Scalp located hemangiopericytomas and review of the literature

Excerpt

Hemangiopericytoma is an uncommon mesenchymal vascular sarcoma which originates from the pericytes of Zimmermann and accounts for 1% of vasoformative tumors [1]. They are typically described as soft, painless, slow-growing masses which can be misdiagnosed as a benign entity [1, 2]. Hemangiopericytoma usually arises in the deep soft tissues of the lower extremities, axilla, pelvic fossa, retroperitoneum, and head and neck [3]. Cutaneous hemangiopericytomas are rare except for infantile hemangiopericytomas [4]. The occurrence of hemangiopericytoma in the skin has been reported in not more than 20 cases [5]. In this study, we present two cases of scalp located cutaneous hemangiopericytomas. …