Extraskeletal mesenchymal chondrosarcoma arising from kidney: a case report and literature review

Mesenchymal chondrosarcoma (MC) is a malignant tumor that usually arises from cartilaginous structures. Primary renal MS is extremely rare. Here, we reported a 33-year-old woman with solitary left renal MS presented with asymptomatic gross hematuria. Abdominal Ultrasonography and CT revealed a 7 cm mass within the left kidney with obvious calcification. The tumour was removed by radical nephrectomy. Pathological specimen revealed the typical histology of mesenchymal chondrosarcoma. The patient received no chemotherapy or radiotherapy, there was no recurrence or metastasis occurred during a 28-months follow-up and the patient’s extended survival is attributed to the early diagnosis and treatment.