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Journal of Korean Neurosurgical Society 1981;10(2): 533-542.
Statistical Analysis of Intracranial Tumors in Korea.
Dong Gyu Kim, Bo Sung Sim
Department of Neurosurgery, College of Medicine, Seoul National University, Seoul, Korea.
A statistical analysis was performed with 623 intracranial tumor cases of which diagnoses were confirmed at the Department of Neurosurgery of Seoul National University Hospital from Sep. 1957 to Apr. 1981. The authors classified the intracranial tumors according to Russell and Rubinstein's classification. Epidermiological factors were analysed in general, and especially for the changes after CT introduction. The results were as follows: 1. Intracranial tumors were found most frequently in middle age group(20.9%), and the ratio of male to female was 1.8:1. 2. Among the intracranial tumors, gliomas were found most frequently(20.9%), and followed by granulomatous lesions(15.7%), pituitary adenomas(14.3%), Meningiomas(10.9%), vascular tumors(10.0%), schwannomas(5.1%). 3. The incidence of gliomas was less than that of otjer countries, especially glioblastoma multiforme. Pituitary adenomas occupied 14.3% of all intracranial tumors and as a single entity these were the highest incidence. Granulomatous lesions occupied 15.7% of all intracranial tumors. 4. Intracranial tumors occurred more frequently in supratentorial region. The most frequent location was wellar and parasellar regions(19.9%), and followed by frontal(17.2%), cerebellar(14.4%), parietal(14.0%), temporal region(9.5%). 5. Gliomas are the most frequent tumors irrespective of age group and in children then comes granulomatous lesions, medulloblastomas, vascular tumors and in adults then comes pituitary adenomas, granulomatous lesions, meningiomas in that order. 6. Since the advent of CT scan, the detection rate of intracranial tumors was increased, but there was no specific change in proportion of tumors.
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