[Anomalous implantation of the appendiceal base. A case report].

The authors report a case of anomalous appendicular implantation observed in a 17-year-old male. The appendix was not found in its usual site, but upon the antero-lateral wall of ascending colon, 15 cm from the junction of the taenia of caecum. A partial mobilization of caecum was required for appendectomy. By a review of recent bibliography this anomaly seems very unusual considering the poor number of reports in literature. The anatomy and embryology of the vermiform appendix are briefly presented, and at the same time the possible pathogenetic hypothesis of this anomaly, such as described by other colleagues. The authors underscore how, knowledge of another case report, in their experience, suggested to search for appendix in an unusual site, before concluding for an appendicular agenesis.