A case of follicular lymphoma presenting with a mass located mainly in the pancreatic-bile duct-duodenal space and obstructive jaundice

Key Points

• To describe a case of follicular lymphoma presenting with obstructive jaundice due to mass involvement in the pancreatic-bile duct-duodenal region.
• Patient presented with obstructive jaundice and underwent enhanced CT imaging showing a 2 cm tumor.
• Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) was performed, but histological diagnosis was not initially obtained.
• Pylorus-preserving pancreaticoduodenectomy was performed leading to definitive diagnosis post-surgery.
• Histological examination revealed follicular lymphoma with transformation to diffuse large B-cell lymphoma.
• Tumor compressed the bile duct, resulting in obstructive jaundice.
• Lymphoma was localized between the duodenum and pancreatic tissue and involved bile duct and pancreatic tissue.