Precancerous is a term used to identify cells that appear to have the potential to become cancer but have not yet developed into cancer cells. Precancerous cells often bear similar characteristics to cancer cells, including changes in size, shape, and composition. Precancerous cells can be found in different parts of the body, including the digestive tract, skin, esophagus, and cervix. Precancerous lesions are sometimes referred to as precancerous growths. These lesions are typically harmless, and many people live with them without developing cancer. However, if not detected and treated, precancerous lesions can develop into cancer and spread to other parts of the body. Early detection of precancerous cells is important for reducing the risk of developing cancer. Tests such as colonoscopies, Pap smears, and skin exams can detect precancerous cells. When precancerous cells are detected, treatments such as surgery, cryotherapy, laser therapy, chemotherapy, and radiation may be used to remove the precancerous cells and reduce the risk of them becoming cancer. Precancerous cells can be reversed with early detection and treatment. People can reduce their risk of developing a precancerous lesion by avoiding exposure to risky substances and behaviors, such as smoking or overexposure to the sun. Regular visits to the doctor and regular screenings can also help to detect precancerous cells early.