Kaposiform Hemangioendothelioma

**Semantic type:** Neoplastic Process

**Definition:** An intermediate, locally aggressive blood vessel neoplasm characterized by the presence of spindle endothelial cells, and formation of capillary-sized and slit-like vascular channels. It is often associated with hemorrhage and hemosiderin deposition.

**Synonyms:** - KHE - Kaposiform hemangioendothelioma