Intracranial meningioma.

Eighty-three patients with intracranial meningioma were retrospectively analyzed with regard to age, sex, anatomic location, mode of presentation and surgical outcome. The ages of the patients ranged from 11 to 77 years. Fifty-five (66%) were females and 28 (34%) were males. The peak incidence occurred between 40 and 49 years. The locations of the meningioma were as follows: 42.2% in the convexity, 15.7% in the parasagittal, 12.1% in the tuberculum sellae, 8.4% in the sphenoid ridge, and three cases with multiple lesions. Forty-two percent of our series were found to have hyperostosis of the skull bone. There were 7 cases with cyst formations found through computed tomography (CT). Histological classification showed 48.3% to be of meningothelimatous type, while 18.4% were of psammomatous type. One of the multiple meningiomas showed two different histological types. The degree of perifocal brain edema at CT scan was found to be related to the symptoms, the size of the tumor and seizure attack. Fifty-three out of 54 patients with episodes of seizures were found to have perifocal brain edema, whereas the histological features were less significant. Seventy-one tumors were treated by total resection and 16 tumors by subtotal resection. Follow-up study from 1 to 7 years showed the rate of recurrence in the total resection group to be 11.3%; in the subtotal resection group without radiation 42.9%, and in the subtotal resection group with radiation 66.7%. The over-all recurrence rate was 19.5% in our series.