Read on to learn about throat cancer symptoms and see pictures so you ... or the top of the mouth. Unlike some ulcers and other lesions like canker sores, these are minimally painful.

Medically reviewed by Edmund Khoo, DDSCanker sores and oral cancer lesions may seem similar but there are ways to tell the ...

Canker sores are not contagious; cold sores are. Canker sores only appear inside the mouth; cold sores can also develop outside the mouth. Canker sores show as a single, rounded sore; cold sores ...