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is a significant concern for physicians. Central/ ] W+ {" T/ B8 n. b$ w. U
precocious puberty (CPP), which is mediated2 D5 v- w4 b6 I) b- L0 e( W& N e
through the hypothalamic pituitary gonadal axis, has2 V) ]' N) w, m$ C6 E
a higher incidence of organic central nervous system
& w0 k+ k4 G' n% B# D6 K1 Mlesions in boys.1,2 Virilization in boys, as manifested
1 i6 S6 ?1 c! p# qby enlargement of the penis, development of pubic/ l- Q4 N8 V# H* Y' B& N. w
hair, and facial acne without enlargement of testi-+ p0 F1 x6 ^6 }& U+ F0 Y& N l
cles, suggests peripheral or pseudopuberty.1-3 We
/ y, q# e1 ]/ E8 k" `report a 16-month-old boy who presented with the
7 @* K+ n' N7 ]; I) ^) Ienlargement of the phallus and pubic hair develop-
4 ^: y, e0 L0 n! E# ^' oment without testicular enlargement, which was due: f( U+ ?. l O' ]8 n9 u
to the unintentional exposure to androgen gel used by. M& |9 G" W" ]' O, U; i
the father. The family initially concealed this infor-
: Z( a' p+ Y/ ~8 l9 Omation, resulting in an extensive work-up for this' R3 r& V) H1 }: g! R% g
child. Given the widespread and easy availability of6 o9 R5 T1 b7 |$ c6 B& I' J
testosterone gel and cream, we believe this is proba-/ E/ B! g' z0 l% M2 c- q" S
bly more common than the rare case report in the
" u7 j( Z# x T8 n5 x; xliterature.4' [+ X2 _( P5 }. m
Patient Report! `6 ]. X+ W' Q7 Q- J, Y/ s/ d
A 16-month-old white child was referred to the
: i7 g" i, o& K& u/ fendocrine clinic by his pediatrician with the concern6 H, f/ N: c) a* s g: v
of early sexual development. His mother noticed
, } s9 Q, }( V& A v# V$ `light colored pubic hair development when he was
8 P3 Z" g/ {+ vFrom the 1Division of Pediatric Endocrinology, 2University of
1 V- G8 u- @6 l r; t' ZSouth Alabama Medical Center, Mobile, Alabama.9 q0 o5 B' Z# v5 {, X* `2 J
Address correspondence to: Samar K. Bhowmick, MD, FACE,
- _$ R3 n3 J3 d9 Q5 k5 o$ x \Professor of Pediatrics, University of South Alabama, College of
. M: E8 h; c7 LMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
4 x6 x# ^8 }5 s2 \6 Z) W: D7 m5 s6 ~1 je-mail: [email protected].* ?, M/ S" a1 ` Q
about 6 to 7 months old, which progressively became: q- v% T, P) _" Z/ U
darker. She was also concerned about the enlarge-7 [# g2 E8 ]! [* q
ment of his penis and frequent erections. The child7 d4 o$ e" B, _ o1 _* a8 ^+ G
was the product of a full-term normal delivery, with
: L' h- q! O3 j% E2 Ia birth weight of 7 lb 14 oz, and birth length of) U5 M/ }' c. W+ A% R
20 inches. He was breast-fed throughout the first year
& w0 A+ ^% z8 G& ~0 C$ pof life and was still receiving breast milk along with
# m' d; m7 \9 i! v6 msolid food. He had no hospitalizations or surgery,
3 h. g1 o9 y2 ~% r, qand his psychosocial and psychomotor development
, [8 O4 K* ^6 R& `9 awas age appropriate.
8 z$ G- @8 @) I/ ?1 `* `5 q7 fThe family history was remarkable for the father,& d$ |) @% p! w9 C d" ~: ~
who was diagnosed with hypothyroidism at age 16,
" p6 w1 |$ Q9 R) f0 ~which was treated with thyroxine. The father’s
8 T2 W8 F1 G- Z# p' _height was 6 feet, and he went through a somewhat3 a7 X% Z7 K `) O
early puberty and had stopped growing by age 14.
2 g1 X4 X8 K, u: c! ~5 _( sThe father denied taking any other medication. The
0 E, H" K: S. h3 z, V# `) [child’s mother was in good health. Her menarche
) z- K9 O9 _1 q: j" s" n# owas at 11 years of age, and her height was at 5 feet' o6 }. k( p9 h+ X, D, a
5 inches. There was no other family history of pre-4 X8 \8 O Z0 g) c" S
cocious sexual development in the first-degree rela-
% @7 W1 X( E$ ~& r8 ?) w$ `; t8 Btives. There were no siblings.+ L3 |# E& n& g) Q3 k
Physical Examination+ X& x, L7 q# s4 | ?
The physical examination revealed a very active,+ |& _$ M3 w" ?) X1 f& X& ~
playful, and healthy boy. The vital signs documented Y2 w& ^9 ?' E, A7 A
a blood pressure of 85/50 mm Hg, his length was4 U# y5 m @/ H0 W, i) Z) k2 P
90 cm (>97th percentile), and his weight was 14.4 kg- l7 F1 }5 g0 \+ ~2 [
(also >97th percentile). The observed yearly growth% u- S0 `* F2 l9 C
velocity was 30 cm (12 inches). The examination of
9 J: }; `# R6 Y* Q4 N; {+ Mthe neck revealed no thyroid enlargement.
9 x& }3 ^! @- | R" Y6 zThe genitourinary examination was remarkable for- ~ K" N. s/ T+ k) u! h+ R" ^
enlargement of the penis, with a stretched length of
1 ]5 Z* X- s3 r8 cm and a width of 2 cm. The glans penis was very well5 q+ b. p1 y$ I- I' I
developed. The pubic hair was Tanner II, mostly around
1 ?/ k, Q7 x; {% {540: c; U! q0 P! P9 y1 U
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
$ d. V* x4 y* Q! b# gthe base of the phallus and was dark and curled. The
! K# W+ L. Y" t2 o. W- {testicular volume was prepubertal at 2 mL each.
& u% Y/ |% J3 D; Y% sThe skin was moist and smooth and somewhat7 r0 v! q4 u$ c, z3 |! d0 K
oily. No axillary hair was noted. There were no
Z6 s6 a! s2 U4 C, r7 Sabnormal skin pigmentations or café-au-lait spots.7 m8 \4 h7 N' l$ V/ F: P: Q7 R
Neurologic evaluation showed deep tendon reflex 2+" y* h6 S6 B) ?' |2 u
bilateral and symmetrical. There was no suggestion+ @& D) {# d! v7 P, E, n8 C
of papilledema.# ~/ B6 ]9 w; Q2 ^1 ] o
Laboratory Evaluation
( B, l/ c* A3 F6 \! M4 d" y* A NThe bone age was consistent with 28 months by
+ F' [* V/ v4 T0 c1 q( o0 Ausing the standard of Greulich and Pyle at a chrono-
' R" F/ i) m# k& R; p0 O; e0 xlogic age of 16 months (advanced).5 Chromosomal6 D& \6 X" q1 M) g2 F& f9 H
karyotype was 46XY. The thyroid function test* ?) ~ N* Y7 a( M; h2 s2 K
showed a free T4 of 1.69 ng/dL, and thyroid stimu-
$ D' z% q) h: a9 I) y- I8 ?+ A' dlating hormone level was 1.3 µIU/mL (both normal).& C* z8 C5 {4 C& b/ q1 N, @
The concentrations of serum electrolytes, blood$ U0 g0 X5 w% I. [
urea nitrogen, creatinine, and calcium all were
# v3 e3 J& ?& x7 m- E7 q) qwithin normal range for his age. The concentration# }# D# v$ e, o+ q5 l, p
of serum 17-hydroxyprogesterone was 16 ng/dL x9 h9 K( g: G* L7 A2 ~8 A
(normal, 3 to 90 ng/dL), androstenedione was 20
1 W5 j, G! {4 Wng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
$ y, H+ i0 }, w5 @! y1 e5 [terone was 38 ng/dL (normal, 50 to 760 ng/dL),& H/ l: y0 B9 [9 B; `
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
, U& h4 e9 D* X, u; B49ng/dL), 11-desoxycortisol (specific compound S)( r* X3 t: `0 o( j& V2 S# B: V
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
+ j- {, R/ y( X- ~) X/ O) h5 ttisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total! d2 Q' p7 V# O
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),! t4 x) O# t3 S. ?' D
and β-human chorionic gonadotropin was less than
: j% J5 g0 R0 g( w3 z: V6 n: _5 mIU/mL (normal <5 mIU/mL). Serum follicular" ^5 n. ^5 q" J$ @8 L
stimulating hormone and leuteinizing hormone$ l/ e) _+ b' U5 L) n( r
concentrations were less than 0.05 mIU/mL
& t8 O( c B! u3 j: U( M) z X(prepubertal).6 Z4 \9 {) k l; I
The parents were notified about the laboratory- \" r8 H* |, T& N! n. i
results and were informed that all of the tests were, q/ B# U( E9 e C
normal except the testosterone level was high. The2 s) y4 y6 O5 v
follow-up visit was arranged within a few weeks to/ |6 k% }+ U( ^8 K0 S+ u" N2 N
obtain testicular and abdominal sonograms; how-8 |& o$ o3 P8 S
ever, the family did not return for 4 months.) M5 p' D. W* C9 W3 g# {
Physical examination at this time revealed that the% i/ t; S U. f4 k$ X! O
child had grown 2.5 cm in 4 months and had gained
; p5 F1 F; ]6 i7 h2 kg of weight. Physical examination remained' i' c* H6 l: w3 U& X& y7 A/ m
unchanged. Surprisingly, the pubic hair almost com-
& L2 Q, D- Y& X9 Fpletely disappeared except for a few vellous hairs at, i" K; ]/ a+ [ X
the base of the phallus. Testicular volume was still 2' {3 _: [4 S2 m5 T
mL, and the size of the penis remained unchanged.
; X z9 n/ p, [. z2 uThe mother also said that the boy was no longer hav-. Z: @. I6 J& X Z. _% R' D5 q, n
ing frequent erections.9 u! Y3 S8 q; c9 X5 C
Both parents were again questioned about use of* B1 o7 X, v9 U+ O" w0 H) x' I
any ointment/creams that they may have applied to) U4 J" F! [% l: Q `- U
the child’s skin. This time the father admitted the
( ~& f- E7 T* q* g. \6 ^: t2 `Topical Testosterone Exposure / Bhowmick et al 541
! j4 ^" g. {# W% y6 _* o3 ?( Zuse of testosterone gel twice daily that he was apply-2 Q2 H$ F! e, W0 d2 r* i9 R
ing over his own shoulders, chest, and back area for
8 u6 g0 }3 ]( c0 p5 La year. The father also revealed he was embarrassed8 g1 t( x! Y2 T% C% o: _ A
to disclose that he was using a testosterone gel pre-# l# O7 D" ~0 h0 l; V9 x
scribed by his family physician for decreased libido7 i c! w0 S m/ h$ t4 c( _% u
secondary to depression.
% d+ e' F1 o3 r8 e# h7 c" `The child slept in the same bed with parents.
) d8 `" S4 ]; E: Z+ ^$ ?& oThe father would hug the baby and hold him on his
5 R# O3 p9 J/ Q7 E( X) bchest for a considerable period of time, causing sig-
) c5 C9 l. C0 p2 I$ jnificant bare skin contact between baby and father.
/ n& g9 S) r$ i4 {The father also admitted that after the phone call,! x) l+ R9 S- Y/ N1 ?6 t0 D1 T, p* _
when he learned the testosterone level in the baby
$ m6 D! c d+ w( [) ]was high, he then read the product information( ^ |) M$ j6 N% t+ y
packet and concluded that it was most likely the rea-
& f1 }% U6 {% E( h2 mson for the child’s virilization. At that time, they6 d( e; ]& \; @1 `8 t7 U- S/ b
decided to put the baby in a separate bed, and the9 n1 _; }. w; y, Y
father was not hugging him with bare skin and had6 h9 j" s2 U0 j% E9 A
been using protective clothing. A repeat testosterone4 W$ K- J0 ^! S' ]
test was ordered, but the family did not go to the
% ?4 A) v n/ ^: F1 U3 |3 v; Qlaboratory to obtain the test.
: `3 h$ z$ _9 t: FDiscussion# E! J! I: t5 i% V" n2 \8 H! e U
Precocious puberty in boys is defined as secondary4 E- [: M2 o5 B/ w; G2 O
sexual development before 9 years of age.1,42 d0 z( p8 O/ Z) \
Precocious puberty is termed as central (true) when' S* f/ ]7 D! L2 S4 @0 X
it is caused by the premature activation of hypo-$ J; f, {5 o$ E8 \. e
thalamic pituitary gonadal axis. CPP is more com-3 F1 X$ r4 F' V+ b' D! J
mon in girls than in boys.1,3 Most boys with CPP
9 q! ^& [' D, n' j% h! kmay have a central nervous system lesion that is' u" H; f, R4 _# ~5 ^
responsible for the early activation of the hypothal-
3 y% O7 u5 { Namic pituitary gonadal axis.1-3 Thus, greater empha- j+ @- A. ~ K' s! ^8 ^4 S
sis has been given to neuroradiologic imaging in1 {7 n9 X0 i4 r: S" ]9 T e! t
boys with precocious puberty. In addition to viril-; M+ ?, i* ?1 R
ization, the clinical hallmark of CPP is the symmet-* ]2 ]' P, V2 X6 i3 |
rical testicular growth secondary to stimulation by
& X9 F( u l: p8 H! R. o( K; m0 ngonadotropins.1,3: y t/ r6 u; m7 ~' h
Gonadotropin-independent peripheral preco-
- g. v: Q5 ]0 |# J9 \cious puberty in boys also results from inappropriate
; L8 E5 u: b* Z9 Z* C) Tandrogenic stimulation from either endogenous or# r: I* ? J# m/ v: H
exogenous sources, nonpituitary gonadotropin stim-! D! k! y* J" j' O. Y6 o# _
ulation, and rare activating mutations.3 Virilizing6 u9 R/ F1 ^! F! Z0 W
congenital adrenal hyperplasia producing excessive5 u- c; A* a1 I1 h" q& z7 n1 ~
adrenal androgens is a common cause of precocious h, ?1 c6 t9 K( j
puberty in boys.3,4, J! h* `2 G2 G
The most common form of congenital adrenal: d) c6 s( R4 s
hyperplasia is the 21-hydroxylase enzyme deficiency.+ m" ]% T+ r" V% O& L
The 11-β hydroxylase deficiency may also result in Z- A, ?, j) S, b Y4 [
excessive adrenal androgen production, and rarely,- i. {9 d. C/ K. r6 T5 F0 |
an adrenal tumor may also cause adrenal androgen
1 M! A" ]. [; p# y: pexcess.1,31 _" {, x8 r. R) @) a# I! n
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from. o$ d" k# y6 ]
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007 `; v& q5 ?( y, j
A unique entity of male-limited gonadotropin-/ h( S; Z% Q1 R( g- a, m+ ]
independent precocious puberty, which is also known6 D$ T$ N( Z0 \5 M B' E) k5 v
as testotoxicosis, may cause precocious puberty at a
( a7 c) v* @$ l: `7 ?very young age. The physical findings in these boys$ Z5 l3 E5 _- Q3 v* `, t! {
with this disorder are full pubertal development,
/ Y1 {3 O! e. G4 Z1 U2 L% J, a4 _including bilateral testicular growth, similar to boys5 U0 \8 `+ _- i/ S9 A
with CPP. The gonadotropin levels in this disorder% c( `$ d; z8 J$ q' x- z
are suppressed to prepubertal levels and do not show" R+ |( S5 j* e O. L; a
pubertal response of gonadotropin after gonadotropin-# {3 C) f c/ e
releasing hormone stimulation. This is a sex-linked2 m' a% S3 m9 C$ `
autosomal dominant disorder that affects only
9 ^6 A. f+ U0 n* L4 J1 Wmales; therefore, other male members of the family* Z1 C+ W7 k6 p3 N
may have similar precocious puberty.3; Z! [1 ^3 w5 N. l9 T- i9 q; k/ j
In our patient, physical examination was incon-8 f$ \6 h' U. l2 Y, G: P
sistent with true precocious puberty since his testi-
0 r- ] U$ Y9 hcles were prepubertal in size. However, testotoxicosis: F6 \6 \* g. G
was in the differential diagnosis because his father
% x# _/ S2 Y) D3 X' Q* _8 \' gstarted puberty somewhat early, and occasionally,
# N( x" t7 U/ S3 T( k& c0 N+ x. ctesticular enlargement is not that evident in the" }& I3 ?9 s* o5 M4 s2 b1 C' M
beginning of this process.1 In the absence of a neg-2 j% Z& v3 x* |& m& m
ative initial history of androgen exposure, our
8 v6 T, R2 O3 O( Bbiggest concern was virilizing adrenal hyperplasia,9 g4 h1 ~$ D, v
either 21-hydroxylase deficiency or 11-β hydroxylase& u0 w% k* h) V- ^; S \3 P7 C' G
deficiency. Those diagnoses were excluded by find-
2 h) L' K: ?; t- Bing the normal level of adrenal steroids.# Q- V$ P6 v" }4 r8 M+ D( Q3 b/ L0 o
The diagnosis of exogenous androgens was strongly- b5 f5 u+ |* t+ c. O! T
suspected in a follow-up visit after 4 months because
+ u/ k8 k2 R8 h+ p/ c' e0 H& K- \the physical examination revealed the complete disap-4 B- I( y7 U2 e+ Y% h5 w
pearance of pubic hair, normal growth velocity, and4 V) ^0 e7 g U$ }' z: B
decreased erections. The father admitted using a testos-
/ @0 A i3 B1 e5 ^9 }2 Zterone gel, which he concealed at first visit. He was2 x" C" o4 Y: G, \6 D
using it rather frequently, twice a day. The Physicians’
$ B5 U; X* a3 E. iDesk Reference, or package insert of this product, gel or
" k; O3 r. U( P! m4 scream, cautions about dermal testosterone transfer to4 Z) U% O& Y, E
unprotected females through direct skin exposure.8 K6 l+ G& k3 c% `! T
Serum testosterone level was found to be 2 times the3 `, n- v9 J5 l* o! ^- a5 U1 E
baseline value in those females who were exposed to& \: a/ ^. U$ X) K
even 15 minutes of direct skin contact with their male# _1 @1 i$ ?2 A$ m
partners.6 However, when a shirt covered the applica-
% x4 |+ K* k0 l: ^# s- Stion site, this testosterone transfer was prevented.1 J& Z7 t6 o8 o
Our patient’s testosterone level was 60 ng/mL,- ~ Q) K& N: d# z, X
which was clearly high. Some studies suggest that
! Z& e! K4 J3 _4 v6 o4 `" o7 zdermal conversion of testosterone to dihydrotestos-
1 z) _: M5 v, k/ h- P4 {" Bterone, which is a more potent metabolite, is more/ r: w. }" q+ L' \. A
active in young children exposed to testosterone: T6 r9 [' W; F) {' m$ S
exogenously7; however, we did not measure a dihy-
" a( q: |+ x6 i6 s3 Xdrotestosterone level in our patient. In addition to0 _# ^5 A$ s) c
virilization, exposure to exogenous testosterone in
- b9 t5 U! e% F: D1 S% ^- c+ [ hchildren results in an increase in growth velocity and
7 W" ~7 s6 ~0 s) Z8 C6 G( ~advanced bone age, as seen in our patient.& r8 a0 W, T- G6 A$ | _
The long-term effect of androgen exposure during4 b$ t0 d: N3 B Z& X3 t$ O: D* i
early childhood on pubertal development and final
: \) W( J2 W- s- y7 ~+ G+ madult height are not fully known and always remain
$ l1 d0 g2 l ja concern. Children treated with short-term testos-$ m( K0 ?# s( M: A3 O8 \
terone injection or topical androgen may exhibit some
( ~% A7 m* x, t9 ~2 s0 bacceleration of the skeletal maturation; however, after5 f% `4 r) x$ }9 r7 z+ Y
cessation of treatment, the rate of bone maturation
. j( o! h, b8 A3 Sdecelerates and gradually returns to normal.8,9. g* d# B' ^) T8 z' ?4 H0 z- Y3 W5 ?
There are conflicting reports and controversy7 L5 N7 P' v: \$ `0 @9 z; C
over the effect of early androgen exposure on adult
$ W0 I0 N6 {0 A, `+ o; X' H. X& U3 jpenile length.10,11 Some reports suggest subnormal
6 N5 Y$ s6 _9 X% C2 f1 Uadult penile length, apparently because of downreg-1 Q$ c. t/ M' W' S2 f
ulation of androgen receptor number.10,12 However,
# V" U# _5 I9 B: HSutherland et al13 did not find a correlation between
. f) z: q1 @9 A& N& @2 Rchildhood testosterone exposure and reduced adult0 x, M4 O5 v0 A$ s& N
penile length in clinical studies.& P" M5 o0 Y5 s. Q# X; h7 C
Nonetheless, we do not believe our patient is8 G; y* c2 |: B
going to experience any of the untoward effects from
% O5 z7 |, \# T, l' }testosterone exposure as mentioned earlier because7 t$ f l2 n& q: J$ K. Q8 D6 `% z
the exposure was not for a prolonged period of time.
: @. P/ }3 G" y5 z$ LAlthough the bone age was advanced at the time of
$ T, Q, j8 i N6 ~2 A1 ]diagnosis, the child had a normal growth velocity at7 c V: @" f& j, X8 K& e& B; V
the follow-up visit. It is hoped that his final adult
' ~( Z3 t. u5 i1 n8 U# J! Theight will not be affected. j" |3 i" H1 U }
Although rarely reported, the widespread avail-
2 X* ]& v. ^- t6 f( {ability of androgen products in our society may
& w# _! d8 x# u+ v' U$ B; Bindeed cause more virilization in male or female
. a; g3 f/ }& Q# @+ D" Jchildren than one would realize. Exposure to andro-/ T! h# }0 H4 e6 g$ |
gen products must be considered and specific ques-
( E& k' r/ ?7 s2 m0 m8 P3 vtioning about the use of a testosterone product or
) o1 j3 [6 ^9 M4 \gel should be asked of the family members during
, h& m* k5 V+ g9 e! I# hthe evaluation of any children who present with vir-. B( m; O5 S' J. Q+ j$ v% `
ilization or peripheral precocious puberty. The diag-8 d4 q" x3 L6 X$ c$ v0 ~" u
nosis can be established by just a few tests and by' `9 c! }! X3 f* W; f) {7 @; f: h6 M
appropriate history. The inability to obtain such a. N* z4 o, t( R
history, or failure to ask the specific questions, may" p: m' C1 M+ _. H$ f5 N4 N" H/ i5 S
result in extensive, unnecessary, and expensive
' J! f; c; B/ `# W$ |7 Pinvestigation. The primary care physician should be' X( L: U6 V8 f
aware of this fact, because most of these children2 E) D0 y( ] W- w1 v% O2 l5 ^
may initially present in their practice. The Physicians’% M1 [( b1 P0 s* ~3 e- ]2 I
Desk Reference and package insert should also put a
" ~8 A' C% O2 z( d+ Cwarning about the virilizing effect on a male or
5 O3 u5 U$ x3 `female child who might come in contact with some-
0 b/ G% p6 X# }2 L* O" lone using any of these products.9 H' L0 T1 S4 w* A1 R) M" L
References
' _7 t( q$ S# D' S( w7 Q, A1. Styne DM. The testes: disorder of sexual differentiation5 K7 y0 L4 Q0 N, b7 D
and puberty in the male. In: Sperling MA, ed. Pediatric7 A, _8 \! f; \. b2 F/ m
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
3 y( [5 B! ?+ ]7 r" `; M) ^3 h2002: 565-628.6 c/ L0 C$ B: p- G% j
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious2 E& t" C. X8 B# x" G6 U
puberty in children with tumours of the suprasellar pineal) F$ N$ X; {& [9 A, c( W5 ^1 d
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from" ?/ T$ S+ N2 W5 Q% ?- ?% T
Topical Testosterone Exposure / Bhowmick et al 543
6 _& f1 z- H# ?' `% Q" C5 k2 @areas: organic central precocious puberty. Acta Paediatr.
, y3 ?3 `% M, l2001;90:751-756.
. {* q6 h4 M4 g4 b9 n. E3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
( [- V8 @' c$ o0 ~! B6 [3 mPediatric Endocrinology. 4th ed. New York, NY: Marcel
, ]- W0 ]/ e3 n# z$ K2 e( o% GDekker Inc; 2003:211-238.
# R- a8 Y9 |5 p! C4 V H( d4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual) B/ s$ E+ t, l2 Q* I( L
development in a two-year-old boy induced by topical% q/ e/ Z1 J! t' O; f8 t
exposure to testosterone. Pediatrics. 1999;104:e23.
v! \* e1 P8 p% W5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
! {) W4 E% a/ e. T8 d( L2 ISkeletal Development of the Hand and Wrist. 2nd ed.% g: R% A% O4 u0 ]) q& B( I9 p
Stanford, CA: Stanford University Press; 1959.
) y4 V+ @% z$ g3 I6. Physicians’ Desk Reference. Androgel 1% testosterone,
+ L7 U7 U" s# K% y7 P: d- _+ L' fUnimed Pharmaceutical Inc. Montvale, NJ: Medical5 c$ G: M1 b6 W8 p5 R+ A6 c
Economics Company, Inc; 2004:3239-3241.
. q1 f* t: B, i, a$ C7. Klugo RC, Cerny JC. Response of micropenis to topical+ K6 f' p; W8 v% t3 w# E& {
testosterone and gonadotropin. J Urol. 1978;119:
K# ]; I% ~5 |6 K8 }667-668.
- M, f- x; S* `! m8. Guthrie RD, Smith DW, Graham CB. Testosterone
+ I6 A3 p5 T5 ] rtreatment for micropenis during early childhood. J Pediatr. F" c# T( z( l
1973;83:247-252.
+ v* l8 z x: R; e S1 r1 r' _. A9. Jacobs SC, Kaplan GW, Gittes RF. Topical testosterone
$ R6 x0 I% ]# }! a' y# ktherapy for penile growth. Urol. 1975;6:708-710.1 k5 E9 N3 i+ Y
10. Husmann DA, Cain MP. Microphallus: eventual phallic
6 E4 f- Q. U9 m, g: Z# B/ w. zsize is dependent on the timing of androgen administra-! |: y4 a. S: `- d U9 P7 z5 O* b
tion. J Urol. 1994;152:734-739.1 w9 E9 J" j* R' Q' p
11. McMahon DR, Kramer SA, Husmann DA. Micropenis:
% s0 g; w0 a' W6 J- `7 Ndoes early treatment with testosterone do more harm
% k( o9 U& l" ~ Kthan good? J Urol. 1995;154:825-829.! [6 A0 F p6 u, \% l1 p2 t; G
12. Takane KK, George FW, Wilson JD. Androgen receptor4 t& N" T' k k; T7 B
of rat penis is down-regulated by androgen. Am J Physiol.
% n, p+ B: g% F, m# \. c) F1990;258:E46-E50.
. t4 v$ m0 f1 y2 H; M& a' a8 k" `5 ]13. Sutherland RS, Kogan BA, Baskin LS, et al. The effect
1 u2 ]2 u* m# Tof prepubertal androgen exposure on adult penile; L/ ~0 `) z3 N) o/ ~# g3 ^
length. J Urol. 1996;156:783-787. |
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