Is the ulcer that does not ache cancer

The first is whether oral ulcers can not heal for a long time. If oral ulcers do not heal for a long time, such as more than a month, there is a possibility of malignant transformation. The second is the size of oral ulcers. If oral ulcers continue to increase and cannot heal, there will be a possibility of cancer. The general distinction between mouth ulcers and cancer is unrelated to pain, and the duration and size of mouth ulcers.