Fig. 1From: A case report and literature review on nephrogenic alveolar soft part sarcoma: clinicopathological manifestations and genetic featuresTwo-dimensional ultrasound showed a solid hypoechoic mass at the upper level of the left kidney with clear boundary and annular calcification around (A). CDFI showed abundant blood flow signals (B). Contrast enhanced CT showed heterogeneous enhancement mass of left renal parenchyma (C). 3D imaging showed that the mass was located on the superior dorsal side of the left kidney, and some renal calyces were compressed and narrowed (D)Back to article page