After a lumpectomy what causes discoloration of the breast?

After a lumpectomy, discoloration of the breast can be caused by bruising, swelling, and inflammation resulting from the surgical procedure. The disruption of blood vessels during surgery may lead to blood pooling under the skin, causing a range of colors from red to purple. Additionally, the body's healing process can cause changes in skin pigmentation. These discolorations typically fade over time as the tissues heal.