Discussion:
H epatic peribiliary cysts are reported to occur due to
obstruction of the outflow tract of the peribiliary glands caused by
alcohol, inflammation, or bile duct blood flow disorders [1]. A
review of 1,000 autopsy reports showed that hepatic peribiliary cysts
predominantly affect men and have a prevalence of 5% in normal liver
[6]. As the peribiliary glands develop along the left branch of the
intrahepatic bile duct, serous cysts are characteristically present in
the left liver lobe near the porta hepatis and around the large bile
ducts in a beaded pattern [6]. Therefore, to diagnose a hepatic
peribiliary cyst, it is important to demonstrate the absence of bile
duct traffic to the cysts by endoscopic retrograde
cholangiopancreatography or drip infusion cholecystocholangiography CT,
and to rule out malignancy by cytological diagnosis.
Histopathologically, hepatic peribiliary cysts are lined by a single
layer of columnar epithelium without atypia; however, there is a report
of hepatobiliary cystadenoma and cystadenocarcinoma in the peribiliary
gland being mistakenly followed up as hepatic peribiliary cysts