Decoding the diagnostic dilemma: Peripheral T‑cell lymphoma presenting as acute pancreatitis: A case report.

Peripheral T cell lymphoma (PTCL) is a rare form of non-Hodgkin lymphoma characterized by the origin of mature T-cells. PTCL demonstrates atypical clinical features and involves both nodal and extra-nodal sites. The diagnosis and treatment of PTCL can prove to be challenging, as it is often detected at advanced stages and is resistant to conventional chemotherapy treatments. The present report describes a 55-year-old male patient who presented with acute pancreatitis, and imaging suggested a soft tissue mass in the pancreatic head indicating pancreatic adenocarcinoma. Further investigation through ultrasound-guided biopsy led to the diagnosis of pancreatic PTCL not otherwise specified.