Some tests which detect cancer could be called "screening for<unk> ". The principle behind these tests is that physicians expect<unk>  to occur at the same rate in a typical individual as it would in many other people. Because of this, researchers design screening recommendations which assume that if a physician can find no<unk>  at certain time, then doing testing before waiting until new<unk>  could potentially develop would be a waste of medical resources for the patient and the healthcare provider because the chances of detecting anything is extremely low. Some examples of this in practice are that if a patient whose endoscopy did not detect<unk>  on biopsy during screening for Barrett's esophagus, then research shows that there is little chance of any test detecting<unk>  for that patient within three years. Individuals at average-risk for colorectal cancer should have another screening after ten years if they get a normal result and after five years if they have only one or two adenomatous polyps removed.
Epithelial dysplasia
Mammoplasia
Intraepithelial neoplasia
Atypical hyperplasia
Papilloma
Squamous intraepithelial lesion
Field cancerization
Squamous metaplasia