Imaging of renal tumors

Sonography is an important, noninvasive and non-expensive method for detect ion of renal tumors. Only in early stages of transitional cell tumors, intr avenous urography is considered as a standard procedure. If a renal tumor i s suspected, computed tomography and magnetic resonance tomography should b e performed, according to the clinical situation and the expected findings. In combination with color doppler sonography and angiography, these proced ures often allow to make a specific diagnosis and are essential for preoper ative planning.