Isolated hilar mass mimicking cholangiocarcinoma as a rare metastatic manifestation of recurrent colorectal cancer: A case report

A metastatic adenocarcinoma of the colon that presents as a hilar mass and mimics cholangiocarcinoma is very rare. The metachronous nature along with the isolated metastasis involving the hilum of the liver makes this case unique. Diagnosis can be challenging and needs a tissue specimen along with immunostaining to achieve an accurate diagnosis and provide appropriate treatment. Biliary decompression is performed either endoscopically or percutaneously and is part of the multidisciplinary approach involving medical and surgical oncology teams.