Precancerous lesions

特許 権利維持 A precancerous condition (or premalignant condition) is a generalized state associated with an increased risk of cancer. If left untreated, these conditions may lead to cancer. Sometimes the term "precancer" is used to describe carcinoma in situ, which are non-invasive cancers that are technically "cancers," but have not progressed to an aggressive, invasive stage. Not all carcinoma in situ will progress to invasive disease.