 a* Y4 ~. d
Unimed Pharmaceutical Inc. Montvale, NJ: Medical
) ~& n, \, x( c! j4 R1 j, V$ \; jEconomics Company, Inc; 2004:3239-3241.5 `" P5 l( m) m4 U* w8 g. i
7. Klugo RC, Cerny JC. Response of micropenis to topical9 }# K' [& [$ G" E5 k8 P. i
testosterone and gonadotropin. J Urol. 1978;119:
4 w; M% {, z" s& _! h+ f# y" y1 c667-668.
- b+ z" O" M$ g: D' b8. Guthrie RD, Smith DW, Graham CB. Testosterone9 D/ W/ m/ O$ r3 x1 |) r- }
treatment for micropenis during early childhood. J Pediatr.
1 t; ^' ?( Q+ w# [& t1973;83:247-252.
+ f# |) d( F2 D+ o& y5 L2 `% F9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone9 V$ w) i; x9 v7 Y2 z* i
therapy for penile growth. Urol. 1975;6:708-710. {1 m+ P5 `" |* c e0 [ X# b
10. Husmann DA, Cain MP. Microphallus: eventual phallic
+ b4 R* n7 D& Hsize is dependent on the timing of androgen administra-, A" `$ ^" g/ R+ b7 U* [
tion. J Urol. 1994;152:734-739./ e6 L( [; n7 Z
11. McMahon DR, Kramer SA, Husmann DA. Micropenis:' P7 v0 d) D5 Q' ]& q; ~
does early treatment with testosterone do more harm
3 o# m# F c1 [" n. \than good? J Urol. 1995;154:825-829.
& D9 P! A( k; ~" x12. Takane KK, George FW, Wilson JD. Androgen receptor4 W/ q: R9 m" c, t# n" t
of rat penis is down-regulated by androgen. Am J Physiol.+ @7 A$ O3 J! G( Y1 ]/ S I& V
1990;258:E46-E50.5 B, w% A0 E/ {0 V
13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect
8 H: k) t' W4 Q8 S2 nof prepubertal androgen exposure on adult penile2 ~ W3 ^. K/ p5 c4 [
length. J Urol. 1996;156:783-787. |
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