Stereotactic Body Radiation Therapy in Treating Patients With Metastatic or Recurrent Kidney Cancer

This pilot clinical trial studies the side effects and best dose of stereotactic body radiation therapy in treating patients with kidney cancer that has spread to other places in the body (metastatic) or has come back (recurrent). Stereotactic radiosurgery, also known as stereotactic body radiation therapy, is a specialized radiation therapy that delivers a single, high dose of radiation directly to the tumor and may kill more tumor cells and cause less damage to normal tissue.