KnowraOral cancerLinked fromLinked fromThe 5 pages that link to Oral cancer, each with the reason it gives.All 5Broader topic 1Related 2Compared with 2Oral candidiasisCompared with: Persistent white or red lesions need assessment because they may have causes other than Candida.Mouth ulcerCompared with: A persistent ulcer can resemble a benign sore but may require evaluation for cancer.