Extraosseous osteosarcoma is a rare malignant tumor, most commonly occurring in the thigh, upper limbs, and retroperitoneum. However, there are only a few reported cases of renal osteosarcoma. Herein, we present the case of a 54-year-old woman with malignant extraosseous osteosarcoma of the left kidney. CT and MR imaging revealed a soft tissue mass originating from the left kidney.
Keywords: CT; MRI; extraosseous; kidney; osteosarcoma.
Copyright © 2023 Chen, Liao, Zhan, Zheng, Deng, Wang and Zhang.