Long-term survival after pancreaticoduodenectomy for duodenal papillary adenocarcinoma in a patient with acquired immunodeficiency syndrome: A case report and review of literature

Figure 1 Imaging features of a duodenal papillary tumor. A and B: Axial contrast-enhanced computed tomography shows an enhancing nodular lesion (1.80 cm × 1.80 cm) in the duodenal papilla region; C and D: Note the dilated biliary and pancreatic ducts (common hepatic duct: 1.50 cm) and the double duct sign; E and F: Gastroscopy reveals a tumor (1.50 cm × 1.50 cm) in the descending duodenum obscuring the nipple opening. The discrepancy between endoscopic (1.50 cm × 1.50 cm) and pathological (1.00 cm × 1.00 cm × 0.50 cm) tumor dimensions may be attributed to tissue shrinkage during formalin fixation, partial tissue loss from preoperative biopsy, and intraoperative manipulation.