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Sexual Precocity in a 16-Month-Old
! v$ l4 O4 F+ IBoy Induced by Indirect Topical+ A( C. C6 T7 \- X5 O
Exposure to Testosterone
# b# C2 |- Q5 A, X+ {6 FSamar K. Bhowmick, MD, FACE,1 Tracy Ricke, MD,2
5 k2 `* v! Y6 n# o |; I. l) K( nand Kenneth R. Rettig, MD1* k9 q& a8 f2 h& _: X
Clinical Pediatrics5 Q3 P! ]* j+ z) h3 M2 S( T* C
Volume 46 Number 6
; b3 o0 y% o: V. X p; G0 fJuly 2007 540-543
, Q7 e; U7 r( W2 F8 W& z© 2007 Sage Publications1 I w! C2 h8 x9 g9 F+ t$ h, w
10.1177/00099228062966514 w" H; B. `& }% w8 g! ]0 a
http://clp.sagepub.com
& a- \9 v2 _- P% A6 b+ uhosted at
. ^3 h/ c' c3 Jhttp://online.sagepub.com& r, E2 ~* m( \$ G c
Precocious puberty in boys, central or peripheral,
7 U3 l4 d; s G! @& v2 L$ zis a significant concern for physicians. Central
5 A9 L1 B1 o5 @- }$ b, Fprecocious puberty (CPP), which is mediated* P$ S! a& y7 s' W% h8 y
through the hypothalamic pituitary gonadal axis, has
5 m6 {) |6 C5 @9 `- F: [5 ia higher incidence of organic central nervous system5 K" J# X$ E* N' t
lesions in boys.1,2 Virilization in boys, as manifested
3 a* |) e( a5 g# L' ]' Jby enlargement of the penis, development of pubic
* w6 b4 w; j' k2 d* Ihair, and facial acne without enlargement of testi-3 ]: A! k! F7 W, ^+ P
cles, suggests peripheral or pseudopuberty.1-3 We- H5 B' y3 a3 v
report a 16-month-old boy who presented with the
f1 A( s. N( [% qenlargement of the phallus and pubic hair develop-
8 J( u/ E) v5 `- K( j0 [# cment without testicular enlargement, which was due
% Z( H0 j6 l- e6 S' p5 j; pto the unintentional exposure to androgen gel used by1 ^# S; ^# v0 R
the father. The family initially concealed this infor-
2 ~! }6 U* D+ m- n( T, S+ ^mation, resulting in an extensive work-up for this
: `) Q1 [) L% D5 A0 Hchild. Given the widespread and easy availability of
& _8 I4 Q1 f' W( Etestosterone gel and cream, we believe this is proba-
( w. \+ `1 `/ I# E' B0 Cbly more common than the rare case report in the9 z) m7 ?" ^: s3 V6 B0 b
literature.4" X9 m+ V$ S( V2 `
Patient Report! ]' f- \" E* O; \8 F& G, X
A 16-month-old white child was referred to the
, X+ J0 I# T$ S# w: m+ n0 _0 \endocrine clinic by his pediatrician with the concern
2 k8 K- Z6 u2 P0 \. o: pof early sexual development. His mother noticed
6 R) n& ^! Y; `2 Z @! e' S, elight colored pubic hair development when he was4 T6 w, M8 X. s) K
From the 1Division of Pediatric Endocrinology, 2University of7 F7 O* j! Z8 P: X
South Alabama Medical Center, Mobile, Alabama.3 M, ?) v( O; C: T% l
Address correspondence to: Samar K. Bhowmick, MD, FACE,- Z6 w2 ]. B) v+ \* s7 q& A
Professor of Pediatrics, University of South Alabama, College of
% b. \3 X0 w7 T* t; }7 D# H) yMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
$ o) H Z8 o+ N. Ze-mail: [email protected].
( Z( \( O8 A4 u4 d; u9 Q8 ]2 {* Kabout 6 to 7 months old, which progressively became
3 U3 f" D9 \ m* O, y& |$ bdarker. She was also concerned about the enlarge-) [) n( o1 `. F- s# L% [
ment of his penis and frequent erections. The child
0 d0 u/ ]* F) N* B; n. ?was the product of a full-term normal delivery, with
- c" Q: r" G9 Y8 ]* b0 Q1 Ea birth weight of 7 lb 14 oz, and birth length of
x+ j/ H' G2 |2 U' Y! `6 O9 l20 inches. He was breast-fed throughout the first year- l* i: a3 L2 ~) C7 k
of life and was still receiving breast milk along with& R3 c5 M: ~; f. l! f. r3 ]/ M4 u
solid food. He had no hospitalizations or surgery," ~ G% | S' g2 @1 C$ D* N5 ^
and his psychosocial and psychomotor development5 w2 M% r+ V- w4 X/ g, U2 T8 y" W
was age appropriate.5 X( t. j4 t( x. ~9 L2 n7 @- J5 O6 D
The family history was remarkable for the father,
" S; c( d& n3 q1 T) F9 L* Iwho was diagnosed with hypothyroidism at age 16,
/ S& M: u5 M( ewhich was treated with thyroxine. The father’s$ P- \9 G1 F+ a& [7 Q" c) w; `
height was 6 feet, and he went through a somewhat- g" w+ C R# }( K: P' O0 \1 e
early puberty and had stopped growing by age 14.- ^; ~8 U, J5 Y
The father denied taking any other medication. The
7 u7 K4 g7 @9 y/ U$ X, J" m0 |child’s mother was in good health. Her menarche2 t5 x1 g' @" c- n
was at 11 years of age, and her height was at 5 feet- w0 o4 e7 p' }1 K: P. Z
5 inches. There was no other family history of pre-, h/ e0 } a( l9 `9 L' k1 }# k
cocious sexual development in the first-degree rela-2 R( |3 \9 y4 k( i0 h
tives. There were no siblings.5 X% d5 V8 s/ ?2 S* R2 j6 `
Physical Examination
6 ]2 {2 t# p- F' \9 b: d' dThe physical examination revealed a very active,; \3 ^+ \# N1 O/ S- H& e9 k
playful, and healthy boy. The vital signs documented
* a0 p3 y9 V7 O; U2 ha blood pressure of 85/50 mm Hg, his length was a; @1 n6 s2 t; w
90 cm (>97th percentile), and his weight was 14.4 kg
7 B& o$ r {" V$ ~5 W* T/ Q. {(also >97th percentile). The observed yearly growth- w/ T& u$ b/ d6 T
velocity was 30 cm (12 inches). The examination of
6 U ?; Q4 p4 R: Y3 @- k; bthe neck revealed no thyroid enlargement.
+ S" c# O2 @ }8 iThe genitourinary examination was remarkable for
# a; A/ g7 G" D; U, |1 Venlargement of the penis, with a stretched length of' ~7 V2 T5 z7 `( \$ T8 w
8 cm and a width of 2 cm. The glans penis was very well) g( z" S+ O, k. [
developed. The pubic hair was Tanner II, mostly around
* _, C2 b! D# @8 U" k& `) x7 i5404 j/ _. K8 e! B- C" L
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
) W1 |. |# b. O1 }% A& Cthe base of the phallus and was dark and curled. The5 G# a: R' i/ y$ M5 n$ N+ ]5 `1 @# J
testicular volume was prepubertal at 2 mL each.
* L: E% G4 y3 L2 z! _The skin was moist and smooth and somewhat7 q F/ `4 a f& ]6 M
oily. No axillary hair was noted. There were no
" ~' N: }5 O9 J8 k# U- t2 aabnormal skin pigmentations or café-au-lait spots.
- E4 s4 z8 a f2 o, _1 }" wNeurologic evaluation showed deep tendon reflex 2+
* [- N7 ^/ U/ Z7 Q2 t" y* ^bilateral and symmetrical. There was no suggestion
* M# M+ `# T5 m/ _& L; w8 uof papilledema., ?! V0 N8 K2 H1 r, P" V2 g
Laboratory Evaluation
, b: j! E( O2 d9 sThe bone age was consistent with 28 months by+ |, L# ~$ D$ p' L
using the standard of Greulich and Pyle at a chrono-2 d. Y1 |) c0 R1 C& f
logic age of 16 months (advanced).5 Chromosomal/ z6 d- G) v/ r, n+ M7 f
karyotype was 46XY. The thyroid function test
- R8 a2 S8 f- vshowed a free T4 of 1.69 ng/dL, and thyroid stimu-
6 N5 ~% l" O; Qlating hormone level was 1.3 µIU/mL (both normal).
2 n1 q- l6 w: d& Z8 y" DThe concentrations of serum electrolytes, blood
6 r8 V+ n( Q i; D) S4 Y8 Y0 X2 |urea nitrogen, creatinine, and calcium all were
" b# z/ D; P" g3 p. ]0 Y$ c: Cwithin normal range for his age. The concentration4 `# W1 G* @3 F& A8 S' t3 t
of serum 17-hydroxyprogesterone was 16 ng/dL" ^7 |6 c3 a$ T4 O2 X
(normal, 3 to 90 ng/dL), androstenedione was 20% O) q2 `7 k9 F1 m
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-' m6 I2 V' A8 u3 \4 d
terone was 38 ng/dL (normal, 50 to 760 ng/dL),# |8 P: _0 C7 \: S. s
desoxycorticosterone was 4.3 ng/dL (normal, 7 to$ e& k. ^$ v' V. Q
49ng/dL), 11-desoxycortisol (specific compound S)! e6 Q1 W* f( V! p
was 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-, Y! m/ s4 q4 n2 g
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total% v! f5 G5 Z- r+ [( Z
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),! c; j k( I' Z- G" {% Y
and β-human chorionic gonadotropin was less than% l6 d5 J7 ?0 l( ]' A5 D
5 mIU/mL (normal <5 mIU/mL). Serum follicular, A, S$ B' J$ M) p0 u; M4 L
stimulating hormone and leuteinizing hormone* l" l+ ]' c1 A, p0 w5 O
concentrations were less than 0.05 mIU/mL
$ K0 ?: K( G7 X7 ](prepubertal).2 J7 L+ ^2 Y# x8 F
The parents were notified about the laboratory
7 L1 @& C1 z% o" e& bresults and were informed that all of the tests were- I9 u* ]+ K E7 Q, Y1 [
normal except the testosterone level was high. The
. U$ G, o8 K1 I& ^* ~follow-up visit was arranged within a few weeks to
9 x, ]% \; }) r9 }obtain testicular and abdominal sonograms; how-
, R; m+ V) H u& z0 X a, \ever, the family did not return for 4 months.
5 j. e: X# v0 yPhysical examination at this time revealed that the, ?9 | z4 L i& D
child had grown 2.5 cm in 4 months and had gained
& {7 v- r' ^% W: g5 Y$ z n2 kg of weight. Physical examination remained
$ @1 G: ^# T/ C8 Y% a6 Funchanged. Surprisingly, the pubic hair almost com-# y- }& K2 F: c
pletely disappeared except for a few vellous hairs at: o- x; F& i1 J/ Q
the base of the phallus. Testicular volume was still 2
! p( N& n5 c& S; c* j* [) z; PmL, and the size of the penis remained unchanged. o8 f e$ o; |9 f9 t Q* s9 |
The mother also said that the boy was no longer hav-5 c& `; `3 W. F% L8 K
ing frequent erections.
' r& e$ M; r% m: { `' e# LBoth parents were again questioned about use of
! a) H; K/ G) Oany ointment/creams that they may have applied to# h. r2 N6 R3 S0 d
the child’s skin. This time the father admitted the2 U9 @" F& _3 W1 `
Topical Testosterone Exposure / Bhowmick et al 541
. a3 ?# v2 s) d8 iuse of testosterone gel twice daily that he was apply-! g+ @& v" |- y6 k3 D
ing over his own shoulders, chest, and back area for. A3 u# F1 n3 C" D0 p# H1 B+ B
a year. The father also revealed he was embarrassed
+ Q9 f3 @" b2 f% e* ato disclose that he was using a testosterone gel pre-6 n0 t! Q/ k0 N" W9 V( D+ c6 B
scribed by his family physician for decreased libido; }8 R1 A4 ^' x# s l6 F, r
secondary to depression.9 `7 n J P( S ]
The child slept in the same bed with parents.
/ V% G" @) ^ M4 y3 X$ hThe father would hug the baby and hold him on his K! M1 H( \/ P+ P* @" }
chest for a considerable period of time, causing sig-
, w: G- O5 y' O: G, M# Dnificant bare skin contact between baby and father.
0 D# s" @9 K1 v5 [The father also admitted that after the phone call,
8 t9 R# g; Y' y0 K) E/ a: zwhen he learned the testosterone level in the baby3 r. c( c7 C7 X( d# G
was high, he then read the product information$ b8 q* ?7 T+ k+ N/ z: m
packet and concluded that it was most likely the rea-7 d# j5 V# u, s5 x) D) j3 }
son for the child’s virilization. At that time, they
$ Y6 d; M! f& W+ k' A" [/ ?( u2 Udecided to put the baby in a separate bed, and the8 c- f+ b8 y, F6 L' |. k( P9 ]
father was not hugging him with bare skin and had
; Z/ A, {7 R8 dbeen using protective clothing. A repeat testosterone
+ v; ]. S4 S5 dtest was ordered, but the family did not go to the7 N& o7 E2 K+ b: j' l
laboratory to obtain the test.! t$ R" O/ }' C: n, @& ]; _
Discussion
4 c7 E+ P- h0 q3 o0 p% xPrecocious puberty in boys is defined as secondary- p8 j4 L6 I# f2 A! v. c" \8 y! t
sexual development before 9 years of age.1,4
4 n. H9 y7 l1 l- E: ~Precocious puberty is termed as central (true) when1 ^' w# z6 B5 d" i
it is caused by the premature activation of hypo-& x, w' A; J* h( e
thalamic pituitary gonadal axis. CPP is more com-
* F4 u" ]" |+ ?. |mon in girls than in boys.1,3 Most boys with CPP
, ^& @$ J) L5 Y5 x# W/ xmay have a central nervous system lesion that is
; K3 ]% _/ z/ dresponsible for the early activation of the hypothal-* f- o6 V/ K, m8 u' Y' w
amic pituitary gonadal axis.1-3 Thus, greater empha- l$ M5 [" Y- H8 S" j
sis has been given to neuroradiologic imaging in! s* g; ~* E' l+ d
boys with precocious puberty. In addition to viril-% O( J: Y9 _& _9 ?
ization, the clinical hallmark of CPP is the symmet-8 b9 u" L& K) p9 F! g( y
rical testicular growth secondary to stimulation by1 P3 f) F1 g3 E s$ A3 [
gonadotropins.1,3
& l+ Y! x3 C8 V* `7 gGonadotropin-independent peripheral preco-
, L, u0 ?% B1 @3 A2 B# ecious puberty in boys also results from inappropriate
% s) I: G/ k: i! L- D+ _) randrogenic stimulation from either endogenous or) W+ O$ E7 T2 s0 Q
exogenous sources, nonpituitary gonadotropin stim-0 v/ t0 A% @" ]9 T
ulation, and rare activating mutations.3 Virilizing
8 {; f, S7 Y' I$ Ncongenital adrenal hyperplasia producing excessive
/ d. ?% j3 O4 k- Oadrenal androgens is a common cause of precocious
* g* d* I" v4 {% | @0 Qpuberty in boys.3,4
- t/ t' y/ a; g5 V3 W! M0 d6 HThe most common form of congenital adrenal
- B" u8 w$ _* J3 K" V) {6 chyperplasia is the 21-hydroxylase enzyme deficiency.
8 E- h$ |& M; fThe 11-β hydroxylase deficiency may also result in; ?, @4 @1 @. p0 |: u
excessive adrenal androgen production, and rarely,
$ s7 Y7 y0 _5 b i' y8 h2 m( van adrenal tumor may also cause adrenal androgen. p. z z& M0 U/ w6 f9 u
excess.1,3
, A2 c1 M; p4 J3 K0 kat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
9 X5 F7 E* g( O' G" x542 Clinical Pediatrics / Vol. 46, No. 6, July 2007
- r; O# D+ D9 K0 M" ] ZA unique entity of male-limited gonadotropin-
% H" U/ }# O+ uindependent precocious puberty, which is also known7 z- U. o3 ~( v$ \0 J4 Y! @* ~
as testotoxicosis, may cause precocious puberty at a8 d1 H' c0 U. C/ l" G- R
very young age. The physical findings in these boys9 q/ s7 ?2 ]4 h& ?/ S9 q5 c
with this disorder are full pubertal development,
~) f) @) s& n! sincluding bilateral testicular growth, similar to boys0 P6 d- b; t7 b
with CPP. The gonadotropin levels in this disorder
. @2 l5 w3 a L, T3 `8 Z, X: ware suppressed to prepubertal levels and do not show
/ }1 h% |: B' v6 Y' S, X+ `pubertal response of gonadotropin after gonadotropin-
" k0 i- r/ m. c" L5 X; b8 Creleasing hormone stimulation. This is a sex-linked0 W# o( A& ]: U
autosomal dominant disorder that affects only
% c, @* q7 j7 q6 qmales; therefore, other male members of the family# [0 F9 M: U. r8 w/ C. v
may have similar precocious puberty.3
% f2 h L- P$ |1 B% [$ A2 Z9 ^In our patient, physical examination was incon-; K0 Y( M& |3 |1 F2 ]2 ?9 t* c
sistent with true precocious puberty since his testi- g% _, P t8 \
cles were prepubertal in size. However, testotoxicosis6 Z) J7 H' H" P% K+ p# b1 b# b
was in the differential diagnosis because his father8 Q" @' X9 x) H# d5 h! `
started puberty somewhat early, and occasionally,/ Q5 v! r9 P( `4 V) u% |
testicular enlargement is not that evident in the) F1 n4 P, a9 }# m1 v6 V
beginning of this process.1 In the absence of a neg-& R# V# I( ?7 n
ative initial history of androgen exposure, our
( R6 v7 U7 l- j$ tbiggest concern was virilizing adrenal hyperplasia,
N5 I6 e. H+ b+ Q& h4 ?/ J) |1 Teither 21-hydroxylase deficiency or 11-β hydroxylase+ F, E# m' i. c' ~
deficiency. Those diagnoses were excluded by find-
3 G1 E, H3 D6 A9 h% b7 D0 R: Aing the normal level of adrenal steroids.' _: `; m, @, Q5 M& A& F
The diagnosis of exogenous androgens was strongly6 N4 f3 K- f4 f( g) i2 b
suspected in a follow-up visit after 4 months because) K h; K, k9 |" [4 d- K i
the physical examination revealed the complete disap-
9 G' N& F2 l1 K" h- hpearance of pubic hair, normal growth velocity, and
! L- p4 ^/ O7 y& Qdecreased erections. The father admitted using a testos-0 ]7 }/ ]4 R5 f$ H2 {$ r
terone gel, which he concealed at first visit. He was9 N1 ?7 Y) g( q( h
using it rather frequently, twice a day. The Physicians’+ ] K) L, e' T
Desk Reference, or package insert of this product, gel or0 \* A: L- Y$ D b- A2 M
cream, cautions about dermal testosterone transfer to6 ^- K: z6 k' A/ E2 C* ]& d
unprotected females through direct skin exposure.
$ R/ r g2 v, T+ } Z+ e4 Y8 `Serum testosterone level was found to be 2 times the
- {* K2 M; X4 i. K7 b! Rbaseline value in those females who were exposed to
/ u# M, ^+ a5 S' O4 O! V+ g$ Eeven 15 minutes of direct skin contact with their male' r# t T, K+ F5 Z6 E2 G% i
partners.6 However, when a shirt covered the applica-; ^ h0 h6 f4 ~0 R- I
tion site, this testosterone transfer was prevented.
; _/ T+ n9 |# t( d# P' t: fOur patient’s testosterone level was 60 ng/mL,( r3 f9 K) e3 w; u6 h- }5 c
which was clearly high. Some studies suggest that- P9 F6 P2 E F1 s
dermal conversion of testosterone to dihydrotestos-6 R( G- z$ c* b' G
terone, which is a more potent metabolite, is more, l; O. l, z t5 m: T, ]/ j
active in young children exposed to testosterone( x$ W9 U* q) R- i3 D
exogenously7; however, we did not measure a dihy-2 \- M5 G l8 d7 w* N" m
drotestosterone level in our patient. In addition to0 n$ A5 _: g& d; z1 K |8 R* R% J
virilization, exposure to exogenous testosterone in0 t1 g6 C- \# m& J7 b) ^
children results in an increase in growth velocity and
% a: F/ ~* s4 [6 N; O; ^; kadvanced bone age, as seen in our patient. M0 g; z; E! o3 m: G
The long-term effect of androgen exposure during7 C; ]( W& x$ b: {$ {- P) l. n
early childhood on pubertal development and final4 z( }7 j% k# A. }5 i& s
adult height are not fully known and always remain4 P3 P2 z/ Z3 g5 S" y9 D/ O. I
a concern. Children treated with short-term testos-1 S" N+ _+ ^9 `9 l
terone injection or topical androgen may exhibit some$ J" G& y" a/ k4 q$ Q; H" `
acceleration of the skeletal maturation; however, after
8 H8 B: A& A8 m/ w6 h; X+ r; Dcessation of treatment, the rate of bone maturation
|5 L5 S6 l% R1 ~$ Tdecelerates and gradually returns to normal.8,98 H( l; A3 G+ D0 @+ g. r
There are conflicting reports and controversy+ H8 a1 w, i# ?. ]% k
over the effect of early androgen exposure on adult6 |# v: ?1 U% A
penile length.10,11 Some reports suggest subnormal& a) a& w4 r9 j! D9 e6 c. ~
adult penile length, apparently because of downreg-1 {2 ^: o4 l0 A. Y% P0 J! w
ulation of androgen receptor number.10,12 However,
! \8 A; ]/ i/ N0 y0 k2 k! uSutherland et al13 did not find a correlation between
4 t. o$ A7 t6 s: Q3 l! Nchildhood testosterone exposure and reduced adult
& X8 ]% J, N+ s" Qpenile length in clinical studies.: `/ x/ k( \, \7 K9 G
Nonetheless, we do not believe our patient is
; G4 ?4 e$ Z, {) V' h, J+ r) Vgoing to experience any of the untoward effects from
0 f; F* Y% E1 Z; n7 s+ g" gtestosterone exposure as mentioned earlier because3 l( b( h7 A3 r; O
the exposure was not for a prolonged period of time.) D: f& @! h" X* r6 K$ G4 N
Although the bone age was advanced at the time of3 o: M& G8 e/ B
diagnosis, the child had a normal growth velocity at2 O7 j8 F+ D% q; |9 N! g$ y" N
the follow-up visit. It is hoped that his final adult* O- ^, `" `, E$ Y* l/ k
height will not be affected.
+ C2 e5 u7 T0 ~" O( [3 P, HAlthough rarely reported, the widespread avail-: r w, {& a2 T& b/ W8 a$ X
ability of androgen products in our society may
+ ]0 K) Q7 `' q4 a% s" B, iindeed cause more virilization in male or female- G/ a# U3 M* C8 c6 F5 {2 S
children than one would realize. Exposure to andro-
$ N3 f1 b: D* x# @gen products must be considered and specific ques-1 R* }0 e: W: P/ x3 L8 ] `
tioning about the use of a testosterone product or/ A+ J# n) l" R4 v8 X6 l
gel should be asked of the family members during
' O' V4 J @- U7 Q& _the evaluation of any children who present with vir-
+ P9 L" x; w# lilization or peripheral precocious puberty. The diag-
( E/ ?' R" W2 c3 v& N' k" e" Enosis can be established by just a few tests and by7 X' v- t, y1 U& @' ~: s3 n0 r
appropriate history. The inability to obtain such a& e' M8 l4 s' X$ X# ]3 ]4 I( j9 T
history, or failure to ask the specific questions, may' c2 {9 {: M* x% X( d, n
result in extensive, unnecessary, and expensive
% m. i; u5 b0 U" @- zinvestigation. The primary care physician should be6 T. r) @% Q$ L/ X6 v
aware of this fact, because most of these children
' w/ d @, c6 {% amay initially present in their practice. The Physicians’7 a' Z% D' [4 H' B
Desk Reference and package insert should also put a
. S! I4 G F6 p! pwarning about the virilizing effect on a male or, R& p3 k% F- M6 o& W
female child who might come in contact with some-
( z) i) ^$ J4 A* A9 zone using any of these products., o; N' w- J: F' i# s
References
- F2 H/ L9 v$ i$ s: j1. Styne DM. The testes: disorder of sexual differentiation4 g5 ]# Y' X6 \( I( X) E
and puberty in the male. In: Sperling MA, ed. Pediatric
! i/ Y/ r, o0 k; {2 n! f0 sEndocrinology. 2nd ed. Philadelphia, PA: WB Saunders;2 d7 |9 I z! Q/ A' [5 Q# h% ~9 k
2002: 565-628.9 P# y7 Q" {" b" l- s G4 q
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious/ y) r# ~ l6 u4 e- b& A! z$ s
puberty in children with tumours of the suprasellar pineal |
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