Primary Pancreatic Lymphoma: An Uncommon Presentation in the Pancreatic Tail.

Primary pancreatic lymphoma is a rare form of pancreatic cancer that represents a diagnostic and therapeutic challenge due to its rarity and presentation mimicking pancreatic adenocarcinoma. Herein, we report a case of a 57-year-old Caucasian male who presented with left-sided chest pain, epigastric pain, and melena. Abdominal imaging was remarkable for a large, necrotic mass near the tail of the pancreas extending into the splenic hilum and left kidney. Biopsy of the mass confirmed lymphoma of B-cell origin. The patient was diagnosed with Stage IV disease and started on chemotherapy. This case combines an uncommon presentation of lymphoma with a rarely documented primary site in the tail of the pancreas.