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Sexual Precocity in a 16-Month-Old" [" m4 U5 d* Q+ x
Boy Induced by Indirect Topical
y5 ~7 g& r' L. s5 L1 n( E8 S4 TExposure to Testosterone
2 |/ {5 Q; R0 G7 MSamar K. Bhowmick, MD, FACE,1 Tracy Ricke, MD,2
8 ~ D4 `' n/ A4 o3 Land Kenneth R. Rettig, MD1
6 [+ t8 i( b, K+ ?, U. OClinical Pediatrics- C7 J. r) w: l
Volume 46 Number 6
* m9 Z- L- q( S; j2 {- V! D* BJuly 2007 540-543
! z0 @4 b! }6 K: D& m© 2007 Sage Publications
# f7 t0 H4 x4 s' ?4 ^10.1177/0009922806296651
# ^3 _. u1 ]! ^4 N+ A- y; dhttp://clp.sagepub.com% R. N( n) y; W1 i
hosted at+ n+ H6 t0 _2 q, x4 a9 G
http://online.sagepub.com
6 D) T% q; l# E3 g+ |Precocious puberty in boys, central or peripheral,' i+ @" O8 c ?2 X: A7 F/ C
is a significant concern for physicians. Central) Q6 h& S: q0 d) F2 H0 `. o
precocious puberty (CPP), which is mediated6 U+ ^; }+ ]8 e$ Z0 m D
through the hypothalamic pituitary gonadal axis, has
9 ?* _8 I+ g- Y- Ca higher incidence of organic central nervous system
/ E" [% L: w5 ]! b$ Nlesions in boys.1,2 Virilization in boys, as manifested% K W) H; Z7 |5 E5 i1 ~
by enlargement of the penis, development of pubic
* q' J% O- q) R, ]4 ?' m. Z7 khair, and facial acne without enlargement of testi-
+ P: Z5 `; h% p; ?$ wcles, suggests peripheral or pseudopuberty.1-3 We% ^, ~$ \( W, I2 H
report a 16-month-old boy who presented with the, V0 x4 J) o: i* O. g J$ @& K
enlargement of the phallus and pubic hair develop-# F! s; r4 Y. r' r+ c) m5 W w+ u
ment without testicular enlargement, which was due# c l5 V' R3 P, L) S* p
to the unintentional exposure to androgen gel used by8 f/ ?8 v2 U8 J$ W
the father. The family initially concealed this infor-3 P: l% H9 l! ]0 f5 {1 H
mation, resulting in an extensive work-up for this4 u% A3 d3 k, I- W& b" N
child. Given the widespread and easy availability of
; ~; w9 k) N9 i# h! s/ I. ^testosterone gel and cream, we believe this is proba-, I" ]( R# ]6 F
bly more common than the rare case report in the& ~8 u5 r* x% B$ `
literature.4
1 E5 n+ Y1 D. W6 i5 a7 M% |! pPatient Report
! e5 g% g0 {; _( W: KA 16-month-old white child was referred to the; i J# [6 |) I" N
endocrine clinic by his pediatrician with the concern
* e7 k: Q+ Y( v1 F3 e) @of early sexual development. His mother noticed! F% ]7 \2 Q% Y" r# {0 Y$ N8 g
light colored pubic hair development when he was
+ ]* |8 i: n+ sFrom the 1Division of Pediatric Endocrinology, 2University of/ U8 Y Y- O$ \1 H W U
South Alabama Medical Center, Mobile, Alabama.* c" ^6 t, \0 ?% w
Address correspondence to: Samar K. Bhowmick, MD, FACE,
, R; [+ J2 U& U0 U2 P9 f# }5 M$ pProfessor of Pediatrics, University of South Alabama, College of
9 r) S+ ?5 }7 g( eMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
+ \7 b* D+ a2 M$ x4 Q+ pe-mail: [email protected].$ T6 I1 G$ p* i! L
about 6 to 7 months old, which progressively became% X5 M2 ?7 v+ N. B
darker. She was also concerned about the enlarge-
% k) J. V$ s1 `) nment of his penis and frequent erections. The child
6 ~3 a2 w' W$ g* J" s, q& Lwas the product of a full-term normal delivery, with4 \3 ?$ @. M7 d, d7 \5 o, u
a birth weight of 7 lb 14 oz, and birth length of Q# z4 s0 y, D! r7 E" c
20 inches. He was breast-fed throughout the first year* d, ~# A! K7 u( x4 S
of life and was still receiving breast milk along with. X9 S: Y$ _4 A8 Q
solid food. He had no hospitalizations or surgery,
+ f6 B! y5 ^9 {, i$ ?and his psychosocial and psychomotor development$ k9 v0 ^' J }
was age appropriate.
& }/ s# e$ O* v3 l* D" n' ]) UThe family history was remarkable for the father,
2 {5 G( r, j# U& mwho was diagnosed with hypothyroidism at age 16,2 {% d, \- r2 G5 b1 f! |3 P: @
which was treated with thyroxine. The father’s r I$ j0 C5 ]
height was 6 feet, and he went through a somewhat6 }. _7 \5 t: n. X
early puberty and had stopped growing by age 14.
' e( ?- S. N' `, RThe father denied taking any other medication. The9 @$ x* g: @8 J* D, L% c. T
child’s mother was in good health. Her menarche& g. w6 N( F, l" K7 ?( a1 R
was at 11 years of age, and her height was at 5 feet2 h/ n7 E9 e* `1 A3 z8 @
5 inches. There was no other family history of pre-) U& N9 D% i* e1 {
cocious sexual development in the first-degree rela-
3 V3 V$ f4 v9 N5 {9 h: utives. There were no siblings.
) l' J( ]1 c+ X' G' l0 i. OPhysical Examination
9 z7 g- X6 i+ w$ ZThe physical examination revealed a very active,
- X; A8 y( J1 o7 {3 l- [+ ~playful, and healthy boy. The vital signs documented1 P' m% ^% R- \# c) F" L( K' p( `
a blood pressure of 85/50 mm Hg, his length was
* V, s8 ?* W# H8 e2 ?) @+ G1 C90 cm (>97th percentile), and his weight was 14.4 kg( k* S l4 L) v9 T7 t! F
(also >97th percentile). The observed yearly growth% ~, T# x! N& R
velocity was 30 cm (12 inches). The examination of( g8 @& H) H: ^8 G _) p# V6 w" @
the neck revealed no thyroid enlargement.7 v) R5 P9 Y, b
The genitourinary examination was remarkable for# z8 j3 j+ X9 Z1 ?% t c
enlargement of the penis, with a stretched length of7 c/ h) \; P- O
8 cm and a width of 2 cm. The glans penis was very well
" ]0 V/ X8 ^) V. g" d# L5 ~7 ideveloped. The pubic hair was Tanner II, mostly around
( S) ]1 k; i6 I0 ~) r- {540
9 q% B8 \0 }' P! \at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
5 \, `) J! U# t F/ C4 l& Fthe base of the phallus and was dark and curled. The
, {5 |; P6 f4 H/ gtesticular volume was prepubertal at 2 mL each.
7 S' O h6 Q( l |& ZThe skin was moist and smooth and somewhat+ p& q4 C2 g# e$ k
oily. No axillary hair was noted. There were no4 g/ v2 @1 s6 @# D/ H z
abnormal skin pigmentations or café-au-lait spots.2 e: ^5 f k% l! q+ }
Neurologic evaluation showed deep tendon reflex 2+% @$ i3 ]4 [ ^7 F1 b- ^
bilateral and symmetrical. There was no suggestion
5 _7 l& \) R, D4 P1 q9 p% H9 \of papilledema.0 E0 X9 p4 R+ R1 C+ U, J& G. S- u
Laboratory Evaluation
2 L8 [$ T: [; TThe bone age was consistent with 28 months by( h# X, p3 S0 a( j9 ]
using the standard of Greulich and Pyle at a chrono-
; \; k L7 q( t2 tlogic age of 16 months (advanced).5 Chromosomal* T" }) ?! F, [
karyotype was 46XY. The thyroid function test" W8 R5 i: W; O" @
showed a free T4 of 1.69 ng/dL, and thyroid stimu-+ z/ a( f% W) X
lating hormone level was 1.3 µIU/mL (both normal).
- [1 ~5 I" A. ]" |% VThe concentrations of serum electrolytes, blood
( g/ J, ?0 v2 q9 e7 Curea nitrogen, creatinine, and calcium all were7 c9 y- r! L2 R9 T
within normal range for his age. The concentration
+ w1 I0 s7 h3 O# n) qof serum 17-hydroxyprogesterone was 16 ng/dL2 x- m$ W; Z) U3 s2 H
(normal, 3 to 90 ng/dL), androstenedione was 20, H7 }2 E% `7 `. i* j0 P+ s
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-) b8 C- i( {4 V# |/ Q
terone was 38 ng/dL (normal, 50 to 760 ng/dL),% I, b5 J o0 `
desoxycorticosterone was 4.3 ng/dL (normal, 7 to
3 |8 ^! t- L7 Z* e1 A4 |! h* m49ng/dL), 11-desoxycortisol (specific compound S)
2 X9 y, e: {8 F) lwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-9 t. _& w' _& N6 \( K+ m# K8 F6 c
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
. r7 ~2 c- z) _; F, {testosterone was 60 ng/dL (normal <3 to 10 ng/dL),4 r0 |3 x8 N$ J' l) ~: D7 I
and β-human chorionic gonadotropin was less than* T N6 f3 z! V' y
5 mIU/mL (normal <5 mIU/mL). Serum follicular
- ~# I# m; J* }1 f! h; ~- Ostimulating hormone and leuteinizing hormone8 K6 p! O. {. X- Y$ }
concentrations were less than 0.05 mIU/mL& T6 Q7 X$ V4 r
(prepubertal).
, c( _( \% R7 S* |& v3 I2 f; nThe parents were notified about the laboratory7 [9 g2 _$ D- @1 K- v( ^5 a U
results and were informed that all of the tests were% e* b1 R. J7 p3 i8 |6 }; e
normal except the testosterone level was high. The5 q Z0 z' g0 R2 C4 j- E7 `
follow-up visit was arranged within a few weeks to( Y+ R3 G0 {. |* A
obtain testicular and abdominal sonograms; how-
/ B5 J0 |' {7 Z4 i$ Pever, the family did not return for 4 months.8 U& c j7 U p) ?8 E; c: Z
Physical examination at this time revealed that the
. |* b+ f. e; T9 i1 ?child had grown 2.5 cm in 4 months and had gained, O% ^2 A, O1 p6 i; G
2 kg of weight. Physical examination remained7 [/ _9 Q+ c$ n1 L+ X
unchanged. Surprisingly, the pubic hair almost com-" o- _( L; t' j! ?1 V
pletely disappeared except for a few vellous hairs at
. ]" o. r3 I0 }0 s k# kthe base of the phallus. Testicular volume was still 2( t! e2 Y8 q& _
mL, and the size of the penis remained unchanged." h! D3 N5 A! g. s
The mother also said that the boy was no longer hav- _( f' ~! ]+ D( F/ X
ing frequent erections.
6 D0 Z" I5 m; B. |/ h4 bBoth parents were again questioned about use of8 t9 D% v7 j! m" g# _7 e+ E& F3 Q1 \
any ointment/creams that they may have applied to% ^) Y9 y v! e1 s7 h' {+ Z' m
the child’s skin. This time the father admitted the6 u* ~/ F6 ^7 E. z8 i! N! L$ M
Topical Testosterone Exposure / Bhowmick et al 541% \! t* |4 x% u6 b& s2 h
use of testosterone gel twice daily that he was apply-
* X8 i+ n0 b5 b- z$ Hing over his own shoulders, chest, and back area for
% k2 A4 O3 ^' R3 ]4 o$ q2 ?3 U% Aa year. The father also revealed he was embarrassed# V, v$ ] O- X2 W. k+ o
to disclose that he was using a testosterone gel pre-
& \2 |" D, m( S3 J! \0 I/ }scribed by his family physician for decreased libido4 d* m; L" w% }3 x: @
secondary to depression.3 S5 m. O3 a+ ?0 z f! ^* e
The child slept in the same bed with parents.+ d; M9 Q! G$ d' j' k: n! F- |' R6 _
The father would hug the baby and hold him on his
; @" c* I! E$ `+ p" echest for a considerable period of time, causing sig-1 A6 I$ k# p* c5 D2 C% H
nificant bare skin contact between baby and father.
2 M8 ]% g# x4 v. b. A9 DThe father also admitted that after the phone call,
5 C5 g5 I+ w% Q6 dwhen he learned the testosterone level in the baby
% o# C {$ C/ c& @- s! q0 t4 Cwas high, he then read the product information. J0 P! g. a% R. o! I0 Q; Y
packet and concluded that it was most likely the rea-
6 F8 a1 S" Q$ a) A& dson for the child’s virilization. At that time, they) _2 I! J) Y. H1 X$ K7 V
decided to put the baby in a separate bed, and the- U, K- m1 v9 M3 |: g+ N
father was not hugging him with bare skin and had( ?$ H3 f* H: o
been using protective clothing. A repeat testosterone8 n3 k6 R9 h7 l/ `( t
test was ordered, but the family did not go to the
( G! |! m9 e/ i; X& d% \. Qlaboratory to obtain the test.
' E3 \( D/ A; K. W& vDiscussion4 o) E# _6 b ~0 c! s# S
Precocious puberty in boys is defined as secondary
- Q0 [1 A! x7 M% @sexual development before 9 years of age.1,4, ]! y {* c5 X5 |9 M
Precocious puberty is termed as central (true) when3 s; n, q) R, l+ D
it is caused by the premature activation of hypo-) W- s# v7 g! u
thalamic pituitary gonadal axis. CPP is more com-" {: a, d% y5 _: i
mon in girls than in boys.1,3 Most boys with CPP
$ m2 c: M' A8 P+ E3 h; Jmay have a central nervous system lesion that is
4 o' d9 e- r% ]7 Z, L7 E, ?% Oresponsible for the early activation of the hypothal-% J$ N# d* v0 H* g2 K
amic pituitary gonadal axis.1-3 Thus, greater empha-9 q7 T. O9 C7 t5 ?8 A$ ~' t
sis has been given to neuroradiologic imaging in! n0 W1 ^* {, f$ _: C5 G5 v
boys with precocious puberty. In addition to viril-0 t% Z* Y7 G U( A0 T
ization, the clinical hallmark of CPP is the symmet-. Z w% W6 F/ n0 B
rical testicular growth secondary to stimulation by
7 @0 A7 ~2 a8 h% ygonadotropins.1,3
5 P7 @/ O8 |2 j* [) n6 pGonadotropin-independent peripheral preco-0 O0 P2 G; {: v8 H% \
cious puberty in boys also results from inappropriate. J- i1 C; X9 v/ T7 J4 o
androgenic stimulation from either endogenous or
, z. o4 I+ |" l3 w X( _8 q' C$ vexogenous sources, nonpituitary gonadotropin stim-+ u* ~, G1 I2 \; ?7 O* h$ ]9 p: v5 P, y
ulation, and rare activating mutations.3 Virilizing
! d; _3 j0 v' g( @+ vcongenital adrenal hyperplasia producing excessive
: n7 j& c) J* X& m6 e/ u6 p# dadrenal androgens is a common cause of precocious
+ Y Y& y/ f0 f, d* \$ R/ epuberty in boys.3,40 Y' {, Y0 ~2 Y, K- ^
The most common form of congenital adrenal) E# b% A& M+ R. R0 M' E( [0 x
hyperplasia is the 21-hydroxylase enzyme deficiency.
7 U7 c& B9 R( n5 j7 g+ |The 11-β hydroxylase deficiency may also result in
6 c* u5 q: _ G/ u5 V$ y }. Gexcessive adrenal androgen production, and rarely,5 {0 g. `- a: X, W& G5 u
an adrenal tumor may also cause adrenal androgen
# L4 L9 v9 z4 v) oexcess.1,3
0 @ v/ p2 a w! k* Gat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from4 P6 Z! s3 n H0 m! k( F2 M0 W/ G4 o
542 Clinical Pediatrics / Vol. 46, No. 6, July 2007- B+ S7 Y8 e! j& {, f' {* u
A unique entity of male-limited gonadotropin- l8 v& l3 x) n7 o
independent precocious puberty, which is also known! c0 e5 c W; V& a
as testotoxicosis, may cause precocious puberty at a
8 G) `4 m9 x: K$ u+ @0 H9 y& S# Y2 Zvery young age. The physical findings in these boys+ n1 C" H, {; j2 m
with this disorder are full pubertal development,
, a) H$ M/ a- U$ h( kincluding bilateral testicular growth, similar to boys z1 M/ H F' r( ^. r3 X K
with CPP. The gonadotropin levels in this disorder
% u, O9 U5 U& f+ Gare suppressed to prepubertal levels and do not show' H4 i9 i" Z3 U
pubertal response of gonadotropin after gonadotropin-
, L2 r+ `6 W" m$ wreleasing hormone stimulation. This is a sex-linked5 j# X" d& }5 C0 g* G
autosomal dominant disorder that affects only% S: [7 J9 T& u9 j
males; therefore, other male members of the family
% z* g- i* w# W. E) pmay have similar precocious puberty.31 Q2 @4 u, d; T$ W7 g
In our patient, physical examination was incon-5 n, a( D/ ^! C( q: H2 t
sistent with true precocious puberty since his testi-
9 G; A$ l( {( z5 o+ A3 b( Gcles were prepubertal in size. However, testotoxicosis
; l7 _; C' _ D3 v5 H4 X' W8 {was in the differential diagnosis because his father9 G D% D$ a4 ?
started puberty somewhat early, and occasionally,
1 V7 [8 \+ Z0 l" g' m" H7 v" Htesticular enlargement is not that evident in the
t: l! u6 X' F7 @; Y$ Pbeginning of this process.1 In the absence of a neg-
0 ]4 f) s. L. Z$ A$ Iative initial history of androgen exposure, our
7 _+ O Y) i6 l+ [! mbiggest concern was virilizing adrenal hyperplasia," h& U1 ~- q3 E5 N* Z
either 21-hydroxylase deficiency or 11-β hydroxylase
9 F; o+ S# g$ x# a& |3 s: o8 vdeficiency. Those diagnoses were excluded by find-; O) f; i; z1 `7 |2 l$ O( g
ing the normal level of adrenal steroids.
9 C/ Y$ O d3 LThe diagnosis of exogenous androgens was strongly" _6 f4 z2 Q" u: K$ T; e: n, D
suspected in a follow-up visit after 4 months because
' s, `, K; c6 y9 l8 p$ W- sthe physical examination revealed the complete disap-
7 F* T: c U" Z c% c) Xpearance of pubic hair, normal growth velocity, and% L6 q# d/ K# x) j
decreased erections. The father admitted using a testos-) o7 F2 V1 \4 f! q% e
terone gel, which he concealed at first visit. He was
3 |2 _1 G. m6 |: kusing it rather frequently, twice a day. The Physicians’' i8 ]7 M- p" E
Desk Reference, or package insert of this product, gel or
' \3 L5 X7 [% Ucream, cautions about dermal testosterone transfer to5 g0 }" M) }- x! C; l
unprotected females through direct skin exposure.
5 X: }3 A+ Y% r5 WSerum testosterone level was found to be 2 times the
+ A$ i3 c6 B9 L+ F; r% |6 tbaseline value in those females who were exposed to/ _/ k: l, P, T A1 _2 Q+ M
even 15 minutes of direct skin contact with their male
: q9 w' ?/ {# ^* s% ]; gpartners.6 However, when a shirt covered the applica-6 Q. _: V$ Q5 j. a2 @
tion site, this testosterone transfer was prevented.
: C, v' G4 s/ u2 rOur patient’s testosterone level was 60 ng/mL,
* k4 _$ A! N0 t$ jwhich was clearly high. Some studies suggest that: i2 T' @, ]9 f! b6 H# Q! R) o; C
dermal conversion of testosterone to dihydrotestos-
% ^8 C; T/ g A) x8 Rterone, which is a more potent metabolite, is more
( C* a( K. u2 ?1 gactive in young children exposed to testosterone
! Q b z( G- qexogenously7; however, we did not measure a dihy-
7 k7 m N. E& c( }6 d! t" F2 |) pdrotestosterone level in our patient. In addition to$ B) _- C: y- J% y W, k+ m: z( s
virilization, exposure to exogenous testosterone in, X8 M7 B ^& `5 M4 T
children results in an increase in growth velocity and
( t. l; W4 {- h' I1 z$ ladvanced bone age, as seen in our patient.
3 M( X8 h7 f! o$ c- D* E o9 iThe long-term effect of androgen exposure during% g/ y0 f( X* N8 y, Q
early childhood on pubertal development and final- W7 Y& N% i3 k: ]8 S C3 _
adult height are not fully known and always remain9 c R/ G# L& g; q
a concern. Children treated with short-term testos-
/ {( @ g7 G. v/ r Zterone injection or topical androgen may exhibit some
; h! b D/ u! F) V$ f# _acceleration of the skeletal maturation; however, after8 P0 ]/ w- m) G/ B+ A' d( O* o; a
cessation of treatment, the rate of bone maturation* V& w/ T5 ?8 N+ w; X2 V `# }. G
decelerates and gradually returns to normal.8,9
0 f; k' m7 x p& zThere are conflicting reports and controversy
" H$ O" {& \, ]- ]$ _! oover the effect of early androgen exposure on adult
: [) h6 }3 u+ k# g% openile length.10,11 Some reports suggest subnormal
# ^' P2 ^8 M0 c' }/ G8 \. nadult penile length, apparently because of downreg-
; l+ l% k8 E0 C6 Gulation of androgen receptor number.10,12 However,! o3 D/ r- q( J
Sutherland et al13 did not find a correlation between
6 {1 X% X! ]2 r$ m( W2 tchildhood testosterone exposure and reduced adult3 x9 g7 @6 Z) _7 j# t
penile length in clinical studies.
6 x6 M4 ?( _2 @2 KNonetheless, we do not believe our patient is
2 ~4 Q" Y6 U' Tgoing to experience any of the untoward effects from2 ^5 b0 {6 Y8 ^, X
testosterone exposure as mentioned earlier because
" V( N4 J/ i# F F. ?$ gthe exposure was not for a prolonged period of time.
+ X) o: a6 `- ]8 Q+ ^* hAlthough the bone age was advanced at the time of
m$ h7 v( S3 ]! Z- w s8 V% V0 @diagnosis, the child had a normal growth velocity at/ M3 H& ^+ `& |: m/ F
the follow-up visit. It is hoped that his final adult: g- g# g7 e: ^: o* X5 n: m5 v
height will not be affected.
1 |7 q b: z6 I- `2 D# ^Although rarely reported, the widespread avail-4 t+ m o4 {$ S2 W5 ~
ability of androgen products in our society may5 `9 y. J Z. ~3 I) Z
indeed cause more virilization in male or female
+ p3 F5 u7 N, |! g, b# P" Echildren than one would realize. Exposure to andro-
& X: d2 o8 [% n* l" vgen products must be considered and specific ques-
* O8 X" `. ~5 |% Z R! Z7 A3 X6 itioning about the use of a testosterone product or
) M7 K! X3 T; Egel should be asked of the family members during
$ `$ j& h! K( Vthe evaluation of any children who present with vir-0 E7 g5 e- N1 \' X5 _! ?- l, I! K
ilization or peripheral precocious puberty. The diag- B. [ g; x( |$ n" j5 G) I2 @
nosis can be established by just a few tests and by
1 s/ z% J" l/ H& j& f0 u" W, Uappropriate history. The inability to obtain such a5 ^( z4 L3 s/ H( Q( Z7 g5 o8 @; \
history, or failure to ask the specific questions, may, P) i: Z5 @" f9 I1 s
result in extensive, unnecessary, and expensive0 E; e3 T3 s6 m# a- O( Q2 C& r
investigation. The primary care physician should be1 L w9 ~; l- x; |
aware of this fact, because most of these children
" y$ u% s& X6 ^ @# Ymay initially present in their practice. The Physicians’
$ c. H3 C; {1 j bDesk Reference and package insert should also put a! L( k5 J2 m z& P4 j
warning about the virilizing effect on a male or! G& o/ i+ J0 {2 F1 }
female child who might come in contact with some-. @ n! o/ l0 f$ c$ q1 C8 @( n
one using any of these products.
8 H* Q3 F f9 k. s, d" R0 l, m" @References5 T8 _3 z0 l- j% j" J4 ^
1. Styne DM. The testes: disorder of sexual differentiation
& h, C, H9 O( Z0 jand puberty in the male. In: Sperling MA, ed. Pediatric i, G, L4 o: M
Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
; \% d' X0 y# @( q7 B: ]0 T C7 k3 G2002: 565-628.
( ]3 } Z) x- I4 D( o+ D2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious, {; \: i- O# @, U8 y
puberty in children with tumours of the suprasellar pineal |
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