6. Flat Lesion with a Scaly, Crusted Surface
Flat lesions that develop a scaly surface or refuse to heal, like the previous lesions, may be squamous cell carcinomas.
These types of cancers can occur on the skin or even in the respiratory tract, GI tract, and hollow organs. They are not generally deadly but may become so. They can be disfiguring or cause scars, so treat early.
Squamous cell carcinoma is on the rise due to excessive use of tanning beds or excessive sun exposure.