Cholangiocarcinomas do not make bile, but the cells do make mucin, and they can be almost impossible to distinguish from metastatic adenocarcinoma on biopsy or fine needle aspirate.

Postoperative pathological diagnosis revealed 15 neurinomas, 5 spinal meningiomas and 1 metastatic adenocarcinoma.

Here are liver metastases from an adenocarcinoma primary in the colon, one of the most common primary sites for metastatic adenocarcinoma to the liver.