case_images: PMC7078447_01
case_images: Contrast abdominal CT revealing mass in the right kidney (A) and a mass in the left abdominal wall (B).
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case_images: Previous blood work-up revealed anemia and previous CT and ultrasound revealed a solid injury of 10 cm on the right kidney and a mass in the right flank (Fig. 1).
case_images: Right kidney. The tumor (10 x 8,5 x 7 cm) occupies almost all of the kidney, invading parenchyma and the renal pelvis.
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case_images: PMC7078447_01_gr2.jpg
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case_images: The tumor and the excised kidney (Fig. 2) were submitted to a histopathological analysis, which confirmed renal cell carcinoma of clear cell type with sarcomatoid cell type component (Fig. 3).
case_images: The fibromixoid sarcoma is shown. Myxoid areas and a swirling whorled growth pattern can be seen. Hematoxylin/Eosin, X100.
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case_images: After resection, the tumor was sent to histopathological analysis, which revealed a neoplasia with myxoid component and a predominance of fusiform cells (Fig. 4).