![herpetic ulcer on tongue](https://www.nationalelfservice.net/cms/wp-content/uploads/2015/05/shutterstock_90521113-150x150.jpg)
This Cochrane review of adjunctive diagnostic tests for oral cancer included 41 studies assessing vital staining, cytology, and light-based tests. The available studies were of poor quality detection with none of the tests being considered as a replacement for the currently used standard of a scalpel biopsy and histological assessment.
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