Intravascular papillary endothelial hyperplasia: a clinicopathologic study of 91 cases

Ninety-one cases of intravascular papillary endothelial hyperplasia were studied clinically and histologically. This peculiar benign process, occasionally resembling hemangiosarcoma, was subgrouped in the following categories: a pure form that occurs within a dialted vascular space (30 cases), a mix