Renal cancer, also known as kidney cancer, originates in the kidneys, which are vital organs responsible for filtering waste from the blood to form urine. Renal cancer typically begins in the lining of small tubes within the kidneys. Symptoms may include blood in the urine, persistent pain in the side or back, a lump or mass in the abdomen, and unexplained weight loss. Treatment options for renal cancer depend on various factors such as the stage of the cancer, the patient's overall health, and may include surgery, targeted therapy, immunotherapy, radiation therapy, or a combination of these approaches. Early detection and treatment can improve outcomes for patients with renal cancer.