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Sexual Precocity in a 16-Month-Old+ x- M- l2 f" o- [
Boy Induced by Indirect Topical7 y6 \) `6 v/ r& y# E
Exposure to Testosterone
|$ @3 z# U8 q% O' ESamar K. Bhowmick, MD, FACE,1 Tracy Ricke, MD,2
0 J* g2 ~+ E# ?, u5 s8 Jand Kenneth R. Rettig, MD1% X- B( c& L* G3 C
Clinical Pediatrics
) b6 c# e' J9 P9 qVolume 46 Number 6
, Z5 }/ r( s! b7 }/ x! J6 Y/ w; V! b/ h( x- ZJuly 2007 540-543
6 M+ K, ?/ K! V) u% M" Y# I© 2007 Sage Publications7 ~( w: E& P/ j7 Y2 O9 a0 y% N
10.1177/0009922806296651
( U" w9 l$ V) _. H/ U9 Qhttp://clp.sagepub.com
- X* R5 D) K @/ t4 mhosted at' ~. O; u' X# H I# f/ j
http://online.sagepub.com( G" s+ X0 K, ~
Precocious puberty in boys, central or peripheral,
! g1 _# |, p' e+ ?! [. Bis a significant concern for physicians. Central% E1 }2 f' m8 v
precocious puberty (CPP), which is mediated2 y' G( T& `1 d D
through the hypothalamic pituitary gonadal axis, has, B/ E4 {) c* Q W" G
a higher incidence of organic central nervous system
5 }0 E5 }% b/ ?/ I% [) {lesions in boys.1,2 Virilization in boys, as manifested2 O" a4 H/ Y Q: H) K# A# k
by enlargement of the penis, development of pubic: p# h. ~( Y( e/ V6 E P* W' U
hair, and facial acne without enlargement of testi- k) V8 R: G+ e# O
cles, suggests peripheral or pseudopuberty.1-3 We
, x" ~9 _5 _4 J8 k @* q+ Vreport a 16-month-old boy who presented with the: O: m! c7 f* }2 H6 j
enlargement of the phallus and pubic hair develop-( q$ z0 _9 B6 O- ^, t
ment without testicular enlargement, which was due
2 [' V9 ?& _% E, ~4 ^8 a7 {4 `to the unintentional exposure to androgen gel used by
1 ~' w8 t4 {1 Lthe father. The family initially concealed this infor-
- ?: I8 y& b& Nmation, resulting in an extensive work-up for this4 d1 U) b: B% l8 ~, g5 v8 x
child. Given the widespread and easy availability of* h/ a T6 ^6 f @
testosterone gel and cream, we believe this is proba-
- h9 K" p5 p8 B& Vbly more common than the rare case report in the
9 W5 _! k7 }+ |: ]$ z+ Yliterature.4
) b# _% L2 J- pPatient Report# b" V4 N0 }+ n* N# @3 }0 [
A 16-month-old white child was referred to the; c- T& J7 t. `; ^* Q
endocrine clinic by his pediatrician with the concern
. `: J- u( [' xof early sexual development. His mother noticed
3 i1 q* j d0 C: d4 ^light colored pubic hair development when he was+ r* b5 @0 n) M8 h9 a9 w7 Q! X# r
From the 1Division of Pediatric Endocrinology, 2University of
5 x( l/ u' K/ r5 _% RSouth Alabama Medical Center, Mobile, Alabama.
6 O5 O: p6 k5 k* V: GAddress correspondence to: Samar K. Bhowmick, MD, FACE,% M1 \! o9 o- `. T! S3 K( i
Professor of Pediatrics, University of South Alabama, College of" a# L. n0 y, L* E
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
( H c- w; Y& [* M4 We-mail: [email protected].
: q: ^; I7 s8 K9 Q$ gabout 6 to 7 months old, which progressively became6 t6 T: ]1 T& X/ a `
darker. She was also concerned about the enlarge-# H" u: k5 g; n& R5 }# O3 N) _1 w# v: B
ment of his penis and frequent erections. The child2 j( m8 B+ e8 z9 [2 w! u
was the product of a full-term normal delivery, with
9 y8 g& ]: Y1 r5 q& Z$ ~" Na birth weight of 7 lb 14 oz, and birth length of
- J3 z! E0 x) K+ f% B20 inches. He was breast-fed throughout the first year' d: F+ {3 c3 Q* z) P
of life and was still receiving breast milk along with
: o' \& @# s1 l6 @9 Z+ }" Y5 vsolid food. He had no hospitalizations or surgery,1 ^1 w' i% N/ b9 w
and his psychosocial and psychomotor development
5 [! u8 A+ x$ Q3 d% bwas age appropriate.2 }* P3 B9 y6 ]1 t
The family history was remarkable for the father,: K- `! ^( F7 N
who was diagnosed with hypothyroidism at age 16,/ e; g- ~" ^4 ~+ {+ P- r
which was treated with thyroxine. The father’s2 T# ] z- N; q% d3 }# _7 g
height was 6 feet, and he went through a somewhat4 `$ `+ i8 k* k8 _- Y J; U
early puberty and had stopped growing by age 14.
. ~- p _9 B: S+ ~5 e2 WThe father denied taking any other medication. The# r, r- M5 y: M: }
child’s mother was in good health. Her menarche
% Z" {' [+ m7 o; d+ m k8 Kwas at 11 years of age, and her height was at 5 feet
/ Y9 a1 z) F3 E) R4 A' y& n) H5 inches. There was no other family history of pre-0 m0 Y4 r3 t* k3 e z; h$ i
cocious sexual development in the first-degree rela-
! E, f4 a9 H& E. d4 s. ptives. There were no siblings.0 \- G7 M* q. S9 C8 O
Physical Examination
9 B; _! m* R* nThe physical examination revealed a very active,
) u* a3 l7 I- r8 o5 j6 m, oplayful, and healthy boy. The vital signs documented
0 }; E& j/ _% F# A* Qa blood pressure of 85/50 mm Hg, his length was B4 C' I l4 y3 S' C; o w* l
90 cm (>97th percentile), and his weight was 14.4 kg
3 g f/ b, R/ _ U) N9 p0 A(also >97th percentile). The observed yearly growth( ~5 t% G9 {# c% N- T( U }5 E
velocity was 30 cm (12 inches). The examination of
% m8 \6 G2 w) a% \- _the neck revealed no thyroid enlargement.& F% i9 R" x6 \; T$ p6 x i
The genitourinary examination was remarkable for
* {4 V: Q. r: s* Z. l3 m, Lenlargement of the penis, with a stretched length of4 T: I7 r6 D% _+ y0 n, E$ |
8 cm and a width of 2 cm. The glans penis was very well/ ~0 N5 Y8 R" j- J c: u
developed. The pubic hair was Tanner II, mostly around
& ^* J+ y* R& Z5409 y+ }- L2 f k# A9 N! i
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from( G" J* A i. o0 s; L' [
the base of the phallus and was dark and curled. The
5 J1 d/ A/ ]: {5 Ztesticular volume was prepubertal at 2 mL each.
0 w$ f3 V( n+ X+ p) x) r" I5 iThe skin was moist and smooth and somewhat
2 i7 V: b, [( ~6 r" L) l3 l) joily. No axillary hair was noted. There were no+ F: r6 }4 u( {6 a, `4 J: |3 D
abnormal skin pigmentations or café-au-lait spots.
; k( E D, q7 L# ?5 S9 u) a9 WNeurologic evaluation showed deep tendon reflex 2+
' F' C/ s0 C( N9 r" ?6 y. ~& hbilateral and symmetrical. There was no suggestion
- i9 E1 c0 o7 E' Xof papilledema.7 V3 `/ f0 U: q. U& w3 B
Laboratory Evaluation0 {; E5 x. L, ]/ w3 i
The bone age was consistent with 28 months by7 c2 b4 W2 B, T4 l2 ]
using the standard of Greulich and Pyle at a chrono-
* W8 T3 x7 `" c1 e _3 hlogic age of 16 months (advanced).5 Chromosomal
# {5 [! v- Z5 L1 m3 Gkaryotype was 46XY. The thyroid function test9 }+ U5 {% d) C1 p8 z3 m* ?
showed a free T4 of 1.69 ng/dL, and thyroid stimu-! U( B- i: [4 w# b6 @& ~
lating hormone level was 1.3 µIU/mL (both normal).8 n, Q7 ~' b/ _2 S8 L$ p
The concentrations of serum electrolytes, blood
+ V+ ^' ?3 w2 A+ \& U' a" `urea nitrogen, creatinine, and calcium all were9 w' I3 Z- i0 Z7 S0 a# H ~. _8 z
within normal range for his age. The concentration: w% _4 ^" u% P: h' k$ y% j* W
of serum 17-hydroxyprogesterone was 16 ng/dL
; s. r$ C: W! u8 w' [( A" U0 V(normal, 3 to 90 ng/dL), androstenedione was 20- p. N1 }- q8 l1 v# `
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-( ]" E4 l5 z9 @7 I- E6 G3 h: l
terone was 38 ng/dL (normal, 50 to 760 ng/dL),
0 P2 m* T/ f% edesoxycorticosterone was 4.3 ng/dL (normal, 7 to7 E ^ U% E; K: o
49ng/dL), 11-desoxycortisol (specific compound S)8 m4 j( C9 ~0 E, p! y" y* b( V
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
* O7 |6 d9 _% Utisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total' R, `5 O3 q, ^2 R- A
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),; z1 M: c( ~+ }* W- j- N
and β-human chorionic gonadotropin was less than. i% I+ d1 ^4 r8 L# P
5 mIU/mL (normal <5 mIU/mL). Serum follicular) P7 r6 T9 M! e& B
stimulating hormone and leuteinizing hormone/ f/ w J, u& n
concentrations were less than 0.05 mIU/mL
* t( K, d% q6 o! l(prepubertal)./ L! j) h, m6 j# H& L
The parents were notified about the laboratory
- }; x8 H1 V4 G$ o R: P/ z% kresults and were informed that all of the tests were
4 P+ L9 v) Q0 ^9 [3 e% @* Bnormal except the testosterone level was high. The) T: ^0 m2 I0 h
follow-up visit was arranged within a few weeks to
3 H% b3 ?7 J$ ?0 J" [& f" |obtain testicular and abdominal sonograms; how-+ h( |$ Y" Q2 Q
ever, the family did not return for 4 months.# c" D" t- X' n6 _( N' ]
Physical examination at this time revealed that the
/ ^+ Y/ Z# ~# B* o+ l/ v0 ~- Hchild had grown 2.5 cm in 4 months and had gained7 z& g: i2 d$ [+ s9 }
2 kg of weight. Physical examination remained
# W' M# B$ g( E) s( u) S. f$ L7 junchanged. Surprisingly, the pubic hair almost com-
8 h: t% h7 Z3 [) U1 lpletely disappeared except for a few vellous hairs at/ C; H+ [+ a0 O9 g! c
the base of the phallus. Testicular volume was still 2
5 ^0 a! g% _" G+ mmL, and the size of the penis remained unchanged.
& h# i# a- f7 C4 ~$ AThe mother also said that the boy was no longer hav-
- J% d$ s, @( ?$ D- Fing frequent erections.
8 J; L- ?) N5 O) x/ T/ RBoth parents were again questioned about use of
, D9 I: i2 F, q+ n& E- Tany ointment/creams that they may have applied to" M' l# J! I+ D1 k
the child’s skin. This time the father admitted the% F7 `8 }* [ F- l
Topical Testosterone Exposure / Bhowmick et al 541
, j+ ~2 R2 @3 v% |; `use of testosterone gel twice daily that he was apply-" g) u i H5 `2 g5 r2 L* @
ing over his own shoulders, chest, and back area for4 [" s! X8 n" l) P( J. x# i
a year. The father also revealed he was embarrassed
0 a4 u J% [3 T: V- E6 Vto disclose that he was using a testosterone gel pre-
7 m' a2 w3 d. s' tscribed by his family physician for decreased libido
) t* o$ K X0 p( I! K/ Hsecondary to depression.3 D" m" Y! n: l6 H, Y7 V* p5 o* H
The child slept in the same bed with parents. w6 H% H2 [9 U( q
The father would hug the baby and hold him on his
% Z K* ~' R, h3 Qchest for a considerable period of time, causing sig-5 w( Z6 ^$ H& n$ M
nificant bare skin contact between baby and father.
, y0 M3 |! V1 mThe father also admitted that after the phone call,
g( t6 j4 Q8 O, Pwhen he learned the testosterone level in the baby
0 U, `, s% @0 H) ]( b" Hwas high, he then read the product information6 o$ H+ z& b# z& Y
packet and concluded that it was most likely the rea-% G* y& S+ z N) k: m6 F6 O. U: l
son for the child’s virilization. At that time, they7 ?. S% {$ K1 S a& G) e, Q
decided to put the baby in a separate bed, and the/ N/ ]) f9 _6 R i3 E
father was not hugging him with bare skin and had W9 |. l' `7 V$ h" C* O/ v* ]( |
been using protective clothing. A repeat testosterone$ e ]( ?) C: Z0 q
test was ordered, but the family did not go to the) \9 Z' N0 b, C5 m8 T$ H
laboratory to obtain the test.' X! }& y% B; ^8 [7 ]1 o+ g L
Discussion
' L. \2 ?2 ^" _Precocious puberty in boys is defined as secondary1 J: P( a2 t4 x( t
sexual development before 9 years of age.1,43 l; H) K% s U
Precocious puberty is termed as central (true) when c+ f7 ~6 C" `6 W& i, N
it is caused by the premature activation of hypo-2 X" j" u& G- s
thalamic pituitary gonadal axis. CPP is more com-4 v, R- d- j4 V1 X6 [- A
mon in girls than in boys.1,3 Most boys with CPP6 m5 i* D' t" y9 ?
may have a central nervous system lesion that is' F/ m) K( k3 Q/ \5 S4 q
responsible for the early activation of the hypothal-% w1 u8 |; Y* T6 u
amic pituitary gonadal axis.1-3 Thus, greater empha-
2 K5 Q- b, X2 g5 fsis has been given to neuroradiologic imaging in
- O/ ]* x6 t8 ]* C; _boys with precocious puberty. In addition to viril-
^8 `4 ]7 ^& s/ o" p' A% nization, the clinical hallmark of CPP is the symmet-
+ U: B; I( J5 i7 ^' d4 g8 \rical testicular growth secondary to stimulation by
/ t; V# ?9 j- ]/ M% J! J5 _gonadotropins.1,3
$ i! O7 y! o) `# `Gonadotropin-independent peripheral preco-- C9 M! t+ X% j6 t' a" K
cious puberty in boys also results from inappropriate# V. P8 j' B' m% ^! Q6 A
androgenic stimulation from either endogenous or
; _& Q5 r. d, S# L0 h0 h# Gexogenous sources, nonpituitary gonadotropin stim-
& M6 \# d/ p" E/ s; j8 [ {ulation, and rare activating mutations.3 Virilizing8 b% \* o. ]. {+ _1 B+ ~+ @: P! E
congenital adrenal hyperplasia producing excessive
, j# C6 [! \/ _% g- Ladrenal androgens is a common cause of precocious
- r' R# _: N7 [1 n5 F% b' Fpuberty in boys.3,4
# G6 w) Z; h& L0 i& RThe most common form of congenital adrenal$ W: D( ^6 g/ `! l+ X) Z+ R
hyperplasia is the 21-hydroxylase enzyme deficiency.
. [% O% @" o1 S, }! oThe 11-β hydroxylase deficiency may also result in
0 }% U6 A! u, a5 S8 }3 Xexcessive adrenal androgen production, and rarely,
& M" U, ]# g) v6 u" yan adrenal tumor may also cause adrenal androgen1 I4 @( F2 f6 M) S/ D5 e" U. \" p
excess.1,3
2 x% [1 ^# |& e8 l }at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
4 t: @" z5 ], |9 Z542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
; y t7 H: i- w: JA unique entity of male-limited gonadotropin-% W- A) J/ H" _; F
independent precocious puberty, which is also known% c/ F0 I* {4 w# J- p
as testotoxicosis, may cause precocious puberty at a# }( I. M9 J- \# T* j
very young age. The physical findings in these boys
, r; |# Y, L% Kwith this disorder are full pubertal development,, X8 U1 U, P- U# t
including bilateral testicular growth, similar to boys7 h5 m' O! U. @) a ?. I$ [8 H+ D
with CPP. The gonadotropin levels in this disorder
, ^- @3 R& p, {8 {are suppressed to prepubertal levels and do not show
& @! a4 T' c# d1 F \1 B+ C) D7 dpubertal response of gonadotropin after gonadotropin-. B- M* i/ x4 ]8 A
releasing hormone stimulation. This is a sex-linked0 A8 X/ t8 z6 e7 N! B+ V6 }
autosomal dominant disorder that affects only" n q8 o3 h6 ~2 Z. ~. M1 a0 Z
males; therefore, other male members of the family! ^2 t4 A4 g+ `/ e5 B
may have similar precocious puberty.3* p9 Q y2 N% u8 O+ y
In our patient, physical examination was incon-2 R1 S& [) Z8 _9 j0 X: ]3 E
sistent with true precocious puberty since his testi-) t1 ]( X3 r( k3 _4 b
cles were prepubertal in size. However, testotoxicosis% S r, J3 ?; }; p5 t/ a$ O
was in the differential diagnosis because his father
% [" z8 X# E; M; K5 Z" {started puberty somewhat early, and occasionally,- j2 L) M/ U1 p
testicular enlargement is not that evident in the
7 B+ j+ m" a2 ? v4 pbeginning of this process.1 In the absence of a neg-
% m3 j$ K$ g4 r1 r B z6 L {ative initial history of androgen exposure, our
" l( C: C2 N- O. p0 M% U v+ _' pbiggest concern was virilizing adrenal hyperplasia,& P' a* I& i9 Y6 W) D, r
either 21-hydroxylase deficiency or 11-β hydroxylase5 l3 J S6 ^5 E" F+ K
deficiency. Those diagnoses were excluded by find-
$ Q; l9 A) ]% {( W C/ Ring the normal level of adrenal steroids." X2 o6 \3 ~- x2 e, B' H
The diagnosis of exogenous androgens was strongly
" Y( E/ a9 J1 ]2 e0 h- M& d: c* Lsuspected in a follow-up visit after 4 months because
4 ?- d; k) O" h3 tthe physical examination revealed the complete disap-# [1 u: G! {6 j K+ o
pearance of pubic hair, normal growth velocity, and5 z: h/ `/ `% }& V
decreased erections. The father admitted using a testos-( ]6 ?8 v; i# z; T
terone gel, which he concealed at first visit. He was& ]" W, |& P/ I1 u& g8 G
using it rather frequently, twice a day. The Physicians’
& D" N4 t: l; F0 s q' ZDesk Reference, or package insert of this product, gel or
" u& `) x/ C! I% }) b2 D) _cream, cautions about dermal testosterone transfer to; c% f+ a9 E* S f' C8 h
unprotected females through direct skin exposure.
% V. X/ _$ u* A1 o$ zSerum testosterone level was found to be 2 times the3 j* o! ~( G7 i8 w2 @- g9 j
baseline value in those females who were exposed to
s$ k0 L) T0 a; m/ Qeven 15 minutes of direct skin contact with their male
4 n9 p8 U# D) l2 u8 ^/ T" _partners.6 However, when a shirt covered the applica-* A. Q& l8 r) O8 B" \
tion site, this testosterone transfer was prevented.
$ Q* w$ j0 l3 }. {+ w4 eOur patient’s testosterone level was 60 ng/mL,
7 u( C) |( f, j4 V) rwhich was clearly high. Some studies suggest that
8 z3 e4 A6 r- w' q& N. `/ |dermal conversion of testosterone to dihydrotestos-
4 y! b4 p( Y+ \. u1 N' p5 x3 F- Y3 [terone, which is a more potent metabolite, is more+ S: e, F( w% G' V$ L7 u& d2 k( W
active in young children exposed to testosterone0 v" O7 `% i- L; O+ R% |
exogenously7; however, we did not measure a dihy-
r2 g* U* V& e2 pdrotestosterone level in our patient. In addition to6 R: h- `3 B* J S
virilization, exposure to exogenous testosterone in
7 q3 Z- H: h# }9 e. Zchildren results in an increase in growth velocity and" `/ k) D4 ~% a
advanced bone age, as seen in our patient.
+ F3 k3 {, Z, L4 i2 t d* wThe long-term effect of androgen exposure during
/ n, H( X9 }7 b* E9 r/ Tearly childhood on pubertal development and final
2 a+ ?( a& W4 u0 T' Cadult height are not fully known and always remain
K2 U: Q5 \( c. `) \a concern. Children treated with short-term testos-
A! l/ Y! c( E6 u+ u+ [terone injection or topical androgen may exhibit some
* r* E5 l$ g6 c5 vacceleration of the skeletal maturation; however, after
N! i/ b6 _' icessation of treatment, the rate of bone maturation
: j! [7 l! T" J$ m& w4 I6 Ldecelerates and gradually returns to normal.8,9
; k: n! {/ e6 f' C9 {- x4 u- |There are conflicting reports and controversy. ^, z* `+ e s. c
over the effect of early androgen exposure on adult
& f3 Z- a6 B: h1 s/ Ppenile length.10,11 Some reports suggest subnormal1 x) ~3 [* z3 O4 r' _
adult penile length, apparently because of downreg-
* D, P& |- S% X; @, {3 m1 Mulation of androgen receptor number.10,12 However,5 g. w' y2 A& m
Sutherland et al13 did not find a correlation between# F3 F( `& r* [3 O6 m' s
childhood testosterone exposure and reduced adult
' g* b4 z8 j0 d# ^' _2 p2 Qpenile length in clinical studies.
' D {+ W- M. }! y" C. k+ \Nonetheless, we do not believe our patient is" o1 V) U+ w, q
going to experience any of the untoward effects from
3 ~# [* a2 K" Z% s: atestosterone exposure as mentioned earlier because
$ x, [- ~- O+ I* w, A. wthe exposure was not for a prolonged period of time.- Q; I5 I# V3 J0 w
Although the bone age was advanced at the time of! u- m2 ?* p! a: a1 I% D# o
diagnosis, the child had a normal growth velocity at
6 ^2 ]0 E' w3 @5 Dthe follow-up visit. It is hoped that his final adult0 L/ X8 F5 B- i! @: ~
height will not be affected.
- _. B" \0 K5 z( ^5 c6 B2 |) ^Although rarely reported, the widespread avail-+ Z3 F# d# q$ ^
ability of androgen products in our society may1 i5 W% J4 w6 A/ W6 C/ j
indeed cause more virilization in male or female
+ C) z9 w) u3 H& n/ dchildren than one would realize. Exposure to andro-* B, b2 g4 g5 v" J
gen products must be considered and specific ques-
; C/ u; k& X, u+ d+ V5 e" ^" ~" d' qtioning about the use of a testosterone product or
6 `' ?8 t E. v& vgel should be asked of the family members during2 X/ `8 D. R$ @
the evaluation of any children who present with vir-
3 ~( G* S, Q* |# Z2 F6 [# E/ Q lilization or peripheral precocious puberty. The diag-
% s3 r8 |9 S. i) J! Vnosis can be established by just a few tests and by
) q# S" Y8 ?5 r7 h2 a$ ^appropriate history. The inability to obtain such a
5 S2 X3 _9 N# bhistory, or failure to ask the specific questions, may
# `) F. W6 Y) F+ P, |result in extensive, unnecessary, and expensive6 `9 y+ l; Y" c2 B5 }
investigation. The primary care physician should be
, G- {8 f/ |% [* u0 a1 p8 ?aware of this fact, because most of these children5 [- d" Z8 ?" A7 a. b# i
may initially present in their practice. The Physicians’7 T. `9 ^ Z3 J7 m% m7 j' j
Desk Reference and package insert should also put a
, H d2 b; y- \* qwarning about the virilizing effect on a male or* f3 T4 @0 V) |, P+ H
female child who might come in contact with some-
; d! h, P! S9 @# n" [5 |0 \one using any of these products.
3 h. g% r1 p9 YReferences% f) S3 Z0 k& }7 [9 E
1. Styne DM. The testes: disorder of sexual differentiation8 L( K: x; {; D2 G* m% _
and puberty in the male. In: Sperling MA, ed. Pediatric$ q& s0 ^6 q& G$ o
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;/ M K" ~) j0 ?* ^8 g- Z# E
2002: 565-628.
6 [5 M0 ` X6 M( m% ]/ t7 f2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious4 d3 d( C, G9 t
puberty in children with tumours of the suprasellar pineal |
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