[A Case of Mucinous Adenocarcinoma of the Appendix with Peritoneal Dissemination Diagnosed by Laparoscopic Abdominal Exploration and Appendectomy].

We report a case of mucinous adenocarcinoma of the appendix with peritoneal dissemination diagnosed by laparoscopic abdominal exploration and appendectomy. A man in his 60's was diagnosed with peritoneal dissemination of mucinous adenocarcinoma incidentally during an operation for an inguinal hernia. Carcinoma of the appendix was suspected as the primary lesion after further examination. We performed laparoscopic abdominal exploration and appendectomy. The purpose of the operation was to detect the primary lesion, make a pathological diagnosis, and to evaluate the extent of peritoneal dissemination. Laparoscopic findings revealed wide spread peritoneal dissemination and the pathological findings confirmed mucinous adenocarcinoma of the appendix. These laparoscopic procedures lead to a precise diagnosis and allowed for adequate treatment selection.