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Sexual Precocity in a 16-Month-Old% C6 ?, I) Z6 t0 \( R6 H K
Boy Induced by Indirect Topical- Z9 s$ _" s2 B
Exposure to Testosterone
, a# h5 }: _% W! _6 t9 A/ V5 Z! USamar K. Bhowmick, MD, FACE,1 Tracy Ricke, MD,2
- ?1 @% ]% r* Xand Kenneth R. Rettig, MD1( ?* Z: w; e2 U' y) O& X4 j2 E1 `
Clinical Pediatrics# [; I/ C: w# ~+ u9 ~. L* x
Volume 46 Number 6
3 e& R2 ^; x9 O1 lJuly 2007 540-543% }$ O8 U5 E( {$ W
© 2007 Sage Publications' @. \+ q3 B# p* r
10.1177/0009922806296651; S* d3 V0 Y2 W4 R4 u# v( X
http://clp.sagepub.com6 m2 k; c: Y7 P& j8 y
hosted at, H# h) | `/ G6 S+ e" ^) A! _; t
http://online.sagepub.com% y; p- M0 ~' B7 h* U
Precocious puberty in boys, central or peripheral,7 Y/ S$ `7 Y# R$ U* l) A
is a significant concern for physicians. Central
" N9 l% @( `( K7 r8 a" ?" wprecocious puberty (CPP), which is mediated
+ z3 m7 _5 b9 a( ithrough the hypothalamic pituitary gonadal axis, has" @) t4 x. e) ~+ ?4 U1 \
a higher incidence of organic central nervous system
+ `0 P# F6 o, Zlesions in boys.1,2 Virilization in boys, as manifested8 m5 M" C8 {1 j. K6 U
by enlargement of the penis, development of pubic7 i* |+ U" j% |4 s7 ~1 K
hair, and facial acne without enlargement of testi-5 `4 R4 c( A/ J0 F( z! ~0 v
cles, suggests peripheral or pseudopuberty.1-3 We
3 B# J9 M# }2 J# h3 n+ J: n6 greport a 16-month-old boy who presented with the
5 b& x7 H; v( e7 s& A( I4 penlargement of the phallus and pubic hair develop-( b/ U5 z B7 Q3 i
ment without testicular enlargement, which was due% J m& ]; u) h o; r. C' s7 ~
to the unintentional exposure to androgen gel used by9 g, B* P$ M0 i
the father. The family initially concealed this infor-
4 x5 r1 L4 O! }6 j0 u. lmation, resulting in an extensive work-up for this
6 A. z0 b6 X, N6 c( m! U# f/ `child. Given the widespread and easy availability of/ J5 ], Y, V7 P) Q$ A4 s& C
testosterone gel and cream, we believe this is proba-
3 {9 v- ]+ K/ O$ H& n6 i# A: [bly more common than the rare case report in the
/ F3 z$ b( Q$ rliterature.4, f; r: L1 H# Q1 b1 X8 T3 \5 T/ |( r
Patient Report0 X: e& S! B d) G( `
A 16-month-old white child was referred to the
' e8 I* @; O* Z. Vendocrine clinic by his pediatrician with the concern- W3 {( L* L) t5 i0 h! X3 Y! ^8 j
of early sexual development. His mother noticed
' n* v( y$ }, {, {/ \) Qlight colored pubic hair development when he was
; V' P1 y% i' o) o& [1 }; ZFrom the 1Division of Pediatric Endocrinology, 2University of
+ J6 \* x% b7 [, v+ {1 ~South Alabama Medical Center, Mobile, Alabama.5 _: ?* v& S; ^; H# \% J
Address correspondence to: Samar K. Bhowmick, MD, FACE,/ v4 B% O F. V, T" U, B
Professor of Pediatrics, University of South Alabama, College of
6 O, L- W( v2 t6 v4 W! NMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;- E. E! F" V9 n! c+ q
e-mail: [email protected].# q$ b2 h5 t. w
about 6 to 7 months old, which progressively became
# [- [- l2 F) Y: mdarker. She was also concerned about the enlarge-1 r; t! i0 g, x# C; I8 Z" y4 r2 V
ment of his penis and frequent erections. The child/ C8 p) ?9 s6 o/ a7 e! W! m/ _
was the product of a full-term normal delivery, with9 p9 s& N3 i& Q1 r! F
a birth weight of 7 lb 14 oz, and birth length of" E+ a1 i- |' D w4 t3 Q
20 inches. He was breast-fed throughout the first year
" d' O' i( h# Y$ Qof life and was still receiving breast milk along with& [3 W9 J" G6 _
solid food. He had no hospitalizations or surgery,6 h0 i+ \* {8 o) F# U/ C# Q8 \& A
and his psychosocial and psychomotor development
( O4 q3 f! S5 cwas age appropriate.
6 ?* s) a: ^6 Q& GThe family history was remarkable for the father,5 c n( D# _9 T9 n+ Z5 q4 h5 B; t$ F
who was diagnosed with hypothyroidism at age 16, q2 ^! Y; S4 P6 P9 H4 u
which was treated with thyroxine. The father’s% i, T6 S! X W! l% x; `# Y% `
height was 6 feet, and he went through a somewhat* m9 b% Q$ R6 S1 `& @3 ^
early puberty and had stopped growing by age 14.
9 F: [! X* c5 L) P$ ^9 [The father denied taking any other medication. The3 |" x% y5 U8 Z8 o# [7 A7 B. {
child’s mother was in good health. Her menarche
, Z/ _/ w* r) G, twas at 11 years of age, and her height was at 5 feet
$ V) c' J$ p0 A5 inches. There was no other family history of pre-& |4 M( ], X; `8 J" |$ p" i
cocious sexual development in the first-degree rela-% ?' c: g3 J3 u9 M8 P
tives. There were no siblings.
3 I1 ^6 m7 k+ Z0 l9 c- Q! t& qPhysical Examination/ i& ^. m1 {0 i3 U) S- ^7 S4 E' Y
The physical examination revealed a very active,
, z: w0 ^# e! h/ ^6 S% E$ bplayful, and healthy boy. The vital signs documented
+ x5 X& A- R G B/ A$ H% La blood pressure of 85/50 mm Hg, his length was4 P* e+ U. U* V8 n% J
90 cm (>97th percentile), and his weight was 14.4 kg3 @1 `: l- q$ m; ]* M
(also >97th percentile). The observed yearly growth$ C( A+ z G \) b3 r; ]; d
velocity was 30 cm (12 inches). The examination of; R) A! @& g/ O, R# N
the neck revealed no thyroid enlargement.
# B4 y8 i3 `6 X# M& D; @! H- bThe genitourinary examination was remarkable for7 s4 m) B o) |- f
enlargement of the penis, with a stretched length of% G% ]6 @" M2 m. n( w3 U( G3 L
8 cm and a width of 2 cm. The glans penis was very well: M/ x. M: b- X: o5 v" @+ e/ h
developed. The pubic hair was Tanner II, mostly around1 c7 u! G3 u: w, @
540/ z3 d |; F1 |5 K
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from5 X* z( e; v; ?* O7 F; W
the base of the phallus and was dark and curled. The# J6 _! P$ d* x- s5 h
testicular volume was prepubertal at 2 mL each.
' R1 \; s a: R3 U7 I! bThe skin was moist and smooth and somewhat% T6 J K4 {9 C- ?! U+ y& j' a
oily. No axillary hair was noted. There were no: v1 E* n1 b& n" d" g1 G& b! g$ I
abnormal skin pigmentations or café-au-lait spots.% h5 J6 }1 y1 x( |
Neurologic evaluation showed deep tendon reflex 2+
+ Q% i ^- Y4 G* \: Z0 Ebilateral and symmetrical. There was no suggestion
1 P7 k8 v- f' d) uof papilledema.. M- N* o7 \# A/ w
Laboratory Evaluation* q$ R/ T, J7 T" G$ g- s; ^
The bone age was consistent with 28 months by' x' G4 J! h0 c1 O
using the standard of Greulich and Pyle at a chrono-1 O9 B0 _ _" p; Z. t
logic age of 16 months (advanced).5 Chromosomal
% m9 h5 T5 T% W/ d; l2 e" X1 Rkaryotype was 46XY. The thyroid function test
- Y: G; E2 z5 d' W7 K. Z+ h0 |showed a free T4 of 1.69 ng/dL, and thyroid stimu-
1 W& n) h0 x' A$ d' _4 nlating hormone level was 1.3 µIU/mL (both normal).
: j1 m: {' x* s: v5 n) }1 AThe concentrations of serum electrolytes, blood5 F( w/ A2 A. @' W* C
urea nitrogen, creatinine, and calcium all were J; W/ ^3 J, ^1 Z1 ]0 v
within normal range for his age. The concentration2 [$ d, t, p t- I
of serum 17-hydroxyprogesterone was 16 ng/dL I; d- G0 `2 D8 g
(normal, 3 to 90 ng/dL), androstenedione was 20
& ?" k5 R5 H! S+ V# e6 l' [ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
0 L$ i# }$ ^0 ~) r$ K0 L- }terone was 38 ng/dL (normal, 50 to 760 ng/dL),
3 u% ^4 X4 ?1 x& D" @* fdesoxycorticosterone was 4.3 ng/dL (normal, 7 to
3 \5 o% p0 k: }8 J& _) Z. l8 W49ng/dL), 11-desoxycortisol (specific compound S)6 `$ B2 R% S3 s$ W8 W
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-0 k, G( _: p/ l5 j
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
: Z$ a8 I2 N# L7 X4 S9 Stestosterone was 60 ng/dL (normal <3 to 10 ng/dL),
0 r; C7 e: [2 o J& [! Nand β-human chorionic gonadotropin was less than
+ ^, l- |/ ?* V1 v: a5 mIU/mL (normal <5 mIU/mL). Serum follicular6 u& V8 l+ L% c U
stimulating hormone and leuteinizing hormone. \0 Y6 D1 U, Y g& I0 o
concentrations were less than 0.05 mIU/mL# w' S2 ~& _5 B) k
(prepubertal).; u7 g4 e3 y( P5 O9 F8 [
The parents were notified about the laboratory
" J6 }4 L9 }% r9 Iresults and were informed that all of the tests were' T; K3 H, E% r( D+ s. x" W6 D
normal except the testosterone level was high. The8 ?5 ]+ n, I5 p1 |0 P
follow-up visit was arranged within a few weeks to( b( n' Q9 T) a6 m& M/ e
obtain testicular and abdominal sonograms; how-: W! ]1 S5 n& y' m- a# V
ever, the family did not return for 4 months.
- [ U' U! T0 `* S& z( QPhysical examination at this time revealed that the
+ \0 Z- O, G. Q) h9 Achild had grown 2.5 cm in 4 months and had gained( b6 P$ W4 y' Z5 i6 X
2 kg of weight. Physical examination remained! E* I) E9 s9 ?$ Y: O
unchanged. Surprisingly, the pubic hair almost com-7 M; b& m9 A( ~# i4 y F
pletely disappeared except for a few vellous hairs at
L9 ]% A! c5 ?. K# H: w% s: t' qthe base of the phallus. Testicular volume was still 23 z7 U' [- k9 h% Z
mL, and the size of the penis remained unchanged.# H4 D7 J# O! h6 p) n
The mother also said that the boy was no longer hav-
) K7 ]: V: `% ?! Xing frequent erections.. d; {: q" ?8 x; R
Both parents were again questioned about use of
, Z9 h& ?! X0 u9 ^2 S8 ?any ointment/creams that they may have applied to
, G! e( f' v+ r& Y8 kthe child’s skin. This time the father admitted the0 A/ E0 `; j0 |4 R7 I ~
Topical Testosterone Exposure / Bhowmick et al 541
+ V: ]- ^7 t# A+ ~) o/ ~' D' euse of testosterone gel twice daily that he was apply-( {; I* @0 `$ ^; P1 _
ing over his own shoulders, chest, and back area for
X5 ]* P5 i" T2 R% ya year. The father also revealed he was embarrassed
: M1 v/ O" h! x# n# e8 p& x! d4 vto disclose that he was using a testosterone gel pre-
6 V L; D. X, K" w C" wscribed by his family physician for decreased libido6 ^: q: F6 R1 c2 }
secondary to depression.
2 d9 S4 t N& ~- @3 cThe child slept in the same bed with parents.' u0 v! W0 c. L
The father would hug the baby and hold him on his" h X. @( B7 |0 i( `" s3 l& l
chest for a considerable period of time, causing sig-
% B% _7 d, F% e! \: X9 x5 hnificant bare skin contact between baby and father.
/ j5 a: v' M! C. f% Z; \The father also admitted that after the phone call,& {, X) t# R2 W6 \- I
when he learned the testosterone level in the baby+ B1 A" T# }3 K. H, |4 T7 R) f
was high, he then read the product information; B5 x' Q7 s) o [& b
packet and concluded that it was most likely the rea-
6 j3 x# Y' Q& C3 \- ~; Rson for the child’s virilization. At that time, they _3 M/ c2 h) N3 U) Q) o. F
decided to put the baby in a separate bed, and the
7 l: u( S# Q9 L* Yfather was not hugging him with bare skin and had
; C# d; N* q- z' w. Sbeen using protective clothing. A repeat testosterone
2 j6 [0 X, ^# k9 Qtest was ordered, but the family did not go to the
; C4 T: {" {$ g& Xlaboratory to obtain the test.
8 a7 P) G4 C+ c* h# ?0 `8 zDiscussion
- I$ h5 k. c4 w( S' MPrecocious puberty in boys is defined as secondary7 m# w4 N% a8 q0 x7 I; l
sexual development before 9 years of age.1,4% ]- x7 x* p: |
Precocious puberty is termed as central (true) when
# p5 x* c1 R ]% M% ?it is caused by the premature activation of hypo-
* J% g7 O, D/ g9 x+ c2 j1 Kthalamic pituitary gonadal axis. CPP is more com-+ \* o( u8 c( u
mon in girls than in boys.1,3 Most boys with CPP5 k7 u+ b" B) S' {
may have a central nervous system lesion that is' _/ }5 b" l0 k: j
responsible for the early activation of the hypothal-
$ K; B+ x% d( ~6 ?$ c Bamic pituitary gonadal axis.1-3 Thus, greater empha-, }/ ]% f& U$ @2 t) z: N5 D k
sis has been given to neuroradiologic imaging in
; r1 q$ v+ {$ @$ G3 {4 V2 Y" f& i& k- \5 hboys with precocious puberty. In addition to viril-, o& T, ~7 n+ C C/ w6 U4 m
ization, the clinical hallmark of CPP is the symmet-
9 I6 [) j% {9 Q3 `# Irical testicular growth secondary to stimulation by/ H( V9 i: e0 \1 z' S
gonadotropins.1,3
+ h* g( y1 c8 s. y# J4 BGonadotropin-independent peripheral preco-% \. @9 O, A0 E& x, r2 P' R: u
cious puberty in boys also results from inappropriate' S, }2 Y) j! J2 ^$ i8 F
androgenic stimulation from either endogenous or
. c% m+ S# a( i5 ~4 wexogenous sources, nonpituitary gonadotropin stim-
) x* @8 k7 S1 y. A# }ulation, and rare activating mutations.3 Virilizing& v. r" j: N4 a: p& T0 s5 q4 g4 n
congenital adrenal hyperplasia producing excessive1 [6 @% ]- t9 V7 G( i
adrenal androgens is a common cause of precocious) v% N. }0 q; T7 Z: g5 C
puberty in boys.3,4- K$ K3 r' O( f3 s, }& \
The most common form of congenital adrenal, I1 B9 t5 E5 k# r# z6 a1 E
hyperplasia is the 21-hydroxylase enzyme deficiency.
, d; M# G: \5 g$ z3 o5 {, E; J2 @The 11-β hydroxylase deficiency may also result in8 r8 B7 x/ K7 t, i
excessive adrenal androgen production, and rarely,, j! D, E& y) Y" c3 ]6 A6 i
an adrenal tumor may also cause adrenal androgen3 s% a! |+ Q, Y# [9 p
excess.1,3; {! x+ ^0 U) x7 i: O5 M
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
5 x) Y+ K6 M$ [ k9 x542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
, G4 s) O9 g- X6 ?7 |0 D2 ^A unique entity of male-limited gonadotropin-5 j$ P1 i8 {: z( D* `3 {: S4 ~
independent precocious puberty, which is also known7 J1 U4 b7 C5 z; |3 Z( n7 j8 s
as testotoxicosis, may cause precocious puberty at a. h( k; Q' W7 D. r& C( T2 s" |
very young age. The physical findings in these boys) k; u7 S2 P% g+ ?
with this disorder are full pubertal development,* F- ]9 d! ^. e" u1 H6 T+ Q* e
including bilateral testicular growth, similar to boys# L T+ n' Q4 z n& P1 s
with CPP. The gonadotropin levels in this disorder. L2 J! J# S. M8 z1 P: I
are suppressed to prepubertal levels and do not show
9 Z( ]- e1 S/ b% \2 m* _. cpubertal response of gonadotropin after gonadotropin-
. Q% v5 \0 }, a& G+ m, creleasing hormone stimulation. This is a sex-linked: }8 B0 V) y% X1 q
autosomal dominant disorder that affects only
! a W; [3 v9 M* Y( gmales; therefore, other male members of the family
: Z9 k: _9 ^9 e" N" ^+ Ymay have similar precocious puberty.3( `, g; W7 t4 P" `
In our patient, physical examination was incon-
1 R. g& Y# M- r6 ~2 w. Nsistent with true precocious puberty since his testi-/ T7 ^- B* V( o
cles were prepubertal in size. However, testotoxicosis
& N; }. ^8 b4 X6 L& |+ F+ S( x0 gwas in the differential diagnosis because his father) j) n6 V% M- w) n( M/ n1 F# Z) o
started puberty somewhat early, and occasionally,8 }( F6 y2 R5 W6 j. B
testicular enlargement is not that evident in the
K" A& v% ~! m' V3 N5 Xbeginning of this process.1 In the absence of a neg-1 E! o7 K5 ]: e0 w
ative initial history of androgen exposure, our
. N. j9 Q9 ?' o1 b( b( ?biggest concern was virilizing adrenal hyperplasia,
6 k- T9 M2 }0 o- P' b. a) ceither 21-hydroxylase deficiency or 11-β hydroxylase
7 W* F) e$ l* b$ Q! Rdeficiency. Those diagnoses were excluded by find-: M: X; q# u2 _+ M' G
ing the normal level of adrenal steroids.# X1 [9 h5 G% r2 ^8 }: x N
The diagnosis of exogenous androgens was strongly2 ?% |3 q; `$ o$ T
suspected in a follow-up visit after 4 months because
9 j" B- ~ `1 T* q6 Tthe physical examination revealed the complete disap-
7 {; B) p! q4 @7 x. Z( E' rpearance of pubic hair, normal growth velocity, and0 q. f! }1 Y$ V- P- ]; x: ^4 r2 M
decreased erections. The father admitted using a testos-' _ D1 V; G$ C4 G# R( b' T! d% h
terone gel, which he concealed at first visit. He was
8 j: [% d# u! c8 Q1 dusing it rather frequently, twice a day. The Physicians’
% {, m( V8 a( E8 b: Y7 `1 eDesk Reference, or package insert of this product, gel or4 Z% U) f( y2 z+ Q9 B, Q3 v7 `) Z
cream, cautions about dermal testosterone transfer to
$ I* ~9 F/ A! ^- m/ q% }unprotected females through direct skin exposure.0 W w, L/ \9 x0 b4 t& X/ w
Serum testosterone level was found to be 2 times the
! F: V& r! ^5 h6 o; K) |' xbaseline value in those females who were exposed to
/ _2 {0 a8 G K1 f1 z/ [ a$ Jeven 15 minutes of direct skin contact with their male" ~0 U0 c4 L9 B' \% A' W( ?! x L
partners.6 However, when a shirt covered the applica-
{, q& A F0 @) o1 ]7 Ption site, this testosterone transfer was prevented.
7 M- V$ P6 t6 l3 X) l0 fOur patient’s testosterone level was 60 ng/mL,
: Z0 E. h$ D; F& C$ } nwhich was clearly high. Some studies suggest that3 F! [1 o) b! y+ k, r
dermal conversion of testosterone to dihydrotestos-4 Q9 s) }' ^5 F6 ~
terone, which is a more potent metabolite, is more) a7 X& J2 S/ ?
active in young children exposed to testosterone
" B3 V3 ?6 q; r+ e8 I Pexogenously7; however, we did not measure a dihy-5 j2 ]6 A" @4 |1 ]# R, |' W+ ^
drotestosterone level in our patient. In addition to& T n. g7 Z, O; y
virilization, exposure to exogenous testosterone in
# s* |$ c3 k- Z: J2 a, [children results in an increase in growth velocity and5 q7 W6 O, \. S* J# f
advanced bone age, as seen in our patient.
6 o2 G4 \: e" [4 `/ D" e" c2 hThe long-term effect of androgen exposure during
/ x0 z. Y1 ]: | ~% b Y& Q+ Wearly childhood on pubertal development and final% y8 L( g: D1 g- I
adult height are not fully known and always remain/ e* V' s+ S9 u7 |
a concern. Children treated with short-term testos-& Y0 u" n( J; u# |
terone injection or topical androgen may exhibit some
' N& e- H# G7 J( ^1 E! gacceleration of the skeletal maturation; however, after
5 ^! {- s8 t; o) F# L1 wcessation of treatment, the rate of bone maturation
. r8 q$ y$ Z" Z3 F& F, vdecelerates and gradually returns to normal.8,9
8 s# I: R- b$ Q3 W! n. @4 S( lThere are conflicting reports and controversy! x- s" e+ [8 H
over the effect of early androgen exposure on adult* F& T% G% [* r
penile length.10,11 Some reports suggest subnormal4 H0 ^' ^' S7 z* H" y
adult penile length, apparently because of downreg-
4 r$ Q* x- G9 D# bulation of androgen receptor number.10,12 However,
2 F. V2 W; r" L4 U5 e {( jSutherland et al13 did not find a correlation between
9 S8 v2 ^1 v! C( X1 O# F) cchildhood testosterone exposure and reduced adult
( c4 H: e0 X5 ^penile length in clinical studies.
0 U7 C' a; i' r- w0 uNonetheless, we do not believe our patient is
]2 y7 ?5 o& igoing to experience any of the untoward effects from
2 v' e) C8 V8 C% l J) c! \6 ptestosterone exposure as mentioned earlier because
" J7 X, |- ], E% Gthe exposure was not for a prolonged period of time.
% E) o4 J6 x+ M, Q# Z) F. q7 \Although the bone age was advanced at the time of
* g+ t3 Q2 p2 d$ ]/ Xdiagnosis, the child had a normal growth velocity at
6 ?4 x* B" v( B6 v( v2 V" Athe follow-up visit. It is hoped that his final adult, o7 q3 |' j% F6 y+ m; x
height will not be affected.
/ N) ~# b2 V. e! |7 J X. @Although rarely reported, the widespread avail-
7 d" }5 _- _6 n7 Dability of androgen products in our society may' S5 W* ^2 W% r' \0 \0 n' ]* j
indeed cause more virilization in male or female
$ ^6 [; r5 n0 {! c8 I7 I, R. s$ A! Dchildren than one would realize. Exposure to andro-9 ]5 Y# V0 n$ l
gen products must be considered and specific ques-; g3 g. d' {# l+ J+ |2 `
tioning about the use of a testosterone product or+ e v/ W& _8 B* K" n
gel should be asked of the family members during
- ?0 n1 z4 g) l+ ythe evaluation of any children who present with vir-
. _& Q# x7 D, @5 v) |: ^ilization or peripheral precocious puberty. The diag-
/ g# S7 i8 ]$ P: D4 ]' Znosis can be established by just a few tests and by
( j6 _" t/ {; \6 pappropriate history. The inability to obtain such a' M; {( C! v8 ~" R/ U6 B, `& \
history, or failure to ask the specific questions, may
3 Q. u2 K, }6 S. Wresult in extensive, unnecessary, and expensive
3 u# ~) x X- J8 z; h( hinvestigation. The primary care physician should be
* n! y/ ~0 S- ?$ f& Gaware of this fact, because most of these children
7 ?. _+ V. H: Z0 t' s3 Omay initially present in their practice. The Physicians’
5 X# ]$ i( |$ N" xDesk Reference and package insert should also put a
6 h: o( S, I, [; `" t$ w/ B5 ]warning about the virilizing effect on a male or8 m+ M5 s' A0 L! k# Z
female child who might come in contact with some-
. N- [/ `1 e) I/ T. K" f* Aone using any of these products.
! t \" w2 [6 K5 @4 g" Z. `$ PReferences1 h. Q2 R$ q4 w; m
1. Styne DM. The testes: disorder of sexual differentiation- F7 x* i" E! x; U1 C, S; `
and puberty in the male. In: Sperling MA, ed. Pediatric- W& V2 u' c2 s1 G' R0 W
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
+ }+ U3 Q5 |, s% L2002: 565-628.
8 @9 Y# j* U8 r. Y) A, ~4 X2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious2 [* Y; y- t: w4 P; ~8 [
puberty in children with tumours of the suprasellar pineal |
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