Biliary hamartomas are rare, benign malformations of the biliary tract
, usually discovered at autopsy or erroneously confused with metastasi
s or other cystic hepatic lesions. For these reasons it is necessary t
o consider them in the differential diagnosis. The authors describe th
ree cases of biliary hamartoma in which the definitive diagnosis was o
btained only with the use of histologic examination which represents t
he only means available that can draw conclusions about the real natur
e of this lesion.