Some tests which detect cancer could be called "screening for dysplasia". The principle behind these tests is that physicians expect dysplasia 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 dysplasia at certain time, then doing testing before waiting until new dysplasia 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 dysplasia on biopsy during screening for Barrett's esophagus, then research shows that there is little chance of any test detecting dysplasia 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 1-2 adenomatous polyps removed.
Read more about this topic: Dysplasia
Other articles related to "screening":
... and Television to ban director Lou Ye and producer Nai An for improperly screening their 2006 film Summer Palace at the Cannes Film Festival without ... Lost Indulgence missed a second scheduled screening at the Udine East Asian Film Festival, when a screening was again canceled due to failure to obtain official permission ...
... finding colorectal cancer and warrant more frequently screening ... The screening guidelines are the same, as for other colonic adenomas ... The screening interval is dependent on (1) the number of adenomas, (2) their size and, (3) whether high-grade microscopic features are present ...
... This can either be achieved through a screening process of potential recipients, or else by making the benefits of the transfers so low only the most desperate will apply ... a section of society benefitting from the programme and avoids the transaction costs of screening ...
... These procedures include screening activities which include but are not limited to review of group-based data (cumulative records, enrollment records, health records, and report cards ... Child-Study, Early Intervening or Instructional Support Team, the above screening activities may lead to consideration by the teams to move the next level of ... When screening results suggest that the student may be eligible, the District seeks parental consent to conduct a multidisciplinary evaluation ...
Screening can also mean preventing access of something by some sort of barrier. Particular cases:
- Electric field screening
- Electromagnetic shielding in physics, the exclusion of electric, magnetic, or electromagnetic fields by a metallic screen or shield
- In atomic physics and chemistry, the screening effect or atomic shielding is the reduction of effective nuclear charge by intervening electron shells
- Screening (printing), a process that represents lighter shades as tiny dots, rather than solid areas, of ink by passing ink through a perforated screen
- Screening is a process stage when cleaning paper pulp