下顎に発生した脈瘤性骨嚢胞の1例

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Case of aneurysmal bone cyst occuring in the left mandible of a 33-year-old female was reported. Although the lesion was incidentally found by a routine orthopantomography ten years ago, it gradually increased because it was not treated.<BR>The patient was referred to our clinic on July 13, 1988, complaining of swelling of the left mandible. On oral examination, bone expansion with partial bone resorption covered with normal mucosa was observed in the left lower canine to the second molar region. Roentogenographic examination revealed a multilocular radiolucent area showing scalloping without resorption or divergence of tooth roots. A puncture of the cystic lesion demonstrated the aspiration of arterial blood-like fluid. Angiographic finding showed a pooling of blood, coincident with radiolucent area, supplied from the inferior alveolar and facial arteries as main feeding vessels.<BR>After ligation of the left external carotid artery to avoid excessive bleeding, she was treated by segmental mandibulectomy reconstructed with iliac bone transplantation and titan reconstruction plate. Histologically, cavernous blood-filled cavities without endothelial lining and fibrous connective tissue containing young fibroblasts and many multinuclear giant cells were observed in the bone marrow spaces.<BR>At six months postoperation, no signs of recurrance and good fixation of the transplanted bone were seen.
社団法人日本口腔外科学会の論文