下顎歯槽部に発生した悪性血管周皮腫の1例

概要

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A 46-year-old woman referred for swelling on median part of the mandible. She had become aware of the lesion 2 years ago as a bean-size swelling on her lingual gingiva. She had visited an otorhinologist and had got the enucleation. Recurrence of the lesion had occurred after 1 year and it had enlarged to an egg-size within 9 months. Clinical examination disclosed a moderately firm swelling extending laterrally 4 from to 3 on both labial and lig lingual sides. X-ray exam showed diffused absorption of the bone. Under histopathological diagnosis of emangiopericytoma, the tumor was excised with the mandible from 1 to IT rectangularly. Histopathological exam of the excised specimen revealed invasion of tumor cells to the mandibular bone marrow, which suggests Malignant hemangiopericytoma. 40 Gy of total dose irradiation after operation. At the 4 years' exam, there was no evidence of recurrence or metastasis.