Appendical cystadenoma is one of the histological forms of the appendical mucocele. Preoperative diagnostics is difficult, however, due to potential iatrogennic rupture during a surgical procedure, is very important. The authors present a case review of a 62-year-old patient with itususception of the appendical cystadenoma, until now rarely reported in literature. Upon the preoperative diagnosis the appendical cystadenoma appeared as a caecal tumor or a tumor of the terminal ileum. A histological, intraoperative, diagnosis was established, followed by a final histological examination of the resected tissue. The authors discuss contemporary options of the preoperative diagnostic measures of the appendical tumors, stressing up all risks of aspiration cytology as well as risks of laparoscopic approach in this pathology management

        Key words: mucocele of the appendix – cystadenoma of the appendix – intususception of the appendix