Osteosarcoma is a malignant tumor, derived from primitive bone-forming mesenchymal cells, and its aggressive nature often leads to significant morbidity and mortality, with amputation being routinely performed in localized cases. Post-amputation morbidity has a significant impact on the quality of life of the affected individuals. The tumor frequently metastasizes to the lungs and bones, and widespread disease remains the leading cause of most patient deaths. Other metastatic sites are extremely rare. We report a rare case of a young boy who had developed osteosarcoma and was surgically treated, without any metastatic disease. Two years later, the patient developed an abdominal mass, which was diagnosed as metastatic osteosarcoma to the liver.
Keywords: extrapulmonary metastasis; hepatic metastasis; metastatic osteosarcoma; osteosarcoma; recurrent osteosarcoma.
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