[Unusual diseases which may create the picture of acute appendicitis].

Five specialy interesting cases operated under the clinical picture of acute appendicitis have been described by authors. Another completely different disease have been found during the operation, which required spread surgical treatment combined with blood transfusion even if we didn't identified the blood group. For this reason you have to pay attention while making a final diagnosis because the mistakes are very common, about 25% in out patient department while 1--3% in clinical conditions.