<prompt> Most common tumor of appendix isCarcinoid tumorPseudomyxoma peritonitisAdenocarcinomaMucocele  <response>: Refer Robbins page no 9e 816 Cancer of the appendix may causeappendicitis or rupture of appendicitis. Mostly this is the first symptom of appendix cancer. The majority of appendiceal tumors arecarcinoids, while the remaining 10 to 20 are mucinous cyst-adenocarcinoma,adenocarcinoma, lymphosarcoma,paraganglioma, and granular-cell tumors. 