Type II Cystic lesion with the following features: 1 or 2 slender (≤1 mm thick) septations, or fine calcifications within the cyst wall or septations; benign cysts of high density and homogeneity; He Jinliang, Department of Ultrasound, Nanpi County People’s Hospital 3 cm or less in diameter; one-quarter of the cyst wall extends to the outer part of the kidney, allowing the cyst wall to be evaluated’ No contrast enhancement; Type IIF Minimal Mixed cystic lesions that require review. Some of the suspicious signs in these lesions need to be reviewed so that any characteristic changes can be detected. Type III A cystic mass that is truly indeterminate and requires surgical evaluation, although most are confirmed to be benign and are characterized by: homogeneous wall thickness or nodularity; coarse or irregular peripheral calcifications; multilocularity with multiple echo-enhancing compartments; and hyperdense lesions that do not meet the criteria for type II; Type IV The lesions found are clearly malignant and include: inhomogeneous or enhancing thickening of the wall; enhancement of the wall or large nodules; and cystic lesions with no contrast enhancement. A clear substantial component in the cystic lesion.