Follow-up study of patients with benign mucosal polyps discovered by proctosigmoidoscopy

In a long-term follow-up study, individuals with colorectal polyps had a significantly higher incidence of the development of colorectal carcinomas than the unaffected population. The vast majority of these carcinomas were not within the reach of the sigmoidoscope. Individuals who have had colorectal polyps should have careful follow-up studies for the rest of their lives.