下顎骨に発生した動脈瘤性骨嚢胞の1例

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The aneurysmal bone cyst was first described as a pathologic entity by Jaffe and Lichtenstein in 1942. This disease is known as a non-neoplastic bone lesion, forming a cystic cavity filled with nonendotheliallined space containig blood, but the etiology remains unknown. A 13-year-old boy was referred to our hospital for treatment of mandibular fracture caused by an accident. xray showed a fracture line at the mental region of the mandible and defined multilocular cyst-like radiolucency on the left side of the mandible.<BR>From CAG, no aneurysm was revealed, but capillaries were seen corresponding to the cyst-like shady region. Under general anesthesia, the left side of the mandible was exposed through an intraoral approach and curretted. The lesion was a multilocular cavity containing blood and coagulation.<BR>Histologically, the cavity was lined with a thin fibrous connective tissue stroma filled with numerous capillaries and blood. In some areas, new bone formation and hemorrhage were seen. The lesion was diagnosed as an aneurysmal bone cyst.
社団法人日本口腔外科学会の論文