Excised colorectal polyps may contain unexpected malignancy. Once diagnosed histologically, further management is controversial, and little evidence exists to help in the choice between salvage bowel resection, local resection, systemic oncological treatment or watchful waiting. Choice of treatment must take patient-related factors as age and co-morbidity into consideration. Clinicians often face a dilemma concerning further treatment because of the scarce evidence. We want to establish a suggestion of a tailor-made treatment of malignant colorectal polyps based on the given evidence.