脈瘤性骨嚢胞に対するRI-angiographyの有用性

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This paper described an usefullness of RI-angiography in diagnosis of aneurysmal bone cyst, an extremely rare nonodontgenic disease occurring in the jaws. A 14-year-old boy visited our clinic, complaing of swelling of the left side of mandible. Intraoral examination revealed buccal and lingual bone expansion of the lower left molar region. Radiographs revealed a multilocular radiolucent area on the mandible left side. A clinical diagnosis of ameloblastoma was suspected under these findings. We experienced pulsatory bleeding from the lesion during biopsy.<BR>We suspected an angiomatous lesion and performed ultrasonic examination, CT scaning and angiography. The results revealed that there was little possibility of angiomatous lesion, so that we again tried a biopsy and the specimen indicated a diagnosis of cavernous hemangioma. Furthermore we performed RI-angiography to asses the vascularity of the lesion, but the pattern of cavernous hemangioma was not demonstrated. Aneurysmal bone cyst was strongly suspected by RI-angiographic in addition to clinical, roentographic and angiographic findings. Under general anesthesia, all cystic tissue was removed from the cavity by careful curettage intraorally. Histopathologically, the lesion consisted of a fibrous connective tissue stroma containing numerous capillaries. In some region, osteoid formations were seen and a few giant cells were present.<BR>The lesion was finally diagnosed as aneurysmal bone cyst. The agreement with the RIangiography finding and the histopathological diagnosis suggested that RI-angiography examination was effective for diagnosis of aneurysmal bone cyst.

脈瘤性骨嚢胞に対するRI-angiographyの有用性

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