For carcinoma in situ of the breast, you can have a review once every three months in two years, once every six months from the second to the fifth year, and then once after five years if you are in good condition. Carcinoma in situ is a relatively early form of breast cancer. Usually, the first month after successful surgery is the time for review, and the first two years need to be reviewed every three months, because the probability of breast cancer recurrence is the highest in the first two years. If the condition is good, the frequency of review can be reduced later, and the frequency of review also depends on the patient’s own condition. Breast cancer in situ is a kind of early cancer, the earlier it is detected, the more favorable it is for treatment, and the better the treatment effect will be, so the principle of early detection and early treatment must be upheld. Therefore, the patient must uphold the principle of early detection and early treatment. Maintain a good state of mind, as emotions also have a considerable impact on the condition.