Primary Chondroblastic Osteosarcoma of the Kidney: A Case Report and Review of Literature.

The primary renal chondroblastic variant of osteosarcoma is an exceedingly rare and aggressive malignancy with poor prognosis. This report details the case of a 40-year-old female presenting with flank pain diagnosed with primary renal osteosarcoma. We outline the clinical, radiological, and histopathological features of this tumor, along with current therapeutic strategies.