Multinucleate Cell Angiohistiocytoma

**Semantic type:** Neoplastic Process

**Definition:** A rare benign cutaneous mesenchymal neoplasm characterized by the presence of multinucleated cells, dermal fibrosis that is often parallel to the epidermis, and increased number of stromal blood vessels with thickened walls and dilated lumens. It manifests with solitary or multiple papules and nodules.