大腸ｐｍ癌の臨床病理学的検討

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  • Clinicopathological Studies on pm-colorectal Carcinoma.

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For 10 years from 1982 to 1991, 30 cases of colorectal camcer, infiltrating to the proper muscle layer, were examined and evaluated on the basis of clicopathological findings.<BR>Pm colorectal carcinoma was classified into two groups according to the depth of invasion into the circular muscle layer (C type) and longitudinal muscle layer (L type).<BR>Most of the pm colorectal carcinomas were located in the rectum (66.7 %). The incidence of pm colorectal carcinoma, according to macroscopic classification, showed that the elevated type had a higher percentage (66.7 %) than the ulcerative type (33.3 %). As the carcinoma invaded deeper into the proper muscle layer the incidence of vascular invasion and lymph node metastasis tended to increase. Vascular metastasis of L type (92.9 %) was higher than that that of C type (43.8 %). Lymph node metastasis of L type was 35.7 % and C type was 31.3%.<BR>The recurrence of the pm colorectal carcinoma was seen in 4 cases.<BR>Two cases were locale recurrences, one was lung metastasis, one was multiple bone metastasis.

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