Laparoscopic treatment of cystadenocarcinoma of the appendix penetrating in the sigmoid colon.

Adenocarcinoma of the vermiform appendix is a rare neoplasm of the gastrointestinal tract that most commonly presents as right lower abdominal pain, mimicking acute appendicitis. Presentation caused by loco-regional spread with involvement of adjacent structures is rare. An accurate and complete preoperative diagnosis has been rare in the past; however, modern imaging techniques allow recognition of most complications and associated conditions. The diagnosis is confirmed postoperatively. Aggressive surgical management is the treatment of choice in appendicular adenocarcinoma. We report the case of appendicular mucinous cystadenocarcinoma in a 55-year-old lady with penetration of the sigmoid colon treated with laparoscopic-assisted sigmoid and en block right hemicolectomy. It was possible to manage this complex case by using a laparoscopic procedure with all the known benefits of minimally invasive surgery.