Fig. 5

Gross specimen image and optical microscopy image of intravascular papillary endothelial hyperplasia shows gray–red tissue of 12.0 cm × 10.0 cm × 6.5 cm in size. The surface is smooth, and the capsule is intact (A). The section is grayish red and brown, and some areas are gray and white (B). The vascular endothelial cells are fusiform and form multiple papillary processes (C). The lesion is full of anastomosed fissure vascular lumen and scattered organized thrombus (D)