Multifocality of renal cell tumors is a factor to consider before performing a partial nephrectomy.

Background: We conducted a retrospective analysis of radical nephrectomies performed in our clinic in order to evaluate the incidence of multifocality in relation to the stage, grade, size and histological type.

Materials And Methods: Preoperative imaging studies and the final pathological results of surgical specimens were reviewed. Separate primary tumors at a distance of more than one cm from the primary tumor were counted.