Imaging findings of primary pulmonary synovial sarcoma with secondary distant metastases: A case report

Figure 2 Renal metastases. A: Enhanced computed tomography showed mild to moderate heterogeneous enhancement; B: Magnetic resonance imaging showed long T1 and short T2 signals; C and D: Color Doppler flow imaging: There were several hypoechoic lesions in the renal parenchyma, without obvious blood flow signals. The inner diameter of the renal vein in the renal hilum was widened and hypoechoic filling was seen inside; E-G: Contrast-enhanced ultrasonography: The whole lesion showed rapid high enhancement, and the contrast medium quickly withdrew, indicating the “fast forward and fast retreat” enhancement mode; H: Pathology image of renal metastatic synovial sarcoma (hematoxylin and eosin staining, × 400).