Postoperative radiotherapy for ganglioglioma; report of three cases and review of the literature.

Gangliogliomas are rare tumors of the central nervous system. The definite role of postoperative radiotherapy has not been established. In studying three cases who underwent radiotherapy after subtotal resection, we evaluated the clinical, pathological, radiological features with follow-up of mean 8.1 years. All of three patients were male, and mean age was 22.3 years. All of the cases have temporal lobe lesions and, except for one, they all have seizures. Radiotherapy was given to all patients after surgery. Parallely opposed local fields were used. A total of 54 Gy in 5.5 weeks was given to the mid-plane using a Co-60 tele-therapy device. No recurrence, no new symptoms, and no new neurological deficiency were detected during follow-up.