How long does cancer in situ usually relapse and metastasize?

Cancer in situ refers to cancer tissue does not break through the basement membrane, has not yet formed invasive lesions, is an early event of cancer. If found in situ cancer, after removal of cancer tissue generally will not occur recurrence and metastasis, patients do not need excessive treatment, but patients should pay attention to follow-up, timely detection of disease changes. Tumor occurrence is a complex and continuous process, which is related to heredity, gene mutation, external environment and the factors of the body itself. Generally, it will go through the process from carcinoma in situ to invasive carcinoma. Early detection of lesions can obviously improve the prognosis.