Synchronous primary adenocarcinomas of the colon and rectum.
In a series of 1,002 cases of primary colorectal adenocarcinomas diagnosed during a ten-year period there were 62 (6.2%) patients who had two or more primary colorectal adenocarcinomas. Most of the tumors were more than 5 cm away from each other: 27 carcinomas were separated by 6-10 cm, 16 were separated by 11-20 cm, and 12 were separated by more than 20 cm. It is concluded that the incidence of synchronous carcinomas of the colon is sufficiently high to warrant a search by both surgeon and endoscopist for additional tumors some distance from the initial lesion.
D000230:Adenocarcinoma / Q000453:epidemiology*; D000328:Adult; D000368:Aged; D003110:Colonic Neoplasms / Q000150:complications / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000453:epidemiology*; D012004:Rectal Neoplasms / Q000150:complications / Q000453:epidemiology*