2022 Volume 65 Issue 4 Pages 138-143
Giant Cell Reparative Granulomas (GCRG) often occur in the maxilla and mandible, and there have been few reports of their occurrence in the temporal bone. We experienced a case of complete resection after surgical treatment for GCRG originating from the temporal bone. The case was a 47-year-old female who was referred to our department with the complaints of headache and left ear pain. CT showed a mass lesion on the left skull that was suspected as extending to the tympanic chamber, middle skull base, and temporomandibular joint fossa. A biopsy from the middle ear revealed a giant cell granuloma. Lateral temporal bone resection, middle skull base combined resection, and temporomandibular joint combined resection were performed, and the tumor was completely removed. The dura mater defect site was reconstructed with the temporalis fascia, and the temporomandibular joint/zygomatic bone resection site was reconstructed with a serratus anterior flap with ribs. The patient received a good diet with a blender after the operation, and was discharged from the hospital about 2 weeks after the operation. Conductive hearing loss due to closure of the ear canal became apparent, but facial nerve and inner ear functions were preserved. GCRG has a high recurrence rate when total removal is difficult, and complete removal is desirable whenever possible. In this case, we report that a favorable postoperative course was obtained by performing total tumor resection jointly with neurosurgery and formative surgery.
