title: Laparoscopy-assisted resection of an appendiceal mucinous cystadenoma.
abstract: We present a 48-year-old man with a complaint of dull right-lower abdominal pain who was diagnosed with mucocele of the appendix. He underwent laparoscopy-assisted resection of the tumor. In the procedure, the entire right colon was freed from the retroperitoneal structures without rupturing the tumor; and ileocecal resection and anastomosis were performed extracorporeally. The pathological diagnosis of the tumor was mucinous cystadenoma of the appendix, measuring 9.0 cm × 8.0 cm × 4.0 cm. The postoperative course was uneventful, and he had no recurrent disease at a 2-year follow up. When resecting an appendiceal mucinous tumor laparoscopically, it is essential (1) to keep the tumor intact during manipulation, and to use a wound-protecting device when delivering the lesion; (2) to consider the extent of tumor resection with a negative surgical margin as well as prophylactic lymph node dissection in cases of suspected adenocarcinoma, even though the oncological adequacy of the laparoscopic procedure for carcinoma remains to be elucidated; and (3) to check whether any mucinous fluid has accumulated in the abdominal cavity, which represents an indication for open surgery.
authors.affiliation: Department of Surgery, Eiju General Hospital, Tokyo, Japan. hmatsui@tok.u-tokai.ac.jp
authors.forename: Hideo
authors.initials: H
authors.lastname: Matsui
authors.forename: Naoki
authors.initials: N
authors.lastname: Igarashi
authors.forename: Atsushi
authors.initials: A
authors.lastname: Okamura
authors.forename: Osamu
authors.initials: O
authors.lastname: Itano
authors.forename: Yasumasa
authors.initials: Y
authors.lastname: Koyama
authors.forename: Makoto
authors.initials: M
authors.lastname: Miyakita
mesh_terms: D001063:Appendiceal Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D018291:Cystadenoma, Mucinous / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D006801:Humans; D010535:Laparoscopy / Q000379:methods*; D008197:Lymph Node Excision; D008297:Male; D008875:Middle Aged; D011859:Radiography; D016896:Treatment Outcome