“…The contribution of excretory intravenous urog raphy, ultrasonography (US) and computerized tomog raphy (CT) in staging preoperatively renal cell carci noma is well documented [1][2][3][4][5][6]. Angiography has also been used extensively not only for evaluating venous involvement but for the T staging of tumors as well [5][6][7][8][9][10][11], However, a complete and more precise TNM preop erative staging, including evaluation of the renal vein, requires a combination of the above-mentioned diagnos tic methods [12]. The local invasion of the tumor is best assessed with CT and US [4,6,13], For determining vein invasion, angiography is reported to be of advantage, although US and CT have been reported to be of value [5,10,11,[14][15][16], More recently, magnetic resonance imaging (MRI) successfully supplemented the methods of diagnosis and staging of renal masses [17], In our study we evaluate the accuracy of CT, angiography andto our knowledge for the first time -MRI in staging pre operatively renal cell carcinoma, comparing the preoper ative with the operative and histopathological staging.…”