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"A clinical observation was made on the renal tumors of the in-patients in the Department of Urology, Seoul National University Hospital during the period October, 1965 through September, 1967 and the following results were obtained. 1. During the period, of 300 cases (227 males and 73 females) hospitalized, 10 cases had tumors of the kidneys giving a rate of 3.3%. Among the 10 cases 7 cases were male and 3 cases were female with ratio of 2.3 to 1. 2. Age distribution ranged from 2 years to 67 years with average of 40 years. Of 10 cases, 5 cases or 50% were seen by us at the ages of 50 years or more. 3. Tumors involved right and left kidneys equally. 4. The most common complaints on admission were hematuria and pain followed by palpable mass. 5. Excretory urogram was taken in all patients. In 5 cases the diseased kidney was not visualized. Remaining 5 cases gave compression deformities compatible with renal tumor. 6. All patients underwent nephrectomy and two of them had postoperative x-ray irradiation. 7. Renal cell carcinoma is observed in 7 cases, Wilms` tumor in 2 cases and leiomyofibrolipoangioma, so called hamartoma, in 1 case."
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