ABSTRACT
INTRODUCTION Malignant renal tumors may occur in adults and children and originate in both the renal parenchymal and calyceal tissues. In adults, renal cell carcinoma (RCC) accounts for 85-90% of cases, transitional cell carcinoma (TCC) 5-7%, sarcoma 3%, lymphomas, squamous carcinoma and metastases account for the remainder. The principal childhood malignancy is Wilms’ tumor.
