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Sexual Precocity in a 16-Month-Old$ G2 q3 ]0 b! `. C/ D
Boy Induced by Indirect Topical7 a' j1 T2 n! K- h2 d, s" b9 n
Exposure to Testosterone$ P1 p) n3 P; u5 G6 S7 ]
Samar K. Bhowmick, MD, FACE,1 Tracy Ricke, MD,2' H$ S! X3 q# R( x
and Kenneth R. Rettig, MD1- _" d6 o0 P, [+ U: b9 B2 n% o
Clinical Pediatrics a$ J3 B' R f
Volume 46 Number 62 D" p; M1 [ F& y: [
July 2007 540-543
, I, l' t5 ^2 q: ?! H© 2007 Sage Publications
5 F9 h/ ?% s- k' d10.1177/0009922806296651
- H9 T, g, s4 Z0 B: Ghttp://clp.sagepub.com X* @7 q. C6 }! W( \' \! Q
hosted at" x9 j# Q) D \: A: H8 p
http://online.sagepub.com* e/ _/ ~1 s' U% S M
Precocious puberty in boys, central or peripheral,: M& e& s) b7 t& R- q4 b! j
is a significant concern for physicians. Central
8 x/ [6 j; [, a gprecocious puberty (CPP), which is mediated$ _7 G1 y/ l7 g# Q1 M
through the hypothalamic pituitary gonadal axis, has
$ C' s4 H$ |( f J5 d* Y1 O7 D# ~a higher incidence of organic central nervous system. y( G# s( [# |% d& Y! \# ]
lesions in boys.1,2 Virilization in boys, as manifested
4 |1 A+ G: n0 k$ y; _; Oby enlargement of the penis, development of pubic o% {7 R& f. o+ J0 |* G) @/ ]
hair, and facial acne without enlargement of testi-
6 p. ?/ l, R: |& ~2 X* Pcles, suggests peripheral or pseudopuberty.1-3 We N& W6 p' [% v2 R; Y* j
report a 16-month-old boy who presented with the
0 F7 D, c- n9 g4 Z0 u& D8 xenlargement of the phallus and pubic hair develop-
/ Y1 d% v, j; Z& p3 M9 l0 P6 Vment without testicular enlargement, which was due
; f/ y# A, r/ ^, Jto the unintentional exposure to androgen gel used by
$ B v3 L) e) R' p" sthe father. The family initially concealed this infor-
, T2 g9 o% }& C* H5 n" J* ~: Dmation, resulting in an extensive work-up for this+ x6 x8 `' v3 y* F% C0 i
child. Given the widespread and easy availability of
2 I+ x9 q& W# atestosterone gel and cream, we believe this is proba-: }% `& e! L$ P6 k# K3 \7 {
bly more common than the rare case report in the* U u/ v6 a+ Y% D6 h! @
literature.4( ^2 F2 s& g# E8 O
Patient Report
1 L% f/ L3 k; L5 w3 hA 16-month-old white child was referred to the
+ z7 D( c; z1 \; Z! A7 l7 E9 E6 Wendocrine clinic by his pediatrician with the concern
; h1 E+ \5 I& D8 i8 ^" ~of early sexual development. His mother noticed
3 i3 C3 d! X1 U# Wlight colored pubic hair development when he was
9 y% c2 y4 ~; Y2 F" f4 i8 _From the 1Division of Pediatric Endocrinology, 2University of" T0 i4 ]5 _( l
South Alabama Medical Center, Mobile, Alabama.
" `0 A* Q7 j7 N* A. b5 ?; yAddress correspondence to: Samar K. Bhowmick, MD, FACE,, n& e0 H& c& t% r, G! c. ~- l" b* g
Professor of Pediatrics, University of South Alabama, College of, K1 c |. z) t$ [2 @" I6 L' N
Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
) D; d. V# \& L: ?7 Ve-mail: [email protected].
2 m0 k9 ]' \4 [6 W$ s1 l S* Wabout 6 to 7 months old, which progressively became
/ H7 I, i0 N2 q4 Odarker. She was also concerned about the enlarge-
: m( V5 @6 w$ o& r5 J; u5 k5 ?+ T* P- wment of his penis and frequent erections. The child
# I! E# p. Z# F: M4 k% X L5 R* k2 qwas the product of a full-term normal delivery, with
9 v! n$ [4 ~/ l. r8 X" p8 ca birth weight of 7 lb 14 oz, and birth length of
/ X9 I( u% D$ C9 S6 k5 Z+ \20 inches. He was breast-fed throughout the first year* m0 O8 l' s s5 @! {
of life and was still receiving breast milk along with
" D8 J, J& Y j6 A1 |/ w, Nsolid food. He had no hospitalizations or surgery,5 N }2 ^% I* R0 ^
and his psychosocial and psychomotor development
+ ~- s* b/ I% A$ E# W B5 U$ k9 Hwas age appropriate.0 d& y) \. |& m }* t& [. e: f
The family history was remarkable for the father,3 p) W) E3 v- K) V; \" [
who was diagnosed with hypothyroidism at age 16,& H/ U3 C1 F! v" L$ L& Y
which was treated with thyroxine. The father’s
A' n0 y7 B+ D4 Bheight was 6 feet, and he went through a somewhat2 G% t ]6 U+ i$ S
early puberty and had stopped growing by age 14.; h1 M* r7 J4 ?5 F8 P- x8 x u* @
The father denied taking any other medication. The
8 H# w. K1 o* v3 qchild’s mother was in good health. Her menarche3 Q' \7 v. G2 \2 A$ o9 U
was at 11 years of age, and her height was at 5 feet; S: K3 q$ a/ b i7 \! Q
5 inches. There was no other family history of pre-" E* w1 Z2 L) ]
cocious sexual development in the first-degree rela-
0 d' [9 F* \& {3 A2 U$ Ztives. There were no siblings.: ^! X! Q! j1 }
Physical Examination
% Q( f. Y% |8 j- a8 b0 `The physical examination revealed a very active,
! [9 L/ Z8 p& w# H9 Z Aplayful, and healthy boy. The vital signs documented; q9 N4 F9 j: v0 {) i& {
a blood pressure of 85/50 mm Hg, his length was
7 e# ]1 j/ j" b6 z0 s90 cm (>97th percentile), and his weight was 14.4 kg
9 V) ~3 k, i) h; w% `8 S- L(also >97th percentile). The observed yearly growth- k' A" K& y2 a/ p3 ^
velocity was 30 cm (12 inches). The examination of
1 r9 E- U7 U( b1 \the neck revealed no thyroid enlargement.
8 j* n% U: x+ l+ W/ D v" I* ^The genitourinary examination was remarkable for# b8 `: R3 i9 @6 D( V
enlargement of the penis, with a stretched length of
: @3 Y( d& t+ {0 R- H/ e8 cm and a width of 2 cm. The glans penis was very well
' [7 L" M/ m% r' }# C5 G+ h. Tdeveloped. The pubic hair was Tanner II, mostly around
1 k* i6 F4 A2 z# y* D2 f540
% e' L8 R0 ^3 D1 W9 M Pat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
3 g# {) e# a* X8 I" ~the base of the phallus and was dark and curled. The
5 z' R+ v+ D0 h0 ytesticular volume was prepubertal at 2 mL each.' `+ q( T& r5 q% K! ~
The skin was moist and smooth and somewhat
! x. U$ u4 g0 l3 e/ L6 Hoily. No axillary hair was noted. There were no" s: V/ P& Z" R4 _1 I
abnormal skin pigmentations or café-au-lait spots.
8 ~; V- W8 J# F) b6 p5 F/ l( f" mNeurologic evaluation showed deep tendon reflex 2+% g/ n* K- v$ m; n: r4 T3 V
bilateral and symmetrical. There was no suggestion( \1 t+ n- i7 ?! J, {" l
of papilledema." P( M1 z; `9 S" E
Laboratory Evaluation
9 L: u- o$ S- ? oThe bone age was consistent with 28 months by9 }7 x# h! Q4 E- u) f
using the standard of Greulich and Pyle at a chrono-
1 i6 @" [1 ~: d& T0 ^4 Clogic age of 16 months (advanced).5 Chromosomal9 k" u1 B9 n# I8 c
karyotype was 46XY. The thyroid function test* w \2 f' j1 n9 B" A
showed a free T4 of 1.69 ng/dL, and thyroid stimu-
( q7 i J6 J7 xlating hormone level was 1.3 µIU/mL (both normal)." @6 R' L3 S, A% h& u
The concentrations of serum electrolytes, blood
% `0 n: w4 o; M7 [ | z7 Purea nitrogen, creatinine, and calcium all were
3 m2 {( A/ t1 \9 E# xwithin normal range for his age. The concentration! P$ [7 T* T# ~( {$ H
of serum 17-hydroxyprogesterone was 16 ng/dL, b( C' J% k; q }
(normal, 3 to 90 ng/dL), androstenedione was 20
! ~# o* j* _! ^1 n' N g/ C0 Gng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-+ h x( p, R1 t8 v( M5 g! t! u
terone was 38 ng/dL (normal, 50 to 760 ng/dL),
7 o& ?- }, ?& ]/ g0 Q6 Fdesoxycorticosterone was 4.3 ng/dL (normal, 7 to6 Z3 Q- D) z" B9 b1 h
49ng/dL), 11-desoxycortisol (specific compound S)
+ X, k1 ]! i$ v4 q9 Y, Ewas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
; [' ]. T: M) G' \& ctisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total: `$ t5 g9 X# C, D, Z
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),& M# g) P V. u7 t
and β-human chorionic gonadotropin was less than8 A& ]/ N: g- Q7 m0 ~; p
5 mIU/mL (normal <5 mIU/mL). Serum follicular
5 R" B2 x8 s$ L l6 v0 M# pstimulating hormone and leuteinizing hormone( d# {* R* [* X/ B
concentrations were less than 0.05 mIU/mL
& w2 Y7 s' L$ t" U(prepubertal).
0 C0 `' l, \' E0 g9 rThe parents were notified about the laboratory
G% \1 B+ E$ e5 Z4 {* ~results and were informed that all of the tests were- e6 _ |4 L3 \/ a; p# Y
normal except the testosterone level was high. The. v2 G5 [5 t& B- v3 v+ D
follow-up visit was arranged within a few weeks to
, k2 |/ V3 f" {5 _2 i vobtain testicular and abdominal sonograms; how-
0 T4 V) `, v) w% X6 Dever, the family did not return for 4 months.1 @1 _9 `* I5 H$ v+ R! v2 A7 g
Physical examination at this time revealed that the
4 a7 R5 i- K! {: _% }, lchild had grown 2.5 cm in 4 months and had gained! U9 o" s0 [3 l4 v5 E3 } c& a
2 kg of weight. Physical examination remained3 `( B! c* S0 t, U; P5 h
unchanged. Surprisingly, the pubic hair almost com-
# U" c) h& V- J$ i2 zpletely disappeared except for a few vellous hairs at
7 b' D5 C4 G: [' r' Q& D/ athe base of the phallus. Testicular volume was still 2 o% J) X- }' L4 m- F- r- K+ K
mL, and the size of the penis remained unchanged.
1 E" w/ U, B) U9 C3 S( hThe mother also said that the boy was no longer hav-
/ F0 ~7 b. g7 G0 G }; E' v7 e2 Eing frequent erections.7 p2 M0 s8 i+ H: e3 f" ^
Both parents were again questioned about use of) f5 W+ N3 P/ o0 \- z' |1 B3 O
any ointment/creams that they may have applied to: m0 m4 l& `, x* P
the child’s skin. This time the father admitted the
3 _0 ^ L( n$ iTopical Testosterone Exposure / Bhowmick et al 5413 K g# G# [! c; d! P' d/ f" }+ G
use of testosterone gel twice daily that he was apply-
; E' h# n s6 z1 W8 E' b. Ying over his own shoulders, chest, and back area for, B6 B! O2 `8 J/ V! U$ j
a year. The father also revealed he was embarrassed
' e1 x9 R4 `% ~4 G$ v+ Lto disclose that he was using a testosterone gel pre-
5 Z$ Y3 D4 M( d) H% |- Y$ Rscribed by his family physician for decreased libido( P* Y0 t4 V9 l4 v: t
secondary to depression.
+ @" D8 e2 r; n$ F# w" g3 [The child slept in the same bed with parents.5 d6 `! `) \7 [0 X. w: {+ B! S
The father would hug the baby and hold him on his( w" g+ R8 X7 _6 P& z' E1 `! s
chest for a considerable period of time, causing sig-
1 _& w1 M: u& K; \- }nificant bare skin contact between baby and father.
: v4 ?1 |" e, ]/ o: E0 XThe father also admitted that after the phone call,
8 G9 n ?$ h+ X+ [, M1 Swhen he learned the testosterone level in the baby) e- g. z# C7 D8 d* Z2 ]# z
was high, he then read the product information3 a: D/ Z; C4 Q e) A5 ]; z
packet and concluded that it was most likely the rea-. g% G/ X: g: L4 M: c. u8 c
son for the child’s virilization. At that time, they
# T) i; }5 q, t, V9 }decided to put the baby in a separate bed, and the
6 ^$ H: s: J8 M& rfather was not hugging him with bare skin and had% B( ?) x: P% u6 F# M b# {
been using protective clothing. A repeat testosterone1 J$ I; b1 a, J# ?
test was ordered, but the family did not go to the1 p5 y: b- q: z8 d7 [6 R
laboratory to obtain the test." }# H7 L3 r3 R; f: C
Discussion j! D3 G' [, Y$ O+ n4 p
Precocious puberty in boys is defined as secondary0 O1 X j! |9 {$ }
sexual development before 9 years of age.1,4
. f# D) n8 s; G* H! R( {7 Z& z1 bPrecocious puberty is termed as central (true) when
) g( K0 V9 F/ ], r. w% cit is caused by the premature activation of hypo-
/ ^& e# F7 H1 o5 a6 Gthalamic pituitary gonadal axis. CPP is more com-
* h5 V; L' \4 x7 A8 Tmon in girls than in boys.1,3 Most boys with CPP x6 t6 _0 V% f" i$ a9 ^
may have a central nervous system lesion that is
( O7 z/ s: _/ b, { j' {: ?responsible for the early activation of the hypothal-3 U# k5 A7 P4 c d* ~5 D
amic pituitary gonadal axis.1-3 Thus, greater empha-5 m# L5 {0 @1 t( f3 T9 v/ J
sis has been given to neuroradiologic imaging in
) Q) d: t4 Q( y; u* Eboys with precocious puberty. In addition to viril-
: f+ w" R1 [2 q7 ?" Pization, the clinical hallmark of CPP is the symmet-) _( P8 g$ ^& d% V4 ?& H
rical testicular growth secondary to stimulation by8 a7 M3 j c; \& ]) Q$ G/ i
gonadotropins.1,3
7 @, b& |6 M! d4 P( D, u0 FGonadotropin-independent peripheral preco-1 Z$ U) I K* e1 _, @" S( h
cious puberty in boys also results from inappropriate
y+ A* G- n. fandrogenic stimulation from either endogenous or) |( ~ Q: [8 J* w# J
exogenous sources, nonpituitary gonadotropin stim-$ [- W# @) H& {1 _
ulation, and rare activating mutations.3 Virilizing: U/ E0 I7 P' l: Z4 E
congenital adrenal hyperplasia producing excessive
/ C J+ L( r( W" aadrenal androgens is a common cause of precocious1 w1 Q; C* B6 T- [; K( V& c
puberty in boys.3,4
1 @! U" g4 L$ I% i4 u& v& `The most common form of congenital adrenal
9 Z+ [: P! b3 j& p- @4 Y# `hyperplasia is the 21-hydroxylase enzyme deficiency.
: q- [& L8 O: j8 @The 11-β hydroxylase deficiency may also result in0 l( V( v9 Z$ q0 R$ G
excessive adrenal androgen production, and rarely, Q) i8 {/ N5 ~; R" h
an adrenal tumor may also cause adrenal androgen" z; ]# H5 e: p* E/ k+ w1 o9 k
excess.1,3# v! z; T" u# V5 ~% u" }; r
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
/ V. s" h$ m5 X4 D$ k9 S( U" O542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
+ u) f% B8 ?1 s M2 y2 b+ l. b6 C6 bA unique entity of male-limited gonadotropin-" e# l$ n7 ^ A7 K0 u
independent precocious puberty, which is also known; K% r5 p5 E. W* z* `! d1 }3 t5 R) l
as testotoxicosis, may cause precocious puberty at a$ n6 a/ ~) o3 O9 V/ V2 y
very young age. The physical findings in these boys0 u5 R: k1 F9 Q3 ^
with this disorder are full pubertal development,
W6 ^6 H* ]% [) X# lincluding bilateral testicular growth, similar to boys5 N: ?3 h9 ]" n9 r( F
with CPP. The gonadotropin levels in this disorder
+ r( ~ e. ?+ S% H0 ]- Iare suppressed to prepubertal levels and do not show- U" j0 A& I: s+ g% Y' E+ L
pubertal response of gonadotropin after gonadotropin-, v5 C, p+ ^" t6 v- k
releasing hormone stimulation. This is a sex-linked1 t) x9 M1 `* \' N. t- }. q8 _
autosomal dominant disorder that affects only
2 R$ j5 T- f- s! [7 Gmales; therefore, other male members of the family) S- Q C* r5 P
may have similar precocious puberty.3
- y8 ~1 r% h6 ~ wIn our patient, physical examination was incon-3 N9 R+ D8 r# h0 G
sistent with true precocious puberty since his testi-
7 R9 p0 I; O" c5 }$ }$ {cles were prepubertal in size. However, testotoxicosis/ L* w: X/ h/ y+ f" h* H
was in the differential diagnosis because his father3 r _6 Y7 T9 R) j8 Q% S& i
started puberty somewhat early, and occasionally,
& p9 b" u6 w. Q1 [4 z8 atesticular enlargement is not that evident in the& ?3 z. n. P3 T% D% T, c% V, o
beginning of this process.1 In the absence of a neg-
2 O: p* ~4 z: G/ v' I1 [ative initial history of androgen exposure, our9 n z; P1 F4 }" J
biggest concern was virilizing adrenal hyperplasia,1 R5 @+ f: l6 c" X5 b+ X R: F
either 21-hydroxylase deficiency or 11-β hydroxylase3 \( N2 @$ e# D4 W% _, h; c5 ^
deficiency. Those diagnoses were excluded by find-" c1 t, @ v6 `: v( T, j* A
ing the normal level of adrenal steroids.3 Y4 Y# s7 b0 K0 W( o
The diagnosis of exogenous androgens was strongly* ?+ J N/ P/ G3 {( d2 U% N
suspected in a follow-up visit after 4 months because: J3 y- T5 z8 x9 y: N
the physical examination revealed the complete disap-
) }: U" r4 u% A7 _pearance of pubic hair, normal growth velocity, and
( V2 `; }& z% L9 m$ f. ~9 Udecreased erections. The father admitted using a testos-
) Y: C4 R! ~5 K9 c) h) t; P( yterone gel, which he concealed at first visit. He was
) z- i0 p/ k0 k, v: ^, Rusing it rather frequently, twice a day. The Physicians’
0 D/ U* f4 I) V8 A. b3 f& H+ HDesk Reference, or package insert of this product, gel or0 H% {5 `% |4 D8 N" h. c
cream, cautions about dermal testosterone transfer to: u# Q8 Q4 i8 P, _( C# [
unprotected females through direct skin exposure.4 p5 t- Y6 T3 }# h7 `. V0 e
Serum testosterone level was found to be 2 times the/ }2 J3 ~6 h5 `3 f' f
baseline value in those females who were exposed to6 T+ Z. ]8 Y: r1 C
even 15 minutes of direct skin contact with their male" u" r* ~. u3 b- g) D7 u
partners.6 However, when a shirt covered the applica-
# D- O5 d8 z) ction site, this testosterone transfer was prevented.
# K) Z5 W/ `6 j0 GOur patient’s testosterone level was 60 ng/mL,
9 Y5 d- H5 F" v0 t( Lwhich was clearly high. Some studies suggest that
' T6 D4 K3 r: Odermal conversion of testosterone to dihydrotestos-1 [+ C8 N. j: c8 ]
terone, which is a more potent metabolite, is more) [) I$ D4 }* l% e" E {+ ?7 ^8 j a
active in young children exposed to testosterone
6 B$ C" ]7 \! x! g3 I6 `" z2 v2 Uexogenously7; however, we did not measure a dihy-) [1 n8 `+ y) ?- |' p1 b+ Q: ^
drotestosterone level in our patient. In addition to$ q- G. ?$ v! ]( K
virilization, exposure to exogenous testosterone in4 J7 k1 E$ P- Q4 [! V
children results in an increase in growth velocity and" p f+ a- X( a# C9 A
advanced bone age, as seen in our patient. G7 n5 L k& B/ r6 ?8 n
The long-term effect of androgen exposure during
3 s' x! c6 q) H y. h+ {early childhood on pubertal development and final
7 x" w5 q& q. Kadult height are not fully known and always remain
- m/ b! \( U5 p0 ua concern. Children treated with short-term testos-
9 T+ R8 \( S9 D' ^ d2 Uterone injection or topical androgen may exhibit some
+ d5 t% U' P1 D. \3 \acceleration of the skeletal maturation; however, after3 \6 k: A a1 [( d: S: j
cessation of treatment, the rate of bone maturation
& n! f" C8 K" I5 Q i' I- Gdecelerates and gradually returns to normal.8,9: O B7 [0 E+ Q0 X& L# T1 r/ q" M
There are conflicting reports and controversy+ Y( L; S; _) B
over the effect of early androgen exposure on adult* B8 G M" [( O% i' J `6 [# y! |
penile length.10,11 Some reports suggest subnormal
$ |5 |) Z+ T/ T# S# A1 X) Cadult penile length, apparently because of downreg-
3 G: S& H" e1 O! o, B5 M) a# _ulation of androgen receptor number.10,12 However,. h* ^$ U1 T7 E/ [, `
Sutherland et al13 did not find a correlation between/ {$ h1 C/ \: ]9 x' \/ W
childhood testosterone exposure and reduced adult" q& b0 Q$ V, L+ }: \+ t
penile length in clinical studies.0 J" `7 `. K* `8 a: q
Nonetheless, we do not believe our patient is
: n i' m) T0 M, V' J2 Cgoing to experience any of the untoward effects from q a( ?( L/ q: j* ], E$ y: }
testosterone exposure as mentioned earlier because- c1 O6 S8 B0 @" @ P) e* {6 W! x
the exposure was not for a prolonged period of time.
. s+ P k* p% J/ pAlthough the bone age was advanced at the time of
4 S3 l1 P5 s7 z( ~diagnosis, the child had a normal growth velocity at
S2 K) q3 }' P: {3 p# F3 Cthe follow-up visit. It is hoped that his final adult4 Z( s3 ?! s* U6 l
height will not be affected.
% ~& Q. v0 @3 ]0 v/ }Although rarely reported, the widespread avail-
u+ N- S7 T* j' gability of androgen products in our society may
9 h( [7 ]$ [. ]7 F2 j: M& |- t, j3 `indeed cause more virilization in male or female
# i, G( G. z1 z) w9 Gchildren than one would realize. Exposure to andro-
' I6 m5 `! S" e# v8 P" s$ sgen products must be considered and specific ques-" k1 b# n# z; U% g( J- l
tioning about the use of a testosterone product or2 `) B$ R3 z0 R$ X
gel should be asked of the family members during+ C+ |5 Q& q5 x" u$ ?6 f
the evaluation of any children who present with vir-
5 `' n9 u/ H" U. ?ilization or peripheral precocious puberty. The diag-
! e! g9 v% @7 ^! D5 T( t' onosis can be established by just a few tests and by
- D2 D* d1 O5 L$ W) Mappropriate history. The inability to obtain such a7 M/ G+ \) ^9 z# f* Y6 z
history, or failure to ask the specific questions, may, P2 B0 C% W' X& N5 D0 Z0 u
result in extensive, unnecessary, and expensive
5 I9 R! v+ j( H4 v! L' B6 n% y$ Dinvestigation. The primary care physician should be
! ]; r+ s! z) l$ B$ y# i2 Xaware of this fact, because most of these children
?/ W/ c$ Q4 \$ Emay initially present in their practice. The Physicians’
* d5 V f, a8 C( q; S/ L( r CDesk Reference and package insert should also put a) H. H) J: S: N+ _0 `/ @6 e
warning about the virilizing effect on a male or1 G) Z. r2 g% Y9 T: `
female child who might come in contact with some-
- |$ u0 @4 @) Oone using any of these products.
* ]" h! c2 e7 |References
; X" _; c# S) V% |1. Styne DM. The testes: disorder of sexual differentiation
& r$ H8 M& i- B9 B: R! uand puberty in the male. In: Sperling MA, ed. Pediatric
! J8 d2 d& y2 [/ F. M; HEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
) h# _5 ^1 F# ]! L2 D% e2002: 565-628.
1 m/ K* s# e0 [% ~4 P7 b2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious$ N) S r% q/ @
puberty in children with tumours of the suprasellar pineal |
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