Left ventricular metastasis of osteosarcoma: A report of an unusual case

Background Secondary cardiac tumors are far more frequent than primary tumors. Cardiac metastasis of osteosarcoma is extremely rare. Case Presentation We report a 14-year-old child with left femur osteosarcoma that had metastasized to the left ventricle after 30 months of follow-up. The diagnosis was confirmed based on the findings of transthoracic echocardiography and fluorodeoxyglucose positron emission tomography/computed tomography. Surgical removal was indicated in the patient, but his parents refused this decision, and the patient was discharged and admitted to a pediatric oncology center for chemotherapy. The patient died after four courses of chemotherapy. Conclusion Cardiac metastasis of osteosarcoma is a strong predictor of disease. The demographic differences shown in our case include male sex and a short interval between onset and cardiac involvement.