Figure 8.

Typical computed tomography (CT) images showing non-atrophic parenchyma in a 55-year-old man with benign main pancreatic duct (MPD) stenosis. Localized MPD stenosis without tumor lesion was detected in the pancreatic body in CT after the recurrence of acute pancreatitis. (A); Typical CT images showing non-atrophic parenchyma. Non-atrophic parenchyma in a patient with chronic pancreatitis diagnosed in the resected specimen. CT image shows no evidence of pancreatic parenchymal atrophy regardless of the presence of isolated MPD stenosis (green arrow). (B); Hematoxylin and eosin (H&E)-stained resected specimen in the section of MPD stenosis area. Histopathological examination showed that acinar cell architecture was maintained (H&E stain, ×0.5 magnification). (C); Slight fibrosis and focal fatty change without parenchymal atrophy were observed in the pancreatic tissues surrounding stenosis MPD (H&E stain, ×4 magnification).