- 註冊時間
- 2023-5-6
- 精華
- 在線時間
- 小時
- 米币
-
- 最後登錄
- 1970-1-1
|
發表於 2025-1-4 03:27:02
|
顯示全部樓層
Sexual Precocity in a 16-Month-Old
2 k% T c4 w1 [2 `0 `. xBoy Induced by Indirect Topical+ S* Z& u( ?/ s: c# ^7 o
Exposure to Testosterone
0 L+ d) D j' ^2 a" u LSamar K. Bhowmick, MD, FACE,1 Tracy Ricke, MD,2* T4 D# G R" J, C. ?! j# E
and Kenneth R. Rettig, MD1
1 H( w# {* {' a! tClinical Pediatrics
4 t9 W8 ]+ N1 `Volume 46 Number 6% J3 n4 ~! C5 D# w+ z( Z& n) H& v
July 2007 540-5431 [; D, q# N3 [ f9 x
© 2007 Sage Publications& w3 f5 t$ `/ S( O/ t# Z
10.1177/0009922806296651
3 M" s7 r1 T$ _http://clp.sagepub.com
; r$ R2 I# E* k) H3 Whosted at( E; v: \$ @" [0 ]$ r+ _4 [& P
http://online.sagepub.com
& s/ T" `1 p9 nPrecocious puberty in boys, central or peripheral,
* ^ [9 H2 R$ n0 Z, u5 M5 uis a significant concern for physicians. Central, Y* ]+ j) \0 ?* e' @7 W7 j+ h0 y
precocious puberty (CPP), which is mediated( J! [5 M# E3 @
through the hypothalamic pituitary gonadal axis, has+ }( f% d/ K y$ r! ~# L# Y
a higher incidence of organic central nervous system
" p9 w3 a4 b2 J, Ilesions in boys.1,2 Virilization in boys, as manifested
8 @% m0 R) m$ U. j! @( ~by enlargement of the penis, development of pubic8 e& u l9 X: ~8 R$ j; s. J j' o6 }
hair, and facial acne without enlargement of testi-8 w$ S1 e7 {5 O* u
cles, suggests peripheral or pseudopuberty.1-3 We
# F7 ]8 Y+ @0 u) `0 M' Treport a 16-month-old boy who presented with the
* ~3 P6 ]$ T1 U- S. j$ kenlargement of the phallus and pubic hair develop-
) N2 o8 f; {- W' Ement without testicular enlargement, which was due
8 W. i m7 ?5 v1 Ato the unintentional exposure to androgen gel used by
. M: X- R+ @( c- R( G; Mthe father. The family initially concealed this infor-
/ e6 f7 w2 A! O9 `, t( nmation, resulting in an extensive work-up for this5 @5 d+ q4 z3 V: }" m
child. Given the widespread and easy availability of
2 _! W" c; U+ m+ t! e' N, L9 `8 stestosterone gel and cream, we believe this is proba-
3 M; Q+ ~6 h+ N/ c6 |3 G5 Xbly more common than the rare case report in the; k7 c, B& v1 ]. y+ ?8 l
literature.4+ N X5 m9 {/ n; F" q" |- |/ W8 h
Patient Report
6 Y: ^5 N- B/ {& `$ B4 F9 \A 16-month-old white child was referred to the
' B; c% C8 N7 j" ?7 `# `6 cendocrine clinic by his pediatrician with the concern, g; Z1 ?' e* J* O- Z
of early sexual development. His mother noticed! T9 ?/ \8 ~" V; V; ~' q; G* Z
light colored pubic hair development when he was" {/ g$ p% N7 n K+ v
From the 1Division of Pediatric Endocrinology, 2University of
$ s" I& @9 A" l, y9 Z2 HSouth Alabama Medical Center, Mobile, Alabama.
! ^" L$ \5 d, T0 XAddress correspondence to: Samar K. Bhowmick, MD, FACE,
' q: B6 b7 P) z' D5 `Professor of Pediatrics, University of South Alabama, College of
9 m7 n6 S. `2 f& DMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;& K! K9 V" }* P3 j# o& y s
e-mail: [email protected].
' t% Y8 K, ?0 s5 |about 6 to 7 months old, which progressively became8 c/ z) K/ F0 c. W C, [ c9 `6 d
darker. She was also concerned about the enlarge-
0 z7 a$ m( |" E `) s9 M6 ]1 e; Wment of his penis and frequent erections. The child2 }# k' n4 i" Q; w; G
was the product of a full-term normal delivery, with
7 O& K. s6 M, P* Ka birth weight of 7 lb 14 oz, and birth length of
% n& Y n' K4 Q* q# `$ F4 D' T+ j, N* s20 inches. He was breast-fed throughout the first year/ D$ I! }1 X J6 D) a' M
of life and was still receiving breast milk along with! V$ n+ V; Q, [) y! o4 K
solid food. He had no hospitalizations or surgery,0 ~2 O7 o7 q' s! J2 k
and his psychosocial and psychomotor development
$ c. }1 K% W7 r" Z$ }8 D/ Rwas age appropriate.
2 O6 {" }7 Z: x5 j2 F, c# qThe family history was remarkable for the father,
# ~! A$ L$ M O8 [& _who was diagnosed with hypothyroidism at age 16,
% [! G0 \4 w) X3 S/ M. pwhich was treated with thyroxine. The father’s' M' t/ F" q! w3 l) f+ |
height was 6 feet, and he went through a somewhat
2 W; Z9 e0 l5 g4 a0 rearly puberty and had stopped growing by age 14.) c- ]3 p4 p" q+ ]1 j) X& ?
The father denied taking any other medication. The L8 h: k$ ]" Y% O, D) ^
child’s mother was in good health. Her menarche- u& u6 `! ]8 I ` q
was at 11 years of age, and her height was at 5 feet, r" w: Z; E) Y
5 inches. There was no other family history of pre-
% f( N1 K6 k$ W3 T# ~- {cocious sexual development in the first-degree rela-5 u1 y. W- O' N+ a7 L: ?
tives. There were no siblings.) `4 y6 ]- D4 ]; N/ h' m
Physical Examination2 d8 R/ x" w$ ^5 q. S; X
The physical examination revealed a very active,
4 O* }- A* Q- J2 e- \' B b6 p' Nplayful, and healthy boy. The vital signs documented
( n+ Q8 B8 I' C- _1 e! i( K9 ?a blood pressure of 85/50 mm Hg, his length was [( i" a) }2 D0 p: i6 D) M$ Z5 p
90 cm (>97th percentile), and his weight was 14.4 kg0 V3 ^7 P) P! ^2 `; d) L
(also >97th percentile). The observed yearly growth, y) l$ ]6 w$ ?8 T4 g% |
velocity was 30 cm (12 inches). The examination of
$ O% ^" g" s4 {" sthe neck revealed no thyroid enlargement.5 j! b9 y6 F ? S$ f2 C5 D$ f# V6 F) q
The genitourinary examination was remarkable for
) A4 E0 B% v) l7 Lenlargement of the penis, with a stretched length of7 V( l6 h7 c E4 s& m, b" \
8 cm and a width of 2 cm. The glans penis was very well
m4 b' P, |! u' n% |developed. The pubic hair was Tanner II, mostly around
$ b' u, y$ \1 T# f+ K% j. k, @5 }540
. z! G6 W" p; p; Nat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
) {; R+ d6 h ^" n/ m$ Ithe base of the phallus and was dark and curled. The
' G) ?: j" s' { I) y. V; u3 h* Gtesticular volume was prepubertal at 2 mL each.9 k/ Q* z0 \, x% e5 m# l3 p& r1 p
The skin was moist and smooth and somewhat# |3 L' }+ k- D4 |. X( V& y
oily. No axillary hair was noted. There were no5 M7 c r% \# X0 R4 `
abnormal skin pigmentations or café-au-lait spots.% j& A- a0 ?' T) w5 L, {+ |' |7 _' C
Neurologic evaluation showed deep tendon reflex 2+
. X+ _ X* H+ Z- Ebilateral and symmetrical. There was no suggestion
* z4 B' p# T& B: t( Hof papilledema.
# C/ m) f. c5 x2 k- vLaboratory Evaluation
. [9 N6 G" _' e: e AThe bone age was consistent with 28 months by' w- w+ D9 F: @) A6 J9 m, `
using the standard of Greulich and Pyle at a chrono-
6 |. y" h2 C) u1 D" Blogic age of 16 months (advanced).5 Chromosomal5 x7 M0 {& P7 N; v* B8 d7 H2 u0 w9 k2 k
karyotype was 46XY. The thyroid function test- L2 w" a# a% F u" D8 i
showed a free T4 of 1.69 ng/dL, and thyroid stimu-
6 v) H9 \- q+ D jlating hormone level was 1.3 µIU/mL (both normal).' Q) N* [* K( Y& {" i
The concentrations of serum electrolytes, blood
9 {/ w9 o3 h6 v9 m0 }* m$ x& x& Z/ O2 Iurea nitrogen, creatinine, and calcium all were1 F! ^% y! b4 E
within normal range for his age. The concentration3 _2 W- m/ g; @; T' U3 T
of serum 17-hydroxyprogesterone was 16 ng/dL9 {, k8 w4 K" J" i' q
(normal, 3 to 90 ng/dL), androstenedione was 20
5 b- j3 C6 X! E: `, l$ jng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-0 w3 g) S* Q* G; Q* r
terone was 38 ng/dL (normal, 50 to 760 ng/dL),
* C7 ?) x9 E( i3 g/ ldesoxycorticosterone was 4.3 ng/dL (normal, 7 to
5 W5 C% |. y! {3 |49ng/dL), 11-desoxycortisol (specific compound S)
& b" s9 A7 \3 S. I: C* Owas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-7 a' k4 R- }, N% @
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total. c/ {& k$ H4 q2 q) u
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),& z5 w$ W; Z0 v5 t
and β-human chorionic gonadotropin was less than) x- k/ u/ I$ |% d# w9 ?, q2 P4 W
5 mIU/mL (normal <5 mIU/mL). Serum follicular
. U4 b9 x+ R- K1 {, K" mstimulating hormone and leuteinizing hormone* n) f9 u! i3 ?( M
concentrations were less than 0.05 mIU/mL- [# l+ q+ r9 T2 [
(prepubertal).
# y) L7 l0 L5 S& U- nThe parents were notified about the laboratory
! y- i$ o- q, D$ Vresults and were informed that all of the tests were
- X/ D# c7 A- c fnormal except the testosterone level was high. The; z* h, i U: ]7 S( M8 ?& q
follow-up visit was arranged within a few weeks to+ T+ U: T/ ]" f1 o! P; n
obtain testicular and abdominal sonograms; how-
$ F8 c3 t. w: D$ h [6 Aever, the family did not return for 4 months.
. G3 \9 l1 W, [% F: B% TPhysical examination at this time revealed that the5 h5 |( ~. T" m$ E
child had grown 2.5 cm in 4 months and had gained
! l s" ^" Q% _& a6 W' X2 kg of weight. Physical examination remained
( f& e3 S$ ~. x. ]% ?unchanged. Surprisingly, the pubic hair almost com-
( J1 y$ Y7 G6 x- `5 |9 g' O0 @, h! wpletely disappeared except for a few vellous hairs at7 _" o, T& c* R# C b+ {& `
the base of the phallus. Testicular volume was still 2
! q+ D/ u; y$ m5 L& r4 y' NmL, and the size of the penis remained unchanged. A& u6 y6 I: A) h
The mother also said that the boy was no longer hav-9 Y7 B$ ?' x5 f- P2 k( d; q: x
ing frequent erections.# @6 T# M3 b. O/ j( ^7 \. V
Both parents were again questioned about use of' m$ h" o) _7 w. \
any ointment/creams that they may have applied to
' y2 B# v+ W! Kthe child’s skin. This time the father admitted the
$ a# u W3 @# ~' b: C( nTopical Testosterone Exposure / Bhowmick et al 541
& p" q- p6 V% d1 n. C" wuse of testosterone gel twice daily that he was apply-+ b. r4 B! c9 g `) D* Q
ing over his own shoulders, chest, and back area for2 B/ O) D5 c! K
a year. The father also revealed he was embarrassed
( |* k- k- X1 _# ^1 Ito disclose that he was using a testosterone gel pre-' o6 l# H; _+ ?* D
scribed by his family physician for decreased libido
' _) n; l( X9 Ysecondary to depression.
8 H, Y [6 R" r, LThe child slept in the same bed with parents.6 L5 k+ q. s: `& _1 r" Y* d
The father would hug the baby and hold him on his
3 W. p: e6 N' o8 k8 Wchest for a considerable period of time, causing sig-$ `) A3 H! W# T s4 u# Q
nificant bare skin contact between baby and father.$ u5 L2 v+ [4 V# X7 F4 B! d7 q" V; A6 [
The father also admitted that after the phone call,
$ h* O1 C4 v. h8 \* S$ jwhen he learned the testosterone level in the baby& p9 L! u5 |" I" ]
was high, he then read the product information
4 [# U- \8 O: B* d: K: g3 Qpacket and concluded that it was most likely the rea-
- C# j$ U3 A0 M3 ?2 \son for the child’s virilization. At that time, they) d9 ]5 K, L, E! x2 b9 f
decided to put the baby in a separate bed, and the( w+ |$ l5 Q/ ]. Z( q8 S- I
father was not hugging him with bare skin and had; M {. a' S2 x* Q# N; x: D, }
been using protective clothing. A repeat testosterone
8 L1 C: M8 m) S8 B$ Q5 Qtest was ordered, but the family did not go to the$ { M, X3 t9 O* Z' K ^
laboratory to obtain the test.2 U% p& R* v- u
Discussion
( k5 t3 P T5 J# n* JPrecocious puberty in boys is defined as secondary$ x n9 K7 f' I- R) X0 u
sexual development before 9 years of age.1,4
/ k) [0 b% D% e+ i3 J, E) G @Precocious puberty is termed as central (true) when
8 H I$ ` o& w6 [it is caused by the premature activation of hypo-
# M ]3 y6 T* Q# Z! @1 z2 nthalamic pituitary gonadal axis. CPP is more com-
% }2 f( |) R. b9 U) w( n; I' g* _3 Dmon in girls than in boys.1,3 Most boys with CPP
2 y. R: A7 r, I0 J6 h! umay have a central nervous system lesion that is6 Z% u P+ U7 ?, N8 z5 V
responsible for the early activation of the hypothal-
: z: C, P8 S5 Kamic pituitary gonadal axis.1-3 Thus, greater empha-
' d% k: z- B$ o8 qsis has been given to neuroradiologic imaging in
9 S: c7 }4 w' N }& ~' Kboys with precocious puberty. In addition to viril-7 A$ k- A/ K. W/ G) Y' X
ization, the clinical hallmark of CPP is the symmet-2 s) T& f# S: I- e% T* D) @
rical testicular growth secondary to stimulation by
* F$ {& I- T' V1 Z/ Z8 x' Igonadotropins.1,3. r+ u# Y5 K% V
Gonadotropin-independent peripheral preco-
[& V2 _9 v6 x! q3 ]" E$ pcious puberty in boys also results from inappropriate
) X W, h( p2 z Qandrogenic stimulation from either endogenous or
/ f; I' i- K$ _ D, Z: Z7 Aexogenous sources, nonpituitary gonadotropin stim-& L: t* W9 x3 j" w* U3 q/ E# e
ulation, and rare activating mutations.3 Virilizing: a; M0 l# F5 z0 H: k
congenital adrenal hyperplasia producing excessive
# r6 ]; K K) B* M+ ^adrenal androgens is a common cause of precocious( Q* H# J% }. U9 ~3 \/ A
puberty in boys.3,4; P" ?/ I! O2 I, O5 h" A
The most common form of congenital adrenal
' e- M1 ?0 b9 l0 qhyperplasia is the 21-hydroxylase enzyme deficiency., P; x8 P( r/ r! r
The 11-β hydroxylase deficiency may also result in( e+ _; U9 _( u( ?9 G* a0 C
excessive adrenal androgen production, and rarely,) s7 P& Q/ K3 @9 f6 h" R
an adrenal tumor may also cause adrenal androgen6 Z4 ~* Z2 ~/ j# }
excess.1,3
A6 O" {6 Y6 Y* Cat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from1 o# q3 t% i+ R+ y, G
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
( u: G; T/ x/ p; k" P$ c7 mA unique entity of male-limited gonadotropin-$ k$ m! s1 h) @4 |
independent precocious puberty, which is also known8 ?4 F+ `% l; K
as testotoxicosis, may cause precocious puberty at a
& Q0 {' J8 t) w: A' M- w" b0 kvery young age. The physical findings in these boys/ m3 Z5 G$ t+ D+ x
with this disorder are full pubertal development,
! b. P1 V* d$ d# W0 oincluding bilateral testicular growth, similar to boys
% x. @& X: B2 O# [8 pwith CPP. The gonadotropin levels in this disorder
. Q* N4 E3 w+ j- jare suppressed to prepubertal levels and do not show
7 C, C4 l! |# K6 l& T) I7 upubertal response of gonadotropin after gonadotropin-
9 Q" \! {; P& ^* o: y/ B; nreleasing hormone stimulation. This is a sex-linked
4 ?+ ]( j6 r9 k+ H( c0 d2 F4 b2 eautosomal dominant disorder that affects only
- i1 `0 h$ ]. \8 \3 ?* J3 n4 [" C& umales; therefore, other male members of the family5 L' g$ {) u0 E9 C9 z$ d# g
may have similar precocious puberty.3
$ H* |9 p- @) ?In our patient, physical examination was incon-3 e8 k u9 I o, j8 x
sistent with true precocious puberty since his testi-/ q" e7 E% n: u8 [* J2 }% R( Z
cles were prepubertal in size. However, testotoxicosis
. u- a3 s, ^# u* W* Z3 hwas in the differential diagnosis because his father$ L: ]9 U! }& m$ H- \
started puberty somewhat early, and occasionally,$ l; z8 L0 ?+ {4 D) I+ N2 t& C3 f
testicular enlargement is not that evident in the
) ~7 f3 g. v3 nbeginning of this process.1 In the absence of a neg-2 p" v2 q- _' Q% R. \ C6 T7 n
ative initial history of androgen exposure, our
2 c* n. {: R+ x! bbiggest concern was virilizing adrenal hyperplasia,
4 p; }' J# T+ G8 t: Teither 21-hydroxylase deficiency or 11-β hydroxylase
. Q' P' k; D. H/ }4 ydeficiency. Those diagnoses were excluded by find-
5 @6 `+ B$ G u, D! h1 oing the normal level of adrenal steroids.
0 Y# h4 k& `, `) j% j4 UThe diagnosis of exogenous androgens was strongly. C6 x* E' b7 E0 j% K N
suspected in a follow-up visit after 4 months because
' z# e& t' W) Q- J3 P, kthe physical examination revealed the complete disap-; m& W4 K/ ]2 d3 L
pearance of pubic hair, normal growth velocity, and$ C! h+ `, B; {' h- U) g N
decreased erections. The father admitted using a testos-+ g! d. O% W; Y( g7 r, W4 r
terone gel, which he concealed at first visit. He was
, x* [ }) S z1 g, \8 ?: S) ausing it rather frequently, twice a day. The Physicians’
I; f; e9 Q5 k4 g; C, z# U/ k/ kDesk Reference, or package insert of this product, gel or
9 g& a! {1 r j' u9 Q! U) [( |cream, cautions about dermal testosterone transfer to( D) f! v! q' \/ C* b( h/ j" V r
unprotected females through direct skin exposure.
0 Z: N. b, [9 o& XSerum testosterone level was found to be 2 times the" E$ C) h }) d! ]
baseline value in those females who were exposed to
( n: X @* M6 {# _even 15 minutes of direct skin contact with their male
. `7 G5 @+ K) o$ ^partners.6 However, when a shirt covered the applica-
/ R( y* | U; `/ ztion site, this testosterone transfer was prevented.
2 P8 Y6 ], _7 l8 I* V' U; XOur patient’s testosterone level was 60 ng/mL,: [. S8 f2 c4 Q+ \
which was clearly high. Some studies suggest that! I, E8 u* m0 o p' h4 E
dermal conversion of testosterone to dihydrotestos-3 E, \. S! w- U* |1 ~ Q) [# k: _
terone, which is a more potent metabolite, is more) \$ o) d2 L) r
active in young children exposed to testosterone
) G, r% b! G" }- texogenously7; however, we did not measure a dihy-$ Z6 L+ l6 d0 Q/ H4 B, A
drotestosterone level in our patient. In addition to
9 h' b3 F. H# s+ z1 f6 a% }virilization, exposure to exogenous testosterone in" b, H3 U8 d* ]7 C
children results in an increase in growth velocity and+ r$ Q1 p- o8 o6 J
advanced bone age, as seen in our patient.9 q% D. B( X0 D+ w! B
The long-term effect of androgen exposure during ^) L: a0 D/ g2 L$ X
early childhood on pubertal development and final, c/ `1 ` g" U8 O# c' a: h! c6 P
adult height are not fully known and always remain% ?( _! Y3 M: D j9 p- u
a concern. Children treated with short-term testos-% ?( q6 e6 {0 @- Y/ R; X6 \
terone injection or topical androgen may exhibit some8 |( n7 c) i d
acceleration of the skeletal maturation; however, after
% w8 n4 g+ c+ Bcessation of treatment, the rate of bone maturation
- L& \1 r& h; E( zdecelerates and gradually returns to normal.8,9& K' p5 i* N5 q N/ q: ^
There are conflicting reports and controversy3 B9 _) D! ?5 @" a9 g+ d2 `: v
over the effect of early androgen exposure on adult
3 X1 k8 Z/ V* M, ipenile length.10,11 Some reports suggest subnormal- Y% Q+ t' o4 `* P$ e
adult penile length, apparently because of downreg-5 R6 d) y5 |5 X. ?7 A% p) h# d
ulation of androgen receptor number.10,12 However,
4 @( b8 T0 H+ T; _1 P& ~4 F1 \; aSutherland et al13 did not find a correlation between
. R5 B0 g! m# kchildhood testosterone exposure and reduced adult
6 T) x- j* j0 S& x* i; Q3 Qpenile length in clinical studies.$ [3 z- d6 X! f1 w
Nonetheless, we do not believe our patient is
* G9 z+ x$ |# ?+ Lgoing to experience any of the untoward effects from
! \2 U( z7 K5 btestosterone exposure as mentioned earlier because
' l a. p6 E s( Y( g0 v; bthe exposure was not for a prolonged period of time.
$ M$ G8 v, {+ s2 z# P, n! NAlthough the bone age was advanced at the time of) m- y- V5 }7 F& G
diagnosis, the child had a normal growth velocity at" ?- Q/ q) k: A4 z* ` z$ d
the follow-up visit. It is hoped that his final adult6 c' {; t! _( ?9 u; Q9 _
height will not be affected.
6 I0 m5 _* k/ B9 OAlthough rarely reported, the widespread avail-
h1 {# n' X1 Y7 R$ C1 m' L5 ?ability of androgen products in our society may
* U' _. R9 i/ b# z- L) }- |indeed cause more virilization in male or female
2 `8 K" _" D2 y- ?* M9 u% |: qchildren than one would realize. Exposure to andro-
$ Z9 c+ x2 ?8 u% W+ E% K% Igen products must be considered and specific ques-
* K5 [, b8 c! ]tioning about the use of a testosterone product or7 K! a5 L) w ]2 G
gel should be asked of the family members during
8 F% o, ~5 V4 U8 T& T2 o8 {# xthe evaluation of any children who present with vir-
, D2 w X3 I& `9 K- Y" A* m) B, o8 Silization or peripheral precocious puberty. The diag-' V7 b T2 ]' V' G2 n
nosis can be established by just a few tests and by! `6 [9 O/ G5 N* o2 ^- h9 ?
appropriate history. The inability to obtain such a$ k7 W- R E% J7 M1 t' \3 A
history, or failure to ask the specific questions, may3 k4 v/ H* {8 t7 {3 B: T z |
result in extensive, unnecessary, and expensive
8 _) B3 E$ Q% X" ~: I5 Iinvestigation. The primary care physician should be
6 _( G% {. ?# O4 r6 Yaware of this fact, because most of these children
8 Y: u f0 ~; k9 c& C7 M; ]may initially present in their practice. The Physicians’7 o# A5 A0 X' I9 O# U7 s
Desk Reference and package insert should also put a
1 i1 r8 c' d. t8 d( \! \$ ^warning about the virilizing effect on a male or$ O( f; Z6 R# d. i; V
female child who might come in contact with some-8 h4 j) F1 F. a: w3 _* W
one using any of these products.
4 [7 h' f2 y" K0 r2 QReferences
9 Q, c! H6 v" C" h1. Styne DM. The testes: disorder of sexual differentiation5 w" {9 q8 w. U1 J& D5 a$ `
and puberty in the male. In: Sperling MA, ed. Pediatric, y% u# K: P$ |" {
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;& R6 I' g, e2 t( T
2002: 565-628.
* B1 x, X1 ~/ [# T# _: I7 w; Y2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious1 u3 R( P: n: O4 Y" e& y: C# S# y$ x
puberty in children with tumours of the suprasellar pineal |
|