While most skin cancer arises as a brand new spot, some squamous cell carcinoma develops from a precancer called actinic keratosis, or solar keratosis (usually a rough, flat, pink spot on the skin, ...
Paget’s disease of the breast or nipple involves dry skin ... of a type of precancerous lesion known as ductal carcinoma in situ (DCIS) or an underlying invasive cancer. The symptoms of Paget ...