Thank you so much. It has only been 8 weeks since the cancer was removed and the leukoplakia returned after 6 weeks. The ENT has seen it and although he was concerned it obviously had not turned to more cancer yet. He took measurements of the leukoplakia and the knots on my jaw. My next appointment is at the end of July, but he wants me to call if I noticed any change or bleeding. The leukoplakia has slowly expanded. My problem is not knowing what is enough make the to call. I don't want over-react every time the leukoplakia returns.