[Some new aspects on appendicitis (author's transl)].

50% of all perforations of the vermiform appendix happen 12 hours or less after onset of the disease. Due to the fact that appendectomy is often done too late that the total mortality rate is still to high. This refers especially to infants and elderly people. Prae-, intra- and postoperative mistakes are analysed. Bacteriologically there are some new aspects concerning anaerobic infections with Bacteroides and Yersinia enterocolitica.