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is a significant concern for physicians. Central7 d% q/ C1 @ }0 M2 k* B
precocious puberty (CPP), which is mediated% d* t; O T& {- ^
through the hypothalamic pituitary gonadal axis, has
- H* Z1 @' _( X( p5 e0 O; {a higher incidence of organic central nervous system: A4 z% Z) n0 n. T
lesions in boys.1,2 Virilization in boys, as manifested0 J& Y9 w) [9 v: ^
by enlargement of the penis, development of pubic
! E/ S9 f; e) |hair, and facial acne without enlargement of testi-
0 ~0 k2 M, J% Ucles, suggests peripheral or pseudopuberty.1-3 We" W+ G" u$ \ L% b- {% _ |
report a 16-month-old boy who presented with the
% Z" k3 t1 e( n' I! e) }1 aenlargement of the phallus and pubic hair develop-
/ b4 H! b" y: ^' S! Qment without testicular enlargement, which was due
9 D0 q/ r: |9 B3 W( q7 l4 |to the unintentional exposure to androgen gel used by( D) ?2 \/ z; I1 K6 l$ \, Q
the father. The family initially concealed this infor-8 G) m: v9 ?0 r2 d/ g5 U3 Q+ J
mation, resulting in an extensive work-up for this
& \- ^; J( a3 dchild. Given the widespread and easy availability of
& Z8 j3 n9 g. d* w- ^+ ^# ^; Utestosterone gel and cream, we believe this is proba-
# z: p, m5 l5 O9 Jbly more common than the rare case report in the
0 F' @' M3 O/ F5 [; V5 tliterature.4* b F* e1 y/ x3 [
Patient Report& S: M8 X7 \! L
A 16-month-old white child was referred to the7 d& _: ^! C6 U+ h! A0 b9 x% x
endocrine clinic by his pediatrician with the concern1 h( s+ g5 J$ s9 f
of early sexual development. His mother noticed5 H0 h K. u1 ?0 ?( o; g7 T
light colored pubic hair development when he was
' V* c& J, z. U4 l W! ^0 l7 M" c& IFrom the 1Division of Pediatric Endocrinology, 2University of
, ^2 `+ N- |0 g) HSouth Alabama Medical Center, Mobile, Alabama./ t8 Q, j8 Q/ u1 O
Address correspondence to: Samar K. Bhowmick, MD, FACE,
/ k8 U# g7 i& c) oProfessor of Pediatrics, University of South Alabama, College of
* P$ o& X. X& K ]Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
{: s# V* |1 `+ ?$ T+ i3 d1 `) X! Je-mail: [email protected].5 L# b, C v, [+ _0 `/ Q$ R
about 6 to 7 months old, which progressively became) q" w n. r9 W2 u3 w& t: C
darker. She was also concerned about the enlarge-
4 I1 v0 M" p8 F% M6 D* _4 Dment of his penis and frequent erections. The child
+ C3 [0 ~# m& F- R% i7 r) Rwas the product of a full-term normal delivery, with. f3 N5 x2 t0 t4 \( r D
a birth weight of 7 lb 14 oz, and birth length of
8 H+ o* g7 T: D, t0 R20 inches. He was breast-fed throughout the first year
+ B6 t+ X* b6 N3 C1 e% Hof life and was still receiving breast milk along with
0 y3 O' W- K0 J' L r* J1 Y' }! c9 e6 psolid food. He had no hospitalizations or surgery,
! X* H' `* k% o6 t% a4 t$ aand his psychosocial and psychomotor development( D3 B4 Q* W1 W$ b# e, ]1 F% d
was age appropriate.
9 J' ^& D5 o7 }& t9 ~. `. R' JThe family history was remarkable for the father,2 R$ d# e: h3 `
who was diagnosed with hypothyroidism at age 16,) I+ h' j' ?' h0 w8 Z: Z4 |. c P
which was treated with thyroxine. The father’s
6 x5 y& {8 g$ p0 m! h( R6 zheight was 6 feet, and he went through a somewhat* Q* D O7 Y8 C( b: N
early puberty and had stopped growing by age 14.
, g! n$ w" x- x( M- S' e N% \The father denied taking any other medication. The
% S' j6 ~! ^4 S; `8 Schild’s mother was in good health. Her menarche
8 `* S3 X, V" [, X, Kwas at 11 years of age, and her height was at 5 feet2 ~5 t) _7 X( f, v% n
5 inches. There was no other family history of pre-
5 T* h" h" a+ dcocious sexual development in the first-degree rela-3 j& O) P/ T8 E
tives. There were no siblings.$ T, u' ?* }# M* e: s* s1 r. A
Physical Examination
( O5 B$ B- g5 lThe physical examination revealed a very active,( g" b: D& v+ J3 i% F
playful, and healthy boy. The vital signs documented
# ?; i# A6 X$ b- k" ya blood pressure of 85/50 mm Hg, his length was
+ m; p8 Y, n& ^" L90 cm (>97th percentile), and his weight was 14.4 kg
5 R3 y& F3 W3 t+ k" ~; {(also >97th percentile). The observed yearly growth9 A4 a2 {$ b6 D6 ~# J
velocity was 30 cm (12 inches). The examination of! a# F1 y* q/ c3 P$ m0 A. m
the neck revealed no thyroid enlargement.% W( G/ e9 W& P: N, H2 j. ~) M3 C
The genitourinary examination was remarkable for) p" [3 L" C) P* L
enlargement of the penis, with a stretched length of! ^+ u( S' a- G) o+ K0 l+ k: q
8 cm and a width of 2 cm. The glans penis was very well
0 F# o V% d& y4 m: {' |) fdeveloped. The pubic hair was Tanner II, mostly around! G& ?$ r7 n/ h$ t' V9 Z8 e L
540! p- ^8 Q6 x/ o
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
7 e% o7 n1 N' C# q$ y3 A' d$ C( H4 Q. qthe base of the phallus and was dark and curled. The
/ Y3 i" d E' M! F8 U) ~# itesticular volume was prepubertal at 2 mL each.
! }) `$ n9 H& l0 z8 e7 j) s& ?The skin was moist and smooth and somewhat
: c, c$ t! k7 @oily. No axillary hair was noted. There were no( d0 ~. x+ {7 i
abnormal skin pigmentations or café-au-lait spots.
, s, ?3 t% O, [- bNeurologic evaluation showed deep tendon reflex 2+
" j( R4 k- ?/ X6 S4 lbilateral and symmetrical. There was no suggestion
& H/ b; Q5 x; g- _! h% z0 Eof papilledema.
! d5 b4 ~$ d, Y# o- j+ r; BLaboratory Evaluation
F- t( E8 B8 k: UThe bone age was consistent with 28 months by5 z5 c" _7 i& v u$ |# D
using the standard of Greulich and Pyle at a chrono-
6 W4 E# D9 T: V: i; Clogic age of 16 months (advanced).5 Chromosomal
3 P1 l; _" N3 ^/ r3 `* S4 bkaryotype was 46XY. The thyroid function test+ w' {* N8 e; d( y Y$ k8 y2 E
showed a free T4 of 1.69 ng/dL, and thyroid stimu-0 h9 Q6 ^% b4 ~+ i- E1 d
lating hormone level was 1.3 µIU/mL (both normal).6 ^ i6 h, e- Z& C/ e5 A/ L) R
The concentrations of serum electrolytes, blood' R* l) ^" f5 O& O" d# p
urea nitrogen, creatinine, and calcium all were7 o0 h, ~: o5 Z ~ M3 l. W
within normal range for his age. The concentration
2 M. ?2 a4 B- y* Z) v! Wof serum 17-hydroxyprogesterone was 16 ng/dL6 Z0 ^9 ?# [( x3 |$ c' ^
(normal, 3 to 90 ng/dL), androstenedione was 20- O' q4 d* m% D3 K3 N# p) ~& p
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-/ h1 S( l& D7 l3 W) C! c0 e
terone was 38 ng/dL (normal, 50 to 760 ng/dL),% U* K. I( V- M+ D7 }5 x, k
desoxycorticosterone was 4.3 ng/dL (normal, 7 to5 M; A5 m& w% n: l" q/ G! n
49ng/dL), 11-desoxycortisol (specific compound S)+ J) J( b, y( G) H2 V; z' }( t
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-" I4 U6 S' F9 }1 a, ^4 b9 R
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
$ W% F3 Q( U3 p! ltestosterone was 60 ng/dL (normal <3 to 10 ng/dL),7 }( l0 p- X4 [% u3 ?* R7 r
and β-human chorionic gonadotropin was less than% e% R6 Z: |* I4 O5 S
5 mIU/mL (normal <5 mIU/mL). Serum follicular0 _, q, W* M9 d$ i R
stimulating hormone and leuteinizing hormone
& | K; B' N2 I& Yconcentrations were less than 0.05 mIU/mL1 I. m1 ~. D& P+ j7 |
(prepubertal).) X5 ]2 F% M# u; {- \' P
The parents were notified about the laboratory
8 a" E9 r+ }( q$ Aresults and were informed that all of the tests were
# w) R% j$ p, m6 i, Z+ U6 z3 Snormal except the testosterone level was high. The! u' {3 t0 j/ ?2 g
follow-up visit was arranged within a few weeks to
3 k0 A8 E. v/ l7 J! m. S: fobtain testicular and abdominal sonograms; how-3 P1 g: P) Y* v" m, \0 Y& |
ever, the family did not return for 4 months.
) V e' _5 Z8 R( ~: V/ _! W& ?' n; lPhysical examination at this time revealed that the- w% B& l& l' j
child had grown 2.5 cm in 4 months and had gained
6 g% U* d# i9 B4 F2 kg of weight. Physical examination remained+ `% M8 e- V4 n3 ~5 c
unchanged. Surprisingly, the pubic hair almost com-% f* {6 I3 o# O" [
pletely disappeared except for a few vellous hairs at
0 ?/ t% l# d; _4 ethe base of the phallus. Testicular volume was still 28 Q1 ~( f" T3 ?
mL, and the size of the penis remained unchanged.0 U6 R/ x- U7 S$ d
The mother also said that the boy was no longer hav-+ Z6 h9 r& w X. C
ing frequent erections.6 s9 p0 q5 H" ~$ B' P
Both parents were again questioned about use of
" G4 H: C% _4 jany ointment/creams that they may have applied to8 G6 G. k/ M6 u( g
the child’s skin. This time the father admitted the0 h u1 K- R. \/ A+ j/ y6 I# X' r) m
Topical Testosterone Exposure / Bhowmick et al 541 R; S% L7 C q# j& [8 {
use of testosterone gel twice daily that he was apply-
+ p" Z/ g* ^ W) `1 X+ Q, zing over his own shoulders, chest, and back area for6 N# d4 a0 r1 p% {8 @ [' N1 `5 @, B# x0 N
a year. The father also revealed he was embarrassed0 D3 ?' O, ~! `, p% s9 P$ J
to disclose that he was using a testosterone gel pre-' l% e" P$ f C. x/ d
scribed by his family physician for decreased libido( C: f0 v0 M& Q' k
secondary to depression.
- r" z* @: u9 Y# k# T# OThe child slept in the same bed with parents.
/ _1 }+ R& z7 E- Z: f) YThe father would hug the baby and hold him on his% u+ H% q, y, A0 S- H4 y- G
chest for a considerable period of time, causing sig-# z% `& B+ N" Q
nificant bare skin contact between baby and father.
( Y5 C$ h' Y# J! J4 o' \8 i; pThe father also admitted that after the phone call,4 g7 |8 s% p% E( ~5 m7 f
when he learned the testosterone level in the baby; R' B8 {) h3 q# ?( Y" F) o5 e4 X
was high, he then read the product information" D1 k; S( |+ n0 x9 ~
packet and concluded that it was most likely the rea-+ p, L- E0 B9 A: D
son for the child’s virilization. At that time, they) M P. x9 x, e! d
decided to put the baby in a separate bed, and the: M) L* G! y: I$ I
father was not hugging him with bare skin and had& p' J ]' k" `1 }( A; N3 K$ W
been using protective clothing. A repeat testosterone
& E0 K. [3 y" k# v j1 u% ftest was ordered, but the family did not go to the# Z. O4 g4 O* U4 `3 O
laboratory to obtain the test.
* `# u- I* S( t) q+ g8 GDiscussion
2 O9 T9 W1 Z ^; P! BPrecocious puberty in boys is defined as secondary9 k4 e% f- y5 G
sexual development before 9 years of age.1,4. x& g( r3 Z# C. d
Precocious puberty is termed as central (true) when
- N6 p0 V7 v/ X9 [# j- d5 P6 _& Zit is caused by the premature activation of hypo-
! O/ O) W6 D, d' ?5 O& Kthalamic pituitary gonadal axis. CPP is more com-
2 y1 D8 t v6 W5 D) B* V- vmon in girls than in boys.1,3 Most boys with CPP
7 b/ Z0 E7 V4 n; tmay have a central nervous system lesion that is
4 W6 ~1 D2 `# }9 W6 [3 Dresponsible for the early activation of the hypothal-
5 ]( k! l: R j& @amic pituitary gonadal axis.1-3 Thus, greater empha-4 z1 d* u0 h' z. m0 R2 E
sis has been given to neuroradiologic imaging in
- ^4 U3 f3 m" v, A& M* T0 Qboys with precocious puberty. In addition to viril- U, j; X3 a8 X x' S2 |
ization, the clinical hallmark of CPP is the symmet-$ q- N# x4 G/ _
rical testicular growth secondary to stimulation by. T/ F1 I$ j( f- b* q# P, t! @, u
gonadotropins.1,3) h+ `& h m/ t5 }
Gonadotropin-independent peripheral preco-* [: i# |+ E: w1 d x6 M3 N4 i
cious puberty in boys also results from inappropriate" e9 _2 o7 }. I, Z- B
androgenic stimulation from either endogenous or
& T# {0 z, T* K) q% w# T4 \exogenous sources, nonpituitary gonadotropin stim-
% C$ J1 u3 _ N$ k: H+ L6 Julation, and rare activating mutations.3 Virilizing
4 L/ M4 S3 I; D4 K( S$ wcongenital adrenal hyperplasia producing excessive
$ k, _* d$ ^5 k7 ~adrenal androgens is a common cause of precocious
9 U+ P' `8 f" s+ m$ J6 B" z8 u* wpuberty in boys.3,4
6 q9 B/ z9 G6 `% J: t7 K1 dThe most common form of congenital adrenal6 r P1 u2 B* h2 o
hyperplasia is the 21-hydroxylase enzyme deficiency.
( ?* O1 [1 }7 F) B. x8 @The 11-β hydroxylase deficiency may also result in2 N- P: J& e7 N4 R
excessive adrenal androgen production, and rarely,
' B0 [& Y9 T9 Z2 w% k3 fan adrenal tumor may also cause adrenal androgen
/ O/ f! L. y; O% S8 G' ~* \6 Jexcess.1,3
/ L% d9 K$ C9 eat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from" o: J7 E7 ~ C! b% K9 v. O
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
" f+ P; b9 }0 W6 k8 W7 z8 t! h& UA unique entity of male-limited gonadotropin-
{& R; Z0 N# P1 a2 @0 e0 _independent precocious puberty, which is also known( @7 w7 ] g/ v4 f
as testotoxicosis, may cause precocious puberty at a
9 C5 a, I* F, G r! L* ^4 O0 Kvery young age. The physical findings in these boys/ [1 K L. g$ r. |$ ]; C* ?, k+ K
with this disorder are full pubertal development,
1 L/ x' G k; ^0 O! v" Iincluding bilateral testicular growth, similar to boys) a$ Z' `4 R1 y1 u
with CPP. The gonadotropin levels in this disorder
5 b9 T; O& u$ D$ q3 K+ Y! |/ jare suppressed to prepubertal levels and do not show
. H8 e% f9 b! Y; p( S9 _pubertal response of gonadotropin after gonadotropin-7 n- C; e" C1 l2 a3 o
releasing hormone stimulation. This is a sex-linked
: Z8 n6 j6 f( ~ F1 y- _autosomal dominant disorder that affects only$ K' ~% s. b: k4 ]
males; therefore, other male members of the family
" J2 L+ ]( w( zmay have similar precocious puberty.37 [$ A' {7 u4 v( E/ r+ Z
In our patient, physical examination was incon-
! f) a' n, h' m) a& L+ |# qsistent with true precocious puberty since his testi-
2 {' z1 G: M% o- A6 q, E' Rcles were prepubertal in size. However, testotoxicosis% J" X6 U. v2 a) l* ?$ L
was in the differential diagnosis because his father" [. ~+ D. ]& Q3 W1 J- n4 m# V: y
started puberty somewhat early, and occasionally,
8 W4 d/ h* d% l# M C2 A* Rtesticular enlargement is not that evident in the
+ H# X% Q3 f0 E0 q* h5 Z6 dbeginning of this process.1 In the absence of a neg-: Z/ k8 M$ z( }3 }$ I, c* C& C
ative initial history of androgen exposure, our
( H- r1 v, \$ A* r7 Cbiggest concern was virilizing adrenal hyperplasia,
; I5 ^) p$ R: _8 b3 o% Leither 21-hydroxylase deficiency or 11-β hydroxylase3 X2 {- D a6 a- [0 I
deficiency. Those diagnoses were excluded by find-
; J# c& ]' P6 Jing the normal level of adrenal steroids.
+ w( V/ X9 ~& W! z% ~The diagnosis of exogenous androgens was strongly
6 f: q; h3 `$ n6 {. o; p: h) {* csuspected in a follow-up visit after 4 months because. Q- J: E: a/ J- a) @
the physical examination revealed the complete disap-2 V& \* C- }2 a5 k: { R4 q
pearance of pubic hair, normal growth velocity, and
8 `! J$ B4 p3 n7 q3 Jdecreased erections. The father admitted using a testos-. s% O6 g$ I8 a1 N
terone gel, which he concealed at first visit. He was
6 Y& @& d5 F7 h$ G( E( susing it rather frequently, twice a day. The Physicians’( H: ?( x7 W# ~- ~
Desk Reference, or package insert of this product, gel or; J) d- k. s- \ y4 n
cream, cautions about dermal testosterone transfer to% G, X- I8 c9 f# k1 r* E
unprotected females through direct skin exposure.
t ^: Y, m+ ^0 F4 {Serum testosterone level was found to be 2 times the
$ E" E3 ?0 T" Lbaseline value in those females who were exposed to4 C( D' e0 Z, J2 O* P8 {
even 15 minutes of direct skin contact with their male
/ D# t3 M0 K! \8 l& M. ypartners.6 However, when a shirt covered the applica-
0 O! c4 q% Y7 Q! c. y1 Rtion site, this testosterone transfer was prevented.2 t6 @ ~3 R- S a# h+ W- }" x# p
Our patient’s testosterone level was 60 ng/mL,
# C9 r7 A" C' ^9 {3 Jwhich was clearly high. Some studies suggest that# @5 {6 j" q+ H2 Y4 K; n
dermal conversion of testosterone to dihydrotestos-: K" I6 D5 d1 m. A, J$ u, y3 |: z
terone, which is a more potent metabolite, is more) I6 x. u! J7 P- `& w; Y
active in young children exposed to testosterone. K4 d2 V, L; ]7 L
exogenously7; however, we did not measure a dihy-
# E( t( \4 F- l. k/ qdrotestosterone level in our patient. In addition to8 v4 A! n, r! }
virilization, exposure to exogenous testosterone in9 M2 O6 Z" g7 q" b c3 P; o5 g
children results in an increase in growth velocity and
; E# F, n8 ]6 Z/ x# m; R/ _8 kadvanced bone age, as seen in our patient.
, k: R$ G* [0 ?! B- ]! AThe long-term effect of androgen exposure during
8 R. `" e; |# ~9 p0 }0 hearly childhood on pubertal development and final, r8 h; D; Z2 I+ W; l, ~. W0 ?/ `( e
adult height are not fully known and always remain4 G# l6 O' W+ m( |! ?' S7 M* j4 V
a concern. Children treated with short-term testos-
' {+ s; p. ]6 o/ m1 z- hterone injection or topical androgen may exhibit some
0 n( Z" `; k6 ~- f+ U2 ~acceleration of the skeletal maturation; however, after# j& u4 d. A e
cessation of treatment, the rate of bone maturation5 I$ z' q ^ @, f4 a" J
decelerates and gradually returns to normal.8,99 l9 _, m" ~4 ]8 n/ S% v
There are conflicting reports and controversy
/ ~4 R4 f! b8 k* e4 r! ~over the effect of early androgen exposure on adult
6 [5 \2 b. n" J( L: zpenile length.10,11 Some reports suggest subnormal: s' F# v" A$ T7 W/ R. f
adult penile length, apparently because of downreg-
) t' }; i; x" ^- y5 Pulation of androgen receptor number.10,12 However,7 @ U5 {: l" I2 ?6 @8 p; U m& I
Sutherland et al13 did not find a correlation between
! `8 s; Q! G9 v8 b7 h4 u) B% {# U+ @childhood testosterone exposure and reduced adult
7 I1 V" X; e% E; j5 Upenile length in clinical studies.* l, s, s3 b+ w/ w r" C7 }
Nonetheless, we do not believe our patient is
* Q5 T0 ~- Y/ M3 I: J3 a$ Sgoing to experience any of the untoward effects from2 G8 _: g! B3 `1 k
testosterone exposure as mentioned earlier because2 X0 y7 o0 y7 H" {# t F
the exposure was not for a prolonged period of time.0 r; y1 ]6 `( x1 [9 ?4 J. T
Although the bone age was advanced at the time of
?( N1 |: E: B# ]( N8 O7 Udiagnosis, the child had a normal growth velocity at, I! q* P6 _9 K
the follow-up visit. It is hoped that his final adult
+ o. B$ y& B- _+ i* o4 qheight will not be affected. z* j* |9 E. [; \( U0 X
Although rarely reported, the widespread avail-4 S3 d% q: a) l$ D) E, O
ability of androgen products in our society may
" W- K+ }' K+ aindeed cause more virilization in male or female7 H6 y' U# k9 y. v9 h- M
children than one would realize. Exposure to andro-
/ \1 y3 U2 q( H3 @gen products must be considered and specific ques-
" }* ^" u1 t% y; t" J+ B5 e, mtioning about the use of a testosterone product or6 c$ P* N6 ^. F" q) B( B: o1 R# M
gel should be asked of the family members during
( y+ e" O f/ W$ {the evaluation of any children who present with vir-
" D, o3 W& e$ O8 G& ^4 {1 wilization or peripheral precocious puberty. The diag-; S6 g0 {7 ? j2 q& ? \- z
nosis can be established by just a few tests and by8 {! ~ J+ k8 C) H. i! [
appropriate history. The inability to obtain such a6 N5 `% C& i; V) f7 ~
history, or failure to ask the specific questions, may
$ o9 |) S4 N5 Eresult in extensive, unnecessary, and expensive
k0 w% |) B1 p# ]% H: Uinvestigation. The primary care physician should be8 o" Y, ?" o# n* J4 Z& [8 z
aware of this fact, because most of these children5 ^' _1 n& }2 p0 }; C) ?: r9 o6 V
may initially present in their practice. The Physicians’& g) r" u) w0 u, {0 \1 `& y
Desk Reference and package insert should also put a
" v) l q& j+ E. y f" U: ]warning about the virilizing effect on a male or% N F6 [4 g7 D) r: e7 }; l
female child who might come in contact with some-
9 W; v% N' c, M1 @/ l- |9 V! Gone using any of these products.$ O8 T' m) z% g3 h
References
, n* j0 R5 s5 N t# }5 ~1. Styne DM. The testes: disorder of sexual differentiation/ W' ~/ W! z- f9 r2 _' |/ v! d
and puberty in the male. In: Sperling MA, ed. Pediatric' b" O3 [/ S2 I b8 [
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;" j& u2 C, E; U
2002: 565-628.
, ?) `, C) B7 \5 t2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
- q, y2 z! |' |7 }puberty in children with tumours of the suprasellar pineal
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Topical Testosterone Exposure / Bhowmick et al 543
0 n+ K1 H5 {2 b6 @: pareas: organic central precocious puberty. Acta Paediatr.6 o* o% u% E8 r3 K$ S
2001;90:751-756.5 x3 v4 c; j& N: L
3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
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+ x5 [6 Y$ m, C$ D( R# h4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
, E1 N1 b5 r, K9 S1 y; [development in a two-year-old boy induced by topical
' u1 n7 ?; U( L2 Q) r: U+ Uexposure to testosterone. Pediatrics. 1999;104:e23.1 M/ L6 v8 b0 F! n# p
5. Greulich WW, Pyle SI, eds. Radiographic Atlas of1 G: U; g, t+ l. Y* Z- A7 `2 l
Skeletal Development of the Hand and Wrist. 2nd ed.
E. S" }3 a) z6 \9 jStanford, CA: Stanford University Press; 1959.
. V' I( L# D' A+ @- h5 P6. Physicians’ Desk Reference. Androgel 1% testosterone,0 i" D$ e& J4 m9 W. }
Unimed Pharmaceutical Inc. Montvale, NJ: Medical
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