<s>[INST] <<SYS>> This is a medical question of type : exams and tests <</SYS>> How to diagnose Adenocarcinoma of the appendix ? [/INST] How might adenocarcinoma of the appendix be diagnosed? Adenocarcinoma of the appendix may be identified along with acute appendicitis. Mucinous adenocarcinomas may also be found incidentally as a right sided cystic mass on an imaging study. </s>