Squamous cell carcinoma of the skin most often occurs on sun-exposed skin, such as your scalp, the backs of your hands, your ears or your lips. But it can occur anywhere on your body, including inside your mouth, the bottoms of your feet and on your genitals. Signs and symptoms of squamous cell carcinoma of the skin include:  A firm, red nodule A flat sore with a scaly crust A new sore or raised area on an old scar or ulcer A rough, scaly patch on your lip that may evolve to an open sore A red sore or rough patch inside your mouth A red, raised patch or wartlike sore on or in the anus or on your genitals 
squamous cell carcinoma skin occurs sun-exposed skin  scalp  backs hands  ears lips  can occur body  including inside mouth  bottoms feet genitals  signs symptoms squamous cell carcinoma skin include:  firm  red nodule flat sore scaly crust new sore raised area old scar ulcer rough  scaly patch lip may evolve open sore red sore rough patch inside mouth red  raised patch wartlike sore anus genitals 
squamous cell carcinoma