Primary malignant fibrous histiocytoma of the pancreas.

A patient with a large tumor of the head and body of the pancreas had a Whipple procedure performed after the intraoperative diagnosis of "mesenchymal tumor" was made. The final histopathologic diagnosis was malignant fibrous histiocytoma arising in the pancreas. The patient died of postoperative complications, and no metastatic disease was found at autopsy. This is the first detailed description of a primary pancreatic malignant fibrous histiocytoma.