{Reference Type}: Case Reports {Title}: Case Report: Assessment of primary myxofibrosarcoma in the left atrium using multimodal ultrasonography. {Author}: Hu L;Wang Z;Chen Y;Zhang X; {Journal}: Front Cardiovasc Med {Volume}: 11 {Issue}: 0 {Year}: 2024 {Factor}: 5.846 {DOI}: 10.3389/fcvm.2024.1378655 {Abstract}: Primary myxofibrosarcoma of the heart, a rare cardiac malignancy, was diagnosed in a middle-aged female patient exhibiting progressive dyspnea following transthoracic echocardiography and pathological analysis. Postoperatively, the patient underwent chemotherapy and Lenvatinib mesylate therapy, with regular check-ups confirming her survival. After 10 months the patient is still alive and well.