A Pancreatic Collision Tumor Comprising Mantle Cell Lymphoma and Adenocarcinoma: A Case Report and Literature Review

Abstract

A collision tumor is a rare clinical condition where two different tumors occur synchronically within a lesion. Pancreatic collision tumors with mantle cell lymphoma (MCL) are extremely rare and have only been reported in one case to date. We herein report an elderly patient with MCL and adenocarcinoma of the pancreas with Ann Arbor stage IV and Union for International Cancer Control stage IIB, respectively. The patient received palliative therapy and died 23 months after the diagnosis. Further research and case studies are required to investigate whether or not MCL-derived cyclin D1 overexpression affects the occurrence/growth of adenocarcinomas.

Primary pancreatic lymphoma

“…Collision tumor of adenocarcinoma and lymphoma has been described. 12 , 13 The median overall survival was 53 months in patients with PPL. The 5-year survival rate of pancreatic MALT lymphoma has been reported to be as high as 89%; however, the prognosis is worse for high-grade lymphomas.…”