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Precancerous condition
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<p>A precancerous condition is a condition, <a href="/facts/Tumor/K0ytzmPz">tumor</a> or <a href="/facts/Lesion/WJDFnyLk">lesion</a> involving abnormal <a href="/facts/Cell_(biology)/bLM9UQvy">cells</a> which are associated with an increased risk of developing into <a href="/facts/Cancer/PVW6n1D0">cancer</a>. Clinically, precancerous conditions encompass a variety of abnormal tissues with an increased risk of developing into cancer. Some of the most common precancerous conditions include certain <a href="/facts/Colon_polyp/lwHuvc9P">colon polyps</a>, which can progress into <a href="/facts/Colon_cancer/nV592sW7">colon cancer</a>, <a href="/facts/Mgus/I658DXF4">monoclonal gammopathy of undetermined significance</a>, which can progress into <a href="/facts/Multiple_myeloma/Pp9Tt33l">multiple myeloma</a> or <a href="/facts/Myelodysplastic_syndrome/6ppeUYWk">myelodysplastic syndrome</a>. and <a href="/facts/Cervical_dysplasia/6GoARC51">cervical dysplasia</a>, which can progress into <a href="/facts/Cervical_cancer/99vngUyd">cervical cancer</a>. Bronchial premalignant lesions can progress to <a href="/facts/Squamous-cell_carcinoma_of_the_lung/62aH1QSB">squamous cell carcinoma of the lung</a>. </p><p>Pathologically, precancerous tissue can range from <a href="/facts/Benign_tumor/ssJPkY84">benign neoplasias</a>, which are tumors which don't invade neighboring normal tissues or spread to distant organs, to <a href="/facts/Dysplasia/sR1UKrbB">dysplasia</a>, a collection of highly abnormal cells which, in some cases, has an increased risk of progressing to <a href="/facts/Anaplasia/ujXqPNvw">anaplasia</a> and invasive cancer which is life-threatening. Sometimes, the term "precancer" is also used for <a href="/facts/Carcinoma_in_situ/Hpj5eU4l">carcinoma in situ</a>, which is a noninvasive cancer that has not grown and spread to nearby tissue, unlike the invasive stage. As with other precancerous conditions, not all <a href="/facts/Carcinoma/NE9UY4VB">carcinoma</a> in situ will become an invasive disease but is at risk of doing so. </p>