Synchronous primary adenocarcinomas of the colon and rectum

Dis Colon Rectum. Jan-Feb 1978;21(1):20-2. doi: 10.1007/BF02586540.


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.

MeSH terms

  • Adenocarcinoma / epidemiology*
  • Adult
  • Aged
  • Colonic Neoplasms / complications
  • Colonic Neoplasms / epidemiology*
  • Female
  • Humans
  • Male
  • Middle Aged
  • Neoplasms, Multiple Primary / epidemiology*
  • Rectal Neoplasms / complications
  • Rectal Neoplasms / epidemiology*