Fig. 4From: A case of duodenal hemorrhage due to arteriovenous malformation around a serous cystic neoplasma The pancreatic head lesion had innumerable microcysts (arrowheads). b Expansion of the square area of (a). The border between SCN and duodenum (arrowheads). The abnormal vessels in the duodenal mucosa (arrows) (HE). c Expansion of the square area of (b). The cyst locules lined by epithelial cells with round central nuclei (HE)Back to article page