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Sexual Precocity in a 16-Month-Old
2 L( x) P0 b( o; \; d3 D: [Boy Induced by Indirect Topical1 I1 j: i* B5 |3 h
Exposure to Testosterone; i6 @7 a) w) v+ f0 l$ t! P
Samar K. Bhowmick, MD, FACE,1 Tracy Ricke, MD,2
& B# L; g* _& s- T# P: r- r, fand Kenneth R. Rettig, MD1
0 P. _1 L: O. E, pClinical Pediatrics
1 F7 S. w* s* t0 D3 X( X+ \6 hVolume 46 Number 6
2 F3 q* N( Q N' W" |7 F4 iJuly 2007 540-543; @5 A% k# Q4 b c/ R- h8 X( }) d
© 2007 Sage Publications
c0 Q' \6 J; U1 O4 n* R/ ?9 v10.1177/0009922806296651
; u. R: @3 P; [http://clp.sagepub.com
6 r0 G0 L6 _, V, m/ G% bhosted at
$ @; e: _0 ]% A" Y, _( u# uhttp://online.sagepub.com6 z% [/ o6 `8 `. T5 s
Precocious puberty in boys, central or peripheral,
3 d$ j" J' O& n2 u$ O, bis a significant concern for physicians. Central m. v4 _7 G p" w: M% Y
precocious puberty (CPP), which is mediated4 i' U$ H5 {; H* `2 _' Y
through the hypothalamic pituitary gonadal axis, has
2 e8 Z6 d% I6 C+ |a higher incidence of organic central nervous system; r5 N; r- W( U! m2 W2 o1 b
lesions in boys.1,2 Virilization in boys, as manifested
" n7 Z$ N2 G5 n: r @8 qby enlargement of the penis, development of pubic1 s# s/ }: A$ Z. u. ~2 M; U7 z, E( e
hair, and facial acne without enlargement of testi-4 w8 B# g! G$ m2 D1 ?0 g' [
cles, suggests peripheral or pseudopuberty.1-3 We
; J& `& [% V2 T* oreport a 16-month-old boy who presented with the
5 k' G: J2 y. c: `& Kenlargement of the phallus and pubic hair develop-
" ^- |; Z$ i; z% [ment without testicular enlargement, which was due
* } M; [& ^1 tto the unintentional exposure to androgen gel used by3 p& ?0 T* z1 e, x0 y- R' v
the father. The family initially concealed this infor-
6 L& Y. ?, D h1 [mation, resulting in an extensive work-up for this) h2 P u7 `2 Q1 M# i
child. Given the widespread and easy availability of- ~$ j$ H5 g3 p$ n- |" |& i
testosterone gel and cream, we believe this is proba-+ i% Z, q. J1 M. o
bly more common than the rare case report in the
* N9 r4 Q% j, q- y! O* o, wliterature.4
4 p$ K# r5 }, V7 w; l. R. PPatient Report
8 O, y* M! A% d" t, U- IA 16-month-old white child was referred to the
1 Z' k5 F4 z0 y# ~* k: l' Rendocrine clinic by his pediatrician with the concern
3 m) Y. ]" L( g- d) K& Zof early sexual development. His mother noticed
+ a- B7 E4 S3 Y# @# ~, t$ a# dlight colored pubic hair development when he was0 E4 D( s0 V1 o; o
From the 1Division of Pediatric Endocrinology, 2University of
, K# G+ i7 f% V9 w4 J- h N# H, T0 B* pSouth Alabama Medical Center, Mobile, Alabama.
' y0 k6 w$ ] |' mAddress correspondence to: Samar K. Bhowmick, MD, FACE,* F/ r0 N. P% W" P7 w3 d$ z( R
Professor of Pediatrics, University of South Alabama, College of
4 h, x" r' e! O @, ~# Z, ?# OMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;4 T( l/ D! M$ M1 y7 p( P
e-mail: [email protected].' U+ R( j- p) Y- U6 q
about 6 to 7 months old, which progressively became" g8 t% O+ M- {5 _0 b$ v5 w& \
darker. She was also concerned about the enlarge-2 A, T5 \8 @: J3 s$ K" F7 y
ment of his penis and frequent erections. The child( @2 L! P" N" {* F
was the product of a full-term normal delivery, with
9 Q1 w% Q. L1 l/ i+ s+ Ua birth weight of 7 lb 14 oz, and birth length of
+ P! }! O: @6 C) J20 inches. He was breast-fed throughout the first year9 p* o( C' a' z& }! l+ Z
of life and was still receiving breast milk along with
( ?: w) W0 X9 t0 Xsolid food. He had no hospitalizations or surgery,
+ Y+ d9 _- [ |3 e; hand his psychosocial and psychomotor development* H, V3 O3 ^( P9 e! i' v f
was age appropriate.
# u3 t2 R2 @+ ?The family history was remarkable for the father,
" D: @; Y7 U5 \7 \& l1 bwho was diagnosed with hypothyroidism at age 16,. ?0 w5 U, g4 T- x: n. J
which was treated with thyroxine. The father’s
( N/ s' n/ s& o3 c, z% R1 Bheight was 6 feet, and he went through a somewhat) m6 b% j( \' y. }9 d
early puberty and had stopped growing by age 14.
" B+ c1 u- ^7 X) i- N2 B, pThe father denied taking any other medication. The
2 L0 l: [: J1 H1 u- w5 Dchild’s mother was in good health. Her menarche
8 W$ [' v0 y$ R& e" _6 M6 Gwas at 11 years of age, and her height was at 5 feet( G* z% v( P$ K) E4 Z5 Q
5 inches. There was no other family history of pre-
9 M/ a( }" r9 q! m1 y) x& I/ Bcocious sexual development in the first-degree rela-
6 E" |. I& s3 ^; jtives. There were no siblings.# t; Y: C: [7 x. X* q
Physical Examination1 C2 S! M. T5 O
The physical examination revealed a very active,
+ R# S7 }: t B& N/ d9 ?playful, and healthy boy. The vital signs documented
6 Q' r3 |% P0 k# `$ r9 u+ |$ la blood pressure of 85/50 mm Hg, his length was( Y7 c- V# W. |. q6 N5 S$ W
90 cm (>97th percentile), and his weight was 14.4 kg0 I: n3 t0 F; m+ X
(also >97th percentile). The observed yearly growth
" i( V/ O; t O5 y5 Z! @ ivelocity was 30 cm (12 inches). The examination of% I% d# y- w6 {) U
the neck revealed no thyroid enlargement.% M6 |1 N2 ^7 q* ?' S, m
The genitourinary examination was remarkable for
8 F5 E: D5 k1 v5 Renlargement of the penis, with a stretched length of0 z5 s. [" [8 W* D2 L+ u8 P
8 cm and a width of 2 cm. The glans penis was very well
; P7 E5 `; ^; r1 Sdeveloped. The pubic hair was Tanner II, mostly around
+ e Z& p4 @, l `540; s. O8 h/ C# N ~4 P1 [: L
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from, L! N$ u( k' M C
the base of the phallus and was dark and curled. The* L+ u$ `# a+ b4 G& e' r
testicular volume was prepubertal at 2 mL each.) u# a/ Y! `2 [% }# M& U
The skin was moist and smooth and somewhat6 n" g' Z, z: ]# b
oily. No axillary hair was noted. There were no- P1 O9 C: d& }. s: e. l
abnormal skin pigmentations or café-au-lait spots./ X! {3 p+ }( x g2 \
Neurologic evaluation showed deep tendon reflex 2+3 ~& P# }, O( p0 t$ X3 F
bilateral and symmetrical. There was no suggestion9 C6 h7 y- |& |$ S; @
of papilledema.5 W; h2 J4 m, [# O5 @/ H
Laboratory Evaluation! p; b' G* W" z1 O( j
The bone age was consistent with 28 months by
6 H+ Q: }* ^0 I1 h+ }) v8 busing the standard of Greulich and Pyle at a chrono-1 y, ^; V/ b+ m6 J, B! z
logic age of 16 months (advanced).5 Chromosomal
; q; h. q7 Q% o: Q/ b. ckaryotype was 46XY. The thyroid function test3 G7 K+ M; P x" q; V+ [/ V$ P5 q
showed a free T4 of 1.69 ng/dL, and thyroid stimu-
( L1 T+ g$ ?9 `+ e j. f/ Llating hormone level was 1.3 µIU/mL (both normal).
/ }8 X; i4 z& e; Y( p( }The concentrations of serum electrolytes, blood
2 E% u* f1 x8 N0 E6 s" v; J" aurea nitrogen, creatinine, and calcium all were. j& v# _ R' j& d- B; Y7 s& Z, h
within normal range for his age. The concentration
6 q1 n `$ p6 Pof serum 17-hydroxyprogesterone was 16 ng/dL& e$ Z6 _" M S5 N$ Z+ }
(normal, 3 to 90 ng/dL), androstenedione was 20+ J! r( q/ }, X
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
! L/ I6 Y4 L# b7 w: h, wterone was 38 ng/dL (normal, 50 to 760 ng/dL),6 i7 y) Z/ y- D y0 o5 Q& N3 H
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
8 |" D+ { `& a& n S4 B49ng/dL), 11-desoxycortisol (specific compound S)
/ F! s* m2 v; M/ Y1 iwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
5 Y! q$ w! g4 v* i* O' atisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
+ {3 u) e! G, F$ r2 utestosterone was 60 ng/dL (normal <3 to 10 ng/dL),
; E& X5 g7 ^6 U$ w; `and β-human chorionic gonadotropin was less than
' `& D. G3 H. D5 mIU/mL (normal <5 mIU/mL). Serum follicular
7 A) v( `8 o' f* [stimulating hormone and leuteinizing hormone2 T9 n! p! O( m
concentrations were less than 0.05 mIU/mL* ~6 ?1 X6 q2 S
(prepubertal).
8 }+ W& F3 V: @# MThe parents were notified about the laboratory7 \2 Z2 x) V& |& N
results and were informed that all of the tests were
& k; G+ d; N* j* Inormal except the testosterone level was high. The
' ~) x8 p9 G8 O0 t1 P1 lfollow-up visit was arranged within a few weeks to% Y8 t+ _' ?: D; F( x' A, @
obtain testicular and abdominal sonograms; how-0 j% J2 _7 m0 I0 p
ever, the family did not return for 4 months.
( b: z1 q$ Q' [& }% o! _7 DPhysical examination at this time revealed that the
2 _+ t3 a2 W4 Z# ]2 _( d! Dchild had grown 2.5 cm in 4 months and had gained U( a3 r5 f8 V# A" {- O; ]
2 kg of weight. Physical examination remained s$ X3 h$ o7 g3 I+ Y% s2 G( f
unchanged. Surprisingly, the pubic hair almost com-. G. \3 J; v1 b: N5 r
pletely disappeared except for a few vellous hairs at2 Q* V Y& I8 C8 n
the base of the phallus. Testicular volume was still 2
& N9 [: d5 s4 P) EmL, and the size of the penis remained unchanged.. h# x& f* N4 g y: ]; R* N
The mother also said that the boy was no longer hav-9 N" ?& ?; f% P" Y
ing frequent erections.9 V; s' u" \8 S
Both parents were again questioned about use of* s9 W6 ^. l6 z0 g
any ointment/creams that they may have applied to% p9 d+ E7 Z$ a6 s% u/ r2 m9 B
the child’s skin. This time the father admitted the+ T6 h3 {" A/ l. f- e
Topical Testosterone Exposure / Bhowmick et al 541$ l0 S8 N6 X& A$ v3 ]$ R O
use of testosterone gel twice daily that he was apply-
7 I3 V% [, J" n5 ]6 E& I; C7 Ming over his own shoulders, chest, and back area for
! O! ]- F/ f$ c" t. D- na year. The father also revealed he was embarrassed
2 c a0 J9 a \6 |3 v; rto disclose that he was using a testosterone gel pre- O+ M" b: Y2 a5 \2 n$ f& X+ x
scribed by his family physician for decreased libido2 f2 q3 B/ u7 N5 V
secondary to depression.9 o9 ]; H( G2 p- b1 _9 D" K
The child slept in the same bed with parents.3 u7 B; N4 ~+ Q
The father would hug the baby and hold him on his+ E C- C+ J' W' n1 d
chest for a considerable period of time, causing sig-
2 x7 Y. J+ Y. z, a( Z! Ynificant bare skin contact between baby and father.
{" W; }* x- t& [$ I# z. hThe father also admitted that after the phone call,
) R& ?6 W1 y9 d% y' \8 qwhen he learned the testosterone level in the baby% j/ v% \' y5 ~% O" k- D9 o
was high, he then read the product information
6 d! Q! `) t9 L" f# M; ~' vpacket and concluded that it was most likely the rea-
, H' @" c' q! F$ Lson for the child’s virilization. At that time, they
6 h" s' F& U+ i! R+ ~0 R9 d5 x* @decided to put the baby in a separate bed, and the
& u; h* P2 |7 \" j3 G! ?father was not hugging him with bare skin and had( p% b9 X8 |! \) K/ d; l
been using protective clothing. A repeat testosterone1 N9 C- |% o! z p
test was ordered, but the family did not go to the
~6 l1 L* m5 a* V6 [& V1 P5 f1 jlaboratory to obtain the test.
( V, ^, S k: W2 ^Discussion
4 ]# ?5 ?- O8 V4 _& P$ [" mPrecocious puberty in boys is defined as secondary/ c( ^7 s5 d3 A+ N% m/ C
sexual development before 9 years of age.1,4
! |+ L/ `- O/ K ?8 c, j* aPrecocious puberty is termed as central (true) when2 C9 U7 w0 G' J3 C6 S! \
it is caused by the premature activation of hypo-
@- x% D1 y$ z7 K! I ?" U& Othalamic pituitary gonadal axis. CPP is more com-
$ F" [, c& P7 k+ B) wmon in girls than in boys.1,3 Most boys with CPP+ K# i n( E2 C3 Q" A3 w0 r: p- q3 m
may have a central nervous system lesion that is' O& n6 ^# Z3 i, A2 a. \' `: \
responsible for the early activation of the hypothal-, n. S, ^! g, p5 }
amic pituitary gonadal axis.1-3 Thus, greater empha-6 I& Y; D' _1 O4 o1 o E6 {- J" h
sis has been given to neuroradiologic imaging in4 R3 i$ l4 a' ^( p, L$ y- e. u2 l+ o
boys with precocious puberty. In addition to viril-
8 B5 o; }; D W& E5 Cization, the clinical hallmark of CPP is the symmet-
) h; U; k2 l+ b5 krical testicular growth secondary to stimulation by$ B# U& Y& I. `4 G2 z
gonadotropins.1,3# b" L! x4 j: P! f* A5 Q) E. }# [
Gonadotropin-independent peripheral preco-
6 j& }# @4 [* U6 X& Y- ecious puberty in boys also results from inappropriate) y0 M$ R/ r; D
androgenic stimulation from either endogenous or
5 {9 `1 v' o9 B; jexogenous sources, nonpituitary gonadotropin stim-$ g. F* K& F5 l* D' j9 g9 K8 t
ulation, and rare activating mutations.3 Virilizing: I& \2 U- C% G2 _, j0 [$ G( u- N8 y
congenital adrenal hyperplasia producing excessive
7 x) C& t4 l* t! b: R1 j0 t2 ?9 dadrenal androgens is a common cause of precocious
/ @+ q$ _& P J& v7 w. V4 qpuberty in boys.3,4( f0 L2 A; X7 R+ V
The most common form of congenital adrenal, S1 E3 Z: `7 i0 b/ a4 L
hyperplasia is the 21-hydroxylase enzyme deficiency.
2 D8 v- E. d* {3 aThe 11-β hydroxylase deficiency may also result in
; M, |( L6 o- f. l" y0 K1 |( @excessive adrenal androgen production, and rarely,& K; ?- f" @; f/ u; ^6 U
an adrenal tumor may also cause adrenal androgen" k! B3 {. K6 }/ E
excess.1,3
$ z9 @ Z, a2 Y+ jat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
, M9 _2 n! j4 g) z6 ~$ g' h542 Clinical Pediatrics / Vol. 46, No. 6, July 2007! u3 L7 u0 H$ ?, P
A unique entity of male-limited gonadotropin-) d# }4 y/ B1 w% o) K
independent precocious puberty, which is also known3 } P6 }4 |, C- G+ @! L, F9 T3 B! H
as testotoxicosis, may cause precocious puberty at a
1 B$ m4 M' `# n8 k+ B' i. every young age. The physical findings in these boys6 v1 ^3 W$ t. ?; b% { @+ b
with this disorder are full pubertal development,
C" M; `2 Q" J2 ~. m5 Sincluding bilateral testicular growth, similar to boys" K/ @( R8 O: }: C: r5 z, o, f* h
with CPP. The gonadotropin levels in this disorder J1 I: p- J2 V1 q M. i
are suppressed to prepubertal levels and do not show" a6 ]( A Q5 M# S
pubertal response of gonadotropin after gonadotropin-
- M, o4 m" Z# u; ]2 z2 X& t% Jreleasing hormone stimulation. This is a sex-linked( U0 j$ g( {* r l8 T/ E+ s
autosomal dominant disorder that affects only. }' j4 R5 M6 q" Q2 z$ h
males; therefore, other male members of the family
; c# N l9 G# W) Fmay have similar precocious puberty.3
1 a# {( @( B K, mIn our patient, physical examination was incon-
: v8 R/ [/ F- b/ _sistent with true precocious puberty since his testi-4 Q; o% W2 K& R2 g( ^! p
cles were prepubertal in size. However, testotoxicosis+ K- I9 S. r3 ]2 M% U5 F
was in the differential diagnosis because his father9 ~" J6 u$ z+ T: S
started puberty somewhat early, and occasionally,3 d9 T+ z* e# W0 y: y- g6 K3 \
testicular enlargement is not that evident in the9 o. f9 u1 D) L( Q2 Z7 T& G1 O
beginning of this process.1 In the absence of a neg-' {8 A5 w. q3 _4 u) {
ative initial history of androgen exposure, our
( |5 r- @6 f0 ^8 {" f2 Rbiggest concern was virilizing adrenal hyperplasia,& P* W$ d0 d/ I1 {8 u* U6 _3 S
either 21-hydroxylase deficiency or 11-β hydroxylase
% b8 O. n: Q6 P- }0 f( ] Rdeficiency. Those diagnoses were excluded by find-, @3 ^/ W$ V/ U% C3 `; d" r7 U l2 u
ing the normal level of adrenal steroids.
# j+ V2 \ J; z+ Q$ IThe diagnosis of exogenous androgens was strongly; ?# r4 d A O8 G, c
suspected in a follow-up visit after 4 months because
, _3 W5 O. t! H& ?/ xthe physical examination revealed the complete disap-! W( p. ^" q( P0 F
pearance of pubic hair, normal growth velocity, and& K' p/ q |0 ^/ c; ~9 D
decreased erections. The father admitted using a testos-
3 T* ^0 e L% F' x( u# Yterone gel, which he concealed at first visit. He was. _! @: m% j4 C* L7 |4 O7 o
using it rather frequently, twice a day. The Physicians’1 {0 w5 X9 W$ J1 v1 X
Desk Reference, or package insert of this product, gel or
4 X+ r6 I {; Hcream, cautions about dermal testosterone transfer to/ S' s8 l: T2 i7 [/ w, \# F8 v
unprotected females through direct skin exposure.
8 y; C, d0 s$ V) xSerum testosterone level was found to be 2 times the
$ [) ]' L8 y2 D* M6 P7 H; M6 }baseline value in those females who were exposed to
& d* ]2 j$ q0 peven 15 minutes of direct skin contact with their male
I2 _- M, Q6 O4 kpartners.6 However, when a shirt covered the applica-4 y/ o' k: P1 d8 H6 Z, U
tion site, this testosterone transfer was prevented./ F- w% Z6 V6 b
Our patient’s testosterone level was 60 ng/mL,) E6 \% j5 Q8 O" M% n# f$ J Q& ^
which was clearly high. Some studies suggest that8 m" z2 @( z! `
dermal conversion of testosterone to dihydrotestos-6 l. Y4 h! J& ~0 }
terone, which is a more potent metabolite, is more
% x7 ?. f' Z; v& ~9 g* a# A0 wactive in young children exposed to testosterone5 M8 K7 U5 e( f, O- Q1 g
exogenously7; however, we did not measure a dihy-
. t: G X7 U0 v) k+ U9 xdrotestosterone level in our patient. In addition to& P$ F0 Q: i3 {, l* V" m
virilization, exposure to exogenous testosterone in8 T' k" y6 V3 K6 w! C. G
children results in an increase in growth velocity and6 t1 R+ U3 D% H
advanced bone age, as seen in our patient.
$ D/ r. ?8 j) D4 T# Y3 rThe long-term effect of androgen exposure during3 ]. N; h$ U% a0 b
early childhood on pubertal development and final. `1 T: l! T- N2 t2 c2 F
adult height are not fully known and always remain
3 |" Y7 \" T/ C( l/ K7 a5 @a concern. Children treated with short-term testos-! B& O9 A$ z! j/ M
terone injection or topical androgen may exhibit some
2 N; j' c7 r; e1 u" u5 u o+ k zacceleration of the skeletal maturation; however, after
7 q6 t- G; Q! v) H9 scessation of treatment, the rate of bone maturation$ d: |6 c v/ U4 k o
decelerates and gradually returns to normal.8,97 P. t- j5 H( U' U7 G& ?
There are conflicting reports and controversy
7 T' ]) h8 ^$ S- N8 c* D0 h- Dover the effect of early androgen exposure on adult
, e# N, I @" x1 Mpenile length.10,11 Some reports suggest subnormal
' r% C2 \$ h( d" A8 W1 w* b% Aadult penile length, apparently because of downreg-
0 G3 T8 u. ?) E9 M N7 Hulation of androgen receptor number.10,12 However,
! E1 C' b7 c. U! e) e8 g3 WSutherland et al13 did not find a correlation between% F/ {9 G; @3 O1 e" p' ?/ J* d
childhood testosterone exposure and reduced adult
4 R4 F) K# t3 l2 y) cpenile length in clinical studies.
5 m- b; c4 D! o) P1 X/ \- J" E0 ^Nonetheless, we do not believe our patient is
0 m! V9 S5 [4 ~ cgoing to experience any of the untoward effects from
" a* B0 Z: M* T1 ctestosterone exposure as mentioned earlier because; g, W: \: O9 k: n) j
the exposure was not for a prolonged period of time., G' q, x, V2 U k* _
Although the bone age was advanced at the time of2 @+ \, Y* [) L& F! g
diagnosis, the child had a normal growth velocity at5 a( V7 G. D/ o. _5 l' N0 z3 P6 `1 C
the follow-up visit. It is hoped that his final adult
! g- c d+ \* Cheight will not be affected.: @# y2 I6 `9 ~$ a2 T7 A
Although rarely reported, the widespread avail-
- i1 n& d+ ~# v% bability of androgen products in our society may
: A5 |% ~( K& d9 f8 z3 o" W0 Mindeed cause more virilization in male or female
$ C4 j! f/ E* W w0 p& tchildren than one would realize. Exposure to andro-/ z$ |( ^/ w# C
gen products must be considered and specific ques-
7 H5 p! ^7 t1 m5 i- A& q, ^; Dtioning about the use of a testosterone product or
Y" z4 ]! ?9 \1 dgel should be asked of the family members during. s( z; O$ Y* S; r8 a- _
the evaluation of any children who present with vir-6 p; q! l& @ _2 W# l
ilization or peripheral precocious puberty. The diag-" l( K: E O1 [* D
nosis can be established by just a few tests and by
) @0 r( \: K% w: m: ^0 l/ uappropriate history. The inability to obtain such a
9 j: g1 {: q" [) P9 A- o% khistory, or failure to ask the specific questions, may' [. Y4 N5 G$ s. X) u3 B/ v( V
result in extensive, unnecessary, and expensive7 l% W Y6 [1 i7 }& R
investigation. The primary care physician should be
; s+ [( Y' ~) i% h) A0 i# _; Naware of this fact, because most of these children
& R# k( i+ H+ z: [) pmay initially present in their practice. The Physicians’
# u5 g/ A! F% X& Z/ DDesk Reference and package insert should also put a3 e( L- k% u- R
warning about the virilizing effect on a male or
2 _1 v: c( n5 a b% r* K2 Cfemale child who might come in contact with some-
& Z' r3 ]7 y3 @! J" k1 B8 z# d8 hone using any of these products.4 K% K( v+ q8 \. |: S7 \4 u
References
$ D* W* C2 x" s/ h1. Styne DM. The testes: disorder of sexual differentiation& `8 h2 f, Z) I. s6 A" T0 i6 B6 X: r
and puberty in the male. In: Sperling MA, ed. Pediatric- B X4 o5 o: [# T
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;4 V" b' F2 E* Y4 Y: m
2002: 565-628.- d& ]* F3 r! q- E
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious5 V1 z+ S/ r9 M, @3 R+ D3 [" ~ v
puberty in children with tumours of the suprasellar pineal |
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