Site distribution of carcinoma of the large intestine

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Abstract
The site distribution of large-bowel adenocarcinomas was studied in a retrospective study compromising 600 patients. These patients were divided into two groups according to the year of their operation; group A included patients operated upon between 1978 and 1982, and group B patients were operated upon between 1983 and 1987. Comparing these two five-year periods, a statistically significant increase in the incidence of right colon tumors was noted (P less than 0.05). There was no difference in the distribution pattern of the carcinomas according to sex or age between the two groups (P less than 0.1). The shift to the right of large-bowel neoplasms may indicate the need for an alteration of the diagnostic procedures concerning this disease, with more emphasis given to total colonoscopy and or double-contrast barium enema.