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[Benign recurrent intrahepatic cholestasis type-II--a rare cause of direct hyperbilirubinemia exacerbations with hepatic fibrosis].
[benign recurrent intrahepatic cholestasis]
Direct
hyperbilirubinemia
,
may
result
from
a
variety
of
pathologies
,
including
structural
obstructions
with
biliary
tract
occlusions
(
as
in
cholelithiasis
)
,
infections
(
e
.
g
.
hepatitis
)
and
genetic
disorders
(
Rotor
's
and
Dubin-
Johnson
's
syndrome
)
.
One
of
the
less
common
and
probably
more
frequently
underdiagnosed
causes
is
benign
recurrent
intrahepatic
cholestasis
(
BRIC
)
.
First
described
in
1959
,
BRIC
was
further
classified
into
two
subgroups
which
differ
in
their
pathogenesis
and
clinical
manifestation
.
Both
BRIC
types
originate
from
impaired
function
bile
salt
excretion
from
hepatocytes
to
the
canaliculi
which
is
mediated
by
the
bile
salt
export
pump
(
BSEP
)
which
is
located
on
the
hepatyocyte
membrane
,
unevenly
distributed
within
the
membrane
lipid
bilayer
.
In
BRIC
type
-
I
,
a
mutation
impairs
the
asymmetrical
distribution
of
BSEP
.
In
BRIC
type
-
II
,
a
mutation
occurs
directly
damaging
the
BSEP
.
Apart
from
cholestasis
,
clinical
manifestations
of
BRIC
type
-
I
include
extra
-
hepatic
symptoms
such
as
watery
diarrhea
,
pancreatitis
and
hearing
impairment
.
Patients
with
BRIC
type
-
II
present
mainly
with
hepatobiliary
disease
such
as
colelithiasis
.
In
the
past
,
BRIC
was
conventionally
considered
to
result
in
no
more
than
canalicular
cholestasis
,
however
several
reports
have
associated
BRIC
with
fibrosis
and
porto
-portal
septa
formation
.
Disease
course
may
last
between
weeks
and
months
,
more
common
in
females
,
at
any
age
,
and
usually
resolves
spontaneously
,
although
chronic
liver
disease
has
also
been
described
.
Treatment
modalities
range
from
expectant
management
,
medication
(
cholestyramine
,
ursolit
)
or
even
surgery
(
biliary
bypass
/
liver
transplantation
)
.
This
report
describes
a
patient
with
BRIC
type
-
II
and
reviews
the
relevant
literature
.
Diseases
Validation
Diseases presenting
"pancreatitis"
symptom
benign recurrent intrahepatic cholestasis
carcinoma of the gallbladder
cholangiocarcinoma
cystinuria
dracunculiasis
familial hypocalciuric hypercalcemia
scrub typhus
systemic capillary leak syndrome
This symptom has already been validated