A kidney tumor is an abnormal growth of cells in the kidney, which can be benign (non-cancerous) or malignant (cancerous). These tumors can affect kidney function and may lead to symptoms such as blood in the urine, back pain, or unexplained weight loss. Early detection is important for effective treatment. Diagnosis typically involves imaging tests like CT scans or ultrasounds, and a biopsy may be performed to determine the nature of the tumor. Treatment options vary based on the type and stage of the tumor and may include surgery, radiation therapy, or targeted drug therapy.