Kidney tumours may be benign or malignant. The most common types of malignant kidney tumours are renal cell cancers or transitional cell carcinomas. There are several types of benign tumours including angiomyolipomas and oncocytoma. About 80% of kidney tumours are malignant.
Occasionally the diagnosis can be difficult and a biopsy is required. Furthermore, the age of the patient is important concerning surgical treatment. Small tumours in the vicinity of 1