It is not possible to generalize which is more serious, ductal carcinoma or invasive carcinoma, because breast cancer is a common malignant tumor in women, and clinically breast cancer includes several pathological types, among which ductal carcinoma and lobular carcinoma are the more common ones. Ductal carcinoma includes two stages: ductal carcinoma in situ and invasive carcinoma, while ductal carcinoma in situ belongs to the early stage and invasive carcinoma belongs to the middle and late stage of breast cancer. In terms of prognosis and survival time, the prognosis and survival time of invasive carcinoma are significantly worse than those of in situ carcinoma, that is, the severity is higher than that of ductal carcinoma in situ, and invasive carcinoma is included in ductal carcinoma, so we cannot say in general which one is more serious.