Primary lung mesenchymal chondrosarcoma with kidney and intermuscular metastases: a case report and literature review

Mesenchymal chondrosarcoma (MCS) is an uncommon sarcoma which primarily occurs in the extremities but rarely originates from the lung. Herein, we report a case of a 29-year-old female who presented with a lung mass detected by the physical examination. The tumor was resected and the pathological examination revealed primary MCS of the lung. After the operation, the chemotherapy and radiotherapy were performed. However, the follow-up showed evidence of kidney and intermuscular metastases, and both of the lesions were excised with adequate margins. In addition, a review of the clinical knowledge regarding this rare disease is discussed.