Cystic masses are usually tumors, but it is impossible to distinguish whether they are benign or malignant tumors, such as plasmacytoma and mucinous adenoma, which are benign tumors, while if they are plasmacytoma and mucinous adenocarcinoma, they are malignant tumors. For benign tumors and malignant tumors, the treatment is also different. For benign tumors, surgical excision is usually sufficient, while for malignant tumors, a comprehensive examination is needed before surgical excision to determine the specific clinical stage, and then a reasonable treatment is formulated according to the clinical stage. Moreover, the scope of surgical resection is often larger than that of benign tumors, and the surrounding regional lymph nodes need to be cleared.