A Urologic oncologist would be in charge of Steven's care.
Explanation:
Health care professionals treating cancers are referred to as Oncologist, however depending upon the different types of bodily cancers they are named accordingly. Urology is branch of medical science concerned with physiology, functioning and treatment related to disorders of urinary tract.
Treatment procedure in case of Kidney cancers depends on metastasis. And accordingly the line of treatment would be surgery, targeted therapy, Immunotherapy or combination of these.
Radiation and chemotherapy would be used depending upon the stage of cancer.
