Undifferentiated carcinoma with osteoclast-like giant cells of pancreas

Definition

A rare type of pancreatic ductal adenocarcinoma characterized by composition of non-neoplastic osteoclast-like multinucleated giant cells, a mononuclear histiocytic component, and the neoplastic cells, which vary from spindle-shaped to epithelioid and can be very large and pleomorphic. Clinical features of pancreatic ductal adenocarcinoma include abdominal pain, nausea, weight loss, jaundice, and new-onset diabetes.