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is a significant concern for physicians. Central; ?$ f0 O# ]; `. y% |/ _
precocious puberty (CPP), which is mediated8 s7 y2 w a3 i- L
through the hypothalamic pituitary gonadal axis, has4 V( G8 h9 E. p2 a3 {" {* ?
a higher incidence of organic central nervous system
6 q) F4 h0 ?+ N+ ?* ~0 J- llesions in boys.1,2 Virilization in boys, as manifested
& Y7 i2 g* w) S- D$ J' nby enlargement of the penis, development of pubic+ I# ~6 y( U$ B+ E+ Q0 F/ l( n- W9 I# E# E
hair, and facial acne without enlargement of testi-, O' L) Y) K' ^ P( J9 [
cles, suggests peripheral or pseudopuberty.1-3 We
8 d- ^2 U8 H9 C1 I# h2 ~: zreport a 16-month-old boy who presented with the
Y1 e) G" J- \2 x0 D, xenlargement of the phallus and pubic hair develop-. J5 o( r! m$ q" S3 S6 T$ j9 B
ment without testicular enlargement, which was due
O, L5 Z5 l( q' p9 m4 ^ lto the unintentional exposure to androgen gel used by
7 A+ O4 X+ e5 }. m1 U# M& dthe father. The family initially concealed this infor-1 ~0 r1 l: q( S) P0 ?* u7 t: v
mation, resulting in an extensive work-up for this3 ~% I7 W: X9 \) e3 _0 x7 r
child. Given the widespread and easy availability of
# O H0 U, x1 k9 D/ _) K# F- i1 Ztestosterone gel and cream, we believe this is proba-
( A' v; b* D- B3 Dbly more common than the rare case report in the0 u5 `9 k8 d) g8 i& U, d
literature.4
Z' t% F7 u& b4 zPatient Report
/ L. h7 l* c2 @" l+ N- J% cA 16-month-old white child was referred to the/ `7 g, e8 M4 Z, Z0 g. F
endocrine clinic by his pediatrician with the concern+ s( O }8 E" c) U! p- i' q7 P8 t, x
of early sexual development. His mother noticed8 k% w6 ^2 m' \" x. F6 |9 {. a2 z
light colored pubic hair development when he was
; x3 x; l( B6 l: w9 R1 S2 J# UFrom the 1Division of Pediatric Endocrinology, 2University of. b x5 Q) u9 X- L/ Y" P/ e0 V
South Alabama Medical Center, Mobile, Alabama.$ R5 L$ l6 C" D
Address correspondence to: Samar K. Bhowmick, MD, FACE,
4 }1 I5 U" C9 q, o" OProfessor of Pediatrics, University of South Alabama, College of" v4 ]2 e8 U) E( m! g
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;& s6 j; x" S% B; Q$ B5 U
e-mail: [email protected].2 t% X1 f5 q$ x2 ~ e$ r2 B/ V; X
about 6 to 7 months old, which progressively became
) x+ ~& Y- d* X; ^- E- D, X2 q- z8 {darker. She was also concerned about the enlarge-1 y# Y' V# q/ s3 O/ G6 c/ i. {3 c! d
ment of his penis and frequent erections. The child' _6 T: {/ ^: d/ B6 o% S. t$ O
was the product of a full-term normal delivery, with+ n7 P9 G1 @$ ~. J( T5 w
a birth weight of 7 lb 14 oz, and birth length of
9 ~2 T% d" @+ t7 b' q) p20 inches. He was breast-fed throughout the first year. P) _" C W a7 a$ f
of life and was still receiving breast milk along with
8 C6 I- l% b' b# e* qsolid food. He had no hospitalizations or surgery,' p+ `* p& V% F! b! L0 ~
and his psychosocial and psychomotor development
7 E- w0 E0 a0 h4 d8 O- u" gwas age appropriate.
- n, j: `1 r8 t C# M6 r/ qThe family history was remarkable for the father,
6 J5 Y/ `0 B6 vwho was diagnosed with hypothyroidism at age 16,+ ?& r3 A/ R: d$ N2 J9 M/ u
which was treated with thyroxine. The father’s
6 k- x: C8 i! @6 T( g- `7 r9 Fheight was 6 feet, and he went through a somewhat/ Y( K/ k8 [( e1 T
early puberty and had stopped growing by age 14.1 D; H T, U4 I0 w+ G+ @3 r! L; i
The father denied taking any other medication. The
5 x# Q& {$ v( A+ v# x2 L! s: G+ Wchild’s mother was in good health. Her menarche
8 E- V, ` b; o8 F! X8 r, f8 vwas at 11 years of age, and her height was at 5 feet2 z) F$ j0 l& v- R+ E0 i" G
5 inches. There was no other family history of pre-
' ~ _7 p2 V4 @) Fcocious sexual development in the first-degree rela-
( }1 ]1 O7 c7 x Htives. There were no siblings.
6 i* R; E" g. @# K: w$ Z3 k1 oPhysical Examination
3 R+ U9 N7 ]1 ]" e! ZThe physical examination revealed a very active,8 X, `6 O; [: e9 y: J8 p6 v2 w
playful, and healthy boy. The vital signs documented* V" R) _9 x4 n- [" V
a blood pressure of 85/50 mm Hg, his length was
# G8 M" |5 k% A9 ^) M/ z4 z6 k* T7 N90 cm (>97th percentile), and his weight was 14.4 kg
5 ~/ t% ]" m* w, w; l(also >97th percentile). The observed yearly growth
9 v. s# U3 }8 J% f1 ?! r) `# l4 wvelocity was 30 cm (12 inches). The examination of
7 ^. z. a, v4 y9 Y" h- O; ?the neck revealed no thyroid enlargement.* |& i% \" D: I" R* b A
The genitourinary examination was remarkable for
4 P) M( h6 u& S4 \, V) Senlargement of the penis, with a stretched length of: R0 c% L4 V1 o% h+ p: [! W+ ~, y
8 cm and a width of 2 cm. The glans penis was very well9 `+ K! C3 Q" y G
developed. The pubic hair was Tanner II, mostly around) V1 d! u7 d2 B* t B( N4 J( y
540
5 {. p: R) ]( N- H1 uat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from0 }0 e/ f+ f! S
the base of the phallus and was dark and curled. The
$ _8 m" j0 {& ?testicular volume was prepubertal at 2 mL each. W/ Y0 V. s) T2 E# ?
The skin was moist and smooth and somewhat, a h8 {/ u% d# o& _
oily. No axillary hair was noted. There were no* t; L r/ a+ ?4 @$ T+ f
abnormal skin pigmentations or café-au-lait spots.
- @, F+ ]5 f. M* ?! u! u: s6 r pNeurologic evaluation showed deep tendon reflex 2+& ]4 ^+ N3 B- b& X- n
bilateral and symmetrical. There was no suggestion$ u- W/ b) s4 W# i! c# l
of papilledema. l3 ~0 l% R' F6 [- [9 @3 y
Laboratory Evaluation5 w0 N8 _9 d( y& m3 A
The bone age was consistent with 28 months by
* k. ?7 C- c, j; W4 a. Kusing the standard of Greulich and Pyle at a chrono-6 s! p3 q/ A# p- W5 k7 ~
logic age of 16 months (advanced).5 Chromosomal
" G5 z5 \- n' K8 D0 k- u1 Z7 Ekaryotype was 46XY. The thyroid function test
: ?2 \/ c3 c& _/ z, R8 Yshowed a free T4 of 1.69 ng/dL, and thyroid stimu-
3 r/ x9 {: \" a$ mlating hormone level was 1.3 µIU/mL (both normal).; R- }. S; d9 w* F; B: L9 S! ?
The concentrations of serum electrolytes, blood- @" V* H9 R& ^# P) F- ~
urea nitrogen, creatinine, and calcium all were
; B C# `, k' [2 Ewithin normal range for his age. The concentration
1 p) u) Y( B2 e: N* e" c4 hof serum 17-hydroxyprogesterone was 16 ng/dL
+ p( G. y( g* Y! I' f7 ~" y(normal, 3 to 90 ng/dL), androstenedione was 20, M: Z5 ^. r S: T$ l0 z" X
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
* e8 d9 b# [0 S* v7 J/ nterone was 38 ng/dL (normal, 50 to 760 ng/dL),1 C! U: B8 l0 g8 ?
desoxycorticosterone was 4.3 ng/dL (normal, 7 to0 e! ^: U2 U4 U. T! e
49ng/dL), 11-desoxycortisol (specific compound S)
' L3 A. T% j. E2 ^, z9 b, N9 Mwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
+ X% b5 H1 B5 v p: [0 X9 mtisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
, a/ Q6 ^& U3 m# j2 itestosterone was 60 ng/dL (normal <3 to 10 ng/dL),# f# W w7 o% F9 M8 N" h9 q: O; ~
and β-human chorionic gonadotropin was less than8 `8 [6 L/ q* F+ O3 X: K
5 mIU/mL (normal <5 mIU/mL). Serum follicular
' v# Z" G" V3 M( Kstimulating hormone and leuteinizing hormone
) B o/ r0 | ]2 F% E* r7 Fconcentrations were less than 0.05 mIU/mL
; Q+ U) i0 k Y. p(prepubertal).5 S( |3 P" F+ `* q
The parents were notified about the laboratory. W3 y$ n K0 s
results and were informed that all of the tests were
1 J( [6 [2 V3 B9 ?normal except the testosterone level was high. The/ X G/ p8 J6 }& X4 u) g
follow-up visit was arranged within a few weeks to5 J7 O+ o) x* `. d
obtain testicular and abdominal sonograms; how-
7 L7 M$ h5 R1 h" F) b, C+ Xever, the family did not return for 4 months.
0 M8 Z& j4 X2 G6 ^0 `Physical examination at this time revealed that the
+ g2 G2 g7 Q( f# Vchild had grown 2.5 cm in 4 months and had gained
, n2 |3 f, Y) \. o4 G. R: Z1 ~2 kg of weight. Physical examination remained, m' r9 x3 k) m% r$ a
unchanged. Surprisingly, the pubic hair almost com-1 `+ [ ?* ?& l# N4 U
pletely disappeared except for a few vellous hairs at/ j' Y+ x5 t) k( Z X4 J8 j
the base of the phallus. Testicular volume was still 21 M/ I0 x! v& E8 ^& b S$ K& i5 y
mL, and the size of the penis remained unchanged.
4 z. @& D) ]3 q( nThe mother also said that the boy was no longer hav-
, h8 P6 V, k F% C7 S/ A! Eing frequent erections.3 o: y2 j+ C3 P
Both parents were again questioned about use of
, w# x+ m4 x/ K4 [! aany ointment/creams that they may have applied to
/ D- o. {/ K: h' x, ?, |5 Sthe child’s skin. This time the father admitted the
6 p1 k) s- u4 m. ?( h/ j! tTopical Testosterone Exposure / Bhowmick et al 5410 D/ D/ J9 A+ {
use of testosterone gel twice daily that he was apply-
* P0 h' _8 Y" z# K. Z4 C. ging over his own shoulders, chest, and back area for+ ^4 X V6 y2 {/ ^* T% [
a year. The father also revealed he was embarrassed6 e' O$ U: A9 }. ~2 U) i
to disclose that he was using a testosterone gel pre-# s6 z) }- j- N- B$ [ k
scribed by his family physician for decreased libido
" w6 N; R" R6 I9 f7 k) psecondary to depression.% @2 t2 Q* ]; Y% w/ C
The child slept in the same bed with parents.' x$ t7 h0 V3 l E2 J
The father would hug the baby and hold him on his9 {3 b, q( U" \- {) C
chest for a considerable period of time, causing sig-0 i1 ?: _, M- c/ N% M
nificant bare skin contact between baby and father.4 {. `+ l L+ G4 d0 P0 X' N) B* x
The father also admitted that after the phone call,
; V: C1 [. d( L, p# a5 mwhen he learned the testosterone level in the baby
. }: o0 @, }5 B. q9 r- _( D$ X2 ~was high, he then read the product information3 b+ I1 Z7 B/ C- c
packet and concluded that it was most likely the rea-. f: {7 u F6 Q: A; r+ N1 n
son for the child’s virilization. At that time, they
* e& A1 L5 H7 c) U7 g% |decided to put the baby in a separate bed, and the
- v: t4 L& j+ f2 N" I$ q9 Nfather was not hugging him with bare skin and had, `' X, w! N1 Z! r4 r4 L" ^! R
been using protective clothing. A repeat testosterone, C: @ A8 Y9 n' I, }+ N
test was ordered, but the family did not go to the
, q8 @, [/ l. blaboratory to obtain the test.
1 g% k- M* D' p6 [+ ?Discussion: D }- `8 g* Q1 k$ Q
Precocious puberty in boys is defined as secondary
' b( u. B( F3 f# xsexual development before 9 years of age.1,4( T B& A; g3 s8 R# |
Precocious puberty is termed as central (true) when% H r% u$ f3 c5 l
it is caused by the premature activation of hypo-* V1 `$ { [& M! [* D4 t/ ~! S
thalamic pituitary gonadal axis. CPP is more com-, ]/ n" a9 e, j
mon in girls than in boys.1,3 Most boys with CPP
; |' d. I; K, `" lmay have a central nervous system lesion that is' g: Y" q- z0 p1 p1 Z! N/ |+ h
responsible for the early activation of the hypothal-9 z* y0 e3 M1 b& q" h/ }
amic pituitary gonadal axis.1-3 Thus, greater empha-
; P! d2 K5 g: o5 {6 \sis has been given to neuroradiologic imaging in4 {+ Y/ F5 M; w7 m
boys with precocious puberty. In addition to viril-: B% n: x, T7 A
ization, the clinical hallmark of CPP is the symmet-9 |! d! ~- b/ N1 E0 y
rical testicular growth secondary to stimulation by- Q9 x: s% O" X8 c; r1 F% s
gonadotropins.1,3
! n( u' h6 A/ ^2 C0 j/ g% D/ Q" ]Gonadotropin-independent peripheral preco-
1 o/ O5 m& l- Q- i$ [cious puberty in boys also results from inappropriate
1 E2 X5 g: P) C$ f: h3 `androgenic stimulation from either endogenous or' ~' D8 F" e, a9 i: f
exogenous sources, nonpituitary gonadotropin stim-
4 X# g' P/ n- |5 F8 b% ]ulation, and rare activating mutations.3 Virilizing1 z j' m( S' U1 _9 ^
congenital adrenal hyperplasia producing excessive) y$ W. I, D+ w; w" p
adrenal androgens is a common cause of precocious2 \7 b p: h4 G' v, l7 V
puberty in boys.3,4
) X( s4 ~7 q" D- DThe most common form of congenital adrenal4 V( _3 ~3 ? Y9 i2 g, k6 H) f7 ~
hyperplasia is the 21-hydroxylase enzyme deficiency.1 n% L( }+ }6 [- `% g
The 11-β hydroxylase deficiency may also result in
% g" {8 ^+ o8 \: L6 X% cexcessive adrenal androgen production, and rarely,/ y5 S8 d5 _& k7 j! |6 M T2 Y
an adrenal tumor may also cause adrenal androgen
# t! v( F- u# v6 ~ [( qexcess.1,3- E' ~; o6 R3 X1 y7 I8 U4 v
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from$ @% J0 x& H! {0 w) h* f3 p
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007$ E& t% L( x6 l6 t( W; ]
A unique entity of male-limited gonadotropin-6 {3 N$ {* s( Y$ M, i1 W( t
independent precocious puberty, which is also known
) B5 L4 g0 \# S1 Cas testotoxicosis, may cause precocious puberty at a1 B: H1 B; H1 s8 X" T" n' W; x
very young age. The physical findings in these boys7 R& c7 B2 f4 k8 z: A. o) q& j' n
with this disorder are full pubertal development,
5 t# v. q. A8 q% ?3 c# `! gincluding bilateral testicular growth, similar to boys
" P" [* } p" Y$ w b1 {1 T' cwith CPP. The gonadotropin levels in this disorder2 E, _% i5 g: x/ S" m9 d- r
are suppressed to prepubertal levels and do not show. D' ^7 ^* I0 a9 l; K: l- c
pubertal response of gonadotropin after gonadotropin-# ~$ e! I' g8 m
releasing hormone stimulation. This is a sex-linked
, ^0 e* t8 o: k& lautosomal dominant disorder that affects only- t' M- p) c/ I! } ^( V
males; therefore, other male members of the family
! W! S8 ?* @ D/ {& Umay have similar precocious puberty.3
3 t& R: K) r9 J+ [" F2 R" O m: PIn our patient, physical examination was incon-/ W6 l& P1 Y: K+ `: a! m
sistent with true precocious puberty since his testi-' t# o. K" H5 N
cles were prepubertal in size. However, testotoxicosis& f* _ w+ o% D7 `4 f& @3 F
was in the differential diagnosis because his father
( @8 Y( _; R5 o4 _# q/ q) _( z5 A; Nstarted puberty somewhat early, and occasionally,
$ D$ K. Z$ ]# {' Mtesticular enlargement is not that evident in the, e( a- s9 m+ x+ P, I/ M
beginning of this process.1 In the absence of a neg-
3 g" C: \5 h/ z" Fative initial history of androgen exposure, our
6 K& _5 K& I- K, k) Ubiggest concern was virilizing adrenal hyperplasia,
E. F% ^! Z/ X! P0 a B, S6 {either 21-hydroxylase deficiency or 11-β hydroxylase5 P9 E" ~2 ?" Q2 W4 }4 |1 L8 \- D
deficiency. Those diagnoses were excluded by find-
; M5 U) i+ N% a& ?% @* p3 Ling the normal level of adrenal steroids.
- a+ y! g( o: d" N- JThe diagnosis of exogenous androgens was strongly
* E3 A* T0 U0 I6 ]3 E8 {: zsuspected in a follow-up visit after 4 months because! S( R# `% l M- l. H! f; }+ T
the physical examination revealed the complete disap-4 _2 o8 q( d) B) i% e1 S2 F6 ^7 c
pearance of pubic hair, normal growth velocity, and
# `9 @3 B; b6 D% j* X3 bdecreased erections. The father admitted using a testos-, M; c0 O+ a! N
terone gel, which he concealed at first visit. He was
/ P' n3 T; P4 C1 Q% c/ zusing it rather frequently, twice a day. The Physicians’. |) k+ n( A* A/ ~
Desk Reference, or package insert of this product, gel or- u. _5 y) Q# P0 K* J# e; p# m
cream, cautions about dermal testosterone transfer to
. _: e) [5 D7 E: X- c" [unprotected females through direct skin exposure.
! C, f. g6 G$ C0 fSerum testosterone level was found to be 2 times the; V. f5 d$ }" q( Z+ w
baseline value in those females who were exposed to
! j0 D0 U5 q$ b( weven 15 minutes of direct skin contact with their male
' b- [$ p4 U# i% c3 @' y) r1 Ipartners.6 However, when a shirt covered the applica-
6 Y# d w' Z; w6 stion site, this testosterone transfer was prevented.+ M/ B4 e+ e. @/ o& i; k/ g
Our patient’s testosterone level was 60 ng/mL,6 f; W& b- }' Y' ]3 w4 t! P. K
which was clearly high. Some studies suggest that
- s' ^! N: M/ sdermal conversion of testosterone to dihydrotestos-! o5 y0 {. o5 |. u! r; U
terone, which is a more potent metabolite, is more
/ R p$ ~" `0 ^2 Q4 Vactive in young children exposed to testosterone9 O' B4 K Y8 d. Z/ w) d
exogenously7; however, we did not measure a dihy-+ H% }. x6 T! b: L& F+ x
drotestosterone level in our patient. In addition to U+ L: g; u8 [6 M. {2 _0 }. l
virilization, exposure to exogenous testosterone in
" e. c) X. U2 ^% D& r5 T2 Rchildren results in an increase in growth velocity and
5 J/ N# b9 B" I( l9 @2 ?/ m; _advanced bone age, as seen in our patient.
. @: b* t5 [ N5 r0 |8 bThe long-term effect of androgen exposure during
: }3 x# d t; i2 }early childhood on pubertal development and final
! f# f& [6 L1 z. `) W. Ladult height are not fully known and always remain
5 ?4 c' I' x: ?$ A; |5 u& G: n$ Ca concern. Children treated with short-term testos-
M! Q7 Z# l/ |1 w1 Vterone injection or topical androgen may exhibit some3 \; Z2 `& d* {! [3 X
acceleration of the skeletal maturation; however, after
' x. V7 S, H3 y# Ecessation of treatment, the rate of bone maturation
9 E3 Y% W8 H3 L5 W( zdecelerates and gradually returns to normal.8,9
4 [; T' u2 s5 ?( [ W8 UThere are conflicting reports and controversy* {- ^" C$ o0 L4 X6 _0 @
over the effect of early androgen exposure on adult
" U9 b( ]% y3 Dpenile length.10,11 Some reports suggest subnormal" f9 y: }8 v( ~3 P
adult penile length, apparently because of downreg-
" c$ b- Y1 P, R; e+ L" Fulation of androgen receptor number.10,12 However,$ O2 w( `5 F1 i F" [
Sutherland et al13 did not find a correlation between
- E1 W2 P$ ?; f6 D) R& X8 vchildhood testosterone exposure and reduced adult
5 z5 T! F9 K, d7 tpenile length in clinical studies.
1 }: v0 g6 c. ZNonetheless, we do not believe our patient is' A$ j v; }; E+ D- Q/ @9 ]
going to experience any of the untoward effects from
) }6 r9 J2 @4 B0 S) t2 Xtestosterone exposure as mentioned earlier because
' c6 D; T2 P0 M& @1 a+ Fthe exposure was not for a prolonged period of time.
( n4 G" n; s* t) u# x7 W) H9 nAlthough the bone age was advanced at the time of; A, G# l% U* j2 l* j: u( I
diagnosis, the child had a normal growth velocity at8 i+ g; d8 K. q; X
the follow-up visit. It is hoped that his final adult
1 X; z+ o- _3 cheight will not be affected.
: T, ~) s, Z$ h- j& Y1 |1 rAlthough rarely reported, the widespread avail-/ a) g4 b2 w Q5 z5 j/ N Y7 Z6 d
ability of androgen products in our society may
% W( F0 g' x2 C6 B5 P3 |* T, F5 Bindeed cause more virilization in male or female: Q8 p/ v- r! B E/ `
children than one would realize. Exposure to andro-" x$ {& i/ i8 E# t# `6 d
gen products must be considered and specific ques-
- N+ r2 Y! _% I4 V. Ktioning about the use of a testosterone product or
& |) x8 ^& f/ j0 l4 k9 ^1 Pgel should be asked of the family members during3 x: ^1 a' U: C- ]# \
the evaluation of any children who present with vir-
: l0 p. Y7 M3 O8 s; I- M6 E2 tilization or peripheral precocious puberty. The diag-
( A" s/ c$ l) ]% o2 G2 v- dnosis can be established by just a few tests and by) h1 }2 G, a2 e! K; ^) \/ g0 i
appropriate history. The inability to obtain such a: I' i. }& _) R4 J
history, or failure to ask the specific questions, may
+ l" S8 O) r) ~# gresult in extensive, unnecessary, and expensive
: U) j6 Z- Z" p$ b1 _/ Tinvestigation. The primary care physician should be& r Z, ~6 B( P: a u' T
aware of this fact, because most of these children: ^* C* F" Y% y5 I6 f+ v) |$ G
may initially present in their practice. The Physicians’
+ s: [( y9 J" y+ }5 D' @' QDesk Reference and package insert should also put a% p5 ~+ F! F4 o! V. B) T
warning about the virilizing effect on a male or7 a! I! t7 R$ @3 \
female child who might come in contact with some-
# ]5 H0 U3 s+ T0 h, P( c4 Kone using any of these products.
5 r, J3 @5 m+ Q7 I/ rReferences
3 t- ~4 a2 w4 q0 S1. Styne DM. The testes: disorder of sexual differentiation
1 l# |8 a- ]9 X, i' y0 g. u0 iand puberty in the male. In: Sperling MA, ed. Pediatric
; w$ |7 P0 f& h; gEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
0 Q! l: h$ z4 S1 ^, O" p0 b2002: 565-628.& Y' z+ o6 a, X. i" D" }9 j8 X+ M
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious; J4 T# a! p/ }2 l( v
puberty in children with tumours of the suprasellar pineal {+ \- ~5 v n8 e0 U1 R9 }
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
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areas: organic central precocious puberty. Acta Paediatr.3 Q& ^7 L B C2 c3 p3 j+ o' s
2001;90:751-756.
- |- q2 O6 [/ R& B: H& N3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed.
* ^% f# x. |- \# X+ ]Pediatric Endocrinology. 4th ed. New York, NY: Marcel
9 z R3 ^$ S( X! N4 b H' F2 v& WDekker Inc; 2003:211-238.: U6 R; g, x% p/ j. a7 ^) j
4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual: B6 d/ O$ M) a# d
development in a two-year-old boy induced by topical
7 [; W1 X" E6 y) u8 Y' g# lexposure to testosterone. Pediatrics. 1999;104:e23.
' Q" W! m c" |* r0 c8 G0 ]5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
- {0 u! C- Z6 L1 [) W# zSkeletal Development of the Hand and Wrist. 2nd ed.
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