title: A spindle cell hemangioendothelioma on the head resembling an arteriovenous malformation.
abstract: A spindle cell hemangioendothelioma is a relatively uncommon lesion, especially on the head and neck. Recurrence occurs after local excision of 50% to 60% of these lesions; therefore, it is important to recognize this unusual neoplasm and avoid misdiagnosis. Here, we report a rare case of a spindle cell hemangioendothelioma of the head. A 37-year-old woman presented with a soft subcutaneous mass, 2.5 cm in size, on her right occipital region. The mass pulsated strongly and a thrill was present. Magnetic resonance imaging showed that some dilated feeding arteries flowed into the mass and that a flow-void sign was present. The lesion looked like an arteriovenous malformation, and a marginal resection was performed. Histologically, there was a mix of cavernous vascular cavities and Kaposi sarcomalike spindle cell vascular zones, which is compatible with a spindle cell hemangioendothelioma.
authors: From the Department of Plastic Surgery, Asahi General Hospital, Asahi City, Chiba, Japan.
authors: Takuya
authors: T
authors: Higashino
authors: Rintaro
authors: R
authors: Hirai
mesh_terms: D000328:Adult; D001165:Arteriovenous Malformations / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D003937:Diagnosis, Differential; D005260:Female; D006258:Head and Neck Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D006390:Hemangioendothelioma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D009364:Neoplasm Recurrence, Local; D009778:Occipital Lobe; D012983:Soft Tissue Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery