[Appendiceal tumors found at appendectomy].
There are three main histologic types of appendiceal tumor: adenoma, adenocarcinoma, and neuroendocrine tumor. Neuroendocrine tumors (carcinoids) are by far the most common and account for two-third of all appendiceal tumors. Adenomas and adenocarcinomas are both rare; they share two particularities: (a) a mucinous component is both frequent and predominant, (b) they have a tendency to intraperitoneal dissemination. Rupture of any mucinous tumor-whether spontaneous or occurring during surgery-may result in pseudomyxoma peritonei; treatment of this condition requires complete resection of all lesions followed by hyperthermic intraperitoneal chemotherapy. For unruptured appendiceal tumor, the appendix should be removed by a carcinologic right hemicolectomy if the tumor appears aggressive.
Département de chirurgie oncologique, institut Gustave-Roussy, 39, rue Camille-Desmoulins, 94805 Villejuif cedex, France. diane.goere@igr.fr
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D000230:Adenocarcinoma / Q000175:diagnosis / Q000601:surgery; D000236:Adenoma / Q000175:diagnosis / Q000601:surgery; D001062:Appendectomy; D001063:Appendiceal Neoplasms / Q000175:diagnosis / Q000601:surgery*; D006801:Humans; D018358:Neuroendocrine Tumors / Q000175:diagnosis / Q000601:surgery; D010534:Peritoneal Neoplasms / Q000517:prevention & control; D011553:Pseudomyxoma Peritonei / Q000517:prevention & control; D012421:Rupture / Q000517:prevention & control