Final answer:
Squamous cell carcinoma is a common type of skin cancer that affects squamous cells in the epidermis. It is usually curable surgically.
Step-by-step explanation:
Squamous cell carcinoma is a common type of skin cancer that affects squamous cells in the epidermis. These are flattened, keratin-filled cells in the upper layers of the epidermis. Squamous cell carcinoma is usually curable surgically, as it is generally localized and unlikely to metastasize.