Temporal bone giant-cell tumor with secondary aneurysmal bone cyst: A rare case report and review of literature

Abstract

Giant-cell tumor (GCT) and aneurysmal bone cyst (ABC) are locally aggressive and benign in nature. They usually occur in the extremities of the long bones. Involvement of the skull base or cranial vault is very rare. Both are different in pathologically and cytogenetically. GCT can be associated with ABC, which are likely reactive in nature. To the best of our knowledge, only two cases are reported coexisting GCT with ABC in the cranial vault. Here, we report the third case of coexisting GCT secondary ABC of the temporal bone and the first case of temporal bone coexisting GCT with ABC.