Primary pancreatic diffuse large B-cell lymphoma, activated B-cell subtype, diagnosed by endoscopic ultrasound-guided fine needle aspiration-A case report and review of the literature.

Although primary pancreatic lymphoma is a rare cause of pancreatic mass, this diagnosis should be considered during work-up. Furthermore, when adequate diagnostic material is available from biopsy, complete workup of the lymphoma, including not only type but also subtype when applicable, should be performed.