[Invagination in an adult as a rare cause of acute abdomen - 2 case reports].

The authors present two cases of intestinal invagination in adult patients. The first case is an 84-year-old polymorbid female patient indicated for acute surgical revision due to ileus with a finding of invagination in the sigmoid area, with no evidence of an organic cause. The second case, an 80-year-old polymorbid female patient, was indicated for acute surgical revision also due to ileus with a finding of invagination on the small intestine and with a proven neuroendocrine tumor. Unlike invagination in childhood where its cause is usually unknown[1,7], intestinal invagination is relatively rare in adults and it is mostly due to an organic cause, most frequently a benign tumor of the small intestine[2]. This study focuses on invagination as a rare cause of acute abdomen in adult patients.Key words: invagination - ileus - idiopathic.