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[An aged case of hereditary xanthinuria with xanthine urinary calculi].
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A
74
-
year
-old
female
with
hereditary
xanthinuria
and
xanthine
stones
is
reported
.
She
has
a
family
history
of
consanguineous
parents
and
a
past
history
of
right
side
nephrectomy
due
to
a
xanthine
renal
stone
and
vesicolithotomy
of
3
bladder
stones
approximately
5
X
4
X
4
cm
in
size
at
the
age
of
58
and
71
,
respectively
.
Her
young
brother
exhibited
a
slightly
elevated
urinary
excretion
of
oxypurines
.
Laboratory
examination
showed
a
low
serum
level
(
0
.
3
mg
/
dl
)
and
urinary
excretion
(
1
.
56
mg
/
day
)
of
uric
acid
,
and
high
plasma
and
urine
levels
of
oxypurines
.
No
xanthine
oxidase
activity
was
detectably
in
duodenal
mucosa
by
biopsy
specimen
obtained
by
duodenofiberscopy
.
Now
she
has
another
stone
approximately
5
X
4
X
4
cm
in
her
bladder
.
There
have
been
are
few
elderly
cases
of
hereditary
xanthinuria
with
recurrent
giant
urolithiasis
.
