[Recurrences of adenomas of the large intestine]

A retrospective mathematic-statistical evaluation of cases of adenoma of the large intestine--asymptomatic (group 1) or bleeding one (group 2)--showed the frequency and pattern of recurrence and malignant transformation following electrocoagulation to be identical in both groups. Such change in the histologic type as transformation of tubular polyps to a villous pattern proved to be an important factor of risk for relapse and neoplastic growth of solitary adenoma of the large intestine. Villous adenoma showed the highest rate of recurrence and malignant transformation. It is considered to be obligatory precancer.