The cure rate for mucinous adenocarcinoma of the appendix correlates with the length of time the cancer has been there, and the length of time it has been treated. Early 5-year survival is about 90%. Regional metastasis is 70% to 80%. Diffuse throughout the abdomen is <50%. Appendiceal adenocarcinoma originates from the glandular epithelium of the appendiceal mucosa, and a barium enema prior to surgery shows an extra-appendiceal mass. The principle of treatment is right hemicolectomy, and the prognosis of mucinous adenocarcinoma is better. If the early mass is small and without metastasis, it can be cured by simple surgical resection, and the general 5-year survival rate is more than 90%. When regional lymph node metastasis occurs, it usually needs to be combined with targeted therapy such as radiotherapy, and the survival rate is about 70%~80% in 5 years. When the whole abdomen is diffuse, the cure rate is less than 50% in 5 years. When appendiceal mucinous adenocarcinoma is present, do not use medication on your own, you need to seek medical attention as soon as possible to avoid worsening of the cancer.