Final answer:
Small, scaly patches of skin that may become cancerous are known as squamous cell carcinoma, a type of skin cancer that originates from keratinized cells of the epidermis and typically presents as a firm, red nodule, or a flat lesion with a scaly surface.
Step-by-step explanation:
Small, scaly (highly keratinized) patches of skin that may become cancerous are called squamous cell carcinoma. This condition occurs in squamous cells, which are flattened, keratin-filled cells in the upper layers of the epidermis. Squamous cell carcinoma is recognized as the second most common type of skin cancer in the United States, with over two million cases reported annually.
Squamous cell carcinoma often presents as a firm, red nodule or a flat lesion with a scaly or crusty surface. These lesions are typically localized and are less likely to metastasize, which increases the chances of successful surgical removal and cure. Nonetheless, it's crucial to detect squamous cell carcinoma early for the best treatment outcomes.
In contrast, melanoma is another type of skin cancer that appears far more dangerous, as it is highly metastatic and can be challenging to detect before it has spread. Therefore, regular skin checks for any new changes and consulting a doctor if anything suspicious appears are essential in managing skin cancer risks.