Fig. 5
From: A case of duodenal hemorrhage due to arteriovenous malformation around a serous cystic neoplasm
a The walls of the abnormal vessels demonstrated both thin and thick walls around the pancreatic SCN (arrows). The border between duodenum and pancreas (arrowheads) (HE). b Expansion of the square area of (a). The walls of the abnormal vessels demonstrated heterogeneous thickness (arrowheads). c The results of Elastica van Gieson staining in the abnormal vasculature. d Expansion of the square area of (c). The elastic fibers of the abnormal vessels demonstrated heterogeneous thickness (arrowheads)