Renal tumors: The good, the bad, and the ugly

Abstract

Renal cancers comprise a wide variety of neoplasms with quite different genetic and molecular characteristics and clinical behaviors. Several issues of significant note have arisen in association with our increased understanding of these tumors, including questions regarding early diagnosis, the evaluation of cystic lesions, the behavior of tumors occurring in young patients, and insights regarding the prognosis and best follow-up strategies for these tumors. © 2007 The Japanese Urological Association.