What are bengin renal tumors?

1-Benign   Renal Cyst :most common benign renal mass -Exist in 50% of normal population above age 50 2-Renal Cortical Adenoma: The diagnosis of renal adenoma remains controversial, with many believing that all solid renal epithelial-derived masses are potentially malignant and should be treated as such. 3-Oncocytoma :represents 3% to 7% of all solid   renal masses. A central scar is commonly found, but prominent necrosis or hypervascularity is lacking. In 3 to 30% , oncocytoma coexist with RCC 4-angiomylolipoma: varying amounts of mature adipose tissue, smooth muscle, and thick-walled vessels Approximately 20% of AMLs are found in patients with tuberous sclerosis syndrome (TS) (autodominant - retard epilepsy, adenoma - CT most reliable dX)