renal cancer

Renal cancer, also known as kidney cancer, originates in the kidneys—the organs responsible for filtering blood and producing urine. It typically begins in the lining of the small tubes within the kidney. Often, it develops slowly and may not cause symptoms initially, but as it grows, it can lead to blood in the urine, pain in the side or back, and a lump or mass. Risk factors include smoking, obesity, and high blood pressure. Treatment options vary and may include surgery, targeted therapy, or immunotherapy, depending on the stage and spread of the cancer.