In prior studies, findings have suggested the possibility that aneurysmal cyst is actually a result of hemorrhagic degradative events occurring in patients with other lesions including giant cell tumor, hemangioma, chondroblastoma, osteoblastoma, non-ossifying fibroma, fibrous dysplasia, chondromyxoid fibroma, eosinophilic granuloma, and other tumors [ 6, 7 ].
Source: wiktionary