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Sexual Precocity in a 16-Month-Old
* Z" b! j0 Z, S, h& _Boy Induced by Indirect Topical: V/ W+ U" v. u; Z. I- W4 Y O1 m/ J
Exposure to Testosterone
* B6 z$ g. k' n2 s1 o) XSamar K. Bhowmick, MD, FACE,1 Tracy Ricke, MD,2
; `# j1 H, l7 P* F' eand Kenneth R. Rettig, MD16 \$ l- t/ O; b! H5 ^9 W! h; k
Clinical Pediatrics
* a0 U: m& ~# `1 jVolume 46 Number 6
! U- S6 r& J! _3 a) CJuly 2007 540-5434 t- }8 S: }! U0 q" H
© 2007 Sage Publications1 n3 C! f4 I5 E* d: f6 z U/ R
10.1177/0009922806296651
5 a% w9 L7 g$ Y/ B1 B8 M* Fhttp://clp.sagepub.com2 N! a2 D6 q. @) x+ e* ~' F' S
hosted at, x% Y. a* d2 L, }8 D. _$ u _6 B
http://online.sagepub.com
+ P6 ?& y+ x' g! z: j& I2 zPrecocious puberty in boys, central or peripheral,
7 h$ }- X V& G; n y% Dis a significant concern for physicians. Central0 t& f) b( c7 Y
precocious puberty (CPP), which is mediated9 T9 H- W/ x+ F/ a9 h* E' z. O: |6 j
through the hypothalamic pituitary gonadal axis, has
5 a' W" S, d5 ?( ja higher incidence of organic central nervous system3 l3 A/ M; K; i' l% }/ L9 H6 W9 l
lesions in boys.1,2 Virilization in boys, as manifested
- F3 ?/ j: O& ?4 r h; b1 |, p8 Nby enlargement of the penis, development of pubic
/ `4 l r% m+ l7 z) @& j$ y. hhair, and facial acne without enlargement of testi-- l$ s. w4 O" z
cles, suggests peripheral or pseudopuberty.1-3 We8 y5 Q# [2 p' d8 x- F& Q' f0 h
report a 16-month-old boy who presented with the3 i) g! u7 ?+ W' C
enlargement of the phallus and pubic hair develop-6 U8 g2 y' H( T) F' @) g* H
ment without testicular enlargement, which was due/ H, |# {3 n# A$ F( x; N* L7 E" J
to the unintentional exposure to androgen gel used by; H$ N3 ]; {# H
the father. The family initially concealed this infor-! t0 Y8 d% w% X0 A( s
mation, resulting in an extensive work-up for this$ D& w: |; V# f2 X' U3 k0 {" q. d
child. Given the widespread and easy availability of
7 V, [7 n. ?# C+ T$ J8 \: dtestosterone gel and cream, we believe this is proba-1 B& ?9 l' `/ d0 A1 \- A
bly more common than the rare case report in the
# T9 v; \# \3 |3 lliterature.4/ Z! t, [ J- n8 y
Patient Report- I& h* u0 g* p! T% h: I- e0 f
A 16-month-old white child was referred to the
) @6 z! C6 H$ |4 N# zendocrine clinic by his pediatrician with the concern: X3 x- J# y7 O: `7 T M0 t) S
of early sexual development. His mother noticed
, p( q$ N5 W# U* F1 u; Nlight colored pubic hair development when he was
3 F; }. y [% r3 A, w. d+ VFrom the 1Division of Pediatric Endocrinology, 2University of9 Q: c- z7 @0 }! g" {
South Alabama Medical Center, Mobile, Alabama.) y1 ^" o7 e9 T% c8 L* d( X: `
Address correspondence to: Samar K. Bhowmick, MD, FACE,$ K m) f; i. s8 W7 w
Professor of Pediatrics, University of South Alabama, College of
) _ u& H8 C# ]: Z4 O. O" LMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;; }8 W' e- ~+ P# U# M% Q' Y
e-mail: [email protected]." ^& k9 K3 a @& W, j, v
about 6 to 7 months old, which progressively became7 L) a. P1 s0 K0 H% Y
darker. She was also concerned about the enlarge-
/ N' F# E2 o* w2 Q' s0 B$ l, H0 sment of his penis and frequent erections. The child
2 Q Q( T" a4 d) j! O& z6 Ywas the product of a full-term normal delivery, with8 I, T' }0 |- f* ?" I
a birth weight of 7 lb 14 oz, and birth length of
% C/ Y" e2 j6 |9 E' Z% o/ N& {20 inches. He was breast-fed throughout the first year
, y: h- Y6 {9 E5 _) Y1 F. {of life and was still receiving breast milk along with
6 E3 f! m2 ]& O6 z4 m8 H- Gsolid food. He had no hospitalizations or surgery,
# k3 ~6 e- D- d' A6 Zand his psychosocial and psychomotor development. U, u3 _: C( h4 L; ]* V/ s
was age appropriate.
7 Y) ]7 Y- B) z! EThe family history was remarkable for the father,1 K5 a( t0 z5 J7 H6 s x' Z
who was diagnosed with hypothyroidism at age 16,
( }) p, R: }: I4 \which was treated with thyroxine. The father’s2 B0 x- \/ a/ p/ ]4 B
height was 6 feet, and he went through a somewhat7 [: U* f$ X5 D+ ~
early puberty and had stopped growing by age 14.
) Z* ~5 S; T+ f8 ~The father denied taking any other medication. The1 O3 z5 j! h" x1 x
child’s mother was in good health. Her menarche
8 M" F7 o; }4 a0 _- f# p7 [; n1 C3 o5 twas at 11 years of age, and her height was at 5 feet
% D, ]* a6 P# q& t5 inches. There was no other family history of pre-0 K# e6 i& L( V
cocious sexual development in the first-degree rela-
3 r7 r! f5 i1 U1 Q2 ^" Ftives. There were no siblings.' f( G8 a. K2 p* L: }- E; L- D2 @
Physical Examination
) G% |- G) b: s! wThe physical examination revealed a very active,
8 ^4 r+ w0 v; {" dplayful, and healthy boy. The vital signs documented
3 m! V m. `# D1 Ea blood pressure of 85/50 mm Hg, his length was
2 Y$ G/ j* E, u3 U90 cm (>97th percentile), and his weight was 14.4 kg/ B2 W6 ?0 v4 a$ I& ?( E
(also >97th percentile). The observed yearly growth* K. E6 j4 L# P$ y/ ^
velocity was 30 cm (12 inches). The examination of
( b2 t L( A7 s5 n& C7 Jthe neck revealed no thyroid enlargement.
3 m E: G9 ^* ZThe genitourinary examination was remarkable for8 g% a. j! ?/ e+ K1 I; `) s
enlargement of the penis, with a stretched length of* z1 x: E8 {' k. R+ q
8 cm and a width of 2 cm. The glans penis was very well: V. M% H n2 D' b
developed. The pubic hair was Tanner II, mostly around
" w/ I k# g/ i/ `: r' J3 D540
; n1 E6 E; E) b) B* fat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
6 i, D9 v5 ^ z& B: l7 x0 Fthe base of the phallus and was dark and curled. The9 `, C! V6 H& P5 n
testicular volume was prepubertal at 2 mL each.7 q# ?1 h$ W g" Z
The skin was moist and smooth and somewhat
& v* _4 K5 j- R4 e' noily. No axillary hair was noted. There were no
( L- p* U, N+ z- n+ T' W# Gabnormal skin pigmentations or café-au-lait spots.$ O3 U; E& f( b( t
Neurologic evaluation showed deep tendon reflex 2+
2 k( r h [5 I% G2 p! \3 Tbilateral and symmetrical. There was no suggestion( ?& C8 d, a- U) M1 H. B
of papilledema.
" A6 b' d7 b* b7 [Laboratory Evaluation
8 h* s" w/ P& WThe bone age was consistent with 28 months by* @; z$ Y+ y; J7 |( K
using the standard of Greulich and Pyle at a chrono-
1 U# F: @3 c2 C5 G; a* u9 alogic age of 16 months (advanced).5 Chromosomal
$ B( J' F4 k; i! U% r9 Kkaryotype was 46XY. The thyroid function test8 q1 C8 q( H( K8 G+ O
showed a free T4 of 1.69 ng/dL, and thyroid stimu-
$ R3 P8 ] j2 u# Q, zlating hormone level was 1.3 µIU/mL (both normal).
' h; ^/ B; O' e9 I" N& a; lThe concentrations of serum electrolytes, blood# b; {% ~ I% |+ j0 Y* }' P3 ?. @
urea nitrogen, creatinine, and calcium all were
3 [; r! J$ e# W* nwithin normal range for his age. The concentration. _# o+ v( w4 Y2 \+ @) k% N4 C3 y
of serum 17-hydroxyprogesterone was 16 ng/dL; |9 b! c+ ^9 E: |. d3 `
(normal, 3 to 90 ng/dL), androstenedione was 20
7 U2 a5 z! @1 h. x/ ? ?8 P6 |ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-! o* }, \! M& W: f" T# I/ f& _
terone was 38 ng/dL (normal, 50 to 760 ng/dL),3 U( X5 j6 t3 ^- S, H: `: m
desoxycorticosterone was 4.3 ng/dL (normal, 7 to- g# c' C3 `/ T6 g, L2 n7 a. l
49ng/dL), 11-desoxycortisol (specific compound S)
3 I& N. H& `- S& \0 iwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
2 k1 `, R1 ~ ptisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
/ [' C) l7 h+ Z: @testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
4 u# p6 [9 }4 X# l$ s3 land β-human chorionic gonadotropin was less than, ~- H1 b/ w& S/ W. y
5 mIU/mL (normal <5 mIU/mL). Serum follicular
* L; y6 }& ^5 ^" d4 X h$ Tstimulating hormone and leuteinizing hormone) }9 Q5 y' } z: h @0 I
concentrations were less than 0.05 mIU/mL2 g* Q$ ^; w/ u+ l' j
(prepubertal).5 p7 g4 ^5 ]$ ~5 A, h0 w
The parents were notified about the laboratory" Z+ Z0 O, \9 b9 l
results and were informed that all of the tests were
1 u$ W# q" J! s2 {normal except the testosterone level was high. The
/ V/ ]/ [2 D6 q0 x! wfollow-up visit was arranged within a few weeks to" A" u' q; R: _0 _+ U. ?+ K4 G
obtain testicular and abdominal sonograms; how-
* S7 A+ {1 S5 z. \0 R4 e4 i0 Iever, the family did not return for 4 months.
* h( _5 i. B) K% H7 LPhysical examination at this time revealed that the
' k# p6 j& C( z; J3 Z, Q2 Dchild had grown 2.5 cm in 4 months and had gained- l2 ~/ k9 o9 ~9 Q
2 kg of weight. Physical examination remained) C3 W# Q- P* h/ L
unchanged. Surprisingly, the pubic hair almost com-. x; A4 x5 z5 r$ Y2 I7 g. L: c
pletely disappeared except for a few vellous hairs at n& X) ?( D4 V4 B' e |5 K2 K5 ] X ]
the base of the phallus. Testicular volume was still 2
" Q# p5 Z+ \" `& \. p. [# p1 K: zmL, and the size of the penis remained unchanged.3 x+ _' Z) j) q5 `4 p! _' }3 E8 q
The mother also said that the boy was no longer hav-$ _8 C- U* K7 i+ U$ t# c/ V! b C3 D
ing frequent erections.& I! `) `8 s% |
Both parents were again questioned about use of
( h( o; Z; q3 J* @! u4 Xany ointment/creams that they may have applied to
; I% E: P% N- ^$ h$ o% Fthe child’s skin. This time the father admitted the) c, i- G4 P0 ]+ b
Topical Testosterone Exposure / Bhowmick et al 541
3 n+ F, o) B2 @; N8 iuse of testosterone gel twice daily that he was apply-' T4 y. K2 d6 u, H: Y) S
ing over his own shoulders, chest, and back area for" M! W+ V K) v. F7 f! Z$ D
a year. The father also revealed he was embarrassed% l- M" t H/ v- ]% m0 O
to disclose that he was using a testosterone gel pre-
$ U8 p; T3 D7 W. m3 s* s0 I6 t1 ]+ bscribed by his family physician for decreased libido6 [0 i% B w( c, o6 j
secondary to depression.+ v) l( C0 J& A( k
The child slept in the same bed with parents.5 |0 l+ k4 x+ C* b2 d2 a4 X+ y o
The father would hug the baby and hold him on his
1 j' c; ~% W, Q/ Lchest for a considerable period of time, causing sig-6 o4 ~9 D1 A2 w
nificant bare skin contact between baby and father.
, g9 b% c: C# ?4 }The father also admitted that after the phone call,
* z: e. M1 j3 hwhen he learned the testosterone level in the baby" E+ Y- \1 U5 X& L" k P. i' w
was high, he then read the product information
/ m6 ~+ L. D0 o2 Wpacket and concluded that it was most likely the rea-
% B! o( x( K, rson for the child’s virilization. At that time, they6 {: {; G {& m3 R: ^0 O1 @1 A5 {- u
decided to put the baby in a separate bed, and the
) @7 }+ m* W+ _ u3 ^/ Dfather was not hugging him with bare skin and had
; i6 Q* q; q5 `# W- \; {+ wbeen using protective clothing. A repeat testosterone
; T2 k, D2 q4 M1 p: Utest was ordered, but the family did not go to the
* C, Z% Z, K- P% _laboratory to obtain the test.
8 l& K3 D! b: E9 q: M! v6 sDiscussion: ^( O- M o: d) i" _! c) P6 _- F
Precocious puberty in boys is defined as secondary+ t% m- f( E+ X) H) A+ s0 o" y. Y
sexual development before 9 years of age.1,4# U$ E' ~ Q, v$ f; \9 G& {
Precocious puberty is termed as central (true) when
: R9 d' V- a8 V' c, F; G( Fit is caused by the premature activation of hypo-/ |9 F; z6 |! K, ?' _; W
thalamic pituitary gonadal axis. CPP is more com-7 W( l) j% f( J4 G1 Q
mon in girls than in boys.1,3 Most boys with CPP
) I" E# I: C0 `+ z4 m8 ~may have a central nervous system lesion that is$ q& B6 o5 `: b ]8 g
responsible for the early activation of the hypothal-
0 a8 S1 Q8 X( S* [7 d: \! X% ~9 Jamic pituitary gonadal axis.1-3 Thus, greater empha-1 `5 C8 ^- u/ z$ o
sis has been given to neuroradiologic imaging in( ~3 p7 o; k3 V1 i: m
boys with precocious puberty. In addition to viril-/ ?' c' C( U7 @4 k& j
ization, the clinical hallmark of CPP is the symmet-8 R$ x8 E' j2 f0 v, K" D
rical testicular growth secondary to stimulation by
! k, Q" l' }0 L4 A( ~gonadotropins.1,33 T' |! [( D$ z+ H
Gonadotropin-independent peripheral preco-0 A( k: a* ?7 M" k% V- \8 l, @! k
cious puberty in boys also results from inappropriate* k! ?6 E' C, k+ L* z
androgenic stimulation from either endogenous or; @& P' v6 n) d; Q
exogenous sources, nonpituitary gonadotropin stim-+ J+ Y' ^" q- H$ q( B3 H. o
ulation, and rare activating mutations.3 Virilizing
: c: Y1 w [: r" y( T/ Z$ {congenital adrenal hyperplasia producing excessive. F2 N. Z. [" n5 @1 |9 d
adrenal androgens is a common cause of precocious
% ~8 F" \1 d8 N1 T! t4 l! Xpuberty in boys.3,4
' Q& w: q2 n4 s8 [: i' o" QThe most common form of congenital adrenal
" {* i4 V: T% H9 |% hhyperplasia is the 21-hydroxylase enzyme deficiency.) R Z2 I7 E" a2 J( Y% F
The 11-β hydroxylase deficiency may also result in
, f e& ^& N/ h* w8 r& d4 {" v4 |excessive adrenal androgen production, and rarely,
2 B' F# @' Q; Dan adrenal tumor may also cause adrenal androgen9 x7 Y- O( @8 E
excess.1,3; l5 e, S) G; G% Y
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from9 F2 T4 L/ l1 s, }( J
542 Clinical Pediatrics / Vol. 46, No. 6, July 20076 D$ {5 t' G* ^+ C
A unique entity of male-limited gonadotropin-$ o8 S, k! s& C1 H
independent precocious puberty, which is also known
5 B, |& E* r/ _4 Z, n: [as testotoxicosis, may cause precocious puberty at a9 O0 } [! W7 `- A" D- P- I
very young age. The physical findings in these boys
9 q% l, Q$ t* H+ f6 ?with this disorder are full pubertal development,; W5 J4 C8 }+ C+ Z
including bilateral testicular growth, similar to boys
' ?- k1 r/ A6 o% ] S6 Qwith CPP. The gonadotropin levels in this disorder3 B8 j; E6 M3 A" @4 q6 E
are suppressed to prepubertal levels and do not show
/ c0 F( v$ m& W$ l( I( W+ Tpubertal response of gonadotropin after gonadotropin-7 P2 S, q5 C# {
releasing hormone stimulation. This is a sex-linked$ U: J2 c) I' s
autosomal dominant disorder that affects only
% @9 B8 Q: k! g$ t8 Qmales; therefore, other male members of the family
' E/ B& z, k7 \2 lmay have similar precocious puberty.3$ R6 q( a: Z3 c% T
In our patient, physical examination was incon-; ]! d" ]* s0 M) ?3 g
sistent with true precocious puberty since his testi-+ X4 T$ b: l/ C4 Y1 A
cles were prepubertal in size. However, testotoxicosis" _9 {, e2 i- j! e3 j o6 P0 U4 g
was in the differential diagnosis because his father$ E' R$ B; S- o4 F" x& b, ]7 l
started puberty somewhat early, and occasionally,4 d& y0 J: ?. F! h5 {' A
testicular enlargement is not that evident in the: w- E( ~. `' G' [
beginning of this process.1 In the absence of a neg-
* v7 X# i3 |+ wative initial history of androgen exposure, our1 E @4 U2 d% X! [& f7 z! o! |
biggest concern was virilizing adrenal hyperplasia,5 r* A/ q* L3 H& i: M7 H8 _
either 21-hydroxylase deficiency or 11-β hydroxylase6 f" A1 ?3 C8 G( z: Q
deficiency. Those diagnoses were excluded by find-/ w; f. p6 ^- Y6 q9 n X5 E
ing the normal level of adrenal steroids.
+ k! L/ H$ n. ~ _The diagnosis of exogenous androgens was strongly
5 w: h' g& e# [ [ F* Bsuspected in a follow-up visit after 4 months because
) z) Z' I" x" D# _" V* y. Rthe physical examination revealed the complete disap-9 S- J2 C' p$ t5 k" m; `
pearance of pubic hair, normal growth velocity, and
l; z1 h1 q4 B w! adecreased erections. The father admitted using a testos- S5 W. T5 r- R, n& r8 a
terone gel, which he concealed at first visit. He was
# \& b9 p2 }' u, fusing it rather frequently, twice a day. The Physicians’5 C; d, [- O% d9 m! g9 Q
Desk Reference, or package insert of this product, gel or
5 K' R d9 t. v4 Dcream, cautions about dermal testosterone transfer to
% d9 r$ i2 D, m) T% g' k; [$ F# dunprotected females through direct skin exposure.2 |8 w+ y! B7 D! @4 s+ H
Serum testosterone level was found to be 2 times the
) i& f+ Y% N! G9 M; s3 qbaseline value in those females who were exposed to
7 i0 }6 I9 b9 m) _; F Eeven 15 minutes of direct skin contact with their male
9 ?% b8 x' V" ?# z+ Y: w7 y9 jpartners.6 However, when a shirt covered the applica-5 p) E3 c) _0 u3 r5 C( h$ X% \* Y
tion site, this testosterone transfer was prevented.8 D" c% q; ~( U4 a
Our patient’s testosterone level was 60 ng/mL,
' i W6 a# ]7 \8 j+ uwhich was clearly high. Some studies suggest that( ]; x( m8 g7 D' f! j, v1 K
dermal conversion of testosterone to dihydrotestos-
" h6 J3 a ]1 d! n! B- H4 F m7 f7 Kterone, which is a more potent metabolite, is more
* I& j. Y4 O- A9 O0 a$ X Qactive in young children exposed to testosterone6 g4 k0 Y3 \* a9 x$ a
exogenously7; however, we did not measure a dihy-7 O( j) m8 }4 u$ M
drotestosterone level in our patient. In addition to
, c2 \. q6 L X% ]virilization, exposure to exogenous testosterone in
3 P! N0 \# ?0 o% R( l0 h# mchildren results in an increase in growth velocity and
/ P9 w) c4 c2 T {advanced bone age, as seen in our patient.+ X* E3 B5 g* f% x. x2 N4 j+ Y) r
The long-term effect of androgen exposure during2 m4 u% W! g, M# G
early childhood on pubertal development and final, `5 G- p, g3 E0 i" k, c9 }) w2 P
adult height are not fully known and always remain
: z* S8 J. p0 d+ Q' E0 X! B2 ia concern. Children treated with short-term testos-6 e- r; o3 M8 Y' W3 y, D u- h. V
terone injection or topical androgen may exhibit some
9 Z2 o" j3 q# n5 Q Q7 [7 E6 sacceleration of the skeletal maturation; however, after
4 S ~) j2 P$ I, Ocessation of treatment, the rate of bone maturation1 b( m& u) ]- t( z" ~
decelerates and gradually returns to normal.8,90 T% q( O' w, n- D- q) d
There are conflicting reports and controversy
E6 K& R9 O* E; s/ p! d: n3 Xover the effect of early androgen exposure on adult
$ S4 x+ s6 F) p+ @7 j4 i0 M# D zpenile length.10,11 Some reports suggest subnormal& F6 `2 D% }) {( O2 ~, u
adult penile length, apparently because of downreg-& j8 @4 l3 g4 w$ x$ s, }1 [
ulation of androgen receptor number.10,12 However,
7 _1 |8 u& ^4 ]1 P) l9 r/ ~Sutherland et al13 did not find a correlation between: k# Z; X. M1 b, P
childhood testosterone exposure and reduced adult
2 n; O6 [! F, g4 I: Z' F1 t6 Npenile length in clinical studies.) H( u" ~6 t G" q- D7 C# @
Nonetheless, we do not believe our patient is
( |/ z2 R- |# g. b5 jgoing to experience any of the untoward effects from% \ i) F) A/ j0 z7 B1 P7 c
testosterone exposure as mentioned earlier because
* D) @6 y: B5 a( g, f& dthe exposure was not for a prolonged period of time.
8 _, D7 H; [* _) `Although the bone age was advanced at the time of
. K3 P8 o! p* L8 C& Ddiagnosis, the child had a normal growth velocity at* S& W1 K2 B0 R Z2 k7 M
the follow-up visit. It is hoped that his final adult
9 \) j+ Z8 P2 T3 T1 P! theight will not be affected.
1 x2 U. i+ j7 X3 q5 JAlthough rarely reported, the widespread avail-
% k9 b- ^; C& f0 B3 Jability of androgen products in our society may
. a- O- h) |5 ~' ?+ L: mindeed cause more virilization in male or female7 |( H" d% _8 B0 N; A w* E
children than one would realize. Exposure to andro-9 @ N# h, f2 t9 G7 w
gen products must be considered and specific ques-
/ o% p+ h+ m7 b2 ltioning about the use of a testosterone product or& ^& \+ R. w& o; s2 g9 M! ?" A# Y! b
gel should be asked of the family members during. J/ n9 Q& B, x1 p7 {* V- o
the evaluation of any children who present with vir-0 f _5 F$ f* _
ilization or peripheral precocious puberty. The diag-! {' g, h5 \0 D+ f5 L: G! d
nosis can be established by just a few tests and by
6 [" b. m7 l- uappropriate history. The inability to obtain such a
0 m: z9 M! H; C' \6 K: Nhistory, or failure to ask the specific questions, may1 K2 X: l0 c- P3 y2 a/ i3 x5 K' K
result in extensive, unnecessary, and expensive; `5 M3 O/ l, Z! A( O5 S
investigation. The primary care physician should be
: s- ~" L1 F D" N& Q+ baware of this fact, because most of these children
, z' f5 g6 H) H0 D5 Xmay initially present in their practice. The Physicians’
) F. R* b& J2 R4 F4 m. WDesk Reference and package insert should also put a
; A0 }# i% O: I* E9 @warning about the virilizing effect on a male or
- \0 {5 v' k5 p8 W/ U3 I" b( mfemale child who might come in contact with some-
* h3 K7 q' O* G* pone using any of these products.9 L- C: f3 @3 g/ S
References
! L+ |+ o e" \. z; W B+ q1. Styne DM. The testes: disorder of sexual differentiation, \& m+ X( L- q' S* \5 M
and puberty in the male. In: Sperling MA, ed. Pediatric3 C4 e( D/ t8 |- `
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;- W& G8 V% A: f' v
2002: 565-628.
) i/ `9 z- ^/ U9 x2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious7 G; h; y; w4 s! f' z& L* _
puberty in children with tumours of the suprasellar pineal |
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