Total excision of ductal carcinoma in situ is not considered as a cure and there is still a possibility of recurrence. After total excision of ductal carcinoma in situ, the probability of recurrence is lower than that of invasive carcinoma. However, cancer occurs for very complicated reasons and a few patients may experience in situ recurrence. In addition, after treatment, metastasis may occur, such as in the lungs, liver and bones, which is called distant metastasis. After total excision of ductal carcinoma in situ, even if the condition is well treated, there is still a possibility of recurrence. It should be noted that the condition can be controlled by re-surgery, radiation, chemotherapy, targeted therapy, etc. After recurrence, the specific treatment plan needs to be decided by the doctor according to the specific condition of the patient. Meanwhile, after surgery for ductal carcinoma in situ, regular rechecks are needed to prevent tumor recurrence. It is suggested that patients should not be too nervous and keep their mood happy, which is conducive to the recovery of their condition, and seek medical treatment in time if they have any discomfort.