[Endometriosis of the colon (author's transl)]

This report is concerned with a twenty-five year old female with endometriosis of the recto-sigmoid-colon. Due to medication intolerance a trial with hormone therapy had to be discontinued. After several years of illness an ileus and ureter-stenosis developed and several operations were necessary to alleviate these conditions. A survey of the frequency and localization of extragenital endometriosis followed by a discussion of pathogenesis, clinic and alternatives of therapy.