大腸癌隣接臓器合併切除例の検討

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  • ANALYSIS OF COLORECTAL CANCER WITH COMBINED RESECTION OF ADJACENT ORGANS

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Of 499 cases of colorectal cancer operated on during a 16-year period, 108 (21.6%) had macroscopic invasion into the surrounding organs. Seventy-one of the 108 patients underwent combined resection of colorectal tumor and the adjacent organs, resulted in curative resection in 54 patients. The invasion was predominantly seen in the small intestine and urine bladder in colon cancers, while in the bladder and uterus in rectal cancers. However, only 22 (40.7%) of them were verified to have the tumor invasion microscopically. In a postoperative follow-up study, 12 cases had recurrence of cancer and 4 out of the 12 had local recurrence. The five-year survival rates were as relatively high as 82.9% in colon cancers and 72.2% in rectal cancers (by Kaplan-Meier method). No significant difference in prognosis was found between patients with direct histological invasion and those without such invasion. From these results, suggest that combined resection of the surrounding organs is recommended for better prognosis in colorectal cancers, if those are suspected to have the direct invasion.

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