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Sexual Precocity in a 16-Month-Old! M8 s1 G4 q# c
Boy Induced by Indirect Topical8 e& b! k7 }% ]& B; ]
Exposure to Testosterone
3 d: G. L, L/ |1 z0 }- t( [Samar K. Bhowmick, MD, FACE,1 Tracy Ricke, MD,2
) t% X$ P: B8 `and Kenneth R. Rettig, MD1' }& H0 s1 v- {1 m \. l
Clinical Pediatrics
4 n8 ?. _' L$ S2 M! QVolume 46 Number 6
]+ f; }1 a7 x+ r0 q: _- ]+ VJuly 2007 540-543+ w& { v! {+ P
© 2007 Sage Publications5 N! L) R' c Q! p3 K3 C3 E- T; Q' R& f: t
10.1177/00099228062966512 C8 A; _$ h ^! Z- F& U
http://clp.sagepub.com* Y, d/ A% y i. a- U+ \$ D
hosted at
9 \+ M( P; d; c. M: bhttp://online.sagepub.com
+ f; t6 ?9 @- ]$ p/ r0 N% U) fPrecocious puberty in boys, central or peripheral,
2 O: K! o/ t) j6 F/ O8 @# ^is a significant concern for physicians. Central3 H' a) O3 T u
precocious puberty (CPP), which is mediated) @# v5 b. q: X$ J
through the hypothalamic pituitary gonadal axis, has' q% C, ?; j( u# {' X
a higher incidence of organic central nervous system
* S# i" {+ I, j& T! F) x+ ~lesions in boys.1,2 Virilization in boys, as manifested9 c( a" N3 e5 S4 L- J4 r
by enlargement of the penis, development of pubic3 e! i6 W! S8 E3 B' l
hair, and facial acne without enlargement of testi-% H% K# J% [. B! V5 N4 i3 b
cles, suggests peripheral or pseudopuberty.1-3 We
0 j( k& j/ w* Y4 ~report a 16-month-old boy who presented with the
8 Q0 j* f( y; O f( e- jenlargement of the phallus and pubic hair develop-
9 B* z. g0 j+ e( J* p* j1 z% n; _; _$ Zment without testicular enlargement, which was due5 q' g T, O8 M
to the unintentional exposure to androgen gel used by
$ a3 P0 m& F$ y' f6 G- U* S# K G. bthe father. The family initially concealed this infor-
! l( k' b* E4 O. u. o( lmation, resulting in an extensive work-up for this
2 k9 O: H6 I! Z" l/ Zchild. Given the widespread and easy availability of
% ^( i9 m" x: ~4 { C G) a. R2 W" htestosterone gel and cream, we believe this is proba-8 D% U( ~ q; R/ G
bly more common than the rare case report in the
* k5 \: k; C6 P+ e( |0 Rliterature.4
) G6 |; X6 }3 M7 h: P2 }1 hPatient Report
, l. a) U: }$ B" B1 cA 16-month-old white child was referred to the
0 ]2 U3 W h+ U9 `* [9 x- }endocrine clinic by his pediatrician with the concern. }* [* V( W f0 c1 Q5 ^3 Q
of early sexual development. His mother noticed( x3 W0 h1 D/ e2 v3 t
light colored pubic hair development when he was) J) d6 {% Z9 Y( R
From the 1Division of Pediatric Endocrinology, 2University of( j+ T! p! R T) s8 I# t
South Alabama Medical Center, Mobile, Alabama.
- ^+ V1 P# e0 ] _Address correspondence to: Samar K. Bhowmick, MD, FACE,
5 W* k3 W- m" K8 B7 \Professor of Pediatrics, University of South Alabama, College of
+ ~" ]3 K6 y5 q2 J9 G7 lMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
+ L& H! \+ ^$ G. |; Q* |e-mail: [email protected].
" `; ?, B% _( W5 \, Rabout 6 to 7 months old, which progressively became( R- t1 j6 y# _, ^ y. w
darker. She was also concerned about the enlarge-
: \2 i2 Y& r& t8 I- Dment of his penis and frequent erections. The child3 |- {0 I3 U; Q; {# `
was the product of a full-term normal delivery, with
+ ~1 L5 t! k. e( Za birth weight of 7 lb 14 oz, and birth length of
; C4 {* X/ N! l* I20 inches. He was breast-fed throughout the first year$ J0 w% o" Y, \# q. d0 X C
of life and was still receiving breast milk along with
3 o! h0 e3 S$ S f) Jsolid food. He had no hospitalizations or surgery,
6 @) p6 D. f+ g* ?+ Nand his psychosocial and psychomotor development
1 \3 X$ P! A. V' F1 k2 |" m0 ^was age appropriate." E! ]7 \. F5 M( K
The family history was remarkable for the father,
& Z$ I; [: k7 f" [who was diagnosed with hypothyroidism at age 16,6 A* S( y7 j8 f8 b! _3 U6 m
which was treated with thyroxine. The father’s1 {. b$ n( _$ ^5 L& z
height was 6 feet, and he went through a somewhat
/ E$ w$ @0 `% v3 h+ S+ R! E, `early puberty and had stopped growing by age 14.4 J" G5 [; v6 P& y
The father denied taking any other medication. The
4 f5 b9 ]! J9 xchild’s mother was in good health. Her menarche4 Z' b* ?% q( V) u6 A# s/ Y
was at 11 years of age, and her height was at 5 feet. ^) Z' G: M; A+ r( ]/ A/ m
5 inches. There was no other family history of pre-7 B6 L2 @% U& L$ x
cocious sexual development in the first-degree rela-& r; V$ R$ E# ~# v/ f* S' A! ]3 B
tives. There were no siblings.
0 h+ W* l0 c- n4 ZPhysical Examination7 _, M8 V6 h5 e# d* H, b0 w
The physical examination revealed a very active,
3 W6 G- g6 a V" E* c8 ~+ U2 ]& Uplayful, and healthy boy. The vital signs documented
) i! l5 H( y$ v- v3 W0 P% Pa blood pressure of 85/50 mm Hg, his length was5 d1 F7 f Q, I
90 cm (>97th percentile), and his weight was 14.4 kg1 d5 q8 I+ M/ X
(also >97th percentile). The observed yearly growth' O% y4 ?. r4 E
velocity was 30 cm (12 inches). The examination of( C4 j& w/ M, y& o4 D0 \
the neck revealed no thyroid enlargement.& I1 t9 h5 w4 ]$ R
The genitourinary examination was remarkable for
+ z" p. _; o* j0 {8 E3 g; eenlargement of the penis, with a stretched length of
" L, u) c/ T* u" v" Y6 L8 cm and a width of 2 cm. The glans penis was very well& L9 q2 T2 C; w) V1 f9 I
developed. The pubic hair was Tanner II, mostly around
1 w0 ` J$ {5 n+ M5404 o6 k( a" I' ~: @* v" X
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
1 F T& A: o8 N' |. zthe base of the phallus and was dark and curled. The
8 P9 k! v! O3 qtesticular volume was prepubertal at 2 mL each.; u8 g- g, A- I2 A9 {" l, Z
The skin was moist and smooth and somewhat
' A) `: ?( M. c! w% ioily. No axillary hair was noted. There were no) U3 v& H( g/ ]8 y
abnormal skin pigmentations or café-au-lait spots.
9 Y' ~0 w% }$ U; mNeurologic evaluation showed deep tendon reflex 2+# {4 }% e C. f4 c- ]/ P
bilateral and symmetrical. There was no suggestion
% `1 N+ U; F; j5 V7 m# ^$ Nof papilledema.2 E- w! D$ K+ P' o/ P3 n: \1 b+ F
Laboratory Evaluation& b( q% C$ ~& s4 D6 _' P
The bone age was consistent with 28 months by: K4 H) N1 S) i0 y% P6 |! |
using the standard of Greulich and Pyle at a chrono-$ A* V; ], n# {: a
logic age of 16 months (advanced).5 Chromosomal: h) H3 {: X ~, Q! e( p, E7 m! x
karyotype was 46XY. The thyroid function test- I, O8 a- W" E) W6 P4 G6 {3 l
showed a free T4 of 1.69 ng/dL, and thyroid stimu-
4 ]; n% }1 f& g. C; `5 f8 ~lating hormone level was 1.3 µIU/mL (both normal).
* Q" [: p: |% PThe concentrations of serum electrolytes, blood
+ X- j- c+ J2 K% furea nitrogen, creatinine, and calcium all were8 p5 q7 Y% s0 \5 x5 G
within normal range for his age. The concentration, O7 L9 z6 O$ P; K) w6 @; \ m/ F# B
of serum 17-hydroxyprogesterone was 16 ng/dL
2 }) M5 P+ L% X* A8 I3 d) l(normal, 3 to 90 ng/dL), androstenedione was 20
- U6 J* U7 I' ]& m/ C& ]7 c! _ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-" K2 I) h' B6 j
terone was 38 ng/dL (normal, 50 to 760 ng/dL),
3 `3 a6 _) i% Adesoxycorticosterone was 4.3 ng/dL (normal, 7 to! G# W7 z$ m: o: @) i, C7 ?
49ng/dL), 11-desoxycortisol (specific compound S)9 y$ \, h0 v. |& O0 l0 R0 j
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-" n7 H) G+ f v# H6 g( V
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total3 C+ _: O `1 I
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
3 m7 R. u3 Y8 A9 q* g2 Q0 hand β-human chorionic gonadotropin was less than
! T; D# {3 m- j" V/ ^7 Z6 p/ i5 mIU/mL (normal <5 mIU/mL). Serum follicular
+ w( `3 C; ]- r7 w1 z7 Q& F$ e6 X1 Astimulating hormone and leuteinizing hormone
6 g+ L# e2 A) w* S7 Xconcentrations were less than 0.05 mIU/mL# V: f+ y( u% z4 [& P: Q, F
(prepubertal).
6 }6 F- e* M$ m. B5 ^8 s' `The parents were notified about the laboratory( T9 x7 f- _. H- w0 I9 S1 W5 p
results and were informed that all of the tests were
1 _+ {2 U- o2 L. @& \- anormal except the testosterone level was high. The8 f$ L5 S$ \ U* ~! E6 W$ }
follow-up visit was arranged within a few weeks to
- b/ |& k1 |4 m/ I" wobtain testicular and abdominal sonograms; how-* d2 o* _! y- i( u
ever, the family did not return for 4 months.+ A" f- t7 Q( a" C
Physical examination at this time revealed that the/ t6 @; a6 \2 o9 i2 x& t" ^9 |1 r B, @
child had grown 2.5 cm in 4 months and had gained
% z; s" Y3 P) C7 M4 U4 Z2 kg of weight. Physical examination remained0 S. m1 U4 {! k. l4 f( B1 H4 H
unchanged. Surprisingly, the pubic hair almost com-& j* i* y0 K" B: t( k" x2 v
pletely disappeared except for a few vellous hairs at
: ^ {' V# |6 B* V Pthe base of the phallus. Testicular volume was still 23 O! y6 ^/ L3 Z. |9 p( |8 s
mL, and the size of the penis remained unchanged.
( I/ @4 x0 ~$ w' y# YThe mother also said that the boy was no longer hav-
/ ^4 g$ D2 j! Eing frequent erections., e$ V1 V+ r0 h. w
Both parents were again questioned about use of$ f1 E# Q& b& E4 e, W G9 P
any ointment/creams that they may have applied to
7 y G; \; Z0 j4 ~the child’s skin. This time the father admitted the
" O* P, P- ]8 \- t+ GTopical Testosterone Exposure / Bhowmick et al 5414 u1 D, M4 v. R6 h6 m
use of testosterone gel twice daily that he was apply-
9 W1 X% s4 |+ I% A u2 Cing over his own shoulders, chest, and back area for
5 ~& H/ h6 W$ _6 L& t/ r, ga year. The father also revealed he was embarrassed
1 c9 g; N! q8 v1 U$ P+ e* Jto disclose that he was using a testosterone gel pre-& c5 D0 t* P; ]1 _7 `( Q/ m$ k9 n
scribed by his family physician for decreased libido9 O: S0 t& {" i
secondary to depression.
- P# ? J5 X5 G Q7 W' ?The child slept in the same bed with parents.
" D, ~4 w6 m& N( G; }The father would hug the baby and hold him on his# C, v- e9 O2 n4 V7 q8 M) ?
chest for a considerable period of time, causing sig-$ p' A' t* l9 x. i
nificant bare skin contact between baby and father.
2 K7 y: r0 a3 X9 k" U) O, `The father also admitted that after the phone call,
5 I. h2 D8 d: [/ ?2 N; W' x/ rwhen he learned the testosterone level in the baby
1 F$ I& n. F$ i0 t# k" ?% x4 v6 Jwas high, he then read the product information
: f! T, _2 x$ P3 upacket and concluded that it was most likely the rea-9 s+ S+ Z: v6 e* u
son for the child’s virilization. At that time, they
2 Z* {( M/ K! S. Z# r7 _" Udecided to put the baby in a separate bed, and the
9 u* t) ?& W' R( O+ Z/ Ifather was not hugging him with bare skin and had7 I1 f% @% i- ^! g9 n {9 Y# ~
been using protective clothing. A repeat testosterone; S" g3 f Q7 P2 N
test was ordered, but the family did not go to the W9 a- U) M/ B
laboratory to obtain the test.% ` {( D2 d N0 o6 c2 ?2 p
Discussion0 n5 |/ o( ?1 E7 J+ g( s" q, J
Precocious puberty in boys is defined as secondary
: Q5 @8 r/ }6 D* _! D9 y( jsexual development before 9 years of age.1,48 q o9 |; Q8 Q. |- y7 O
Precocious puberty is termed as central (true) when2 k- i, T3 o) r4 m+ ?
it is caused by the premature activation of hypo-
/ ~# P# ^- z- Y9 |* \& e+ [/ Zthalamic pituitary gonadal axis. CPP is more com-
% u2 b$ s5 H( i0 ]/ A) P$ Dmon in girls than in boys.1,3 Most boys with CPP! M& I1 P) [) N6 F3 e( t
may have a central nervous system lesion that is
: a# U, e$ S" E' ]responsible for the early activation of the hypothal-3 U+ R$ J/ x6 l [
amic pituitary gonadal axis.1-3 Thus, greater empha-
. D5 `( b# f& y* ~sis has been given to neuroradiologic imaging in
1 r: ]$ T8 p3 vboys with precocious puberty. In addition to viril-
* f! P" w0 `1 v& s2 [% cization, the clinical hallmark of CPP is the symmet-1 ]0 a/ S1 w; y( x2 b! G
rical testicular growth secondary to stimulation by
! b; T! H3 x, p0 U- z. Zgonadotropins.1,3
7 d( Y/ Z3 b( u5 q; d6 N2 dGonadotropin-independent peripheral preco-2 R9 E5 _$ i% y0 I
cious puberty in boys also results from inappropriate+ s2 m1 t* f9 e. f5 J: v; i
androgenic stimulation from either endogenous or/ y; k0 ^5 u6 i, N6 i/ R
exogenous sources, nonpituitary gonadotropin stim-8 y' A, S+ r4 _
ulation, and rare activating mutations.3 Virilizing
& C. _; o. V1 J% R4 O& t! ]$ Econgenital adrenal hyperplasia producing excessive3 e* ?( I- _7 e* ?" U
adrenal androgens is a common cause of precocious. S. S6 ` O) \& A5 F: ~+ z2 Q
puberty in boys.3,47 \5 w' O7 e6 ~! p1 V _& C" l
The most common form of congenital adrenal
# X7 t0 P# X. q: u9 u Whyperplasia is the 21-hydroxylase enzyme deficiency.( W) }) e0 B& ?, ~$ S1 H/ e, j* p0 r W
The 11-β hydroxylase deficiency may also result in
2 i8 _4 ~+ |7 o+ s$ x9 C. _7 _excessive adrenal androgen production, and rarely,
% M8 d% r/ | man adrenal tumor may also cause adrenal androgen' I0 c$ ]7 G# U& Z# J ]
excess.1,3
: K, H2 }; q( p F' @4 _9 Aat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from, N' C4 l% D9 u& H0 i! u5 x; j
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
0 W2 q+ s: I3 _& D- ]4 fA unique entity of male-limited gonadotropin-
' Z( m7 B0 @! Y- nindependent precocious puberty, which is also known
( T6 d8 d5 K# J m5 \as testotoxicosis, may cause precocious puberty at a& L) x( I+ o3 V: W9 h
very young age. The physical findings in these boys6 j! W2 p3 z% y+ v) @% \
with this disorder are full pubertal development,% m' \" n) H$ E; Q
including bilateral testicular growth, similar to boys2 n# P# Q4 R- L: z
with CPP. The gonadotropin levels in this disorder
# y5 l5 k) r: G7 `are suppressed to prepubertal levels and do not show
3 J# E4 s/ t. s: f/ `! v; npubertal response of gonadotropin after gonadotropin-! r9 Z0 v& Q$ s" z, b7 P) t
releasing hormone stimulation. This is a sex-linked
: c @( L) Q. x+ Q% Z. {autosomal dominant disorder that affects only, f3 ~( r# t# w2 t+ l: v
males; therefore, other male members of the family/ r( b m2 K$ u) B1 c* a& |
may have similar precocious puberty.3 e( E) u* F8 v1 z; H
In our patient, physical examination was incon-
$ O' P8 Q. E- B! tsistent with true precocious puberty since his testi-. p& T8 _8 h2 F
cles were prepubertal in size. However, testotoxicosis0 ]2 d1 Z1 c( B( Y* l1 {
was in the differential diagnosis because his father9 \, i3 O# Z, v
started puberty somewhat early, and occasionally,
& [% Z* \ s4 Z3 Q$ {testicular enlargement is not that evident in the% g" o* ^0 X4 W
beginning of this process.1 In the absence of a neg-
9 U; v4 A f! U) n4 G% K1 gative initial history of androgen exposure, our% \* ?5 m/ i' m$ T
biggest concern was virilizing adrenal hyperplasia,! k. _/ ^7 n1 {1 q& @
either 21-hydroxylase deficiency or 11-β hydroxylase
5 J. D9 {% G# E. S! T* g/ T/ ]deficiency. Those diagnoses were excluded by find-! A; l' z2 h" `; D8 l* s/ s5 f9 B& H
ing the normal level of adrenal steroids.' x, u, \! D5 I9 Z! }
The diagnosis of exogenous androgens was strongly) e) s9 M% W, R, }' Q
suspected in a follow-up visit after 4 months because
7 J& H9 H/ K) w/ X8 T( F3 g9 l9 i' q' ^the physical examination revealed the complete disap-+ y" H( b2 D1 L& d
pearance of pubic hair, normal growth velocity, and
! c* d6 F2 X! e/ O, Ndecreased erections. The father admitted using a testos-
8 H3 Q. b# ]" N0 K h& }8 a9 W3 Aterone gel, which he concealed at first visit. He was
& Y: N' j+ X! O o( Musing it rather frequently, twice a day. The Physicians’6 o% G+ T+ O% q! Z7 g+ i1 [9 v
Desk Reference, or package insert of this product, gel or6 T" p9 I" b) F; V+ @/ r4 R& b
cream, cautions about dermal testosterone transfer to
3 y- \2 O8 ^3 E7 Sunprotected females through direct skin exposure.
$ ~3 o6 s1 _9 r$ x" vSerum testosterone level was found to be 2 times the- x7 H% p- _- Y% ?
baseline value in those females who were exposed to
& H, G7 m2 i' S3 V `even 15 minutes of direct skin contact with their male9 r2 b1 ^2 E+ M8 V% Y4 O
partners.6 However, when a shirt covered the applica-7 q( U: c% \) M
tion site, this testosterone transfer was prevented.0 d# X/ |0 [: @0 C" }6 B
Our patient’s testosterone level was 60 ng/mL,
# V- R) B& _ D4 V6 X& B! awhich was clearly high. Some studies suggest that2 J: B1 x f9 T
dermal conversion of testosterone to dihydrotestos-' V, f/ Z3 ?& T" M
terone, which is a more potent metabolite, is more- S; @0 [" M( F2 K. c- \0 n7 ^
active in young children exposed to testosterone
) Q9 |3 n: j, Z2 N* B2 P Mexogenously7; however, we did not measure a dihy-. b0 v* ^6 S/ t& y, e
drotestosterone level in our patient. In addition to
% r9 |) ~& N, [/ {& Y$ y/ K$ w- t: l, Kvirilization, exposure to exogenous testosterone in
+ N5 e. R$ t/ M6 u# [# f1 ^! Zchildren results in an increase in growth velocity and* r Z. U' X( P" Y& W
advanced bone age, as seen in our patient.
7 f5 G8 b* W/ @+ n2 l, m" |. IThe long-term effect of androgen exposure during
* n' h: a# s7 s9 \4 Mearly childhood on pubertal development and final/ c5 A6 R9 B; l+ X0 ]. L
adult height are not fully known and always remain
$ t& N7 p0 B b& N+ `1 W8 Oa concern. Children treated with short-term testos-2 N) x W C5 }! C2 y
terone injection or topical androgen may exhibit some
' D0 |0 |+ Y/ s9 l$ E' I4 gacceleration of the skeletal maturation; however, after6 n" `- B0 ]1 q% [/ A
cessation of treatment, the rate of bone maturation
/ w c) H) y- q. I$ ?. ]decelerates and gradually returns to normal.8,9
]7 N" p# _7 [1 X/ v5 O/ \There are conflicting reports and controversy* R+ T, H* j1 p) `; G" g- I
over the effect of early androgen exposure on adult1 p4 E- p* U/ }5 z8 P8 g
penile length.10,11 Some reports suggest subnormal
4 L5 G8 Q6 e% y# X+ Wadult penile length, apparently because of downreg-
/ L' X; `. {6 D; y' y: Iulation of androgen receptor number.10,12 However,! u. J8 P6 a$ i7 |: H: ]
Sutherland et al13 did not find a correlation between
' w2 L: k/ j1 T# l# b; L2 uchildhood testosterone exposure and reduced adult
5 b5 l# S3 H0 v$ U0 J% O/ _: }penile length in clinical studies.
# f; `$ t" G) f2 E' FNonetheless, we do not believe our patient is+ d5 i% u5 G/ Q6 z" c; j9 i3 _
going to experience any of the untoward effects from- @6 E& J3 [2 f, E3 Z2 i
testosterone exposure as mentioned earlier because
) f" ?. Y/ t4 V* F* n: t G7 Nthe exposure was not for a prolonged period of time." `8 {% O2 G, ?: M
Although the bone age was advanced at the time of# q# s( u0 G" |/ T ?
diagnosis, the child had a normal growth velocity at2 w3 b. _/ N- b4 `" u1 t8 P6 S
the follow-up visit. It is hoped that his final adult
8 z" J" _" G7 {1 ?: \' L. oheight will not be affected.
/ }/ [- ]. T/ }, f$ W, t% Y/ EAlthough rarely reported, the widespread avail-4 n. Q, _" n! }( C: K$ P4 G. A
ability of androgen products in our society may
! t) u q* A% i, Qindeed cause more virilization in male or female4 j, A1 w" m* G0 f K x
children than one would realize. Exposure to andro-
3 K6 n7 y4 z# D" j9 o: O" ]; hgen products must be considered and specific ques-
; Y" R8 m8 H6 p5 Q5 P- F7 |7 rtioning about the use of a testosterone product or
3 w+ w; S5 I {( _! |gel should be asked of the family members during
+ v5 o, O- Z: M4 Y; p- jthe evaluation of any children who present with vir-
9 f, O1 G) k2 a. i0 ]ilization or peripheral precocious puberty. The diag-
- u, V1 S' w1 D5 _' j+ Q- u1 Knosis can be established by just a few tests and by
$ i' R8 ]+ x4 a) C; \( c; R& D& Pappropriate history. The inability to obtain such a& n j2 k9 f0 A, B6 V
history, or failure to ask the specific questions, may
6 F1 k- Y# p$ ^/ u' [; [0 ~result in extensive, unnecessary, and expensive
+ K8 d0 k( j1 ?/ s) E1 [* g0 }investigation. The primary care physician should be
) R" O: x7 |) u& z; r% z# ^( ` N. uaware of this fact, because most of these children5 P" ]8 E8 X0 f- D
may initially present in their practice. The Physicians’1 ^& w" h/ F8 u( n$ J! I* r
Desk Reference and package insert should also put a3 j9 v& p0 p# g0 P
warning about the virilizing effect on a male or8 L& E$ `5 K; c1 D2 d% K) ?8 Y
female child who might come in contact with some-
* v4 I$ S- W, L0 t. Hone using any of these products. s7 S8 i y2 f' r# Y0 F' z8 c+ X: a
References( f! H; |6 s! G# ]4 c1 n
1. Styne DM. The testes: disorder of sexual differentiation
0 L* h( H# o% l; [, m0 I9 F# rand puberty in the male. In: Sperling MA, ed. Pediatric2 n9 Q7 m% \8 n7 {' N& r
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
4 I* B, m. Q. h% O* w' I k' R2002: 565-628.
6 x! j/ S# P9 J( v/ ^/ H; [3 i- r2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
/ {) ~6 _. t2 F% @puberty in children with tumours of the suprasellar pineal |
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