Unusual Presentation of Extraskeletal Mesenchymal Chondrosarcoma: A Case Report

Mesenchymal chondrosarcomas are extremely rare and aggressive tumors that primarily affect patients between the ages of 20 30. These neoplasms typically found in lower limbs cranial region. Their occurrence within soft tissues is exceedingly rare, initial presentation often includes immediate metastatic dissemination. Given extraordinarily low prevalence extraskeletal mesenchymal chondrosarcoma, treatment approaches remain non-standardized. Surgical resection combined with neoadjuvant chemotherapy or radiotherapy most commonly favored strategy by medical teams. In this case report, we present a 72-year-old patient no specific history, who presented non-metastatic chondrosarcoma located popliteal fossa. The therapeutic intervention encompassed surgical followed adjuvant radiotherapy. After 18 months follow-up period, there was evidence local recurrence distant metastases. disparity patient's clinical characteristics existing literature may provide new insights into understanding neoplastic entity.