Generally speaking, carcinoma in situ will not progress after surgery. If the surgery has been cleanly excised and there is no local residue of tumor tissue, the tumor will not recur in most cases. Carcinoma in situ is a tumor confined to the inner layer of mucosa, which has not broken through the basal layer to infiltrate deeper, and it can be radically resected. If the surgery has been cleanly resected and there is no residual tumor, the tumor will not recur and progress, but the low rate of recurrence doesn’t mean that it won’t recur and it’s not sure if there is a new tumor in peripheral tissues, therefore, it is still necessary to have regular rechecks after the surgery. And you should pay attention to reduce the tumor-inducing factors in your life, such as quitting smoking and drinking, avoiding spicy and stimulating food, not eating pickled food, etc., consuming more vitamin-rich fruits, and paying attention to regular review to prevent recurrence.