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is a significant concern for physicians. Central- p. T. a7 v5 E0 G0 X0 {
precocious puberty (CPP), which is mediated
( m, |5 {9 D& G& p8 Z5 Cthrough the hypothalamic pituitary gonadal axis, has
3 @( z7 ~, O2 z9 r$ J2 M5 |5 Oa higher incidence of organic central nervous system9 P1 o& p5 k6 n3 _( C
lesions in boys.1,2 Virilization in boys, as manifested
# O' D# U- ~, a* O" c# ?9 jby enlargement of the penis, development of pubic5 @4 h" A' o* o, @( C
hair, and facial acne without enlargement of testi-
& P2 y& @# G1 q8 T. W# W9 ecles, suggests peripheral or pseudopuberty.1-3 We
6 D( j- n9 ^ Q' W( o* areport a 16-month-old boy who presented with the# D0 @ D. f( |2 K4 z9 A* L$ {
enlargement of the phallus and pubic hair develop-' V0 L1 z. Q' @; F. I
ment without testicular enlargement, which was due
& l0 c, r& U4 ^* Jto the unintentional exposure to androgen gel used by
+ m S- y# A/ sthe father. The family initially concealed this infor-+ a, {4 i+ `4 K' _6 X& ^. ]0 `
mation, resulting in an extensive work-up for this
& h$ ^- Y' Q; `9 t8 y: vchild. Given the widespread and easy availability of8 s; I) [5 h% K! \( S
testosterone gel and cream, we believe this is proba-/ y8 C7 ?3 T, L% I! m3 m
bly more common than the rare case report in the
) F+ Y; A+ V% W5 I& _! S& ]literature.4
) {9 w6 |8 D6 x( Y+ B/ f( F) HPatient Report3 e w5 b! w. t# B" P
A 16-month-old white child was referred to the
1 M$ a% f( |: M7 N& Nendocrine clinic by his pediatrician with the concern/ b: J' E5 {: t2 S4 G9 V
of early sexual development. His mother noticed
1 m2 R7 ]7 c. clight colored pubic hair development when he was7 z5 c# h# \; a# Z3 J
From the 1Division of Pediatric Endocrinology, 2University of
8 V; p, L3 a% E w% [3 {South Alabama Medical Center, Mobile, Alabama.4 U7 [, F# ^+ q7 q% }- {+ A! b+ p
Address correspondence to: Samar K. Bhowmick, MD, FACE,3 d" k5 e2 C2 o% R
Professor of Pediatrics, University of South Alabama, College of
% S, k |$ E& J: T; u/ e# y$ [1 A- ?Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;9 ~5 ]7 g& i- C/ U
e-mail: [email protected].( H: D4 [8 J: n) V/ `6 N
about 6 to 7 months old, which progressively became: V8 J% @# ]1 {' b! {- N
darker. She was also concerned about the enlarge-
9 V4 ^7 k/ {2 f1 |4 b+ q0 jment of his penis and frequent erections. The child
8 f; u/ S* x8 q# s: y3 ywas the product of a full-term normal delivery, with
# H" Q. x5 ]2 `a birth weight of 7 lb 14 oz, and birth length of
6 P! J: o3 J: ~0 ]$ w9 a20 inches. He was breast-fed throughout the first year
- x4 I, |' w- |/ V3 G+ ]4 b4 Y1 kof life and was still receiving breast milk along with
6 d7 q6 |$ s' {1 E& C7 \2 C, Ssolid food. He had no hospitalizations or surgery,$ g: @* k/ |( _5 [5 [+ g# s
and his psychosocial and psychomotor development; `+ C1 L+ q: }! q7 G* L* q
was age appropriate.
; j' C. K* r9 {3 J0 L5 E9 }5 c- tThe family history was remarkable for the father,! \" O$ q' [% v- X2 M$ {
who was diagnosed with hypothyroidism at age 16,9 | K r3 I% Q" H o) ]/ X, G/ m
which was treated with thyroxine. The father’s2 x! M. Q+ W9 F9 y# n7 \$ B
height was 6 feet, and he went through a somewhat
3 r- a& N9 V* y! W. S3 G3 f# fearly puberty and had stopped growing by age 14.* s5 q9 N7 [) I) F. |- a: ^
The father denied taking any other medication. The& X, @* }4 Y: c# O) w* [
child’s mother was in good health. Her menarche
6 f l8 z( x& r% ~8 \; Owas at 11 years of age, and her height was at 5 feet
% l' o! }( n+ x5 inches. There was no other family history of pre-( X& ?. \+ E1 p2 s6 h, q" y. G+ B( P
cocious sexual development in the first-degree rela-
6 O$ X. x0 W- R. ?: D* E! u8 \# Gtives. There were no siblings.
5 c- u4 I1 n) |$ T- yPhysical Examination7 S0 K8 M; w8 R6 L9 a& E
The physical examination revealed a very active,
1 ]! H. ]9 D. S6 b% U1 M; ~8 ]. lplayful, and healthy boy. The vital signs documented
) i5 A, J- X, n! }7 V' Xa blood pressure of 85/50 mm Hg, his length was4 G( O8 I. F9 J0 ?! M5 n, y1 u, j
90 cm (>97th percentile), and his weight was 14.4 kg
T/ F/ e4 o- d" O1 Q* G* s(also >97th percentile). The observed yearly growth
$ B0 y1 V/ @5 a5 e# Cvelocity was 30 cm (12 inches). The examination of
& F: T/ P7 D+ U$ @+ f/ Y9 sthe neck revealed no thyroid enlargement.
3 }4 a, h ] QThe genitourinary examination was remarkable for& {1 d& ?- R: S& M% _
enlargement of the penis, with a stretched length of+ D4 q" P1 A% ]
8 cm and a width of 2 cm. The glans penis was very well. `- F D1 B# u4 y
developed. The pubic hair was Tanner II, mostly around( o) N* C1 L- Q5 F
540
0 a, ^$ t! l; ]5 o8 R* Fat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from* ~/ v, C9 [( i9 r P n( G
the base of the phallus and was dark and curled. The
5 z7 z1 X) u( V0 r0 w0 E! Dtesticular volume was prepubertal at 2 mL each.
( X0 Y2 R9 F, X5 rThe skin was moist and smooth and somewhat- ]7 W+ v2 G. M" L4 l
oily. No axillary hair was noted. There were no
" Y* b$ }) f0 `9 i# d: J* nabnormal skin pigmentations or café-au-lait spots.
9 V' v7 D; a1 Q2 f( lNeurologic evaluation showed deep tendon reflex 2+
4 ?- L8 s6 Y; R$ _7 ?9 qbilateral and symmetrical. There was no suggestion
3 |# G6 U3 @+ b# @+ hof papilledema.
7 t7 z) l8 U. O3 _Laboratory Evaluation
9 L1 z4 z0 W- H2 r6 J5 wThe bone age was consistent with 28 months by& M9 ] z0 \1 Z6 k8 k
using the standard of Greulich and Pyle at a chrono-
* B' C1 g) W( W, t7 k" u, t' w* Mlogic age of 16 months (advanced).5 Chromosomal' N! j: p" @% q7 `: ?: F
karyotype was 46XY. The thyroid function test8 K3 g5 a% u3 O' y: {- v- ~
showed a free T4 of 1.69 ng/dL, and thyroid stimu-
0 d4 X2 n. |' b- X* K' l5 d# Elating hormone level was 1.3 µIU/mL (both normal).
8 }$ F2 f1 q; O7 Z! @! b; [& uThe concentrations of serum electrolytes, blood
$ S7 k$ z% k/ i# t/ f" Z9 B/ N+ Eurea nitrogen, creatinine, and calcium all were/ x; r5 Y# O6 x) M
within normal range for his age. The concentration
$ w! n9 E) H7 e# T, d8 A, p' Dof serum 17-hydroxyprogesterone was 16 ng/dL3 \; s A) i8 G+ a, p. p/ V
(normal, 3 to 90 ng/dL), androstenedione was 20
/ @; g u+ ]" g7 Q& [ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
( d4 @* F/ J) H- N7 L- v9 G; g& k, Pterone was 38 ng/dL (normal, 50 to 760 ng/dL),
1 u5 t* F$ R6 x pdesoxycorticosterone was 4.3 ng/dL (normal, 7 to
5 ]" r! K! P; n$ r% {49ng/dL), 11-desoxycortisol (specific compound S)
; {* ]/ O9 c/ K, Owas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-# T7 ^; A( S# f, `7 G& t
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total( ], z: a* f9 S/ E
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
! A: o7 B! Y3 d( W$ Y/ Band β-human chorionic gonadotropin was less than6 p t1 x5 R+ z8 R5 A( a3 t
5 mIU/mL (normal <5 mIU/mL). Serum follicular N7 L2 K' C3 w" _ B
stimulating hormone and leuteinizing hormone
5 q- p/ \% C- pconcentrations were less than 0.05 mIU/mL
9 V f; l" f% o7 g. d2 h3 N1 r(prepubertal).3 z# g( M; `, K9 |2 @* r
The parents were notified about the laboratory7 c' b% _9 i5 ~, p3 U( M
results and were informed that all of the tests were
6 ~: u3 W# C7 N5 hnormal except the testosterone level was high. The
) i+ ~6 b! s: X C8 t( J7 U9 h" Ufollow-up visit was arranged within a few weeks to8 l" v9 \% o% n* I( A7 o
obtain testicular and abdominal sonograms; how-/ ?# v! F6 V& E% m r
ever, the family did not return for 4 months.
' A0 {! V. w% P2 L2 {Physical examination at this time revealed that the# B% b: g* {2 o* u' ^
child had grown 2.5 cm in 4 months and had gained
5 \; k R6 k( y. |+ K2 kg of weight. Physical examination remained
& @, ^4 s1 a/ V7 ~1 S+ |4 d* F! s* _2 r0 _unchanged. Surprisingly, the pubic hair almost com-5 l& y, c; e# y' M
pletely disappeared except for a few vellous hairs at
" \9 \( J- T5 Y; K& Fthe base of the phallus. Testicular volume was still 2! E; s( B4 c$ a+ ~# m
mL, and the size of the penis remained unchanged.
& @2 Y5 p. C. c- v" C' J1 H% zThe mother also said that the boy was no longer hav-
, G9 z% e( O# G& w0 _4 ^ing frequent erections.; g9 a: V7 z; [$ Y, Y
Both parents were again questioned about use of
9 `( `$ o7 d% O8 tany ointment/creams that they may have applied to
6 j( V8 ^$ i+ d0 }& o9 d; ]+ tthe child’s skin. This time the father admitted the
- @( B" P2 v# ]; [Topical Testosterone Exposure / Bhowmick et al 5412 o3 J% Q* W) K K {0 c
use of testosterone gel twice daily that he was apply-
( Z$ R5 N. T: ?% B0 [8 \5 @ing over his own shoulders, chest, and back area for
6 Q8 p4 ?, l% N+ E) ?6 S" pa year. The father also revealed he was embarrassed2 s6 U$ `8 p/ V
to disclose that he was using a testosterone gel pre-
% ]- h: P; b' d5 Dscribed by his family physician for decreased libido
/ }9 M' v8 D0 W3 p, I; Dsecondary to depression.
& t0 Y: k5 g" zThe child slept in the same bed with parents.6 J2 z6 D7 H+ w2 F; t$ \
The father would hug the baby and hold him on his) x; M* o; s2 t) y7 P0 w0 y9 @
chest for a considerable period of time, causing sig-1 H! g9 k) M0 H' b! Y. V& L5 c
nificant bare skin contact between baby and father./ i, U) Z9 C1 {# G' ^: F" a0 Z
The father also admitted that after the phone call,7 V" i) v$ a, @& [
when he learned the testosterone level in the baby
" z! ]; G" h t: z' ywas high, he then read the product information o9 a- u. W( }: T4 @
packet and concluded that it was most likely the rea-7 ~9 J/ I; B% e0 [
son for the child’s virilization. At that time, they! m8 L1 y# P# {2 S2 o6 F# ^% y/ {
decided to put the baby in a separate bed, and the c8 S# p @+ D R
father was not hugging him with bare skin and had
+ |' ^# I" ?6 Cbeen using protective clothing. A repeat testosterone
2 y( Z6 O- j- x$ ~$ ~test was ordered, but the family did not go to the6 |, O& I5 C, E2 g8 h8 B
laboratory to obtain the test.. P, t( X* Y' I% z. ?# W2 U
Discussion! _( [' B' f2 u. \
Precocious puberty in boys is defined as secondary& G( f0 ]1 p4 F% z. Y* R
sexual development before 9 years of age.1,4
3 ~9 \$ d& X9 b/ k$ [Precocious puberty is termed as central (true) when
; l+ c" ^9 N9 o [) bit is caused by the premature activation of hypo-( O; D8 C, ^& i/ J, B. T
thalamic pituitary gonadal axis. CPP is more com-
0 i! `9 h& f7 ?mon in girls than in boys.1,3 Most boys with CPP. ^2 i4 s3 `5 t; T# H
may have a central nervous system lesion that is# d; C, [+ i6 N) n2 d7 @. I
responsible for the early activation of the hypothal-) @9 ^* \) c4 ~$ C+ G1 G' ?
amic pituitary gonadal axis.1-3 Thus, greater empha-' h9 F( N2 Y- W$ ?5 f$ n& ]
sis has been given to neuroradiologic imaging in2 W8 K* x+ U3 f7 |/ r1 g. B& J( L5 v
boys with precocious puberty. In addition to viril-
3 s* I Q! y% j" x4 k8 W& I5 X( qization, the clinical hallmark of CPP is the symmet-/ _/ w; y9 Y2 W5 g b
rical testicular growth secondary to stimulation by& F& [. g Z+ q/ j e
gonadotropins.1,38 N, \% g4 ?% I2 ^' h
Gonadotropin-independent peripheral preco-
- K# X7 w0 ^: G$ j+ ucious puberty in boys also results from inappropriate, L* C h% l: b3 v; \8 e9 f* d# a
androgenic stimulation from either endogenous or
" ~# H6 v; O5 W3 l, Qexogenous sources, nonpituitary gonadotropin stim-: Q" }0 r |8 {. q/ ? a( K
ulation, and rare activating mutations.3 Virilizing
! K3 S: G N/ q1 O; r+ A& icongenital adrenal hyperplasia producing excessive4 d- `) f& u3 E: Z1 U; z
adrenal androgens is a common cause of precocious& l/ U/ U0 k2 s
puberty in boys.3,4. w1 m1 k& Y8 H. p
The most common form of congenital adrenal3 |' [2 {: W3 g+ g4 z9 f- {
hyperplasia is the 21-hydroxylase enzyme deficiency.7 l6 l3 z7 c; u! h2 v% x5 ?
The 11-β hydroxylase deficiency may also result in
* K5 \; p' d0 rexcessive adrenal androgen production, and rarely,
9 ?2 m5 M' Q4 E$ i9 C* N, N# V! Oan adrenal tumor may also cause adrenal androgen9 d- a/ }+ Y: P1 K9 j
excess.1,3+ I$ p. @7 y& ^# V! P7 j3 Y: t
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
, ^& n p, n% m M$ L( r# J1 g542 Clinical Pediatrics / Vol. 46, No. 6, July 2007& Z; O9 r: k" r1 T
A unique entity of male-limited gonadotropin-
, W% `" @6 e% g0 R; Dindependent precocious puberty, which is also known
. I; m2 E* D6 m/ o7 p( eas testotoxicosis, may cause precocious puberty at a
( @9 j2 f1 B7 t9 O: bvery young age. The physical findings in these boys, m- d4 O! F8 Q: J! a
with this disorder are full pubertal development,1 Q: A: R" }. w" _) d& S& h5 p, X$ k
including bilateral testicular growth, similar to boys2 V2 u1 R1 Z# n# q, Y" U: ?; p
with CPP. The gonadotropin levels in this disorder& t M' y( ~1 Q
are suppressed to prepubertal levels and do not show
$ o* M, L) \9 y2 E& w* n( x! vpubertal response of gonadotropin after gonadotropin- j+ j; M& T, A. H0 ?9 L8 L- C
releasing hormone stimulation. This is a sex-linked) x, z- R8 h: P$ f: K
autosomal dominant disorder that affects only N* |4 r& w8 Q! a( V. K9 }0 b
males; therefore, other male members of the family
$ H# l8 ?# _# s* m. Vmay have similar precocious puberty.3
1 x7 k0 [" G3 s' j: J7 p5 |In our patient, physical examination was incon-
, C. B" {0 N) O' nsistent with true precocious puberty since his testi-9 _) ]4 M) d% {5 L) F
cles were prepubertal in size. However, testotoxicosis7 t$ L* g; Y" }0 R
was in the differential diagnosis because his father0 u/ m% f n0 n* g. s+ l0 C
started puberty somewhat early, and occasionally,
8 u- s4 K: I3 Z% Ftesticular enlargement is not that evident in the+ p4 q7 {& ]) O) t, n; D9 V9 y
beginning of this process.1 In the absence of a neg-6 ]. ~$ c0 ?8 p4 @4 b" {% F; `1 o; R
ative initial history of androgen exposure, our8 i7 O( d) v' m* Q& x
biggest concern was virilizing adrenal hyperplasia,. b; X) J( {1 t0 m2 c" r
either 21-hydroxylase deficiency or 11-β hydroxylase* E+ a6 {# z) d0 Y# v* u
deficiency. Those diagnoses were excluded by find-6 M$ N E7 o1 d; k; D2 t3 H
ing the normal level of adrenal steroids.
- Z1 k4 f4 p1 X- y3 L- `The diagnosis of exogenous androgens was strongly
- F5 L2 O- F r5 ?suspected in a follow-up visit after 4 months because
8 h2 E1 S; n7 B0 E+ u0 x/ A: Uthe physical examination revealed the complete disap-
4 H. I/ ~1 z) a9 J0 g9 Wpearance of pubic hair, normal growth velocity, and
& }/ @4 l$ H+ G8 c0 Vdecreased erections. The father admitted using a testos-6 Y, y2 {6 w$ a3 I9 X5 m) H
terone gel, which he concealed at first visit. He was# m5 i/ u3 o% i" b
using it rather frequently, twice a day. The Physicians’
. r& q$ e! T. U0 WDesk Reference, or package insert of this product, gel or1 c/ a7 r! i: G% B
cream, cautions about dermal testosterone transfer to8 o1 D% i( |5 B3 T" n `" i/ i
unprotected females through direct skin exposure.# H/ [. o' d# @3 C" t. m" h& |# h
Serum testosterone level was found to be 2 times the* M9 F3 [+ ~2 B9 k- N
baseline value in those females who were exposed to
" @6 ?2 F6 a. L6 B9 L5 |2 B7 Ieven 15 minutes of direct skin contact with their male
" x( q( N# [/ I' M/ {- Mpartners.6 However, when a shirt covered the applica-6 \" ^% U O1 G7 J. c5 l% L
tion site, this testosterone transfer was prevented., g2 r* u+ y& X ~; L0 C4 E; U# L/ }5 O
Our patient’s testosterone level was 60 ng/mL,; d0 _; b* B' {. {) E6 X8 _
which was clearly high. Some studies suggest that; x9 r% q3 T8 \/ a7 }
dermal conversion of testosterone to dihydrotestos-% z: b6 J8 G$ H+ N. [
terone, which is a more potent metabolite, is more$ J I% f: |0 `* G- R- {* A9 \
active in young children exposed to testosterone
) ~$ y, f) L4 N1 V$ L# rexogenously7; however, we did not measure a dihy-
' D! }$ t0 i; E0 Ddrotestosterone level in our patient. In addition to' p' {5 j1 a! P0 p5 f$ r2 a. l
virilization, exposure to exogenous testosterone in+ B4 b1 N; b( }$ Y" ~2 h" O9 |1 C
children results in an increase in growth velocity and
! v5 g: [4 X! k" }6 yadvanced bone age, as seen in our patient.
( X- H2 t" k! u% S' f( X1 j4 l/ zThe long-term effect of androgen exposure during9 \: J) w/ t" Z' j
early childhood on pubertal development and final
4 k; T: C+ N3 J. @/ U4 eadult height are not fully known and always remain
X+ i2 V" y0 X% R/ ba concern. Children treated with short-term testos-
; l8 W. q% |3 A* U2 _* h5 M3 a- Rterone injection or topical androgen may exhibit some
3 u' N% n$ N# O7 K1 D; [acceleration of the skeletal maturation; however, after* q+ k4 X+ M! d/ ]! z+ _, [
cessation of treatment, the rate of bone maturation
- o, ~4 u+ K2 A/ |decelerates and gradually returns to normal.8,9
1 ~1 K5 `& i; p* l5 R% T4 MThere are conflicting reports and controversy
0 ]6 U. x- p4 G% z1 `over the effect of early androgen exposure on adult
, f. |/ E" R; Y r, {! vpenile length.10,11 Some reports suggest subnormal
; Y1 L5 m/ d w1 a) o# R# \" F( {adult penile length, apparently because of downreg-2 x- R4 N9 p2 B' t+ w
ulation of androgen receptor number.10,12 However,% h7 K$ J, k t
Sutherland et al13 did not find a correlation between4 h5 s) A; ^1 O( D( k+ A+ J, W
childhood testosterone exposure and reduced adult
" Z5 P( y$ E/ m6 n1 ]penile length in clinical studies.
8 B& v* k) d( M9 P7 u# ^Nonetheless, we do not believe our patient is, @' N) X( K; v( V* b6 h+ @
going to experience any of the untoward effects from
! R1 z' D) l: x0 i5 ~ Z6 ztestosterone exposure as mentioned earlier because- u1 t5 f+ b6 b5 q [
the exposure was not for a prolonged period of time.1 q' Y( @. J- @4 H
Although the bone age was advanced at the time of
! v0 D* J1 Q; t* ddiagnosis, the child had a normal growth velocity at
& |$ l) i/ u: `* _the follow-up visit. It is hoped that his final adult
' y% R" n+ ?' P) }4 Vheight will not be affected.
0 L& k& a( w. N5 S! L2 k9 ^Although rarely reported, the widespread avail-
/ A& b- G( I: r5 gability of androgen products in our society may* o4 e" M# E. R+ D+ w+ p: N
indeed cause more virilization in male or female1 K8 }% b, B& I5 {
children than one would realize. Exposure to andro-
, V W% S5 O6 ^. F, X& ^2 qgen products must be considered and specific ques-
& D" D4 x$ N7 m5 qtioning about the use of a testosterone product or
. n( H& C" Y0 g; ]% |& t2 ?" C0 zgel should be asked of the family members during
* \; o% u9 I7 p+ r- Y8 @9 f6 gthe evaluation of any children who present with vir-# d9 j- X( r( { ?
ilization or peripheral precocious puberty. The diag-0 a$ g$ k% E. F9 H& o
nosis can be established by just a few tests and by7 y! h, {% l7 U% Z: R
appropriate history. The inability to obtain such a
1 {. G% S! [3 `# y8 Vhistory, or failure to ask the specific questions, may
( D+ m" a% M, L, M$ ]9 u+ Zresult in extensive, unnecessary, and expensive8 ^ x6 ~% G% o7 ^. {
investigation. The primary care physician should be& A) z9 T% l/ E
aware of this fact, because most of these children
6 L' A+ n, p( a2 Lmay initially present in their practice. The Physicians’/ ^1 z$ U- l# }3 Y3 k8 W
Desk Reference and package insert should also put a1 Y0 y& `5 s9 ]5 F7 M" ?: Q f6 C9 h
warning about the virilizing effect on a male or7 v* ^1 m/ k- S7 o% P O$ e
female child who might come in contact with some-( u/ v% R8 v7 ?; B$ S
one using any of these products.
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/ r B' U5 h; [5 W2002: 565-628.
6 e) `2 |: E0 H a2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
6 ~6 J# l0 m ~ H. C7 I( o* Vpuberty in children with tumours of the suprasellar pineal8 i: p/ k5 l/ d& O
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, C. Q0 R" Y) I# l- Z! Xareas: organic central precocious puberty. Acta Paediatr.
- {' e2 g) t$ z- }: s2001;90:751-756.
6 r s+ K7 V( ~' R$ ?3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
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Dekker Inc; 2003:211-238. e& x- F2 G; k8 @) a
4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
H+ P, Q' ]- xdevelopment in a two-year-old boy induced by topical
7 e3 W& D& `, }. @4 t3 K/ Wexposure to testosterone. Pediatrics. 1999;104:e23.! t6 k0 {& l6 D; i7 }: U
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
: Y2 I) C% E5 A7 B5 S( T/ o4 k5 HSkeletal Development of the Hand and Wrist. 2nd ed.( h4 _2 i! F' {( \! g2 V% q; T, l
Stanford, CA: Stanford University Press; 1959.
- D; h. {( N5 o4 @- X) Z6. Physicians’ Desk Reference. Androgel 1% testosterone,4 z4 C: z# |# s9 H$ r& ?
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