Renal tumors in childhood.

A great variety of tumors and tumor-like lesions affect the kidneys in childhood. We have discussed the practical aspects of the examination of tumors because the pathologist's role is becoming more critical to the staging and management of these patients. The use of newer techniques shows promise in renal tumors, and flow cytometry with DNA ploidy analysis may prove useful in more precisely identifying high-risk patients. Invaluable data continue to be generated from the large cooperative groups, particularly the National Wilms' Tumor Study, which helps refine our understanding of the renal tumors and their proper management. Close collaboration between the oncologist, the radiologist, the surgeon, the pathologist, and the radiation oncologist is the mainstay in providing the best possible outcome for these patients.