[Multiple primary malignant neoplasms of the large intestine].

Of the 3182 patients with malignant tumors of the large intestine, in 140 (4.4%), the primary multiple malignant neoplasms were revealed: in 59 (42.1%) of them--the synchronous, in 81 (57.9%)--the metachronous ones. Surgical treatment was performed in 137 (97.9%) patients, including the radical treatment--115 (83.9%). The postoperative lethality was 7.3%. 75.3% of the patients are alive for five years, 21.3%--for ten years.