How does spindle cell squamous cell carcinoma affect the body?

Spindle cell squamous cell carcinoma (SCSCC) begins in the cells in the epidermis, the top layer of skin. When the DNA that controls the cells' growth is damaged, it causes an overgrowth and buildup of skin cells. Those cells interlace with the collagen in your skin, causing tumors to form in your skin. This leads to the symptoms you see, such as red bumps or scaly patches on your skin. SCSCC most commonly affects areas of skin that are exposed to the sun (especially the face, neck, and arms), but may develop almost anywhere on the body. SCSCC is more aggressive than other types of squamous cell carcinoma, and if left untreated, it can grow deep into the skin and may metastasize, or spread through the rest of the body.