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is a significant concern for physicians. Central$ J. P1 P: q( }# B3 Q' _3 [
precocious puberty (CPP), which is mediated
$ M: |8 o/ k7 t. lthrough the hypothalamic pituitary gonadal axis, has
6 {& G/ M$ ]8 v* E+ |. {a higher incidence of organic central nervous system
# o% T, e! b; o4 ilesions in boys.1,2 Virilization in boys, as manifested9 H! a9 m6 W" \/ F' o
by enlargement of the penis, development of pubic% u7 j3 G+ w8 I8 a, U3 t- ?. u
hair, and facial acne without enlargement of testi-1 ?$ \1 ^' F0 \; Y5 ?/ G1 ~
cles, suggests peripheral or pseudopuberty.1-3 We8 ]7 g5 N) _. d3 E
report a 16-month-old boy who presented with the
# d6 K- {" p9 V( |) K( Benlargement of the phallus and pubic hair develop-
. |2 ?) v4 x- m8 c' `" dment without testicular enlargement, which was due
- K! G+ j4 V$ v' j$ wto the unintentional exposure to androgen gel used by
; ^# h/ ^+ M! o/ |" C$ p6 jthe father. The family initially concealed this infor-! r+ O/ b. L2 U
mation, resulting in an extensive work-up for this
3 y. E9 b3 V( v+ c6 Gchild. Given the widespread and easy availability of7 ]) j1 p' E9 g ]; {
testosterone gel and cream, we believe this is proba-
6 Z3 `" D8 Z8 @! mbly more common than the rare case report in the8 E8 O. y5 R2 `, k! B
literature.4
3 Q/ p& W, y. g6 S$ cPatient Report2 `2 w1 P2 w H
A 16-month-old white child was referred to the
# [# Q3 ~. X4 Kendocrine clinic by his pediatrician with the concern; X1 q0 K1 @. ^$ u7 }. [
of early sexual development. His mother noticed
" L6 K0 {1 ]' a$ G, Xlight colored pubic hair development when he was4 u3 Q' `& w# p3 s, `: v% x Y
From the 1Division of Pediatric Endocrinology, 2University of3 |) z( U, ?- [& V+ r5 Y3 M
South Alabama Medical Center, Mobile, Alabama.5 E" f& B( c3 P0 l9 |- k9 P/ @
Address correspondence to: Samar K. Bhowmick, MD, FACE,) S# a7 j* {5 X) k
Professor of Pediatrics, University of South Alabama, College of: d. {) e3 V6 ]- V
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
3 ~, c" b& x, b! }6 K$ pe-mail: [email protected].
3 e) @8 t% x0 \5 V9 O* f* e/ wabout 6 to 7 months old, which progressively became8 _9 M& n/ x, ^5 D9 E! T
darker. She was also concerned about the enlarge-
( y7 f+ D% }; S1 ~ P/ ument of his penis and frequent erections. The child2 d J' b1 O- \1 y& p
was the product of a full-term normal delivery, with
, [9 V* O' I7 X* Ta birth weight of 7 lb 14 oz, and birth length of
& \2 l1 o3 S8 x4 E% [( f) ]20 inches. He was breast-fed throughout the first year
( g; k" h: q! j' u$ K; e3 \% v. d" Gof life and was still receiving breast milk along with c* F, D% d5 Y* q
solid food. He had no hospitalizations or surgery,1 X& K+ |$ i0 t. U$ P
and his psychosocial and psychomotor development
! m3 X. G, J6 V+ B- lwas age appropriate.
/ c; i/ N3 U( Z% y X& q* C+ ?9 gThe family history was remarkable for the father,0 l) ?7 U5 k2 N
who was diagnosed with hypothyroidism at age 16,0 ]3 J' b/ z5 B3 p
which was treated with thyroxine. The father’s' h; s0 t8 U; [3 t- b& p
height was 6 feet, and he went through a somewhat
. T- Y. Z" J) L% p! @early puberty and had stopped growing by age 14.9 n; X" y* x2 c3 @, l
The father denied taking any other medication. The
" v, T/ z' d: ]% `: ]! W( \( fchild’s mother was in good health. Her menarche0 H( @. B3 G: n, K1 n( a; i
was at 11 years of age, and her height was at 5 feet6 j$ y2 A7 i8 w3 {0 N) Q& w! X
5 inches. There was no other family history of pre-9 y- Z6 X1 O- A& V# M7 s" O/ w
cocious sexual development in the first-degree rela-$ P0 Y# ], Z Q* E2 N: N% U
tives. There were no siblings.
; N( Q6 R4 |9 ~' JPhysical Examination. {1 n8 G2 V$ k
The physical examination revealed a very active,8 L2 C1 X: I" ]" G, t# O
playful, and healthy boy. The vital signs documented2 e" L2 P. v# q4 R' z1 K7 Q
a blood pressure of 85/50 mm Hg, his length was: _& z7 T } }& `' C9 }' W
90 cm (>97th percentile), and his weight was 14.4 kg4 r! v8 }: s$ ~6 d a% n
(also >97th percentile). The observed yearly growth$ I7 d4 \, |& G* {5 S5 W% |
velocity was 30 cm (12 inches). The examination of0 q( J' s! }& r: h& V9 i& f
the neck revealed no thyroid enlargement.
8 Q6 m. f5 a( t3 G' D" Z# |The genitourinary examination was remarkable for8 I# [6 B" K, R7 I( W' o/ H6 u* c
enlargement of the penis, with a stretched length of
$ v1 q0 I8 B9 X' s8 cm and a width of 2 cm. The glans penis was very well
! b" o- B* f% s1 j- c+ }1 `1 Kdeveloped. The pubic hair was Tanner II, mostly around
" k; S9 q: f% d h' m6 H/ n540) b( k: z. N* V6 D
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
( {1 ?& v$ f. B# O2 U% `; ithe base of the phallus and was dark and curled. The3 n' H5 p; ?& K
testicular volume was prepubertal at 2 mL each.! B7 K) X) {0 h) T- w8 F& g% s
The skin was moist and smooth and somewhat9 F8 ~* ?3 Z, P1 K. m
oily. No axillary hair was noted. There were no' D6 A# [# j! y+ f/ o
abnormal skin pigmentations or café-au-lait spots. z) f) c+ b( V2 L# ~" W
Neurologic evaluation showed deep tendon reflex 2+
5 Q E5 u- h3 S! U, o% @bilateral and symmetrical. There was no suggestion
# j9 }8 r# _$ Zof papilledema.2 T7 ]% g7 {4 z3 P5 t) e
Laboratory Evaluation' ?; V3 ]. F# R- f7 Z
The bone age was consistent with 28 months by% X* [, {0 U% {4 n& Q( a
using the standard of Greulich and Pyle at a chrono-
6 [8 S/ N( p' C5 V- Ologic age of 16 months (advanced).5 Chromosomal
: U% P' Q9 z2 a3 l7 m8 n( pkaryotype was 46XY. The thyroid function test
! R, }$ S+ L% H8 j4 I8 J i; Fshowed a free T4 of 1.69 ng/dL, and thyroid stimu-. ~9 u( Y) A. W
lating hormone level was 1.3 µIU/mL (both normal).1 z( s$ X1 S+ O9 y4 Z
The concentrations of serum electrolytes, blood: B# ^& Z. k6 q
urea nitrogen, creatinine, and calcium all were
- A9 ]1 M( u- C& O/ Xwithin normal range for his age. The concentration- ]0 p+ {, M$ w3 p
of serum 17-hydroxyprogesterone was 16 ng/dL
3 e5 p$ e( w: A. p(normal, 3 to 90 ng/dL), androstenedione was 20
) o' [0 Q1 J5 h8 g6 Gng/dL (normal, 18 to 80 ng/dL), dehydroepiandros- `& h) `3 `/ D" Y
terone was 38 ng/dL (normal, 50 to 760 ng/dL),; t( @+ }5 y3 Q3 F1 N! @
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
( i" ]7 m$ J- R5 v( A: q% w8 A49ng/dL), 11-desoxycortisol (specific compound S)( r( {. c. P3 [8 d0 X, J$ N/ b, L
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
, c: X! X D6 a4 t9 o L6 A) i# Ytisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
/ I5 ~7 I9 u9 e8 g. U) G0 U% U2 `testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
/ r; I- R7 P& Y' p" R( Q- pand β-human chorionic gonadotropin was less than
! Q7 O9 Q3 u/ R! R9 B$ D5 mIU/mL (normal <5 mIU/mL). Serum follicular
: w/ U/ @) R! s, B$ Bstimulating hormone and leuteinizing hormone' e, f% C; K, T7 M
concentrations were less than 0.05 mIU/mL
3 q' [# D& T/ M# G6 F1 K8 j(prepubertal).2 |# [& v- V. T# Z4 L* a
The parents were notified about the laboratory' m+ E6 _, K S( ?$ K* e
results and were informed that all of the tests were: \# s7 V3 Z4 l" z% ?/ T
normal except the testosterone level was high. The
& T' o o5 z6 ~$ o5 mfollow-up visit was arranged within a few weeks to
1 ]( V2 W' \/ x; j7 [3 M5 y# dobtain testicular and abdominal sonograms; how-" P- V9 b2 L+ m0 w+ h8 ?$ t4 M0 \
ever, the family did not return for 4 months.# p4 x5 k: o' V- Q$ D4 B
Physical examination at this time revealed that the
# T" s' q. p& |. O# ~+ ]: B; Pchild had grown 2.5 cm in 4 months and had gained
. {. R5 e" A5 X3 u2 kg of weight. Physical examination remained
, z1 `, W* o+ t( Lunchanged. Surprisingly, the pubic hair almost com-8 ?. ]: A8 i1 I
pletely disappeared except for a few vellous hairs at, i) D$ h1 A( P/ w' n* [
the base of the phallus. Testicular volume was still 2: P& {( }& M$ F) r4 D
mL, and the size of the penis remained unchanged.
' V4 {3 z' u. |The mother also said that the boy was no longer hav-, B% V* O2 _0 N! T. P. \( w8 Q
ing frequent erections.
' B' {/ a2 @# z5 } C8 b9 E/ lBoth parents were again questioned about use of" {) e7 H, Z" Y S/ N1 K6 ?
any ointment/creams that they may have applied to
: m) g/ \, s' q4 Y2 R8 q1 M' J7 Zthe child’s skin. This time the father admitted the% n! X/ F2 K! r
Topical Testosterone Exposure / Bhowmick et al 541- p$ i0 U/ k" X% B/ R0 n! [
use of testosterone gel twice daily that he was apply-
( [; ]# K" y! X3 u3 p3 a" ving over his own shoulders, chest, and back area for" Y2 ]2 A; |. }0 G& |
a year. The father also revealed he was embarrassed; x2 }- y' {, I* T3 x+ I2 `
to disclose that he was using a testosterone gel pre-/ z6 m9 m( R+ X% z
scribed by his family physician for decreased libido5 o8 b& l* Y: A$ D9 V3 c' ^
secondary to depression.0 O7 ?+ k+ P) ?
The child slept in the same bed with parents.
( O' ?: z7 T0 W. U9 y& ^' ]The father would hug the baby and hold him on his
v, p3 v* b. h- f) schest for a considerable period of time, causing sig-
8 @/ H4 J0 g8 R, _0 w' tnificant bare skin contact between baby and father.! G7 R! |/ W0 U, `- m: T
The father also admitted that after the phone call,& X3 N' Y, {9 I: s4 R$ [ g8 z
when he learned the testosterone level in the baby
! a" [0 Y4 `6 |! H! V m: w+ Dwas high, he then read the product information
5 ~( ~" L3 r2 U) Y6 G. t2 H7 k& vpacket and concluded that it was most likely the rea-
' \/ b+ i" z4 P1 ]* f/ ^1 Cson for the child’s virilization. At that time, they+ W( f7 G) r) b0 R. S
decided to put the baby in a separate bed, and the! l: i( ]8 Y, c* T, N
father was not hugging him with bare skin and had
4 B4 R) p0 Q ~8 @. nbeen using protective clothing. A repeat testosterone5 V8 @- t) a2 ^6 i7 e
test was ordered, but the family did not go to the
* u9 v5 }0 m. n" g6 H3 Flaboratory to obtain the test.
3 l$ N/ i$ D- R" T5 S* B* o- B; pDiscussion
0 k0 e5 m \* q. Z& ?& r% h: RPrecocious puberty in boys is defined as secondary
3 `' \& b& m9 U0 {sexual development before 9 years of age.1,4
1 @9 M; l5 Q5 ^/ _& u ^Precocious puberty is termed as central (true) when/ I |( m8 a/ M8 J
it is caused by the premature activation of hypo-
0 q5 ~, [* k0 C" |6 F' Hthalamic pituitary gonadal axis. CPP is more com-3 Q* j# V! ~1 o' u( {
mon in girls than in boys.1,3 Most boys with CPP8 j- A$ o5 o. F% M
may have a central nervous system lesion that is
8 w1 c5 _- w1 o: {) b0 I. bresponsible for the early activation of the hypothal-
: g2 W. |$ j, J& B1 v* y m- oamic pituitary gonadal axis.1-3 Thus, greater empha-
" A3 t( s2 T- \' D6 Zsis has been given to neuroradiologic imaging in# q/ ^# a# k" N' V# {+ `; s
boys with precocious puberty. In addition to viril-
8 T* r2 d/ `' G5 d9 i8 E. Z8 P% b" kization, the clinical hallmark of CPP is the symmet-
7 U) P" W& Z1 E% L8 Drical testicular growth secondary to stimulation by
8 ~9 ?' t5 p+ ~/ o) @% _' c6 tgonadotropins.1,3
" h ], [( ]6 G: ?! n! E' } TGonadotropin-independent peripheral preco-% ? x6 ~1 {/ {# b% u$ Q% o
cious puberty in boys also results from inappropriate7 T& g- F7 d# Q5 `
androgenic stimulation from either endogenous or+ h9 ~- V3 U8 C: @
exogenous sources, nonpituitary gonadotropin stim-8 h! W, W. _' V) V, j* {2 b
ulation, and rare activating mutations.3 Virilizing
% Z0 c$ G. a. e" E" p$ z& Dcongenital adrenal hyperplasia producing excessive
( ~: O3 b" b" {6 I% w( a7 ^adrenal androgens is a common cause of precocious! m" J! G: P# d+ j/ N
puberty in boys.3,47 f, F; j# q# b
The most common form of congenital adrenal
: L" h( Z- X3 Z1 S7 mhyperplasia is the 21-hydroxylase enzyme deficiency.
6 E7 Q; P" Y4 CThe 11-β hydroxylase deficiency may also result in
O' [9 G. C- M, Z9 Jexcessive adrenal androgen production, and rarely,
% D% ~3 R+ s! J4 Zan adrenal tumor may also cause adrenal androgen. T* ?' E% `8 t: m3 H* i
excess.1,3
* `2 d" E; A# kat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from) z+ {# ]% H+ i6 c5 S7 z
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007! ]. ?& R( b8 f
A unique entity of male-limited gonadotropin-
; S O+ a' n. A7 H4 windependent precocious puberty, which is also known
$ x( y6 l X: q+ ras testotoxicosis, may cause precocious puberty at a
" A+ D6 m% I5 o/ Nvery young age. The physical findings in these boys
7 C. H9 [' s8 ~6 g/ w- Owith this disorder are full pubertal development,
- D! [3 m8 V1 ?3 Y( Q0 m3 {+ Vincluding bilateral testicular growth, similar to boys7 H; }, ~9 _( S; J8 |9 M
with CPP. The gonadotropin levels in this disorder
3 h2 {, i0 l* }4 j& I: zare suppressed to prepubertal levels and do not show
: J9 Q. w9 o3 e" u6 R- Epubertal response of gonadotropin after gonadotropin-3 _0 S6 c5 N# j Q4 Q5 X
releasing hormone stimulation. This is a sex-linked9 Z( A; s; Q( Y5 x6 i" U: I
autosomal dominant disorder that affects only- Y, x2 r Q4 J$ [+ p; b, u) u
males; therefore, other male members of the family! P7 n# J% s' Q: \3 q) w7 ?
may have similar precocious puberty.3& m8 M* b- o4 F: Q
In our patient, physical examination was incon-
* ?* e1 j, ]' ^, _, }/ k7 V& Nsistent with true precocious puberty since his testi-: L+ s) n" Q( @* _! ^& o4 b" M
cles were prepubertal in size. However, testotoxicosis% U7 y% s( m: m! h' p. n. |6 D
was in the differential diagnosis because his father0 L1 a' G% t' o; s, ^1 Y9 o# K0 {
started puberty somewhat early, and occasionally,4 P6 Y" |/ ~) t' d
testicular enlargement is not that evident in the
7 D& X; ]6 A# Z' e8 cbeginning of this process.1 In the absence of a neg-
( z" Z+ D. p( w" T& z7 Sative initial history of androgen exposure, our7 x" C3 g J% v N% g
biggest concern was virilizing adrenal hyperplasia, Y# `2 c8 N! y( }
either 21-hydroxylase deficiency or 11-β hydroxylase2 N1 F9 t& B6 p5 n" g+ V1 T9 p
deficiency. Those diagnoses were excluded by find-
8 F) G. u# C+ F& l4 ging the normal level of adrenal steroids.
2 b+ C; S- w# [5 K U8 IThe diagnosis of exogenous androgens was strongly
. \8 M% D5 \4 Nsuspected in a follow-up visit after 4 months because
* X, s$ p' n$ e7 Y Fthe physical examination revealed the complete disap-
& |% A; o0 N5 j( {pearance of pubic hair, normal growth velocity, and+ K. H3 _: q1 |* t8 a) A e
decreased erections. The father admitted using a testos-
% I8 g, |8 o9 ]& q& d! y' Eterone gel, which he concealed at first visit. He was4 R8 Z/ E" x* ~2 k# P
using it rather frequently, twice a day. The Physicians’
6 u3 m4 ]9 @! B# A n" a, U6 mDesk Reference, or package insert of this product, gel or
* P2 U& M1 g7 H) F! p% t% V8 qcream, cautions about dermal testosterone transfer to3 E$ E' Q8 u8 i% \/ I X/ b3 e
unprotected females through direct skin exposure.+ N* u; }( a9 C2 _- B1 O' Q! {
Serum testosterone level was found to be 2 times the
6 W" J. G# T; w' a+ ~baseline value in those females who were exposed to
1 K. _$ x' S1 M' u0 @even 15 minutes of direct skin contact with their male# U" ]$ w0 Q3 ?$ v
partners.6 However, when a shirt covered the applica-
# W9 y% @, h. m# _0 Z' M! u2 Btion site, this testosterone transfer was prevented.0 m; } S* x7 c7 u! E: e* l
Our patient’s testosterone level was 60 ng/mL,; _% D! f7 r. Y4 K( l# L3 A
which was clearly high. Some studies suggest that3 \6 V0 S7 p- d5 U: n3 I: Q2 w
dermal conversion of testosterone to dihydrotestos-- |& H" B2 K( v J; T3 ]
terone, which is a more potent metabolite, is more# _% N% F; S# P
active in young children exposed to testosterone
5 J, {+ p5 [0 F+ U1 ^ f- K( `4 texogenously7; however, we did not measure a dihy-
3 k4 Y4 y3 T/ u( h( R2 Qdrotestosterone level in our patient. In addition to
% T* X9 |& ~3 m$ I8 K1 T4 cvirilization, exposure to exogenous testosterone in
( U; @2 H, X: t4 R7 `6 Rchildren results in an increase in growth velocity and
' u: Q% \" B3 wadvanced bone age, as seen in our patient.
3 _" r- w' q4 D: w9 K; N v; tThe long-term effect of androgen exposure during
# f7 k5 h; F2 h! eearly childhood on pubertal development and final. e4 _9 t, `; P" _ L p) M
adult height are not fully known and always remain
2 n/ Q: a0 a, c8 Da concern. Children treated with short-term testos-
F: @( a' D* ^9 L9 c9 Z/ Nterone injection or topical androgen may exhibit some
& D& s* R* y% l$ g& B/ Nacceleration of the skeletal maturation; however, after
7 x) g/ R7 Z+ k8 r( n: Lcessation of treatment, the rate of bone maturation$ k% U6 g2 G) s& i# s3 C
decelerates and gradually returns to normal.8,9
U+ ~% ~% f7 J7 vThere are conflicting reports and controversy
/ B$ M X# Z$ ?' R# u4 y# C, sover the effect of early androgen exposure on adult$ B; [* R7 V+ v+ C% Q) B3 j" M7 m$ U1 i
penile length.10,11 Some reports suggest subnormal9 ?3 N6 t& g( \7 D* S6 V: V
adult penile length, apparently because of downreg-
1 f) s4 Q z* ~! Lulation of androgen receptor number.10,12 However,2 X. z: W, Q5 n- J& o4 e7 X' b
Sutherland et al13 did not find a correlation between
' d5 E2 b4 m! X" T. G2 gchildhood testosterone exposure and reduced adult# b& h, O/ }( Q2 z2 F' m
penile length in clinical studies.2 f# D% Q0 S, ]) R0 n4 S% L9 ^1 ^
Nonetheless, we do not believe our patient is
/ K& q" i4 m/ j4 Xgoing to experience any of the untoward effects from% A D1 J* k0 y
testosterone exposure as mentioned earlier because
# G% y+ X$ B1 |' Cthe exposure was not for a prolonged period of time.
6 x/ C$ N) |6 h" fAlthough the bone age was advanced at the time of! d8 x# D/ E9 W/ M. Y/ a# s
diagnosis, the child had a normal growth velocity at4 i% Y7 l' N. j1 `8 p& ?! [
the follow-up visit. It is hoped that his final adult8 y$ X0 d& H4 _) e" `5 V) K, o
height will not be affected.
- Y: v. ~- W" d' |- Y5 lAlthough rarely reported, the widespread avail-
7 `! c$ v v. g1 W7 {+ j) W, R' z0 Aability of androgen products in our society may
* }$ _: ?6 }3 g0 {% D' ^9 h5 ^indeed cause more virilization in male or female s( I- G$ M% s# |8 |% q
children than one would realize. Exposure to andro-) v( [- C% [6 q/ j3 O0 l
gen products must be considered and specific ques-
" X% g8 O Y5 M) }( j% d( Vtioning about the use of a testosterone product or
$ _: v" p0 V) K% t1 U) a3 F; ?gel should be asked of the family members during
/ i3 B) x6 Y" e6 @9 Wthe evaluation of any children who present with vir-
- C3 @7 [9 H+ Y9 V7 qilization or peripheral precocious puberty. The diag-) @, m3 C6 T! R0 `' R" L% _' }) K
nosis can be established by just a few tests and by: p4 {' C3 }* ^- {4 q* V" b
appropriate history. The inability to obtain such a
& b3 W! {8 U6 v0 D+ @4 dhistory, or failure to ask the specific questions, may, ~2 k6 w9 s: Q8 \
result in extensive, unnecessary, and expensive
& |' f8 R% I% Q* F4 v$ b' w) finvestigation. The primary care physician should be+ F/ p B5 w4 j" b% s
aware of this fact, because most of these children
9 q. K9 M) w- O- t, D. dmay initially present in their practice. The Physicians’0 O0 X3 L* x' o
Desk Reference and package insert should also put a; n, a) z3 y" y$ u! j- @ q
warning about the virilizing effect on a male or
# T/ h1 x/ V# B$ O1 {female child who might come in contact with some-5 O3 i4 x3 G$ e7 D# Q8 D. @# T. B9 k
one using any of these products.
( |; r& ^' T; [" C+ N4 _References
, p" ?7 N6 b6 k5 R( \1. Styne DM. The testes: disorder of sexual differentiation
- H) t U: d9 n9 S1 Iand puberty in the male. In: Sperling MA, ed. Pediatric8 Q8 a# G( X' E$ T/ c
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
6 D& s. D' F& N6 [2002: 565-628.
; T+ [* |+ p L4 W8 U' R4 o2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious9 T, m; t- T6 m; K {
puberty in children with tumours of the suprasellar pineal9 p& j& Z( t5 }( Y
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
4 h0 Y) A. }- s, U1 nTopical Testosterone Exposure / Bhowmick et al 543
- ]3 n6 m/ \* E# F2 V5 j$ Careas: organic central precocious puberty. Acta Paediatr.
) j$ c: D6 J5 ^/ c2001;90:751-756.
" r5 X# u% O# C4 r- X0 g3 p% T a3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.+ ^! p) g# M3 X; H# {4 j2 g
Pediatric Endocrinology. 4th ed. New York, NY: Marcel
8 ^; e1 F# f9 a4 ]0 I2 v. dDekker Inc; 2003:211-238.
- i; |0 m/ r0 J" X; v: j4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual0 V k) K! ^- N6 H9 }, D
development in a two-year-old boy induced by topical
2 k: G( @" E+ O, V# V8 vexposure to testosterone. Pediatrics. 1999;104:e23.. {4 V. P- E2 a9 H# N6 t
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of& t/ V) l6 D7 K
Skeletal Development of the Hand and Wrist. 2nd ed.
2 o8 `( I# Q, H. CStanford, CA: Stanford University Press; 1959.# h/ A4 ?& K7 ]5 a
6. Physicians’ Desk Reference. Androgel 1% testosterone,
) ]( W( |" p0 O' ]Unimed Pharmaceutical Inc. Montvale, NJ: Medical
4 I8 f% B3 d1 |: g( LEconomics Company, Inc; 2004:3239-3241.
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