Symptoms:

The main symptom of squamous cell skin cancer is a growing bump that may have a rough, scaly surface and flat reddish patches.

The bump is usually located on the face, ears, neck, hands, or arms, but may occur on other areas.

A sore that does not heal can be a sign of squamous cell cancer. Any change in an existing wart, mole, or other skin lesion could be a sign of skin cancer.

Signs and tests:

A lesion on the skin may indicate a squamous cell carcinoma. A biopsy and examination of the lesion can confirm whether it is squamous cell cancer.