A Rare Case of Giant Cell Tumor of the Temporal Bone

In this report, we present a case of a rare giant cell tumor (GCT) in the temporal bone. GCT is a primary bone tumor normally found in the epiphysis of long bones; however, it can also occasionally be found in the skull. The patient is a 36-year-old female who presented with pressure and ear fullness in her right ear for the past several months, and a history of migraines for the past several years. She also reported muffled hearing that was temporarily relieved by “popping” her ears. When initial management did not alleviate symptoms, a CT scan was ordered and revealed an erosion of the squamous part of the temporal bone. This erosion was found to extend to the middle cranial fossa and middle ear space, abutting the head of the malleus. After initial biopsy of the mass, the differential diagnosis included giant cell reparative granuloma, brown tumor of hyperparathyroidism, giant cell tumor of bone, and aneurysmal bone cyst. Excision and curettage of the lesion was decided to be the best course of treatment. After curettage via a middle fossa approach, diagnosis was confirmed as a giant cell tumor. The patient reports that her recurrent migraines have resolved and that her hearing is back to normal again.

No conflict of interest has been declared by the author(s).