Is mouth ulcer starting point of mouth cancer?

Read about the symptoms of mouth and oropharyngeal cancer and when to see your doctor. Ulcers that do not heal. A broken area in the lining of the mouth (ulcer) that will not heal is a common symptom of mouth cancer. Pain in your mouth . Pain or discomfort in your mouth that doesn't go away is the other most common symptom of mouth cancer. read more

Saying that, not all ulcers are cancer. There are some characters of malignant ulcer (cancer). For eg, ulcer that is not healing in the expected time, margins irregular, bleeding to touch, deep ulcer, base shaggy, rim and base hard, presence of large nodes in the neck (more than 1cm). read more