Onconephrology
Onconephrology (from the Ancient Greek onkos (ὄγκος) meaning bulk, mass, or tumor, nephros (νεφρός) meaning kidney, and the suffix -logy (-λογία), meaning "study of") is a specialty in nephrology that deals with the study of kidney diseases in cancer patients. A nephrologist who takes care of patients with cancer and kidney disease is called an onconephrologist.