[Results of a screening for colorectal carcinoma.--A field-trial in the town Mölln (author's transl)].

3627 residents of the city of Mölln aged over 40 years and 1116 guests in this town returned a letter with test material to detect occult blood in faeces and a special questionnaire. The rate of this population who participated in this field study were 42,1% for men and 42,0% for women. The hemo-FEC-test were positive in 176 persons. Signs of colorectal diseases were revealed in 645 individuals by the questionnaire. However, the diagnostic procedures which are necessary consequences were performed in 122 respectively 143 persons only. There were 15 carcinomas and 95 adenomas in 49 patients. These figures correspond to 34,4% of the gastroenterological examined and hemo-FEC-positives, and 4,9% of the individuals with signs in the questionnaire, or 0,89% of all participants.