Which of the following statements is true regarding squamous cell carcinoma?

Squamous cell carcinoma (SCC) is a type of skin cancer that arises from squamous cells, which are flat cells located in the outer layer of the skin. One of the key characteristics of SCC is its ability to occur on various parts of the body. It commonly develops in areas that have been frequently exposed to the sun, such as the face, ears, neck, and hands, but it can also manifest in areas not typically exposed to sunlight, including the mucous membranes and internal organs.

This versatility in location highlights that SCC is not confined to a specific area, making the statement that it can occur on all parts of the body true. Additionally, while certain skin cancers can be benign or asymptomatic, squamous cell carcinoma typically presents with visible signs such as a persistent sore, growth, or lump that may bleed or crust over, indicating that it is indeed a malignancy needing attention.