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Sexual Precocity in a 16-Month-Old
: O5 ]9 h f" Z6 X# E% n% W: QBoy Induced by Indirect Topical
5 F c4 c. L* J5 GExposure to Testosterone: N8 n i. J4 m- ^
Samar K. Bhowmick, MD, FACE,1 Tracy Ricke, MD,2! B k0 o' _! Y
and Kenneth R. Rettig, MD1/ x. G9 q# x" |% |
Clinical Pediatrics& w- U( e$ x& E* |( J/ m+ L: n
Volume 46 Number 6
" B$ ~7 ?, ^5 Z O2 iJuly 2007 540-543
. y/ w& H3 R% B% J© 2007 Sage Publications- S" R/ s; H k C
10.1177/0009922806296651& E: T( x+ |2 u* N5 _
http://clp.sagepub.com4 B# E- J0 q0 B
hosted at- U, ]7 L+ Y8 N; j7 |0 v% Q
http://online.sagepub.com6 F4 H. D2 W5 j: ^" I
Precocious puberty in boys, central or peripheral,; F- H3 t0 a) t
is a significant concern for physicians. Central) F. [8 T- `* Q! x! O! ^! r9 Q
precocious puberty (CPP), which is mediated
6 r) H/ F, q1 ]4 Ithrough the hypothalamic pituitary gonadal axis, has2 o# ~9 `. ^2 u- g
a higher incidence of organic central nervous system
) ^+ a, r& |% Nlesions in boys.1,2 Virilization in boys, as manifested
3 t5 s& L/ k' o+ Hby enlargement of the penis, development of pubic9 t0 r5 _5 y) m3 i, v4 ^4 o, v6 M/ O
hair, and facial acne without enlargement of testi-
" y8 P5 V: U+ U6 H5 x4 Fcles, suggests peripheral or pseudopuberty.1-3 We) Y* J- z, x- t- z( T+ s
report a 16-month-old boy who presented with the
4 o# B0 Q2 q- r: i0 @4 l: |4 R: wenlargement of the phallus and pubic hair develop-" `4 c5 N+ K1 S9 {) j3 U0 R
ment without testicular enlargement, which was due
- l" V) o0 X, s( h5 R" nto the unintentional exposure to androgen gel used by; d+ W. i4 ?1 e! y, W" ~; G# k
the father. The family initially concealed this infor-: U' O( D% h- U$ z Q6 I8 e9 E
mation, resulting in an extensive work-up for this# S" \9 @( j# ^1 B; `( J3 J$ l
child. Given the widespread and easy availability of- B+ {2 v2 w% p; r ^
testosterone gel and cream, we believe this is proba-9 e8 n' L( N( @1 C* p
bly more common than the rare case report in the
+ x$ G W. G! q. mliterature.47 } t. ^, A6 y2 n8 D+ n! h( ?8 {+ @
Patient Report0 W9 T( ?7 i) u& j* \* d
A 16-month-old white child was referred to the' u, w$ N# i; @! |7 l2 P
endocrine clinic by his pediatrician with the concern" v$ H2 F/ g" q
of early sexual development. His mother noticed
7 k6 ]2 u& v$ Zlight colored pubic hair development when he was
2 E0 l! J9 j0 A0 G8 a, J! uFrom the 1Division of Pediatric Endocrinology, 2University of
& `3 S$ I; u0 N4 K$ F4 rSouth Alabama Medical Center, Mobile, Alabama.7 x8 y2 E% C8 q$ ]2 s" Z
Address correspondence to: Samar K. Bhowmick, MD, FACE,
8 ?+ s+ C( p" a* K+ J, P% nProfessor of Pediatrics, University of South Alabama, College of
- W G' T, C l4 @( dMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;$ O |$ C: n S% u5 A" X, W1 R
e-mail: [email protected].
5 F% r+ G+ [5 ]* Oabout 6 to 7 months old, which progressively became q) B1 v8 L6 c) b* i" t- O
darker. She was also concerned about the enlarge-, Y3 O$ b6 F9 z! x, {8 g3 p( F
ment of his penis and frequent erections. The child
& Z" {+ E- ], o2 c" n5 Dwas the product of a full-term normal delivery, with5 O! }* s g" {# V
a birth weight of 7 lb 14 oz, and birth length of! c5 p" X& A2 ]8 k) @) U
20 inches. He was breast-fed throughout the first year$ g7 z4 e) H( L; V
of life and was still receiving breast milk along with% Q* u: I. z# T7 g8 s! j; @( i
solid food. He had no hospitalizations or surgery,
$ W* Q+ x2 d/ B% aand his psychosocial and psychomotor development
3 l% p# {: J( c+ ^4 x. X. vwas age appropriate.
8 y/ `9 u9 h! QThe family history was remarkable for the father,
" G) T+ _4 H% l6 k& s6 k+ }who was diagnosed with hypothyroidism at age 16,$ ^' |& I# f8 }5 e% L7 P, c+ @3 H
which was treated with thyroxine. The father’s5 A7 a* X2 J; w0 E
height was 6 feet, and he went through a somewhat
) r) J0 {6 z. c7 R9 J/ P7 @, qearly puberty and had stopped growing by age 14.
) b5 B3 `. V8 n& t( XThe father denied taking any other medication. The
|: E9 j) C. T, n6 z C8 W9 M# uchild’s mother was in good health. Her menarche
5 y' U# C2 G! m$ {$ m/ awas at 11 years of age, and her height was at 5 feet7 b7 `4 N) P: H# A3 C
5 inches. There was no other family history of pre-# e7 d1 i9 M+ ~
cocious sexual development in the first-degree rela-
; d1 j) z B/ m' O& itives. There were no siblings.1 E- T3 Y) g# p8 W( d" s9 @
Physical Examination: H6 g/ L% |6 [/ i
The physical examination revealed a very active,
# t. e. i4 S. d& F; }playful, and healthy boy. The vital signs documented
1 _$ V2 w! ~* w# z7 J' }$ Fa blood pressure of 85/50 mm Hg, his length was6 ?# ~0 i F& L
90 cm (>97th percentile), and his weight was 14.4 kg
}0 a& B! U( c(also >97th percentile). The observed yearly growth. i- F3 V3 s2 W
velocity was 30 cm (12 inches). The examination of( ~& s, k9 g0 B. B. k) T' N
the neck revealed no thyroid enlargement.
7 B/ i# L" }" g+ Z, SThe genitourinary examination was remarkable for
% j, p$ C- a' C2 n( Benlargement of the penis, with a stretched length of9 i8 V. r9 I% H/ O' ^& I
8 cm and a width of 2 cm. The glans penis was very well+ x1 [- K* `/ s9 T3 x, l
developed. The pubic hair was Tanner II, mostly around
0 q/ R$ W6 n4 P540
; v. c6 d- U. e$ uat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from H$ f: J7 s( J' @# b" ^7 S# i
the base of the phallus and was dark and curled. The
$ X; f5 d; m m: M8 Wtesticular volume was prepubertal at 2 mL each.
0 }/ L w( B5 RThe skin was moist and smooth and somewhat
6 k4 _9 f* g' d, Y, O: T2 E, V1 _oily. No axillary hair was noted. There were no$ V1 i3 [0 F9 {0 f* E; n# K& s* y7 ]% c
abnormal skin pigmentations or café-au-lait spots.. Y3 S; w% D( Y: e- ^; t
Neurologic evaluation showed deep tendon reflex 2+3 ?/ V# e* A+ n
bilateral and symmetrical. There was no suggestion
2 ~% l3 X; k) K" y; U1 x# f$ K4 \! Lof papilledema.
9 D8 c) u- l7 Q' @: G5 vLaboratory Evaluation. x+ E9 K( R/ v# Q' P* z$ N& v
The bone age was consistent with 28 months by
' R+ k6 s' L* l) n' I6 kusing the standard of Greulich and Pyle at a chrono-: ~3 t8 {' M1 A$ n
logic age of 16 months (advanced).5 Chromosomal
F. u% T" k3 h: ckaryotype was 46XY. The thyroid function test
, y1 e3 ~# N a* Q- T4 |8 @showed a free T4 of 1.69 ng/dL, and thyroid stimu-
. O. R. |; E t3 E3 ^lating hormone level was 1.3 µIU/mL (both normal).
: t. f1 T5 O* r2 I' l5 ~, OThe concentrations of serum electrolytes, blood
. F8 g& ?4 P3 r Y8 t S0 nurea nitrogen, creatinine, and calcium all were
. l( C( h5 T/ R0 X. |% l# i% I9 Bwithin normal range for his age. The concentration
7 y I* q, m, i% ~+ nof serum 17-hydroxyprogesterone was 16 ng/dL
4 y- N2 O$ ^7 J(normal, 3 to 90 ng/dL), androstenedione was 203 f, v4 l2 x, ` Z: m" p' ]
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
' T' j2 ^) Z0 y4 v: V( `: T' ?4 jterone was 38 ng/dL (normal, 50 to 760 ng/dL),
1 l' q' A \" k+ Cdesoxycorticosterone was 4.3 ng/dL (normal, 7 to
, r i# v5 B4 ~, C; f! N& Z49ng/dL), 11-desoxycortisol (specific compound S)- t0 V2 s. \9 G3 F
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-3 X# r2 j, e5 V% e
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total7 M8 ]$ r8 B6 A9 Y' ^- |8 c
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
( W3 U9 r( { A2 yand β-human chorionic gonadotropin was less than% y1 d" Q% Y& d6 K/ A' @+ w0 Q
5 mIU/mL (normal <5 mIU/mL). Serum follicular* y' W& T" f8 b3 i U
stimulating hormone and leuteinizing hormone4 B4 }6 i0 i, z7 O: v6 ]
concentrations were less than 0.05 mIU/mL, P3 h! q" I& m
(prepubertal)., I2 m( o, {( u8 x- y
The parents were notified about the laboratory7 n, i; u) j3 `7 o
results and were informed that all of the tests were7 A# N% P2 c( s: P0 f. F9 n% _) m
normal except the testosterone level was high. The
9 f- F5 i3 v& g( K# g& S, Tfollow-up visit was arranged within a few weeks to9 @6 Z, W* K' i3 f$ F
obtain testicular and abdominal sonograms; how-9 z& u8 `6 b# Z# F& S5 H, L
ever, the family did not return for 4 months.
6 a) S5 y+ d( s. v& s6 NPhysical examination at this time revealed that the
0 O( h4 @+ W+ ^( @child had grown 2.5 cm in 4 months and had gained! @+ D" x& ~( R
2 kg of weight. Physical examination remained& L7 ~# h4 H5 p# P' S: x) m
unchanged. Surprisingly, the pubic hair almost com-* m& W8 _1 Q! h
pletely disappeared except for a few vellous hairs at6 `# G7 D( [$ H0 N3 V: C* `0 c
the base of the phallus. Testicular volume was still 22 E; w' x' b+ t6 U0 |; |7 i" E4 j
mL, and the size of the penis remained unchanged., G) _$ {( K* d( `! k2 |& x, H( \
The mother also said that the boy was no longer hav-
; r% k7 m8 x+ G/ s! I3 @0 P& T$ ling frequent erections.
$ e% Z: t9 j+ [Both parents were again questioned about use of
5 z$ g8 @' C& N7 S9 z d& i1 j8 |any ointment/creams that they may have applied to" P+ r/ ?; k2 m- t1 J
the child’s skin. This time the father admitted the
- ]* L, l- I) }0 n% ^: oTopical Testosterone Exposure / Bhowmick et al 541+ n0 Y5 V) E) t& D6 @/ X
use of testosterone gel twice daily that he was apply-
1 D P+ |! ]" ]! Eing over his own shoulders, chest, and back area for7 n0 R; ]9 A/ T2 ?
a year. The father also revealed he was embarrassed6 K- Y' t, _2 E
to disclose that he was using a testosterone gel pre-
5 ]' |* s0 ], s$ A% {% bscribed by his family physician for decreased libido1 p: m$ f' B9 G9 h6 |3 l
secondary to depression.
" H* s4 Z& [( T- p' ^5 w5 M! aThe child slept in the same bed with parents.
2 }0 m5 @. |: `/ h' MThe father would hug the baby and hold him on his9 o9 q9 k7 W6 g- D- ]$ q
chest for a considerable period of time, causing sig-. J M; s1 K8 d$ c% ]" e! W3 ^$ ]
nificant bare skin contact between baby and father.
; c# c$ r& B8 Q3 PThe father also admitted that after the phone call,% q# O: Z! ~) o+ d; Q
when he learned the testosterone level in the baby
4 a( |9 x1 j( m8 ]1 g4 Dwas high, he then read the product information% C1 W* ^5 \6 {/ \
packet and concluded that it was most likely the rea-3 ?9 v- o( `# ], J
son for the child’s virilization. At that time, they
0 i; @8 B7 i% H: odecided to put the baby in a separate bed, and the
N9 U! e6 z( n! S! ufather was not hugging him with bare skin and had: }( e& d) l6 [* u- p) B6 Y( {( k
been using protective clothing. A repeat testosterone
; H% D1 `/ {2 s/ I Dtest was ordered, but the family did not go to the
2 {. b( T7 n, g) d! F! rlaboratory to obtain the test.
3 _, _5 S9 w% j ?6 \Discussion
* z" T4 R5 P% b4 J! }& o2 f! m/ PPrecocious puberty in boys is defined as secondary
7 V1 A& q- M2 s# ?! f* ^' csexual development before 9 years of age.1,4 N. J; N' E7 F f
Precocious puberty is termed as central (true) when
( Z8 }; {& s S1 E1 ^) iit is caused by the premature activation of hypo-0 U0 o/ {& O5 n3 s+ i2 F
thalamic pituitary gonadal axis. CPP is more com-
% |. E( q( t0 m+ s' vmon in girls than in boys.1,3 Most boys with CPP
/ j! e6 |, }3 }; I# J% [may have a central nervous system lesion that is
! u0 p- A- v- a# w& w$ d. c6 q: ]responsible for the early activation of the hypothal-& ^3 k0 r/ b, b2 I* d( J: P
amic pituitary gonadal axis.1-3 Thus, greater empha-
" `$ u6 _4 t# G/ ^( {3 F: {. C) msis has been given to neuroradiologic imaging in
8 Y# _2 v P, y* v9 e( I$ sboys with precocious puberty. In addition to viril-- o" }4 K$ \6 x7 a- p! M1 s
ization, the clinical hallmark of CPP is the symmet-
) F3 D9 K& p: Q/ |/ ?1 {2 krical testicular growth secondary to stimulation by
0 A4 J2 I0 A# V! j0 ^: Hgonadotropins.1,3
9 \" ?$ I" i# w5 lGonadotropin-independent peripheral preco-
) P; {, O- q/ k: y2 ycious puberty in boys also results from inappropriate* y8 n+ g8 E& d' P' k+ {( g
androgenic stimulation from either endogenous or7 U7 G; `+ H D& A' X& L
exogenous sources, nonpituitary gonadotropin stim-
; M% L! J, H( I3 i, {; V6 O; @ulation, and rare activating mutations.3 Virilizing: F: ?% L- u" w5 u% z( b$ S
congenital adrenal hyperplasia producing excessive+ h( ^% C6 ~! y1 P
adrenal androgens is a common cause of precocious
' F8 L6 g0 F G, f c5 {4 ?puberty in boys.3,44 S6 v! W+ o6 Z2 F+ i- O
The most common form of congenital adrenal
( W9 X; n) s) j( W/ m/ j2 D5 Khyperplasia is the 21-hydroxylase enzyme deficiency.# t/ J+ r. G* X" c
The 11-β hydroxylase deficiency may also result in% N1 f6 N' k) t2 F
excessive adrenal androgen production, and rarely,* g4 h; v! K2 v( N8 a
an adrenal tumor may also cause adrenal androgen7 `2 n/ G* u. f
excess.1,30 p- f% l/ e' v! D/ H
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
1 Z: f) S8 q6 o, H w8 b1 m3 w542 Clinical Pediatrics / Vol. 46, No. 6, July 2007! [$ J7 S. j' ]( c. F
A unique entity of male-limited gonadotropin-
! _% P- B+ U: U. ~; B5 Sindependent precocious puberty, which is also known
& l \% y4 K! p' M3 cas testotoxicosis, may cause precocious puberty at a
- C3 o+ t) i7 \8 E: D& ^6 Zvery young age. The physical findings in these boys5 C" a1 [% d# t n
with this disorder are full pubertal development,
g# r. _" ^3 n2 {$ \including bilateral testicular growth, similar to boys
% h8 r- h& `0 A' x' b1 @with CPP. The gonadotropin levels in this disorder% p* p; |' s7 A- {+ t4 T
are suppressed to prepubertal levels and do not show
9 h" _. f3 }$ R5 T. x3 S( ]) npubertal response of gonadotropin after gonadotropin-! i2 y0 r" q" I) y+ K. b, O* k) `
releasing hormone stimulation. This is a sex-linked
! n: J( T2 ?' m' s5 p hautosomal dominant disorder that affects only# Z6 K) H' j/ E) q, l
males; therefore, other male members of the family
, c% V& Z9 B2 Lmay have similar precocious puberty.32 v+ V8 w, m4 n* a- i6 Z( y
In our patient, physical examination was incon-0 v6 g0 U; b) @+ {) {( {2 s
sistent with true precocious puberty since his testi-! T/ g" x9 y8 S K) ~4 _6 G5 b
cles were prepubertal in size. However, testotoxicosis1 a5 _& A" R7 e) j
was in the differential diagnosis because his father
( N) s8 @4 a8 D, }2 d lstarted puberty somewhat early, and occasionally,; ~. w% |& h; v/ k0 }% ~
testicular enlargement is not that evident in the
4 E: c, n" _" b! r! u6 o9 Hbeginning of this process.1 In the absence of a neg- `9 q0 Z/ l# V3 ~/ W# |
ative initial history of androgen exposure, our
7 Q5 S$ }+ W7 X$ D9 ?biggest concern was virilizing adrenal hyperplasia,
: r0 A; m( j# S. Y% h% |% V3 beither 21-hydroxylase deficiency or 11-β hydroxylase
+ C6 z8 M3 T/ U' w! M. }* a) Jdeficiency. Those diagnoses were excluded by find-
9 q B# q9 z' P3 ~2 K, ?ing the normal level of adrenal steroids.5 E- C5 A1 F( b
The diagnosis of exogenous androgens was strongly
8 e) f" [( A- c# ksuspected in a follow-up visit after 4 months because
1 I2 Z0 P" R W- m, mthe physical examination revealed the complete disap-2 `8 |2 ~. I; A& T0 m
pearance of pubic hair, normal growth velocity, and y3 A, k$ }& F$ F( U/ P
decreased erections. The father admitted using a testos-% l8 R3 S- e0 [ q* E+ F0 o
terone gel, which he concealed at first visit. He was7 D/ Q. s; a7 X
using it rather frequently, twice a day. The Physicians’
. N# Y5 C4 U: K# ~Desk Reference, or package insert of this product, gel or
+ f0 F; H) ~$ ^! _5 E+ ucream, cautions about dermal testosterone transfer to1 I2 r2 R- T4 \& a; } n
unprotected females through direct skin exposure.
$ q" ~4 O0 B) H6 e9 q8 |8 gSerum testosterone level was found to be 2 times the4 [9 H: ]7 H; b' g7 N
baseline value in those females who were exposed to
$ H# M/ M, ^9 V; T4 Q6 Geven 15 minutes of direct skin contact with their male# Z7 q8 W& d* G: s( g* f" k! T
partners.6 However, when a shirt covered the applica-
' {0 T- w% k5 k A, Z4 h* y! ction site, this testosterone transfer was prevented.2 A- |7 T6 F. U3 ^# k3 y
Our patient’s testosterone level was 60 ng/mL,
" U& |- B4 u) K$ \7 X# ]6 Ewhich was clearly high. Some studies suggest that
& @1 p6 H* d& bdermal conversion of testosterone to dihydrotestos-! }0 P& O- N+ }, M
terone, which is a more potent metabolite, is more) G: Y; q+ A: B& \
active in young children exposed to testosterone$ U: V3 J# A0 t7 d5 v, |. W
exogenously7; however, we did not measure a dihy-
2 M, M9 w* k6 [ n. Y) W+ y' Z3 c0 hdrotestosterone level in our patient. In addition to* |. j! l) _ ^+ ^: t# a
virilization, exposure to exogenous testosterone in
6 Y: B! l- B, l8 A mchildren results in an increase in growth velocity and7 P- q0 ^, W4 }# F% p% x
advanced bone age, as seen in our patient.
3 A7 D8 R' x. V6 u3 GThe long-term effect of androgen exposure during
6 X$ b9 ] O( G/ ?early childhood on pubertal development and final F8 p+ @8 |( b
adult height are not fully known and always remain3 s5 O7 ?+ g8 f
a concern. Children treated with short-term testos-
6 X: v; Y3 W' {terone injection or topical androgen may exhibit some* w; S6 @ ]& V* M" Q! o
acceleration of the skeletal maturation; however, after1 o z& L9 }7 ?. H& j) M1 i0 _$ d
cessation of treatment, the rate of bone maturation6 F3 W; _; r6 [+ a$ Y8 Q2 j
decelerates and gradually returns to normal.8,9
- }; L( m. I4 g7 n! eThere are conflicting reports and controversy& \5 P# P' t3 R( k
over the effect of early androgen exposure on adult0 T5 ?- u4 f' X
penile length.10,11 Some reports suggest subnormal
$ v# L6 X! F* n" m3 uadult penile length, apparently because of downreg-5 x* x6 f) s9 U* w
ulation of androgen receptor number.10,12 However,4 R: v* D- a1 o- d
Sutherland et al13 did not find a correlation between
7 f& w( I) e1 u7 kchildhood testosterone exposure and reduced adult
$ G+ N* z& b. r$ e, a ]penile length in clinical studies.. ]% B2 s/ H: n6 K' p, n
Nonetheless, we do not believe our patient is1 {2 C7 n7 D! K3 D
going to experience any of the untoward effects from8 |" Y, W* Z7 [ {
testosterone exposure as mentioned earlier because8 ] @ X+ R0 J0 g+ w9 o% I
the exposure was not for a prolonged period of time.' d8 c" b4 T% t
Although the bone age was advanced at the time of) t4 n T$ W* ?* n. G
diagnosis, the child had a normal growth velocity at) ^* {$ D: g' z9 E, \# {
the follow-up visit. It is hoped that his final adult5 x6 `7 V5 ? p4 P3 D0 {$ `
height will not be affected.
6 X( {( F6 _4 u; m4 UAlthough rarely reported, the widespread avail-
& x8 i: _ Y, d X, I$ zability of androgen products in our society may
3 k$ h6 B: V0 t4 o1 `% f; |indeed cause more virilization in male or female
) ~4 z8 x5 W) z9 ^children than one would realize. Exposure to andro-; l5 f/ a2 o3 P0 {0 H+ T ?+ k- ?! w
gen products must be considered and specific ques-
, s$ { d1 l5 { Q7 Ntioning about the use of a testosterone product or
5 ]/ _4 s! r; Bgel should be asked of the family members during$ ?; T g; G$ `
the evaluation of any children who present with vir-# U4 j' [0 v+ \
ilization or peripheral precocious puberty. The diag-2 `% U o( ^3 b5 s3 _: N! R3 P
nosis can be established by just a few tests and by3 w* T1 ~4 x/ h- G' _; a! Q1 m
appropriate history. The inability to obtain such a
I3 {7 V ^) l% khistory, or failure to ask the specific questions, may
4 G/ s; x8 X$ j( Uresult in extensive, unnecessary, and expensive$ ^( R' M, @6 I9 j j; o
investigation. The primary care physician should be; ~% V: c, E- i" r D" ?" g
aware of this fact, because most of these children- [& c) Q1 V9 ~+ E
may initially present in their practice. The Physicians’
[7 N: k) q; ~& [" z6 w! CDesk Reference and package insert should also put a
" C4 i9 K3 { Pwarning about the virilizing effect on a male or, `( `' L" e) E2 q- q( s3 L2 T
female child who might come in contact with some-
1 ^5 E% G$ @( ^% v1 \$ `& f' ?6 H: Aone using any of these products.
. O# h) r% [% d' O2 h8 n' _References6 M# P* O d% x
1. Styne DM. The testes: disorder of sexual differentiation
/ F( r! ^) V' Q4 xand puberty in the male. In: Sperling MA, ed. Pediatric
8 A% }* q5 p; _Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
+ M4 R5 i% L. E5 A, A2 |) U, f! G7 }6 `2002: 565-628.+ ?5 g& a1 W" {+ P, s4 j/ M! |! j. w
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious: H6 Z4 w9 j# C. X% N2 @! v
puberty in children with tumours of the suprasellar pineal |
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