Early-stage breast cancer is primarily characterized by a single, painless small lump, which is hard with unclear boundaries and a rough surface, blending indistinguishably with surrounding tissues and difficult to move within the breast. It is usually discovered accidentally or while bathing. Swollen lymph nodes may be present, and the nipple may be inverted with possible bloody discharge. As the tumor grows, it may invade the Cooper's ligaments, causing the skin to dimple, a condition known as peau d'orange. These are all early symptoms of breast cancer. If the condition progresses, it may lead to a skin texture resembling orange peel.