Histology of 378 appendicectomy specimens submitted to the Histopathology Department of Muhimbili Medical Centre from its surgical wards over a 10 year period (1985 to 1994) were reviewed. There were 185 cases (48.9 pc) of acute appendicitis, 101 cases (26.7 pc) of chronic appendicitis, 74 (19.6 pc) normal appendices and 13 cases (3.5 pc) schistosomal appendicitis. There were two cases of tuberculous appendicitis and two cases of mucocele of the appendix. Apart from the high frequency of chronic appendicitis the histological findings in this study compare well with findings reported from other studies.