Endometrial polyps are usually benign although some may be precancerous or cancerous. EIN lesions demonstrate all of the behaviors and characteristics of a premalignant, or precancerous, lesion. The cancer may form from the precancerous lesion called ductal carcinoma in situ. This could be a potential biomarker for future screens of cancerous and precancerous cervical disease. Lasers are used to treat cancer by shrinking or destroying tumors or precancerous growths. Koilocytes may be found in potentially precancerous cervical, oral and anal lesions. Exocrine cancers are thought to arise from several types of precancerous lesions within the pancreas. It is uncommon and a possible indication of a precancerous or cancerous condition. While cancer is by definition malignant, a tumor can be benign, precancerous, or malignant. As a screening test, VIA is comparable to cervical cytology in accurately identifying precancerous lesions. C ratio is commonly associated with precancerous dysplasia as well as with malignant cells. Reinke's edema is considered a benign polyp that may become precancerous if smoking is involved. As with other precancerous conditions, not all carcinoma in situ will progress to invasive disease. Condoms may also be useful in treating potentially precancerous cervical changes. More specifically, CIN refers to the potentially precancerous transformation of cells of the cervix.