Indications and contraindications to laparoscopic surgery continue to
be refined. Laparoscopic appendectomy for acute appendicitis is freque
ntly selected by patients and surgeons, and clinical studies show it t
o be a reasonable alternative. In this case study, laparoscopic surger
y was used to resect an appendiceal mucocele caused by a nonperforated
mucinous adenocarcinoma. Implants of mucinous tumor were found widely
disseminated on peritoneal surfaces at laparotomy 9 months later. As
a result of this case study, the authors suggest that when an appendic
eal mucinous tumor is encountered at laparoscopy, a special situation
requiring totally atraumatic appendectomy is indicated. This clinical
situation should be considered an indication for conversion to open ap
pendectomy, All appendiceal tumors, including the most benign-appearin
g adenomas, can result in diffuse peritoneal implantation. This is the
first report of an appendiceal mucinous tumor resected by laparoscopy
associated with subsequent diffuse peritoneal carcinomatosis. This pa
tient presentation reaffirms that dis semination of cancer may be asso
ciated with laparoscopic resection of structures containing a malignan
cy.