Hepatobiliary System and Exocrine Pancreas

Adenocarcinoma of the gallbladder

The opened gallbladder contains a large, exophytic tumor that virtually fills the lumen. Malignant glandular structures are present within the gallbladder wall, which is fibrotic.

Cholangiocarcinoma

A, Massive neoplasm in the right lobe and multiple metastases throughout the liver. B, Tumor cells forming glandular structures surrounded by dense sclerotic stroma.