A rare case of primary adult cardiac rhabdomyosarcoma with lower extremity metastasis

Primary cardiac tumors are uncommon. Rhabdomyosarcomas are among the rarest type of cardiac sarcomas. Echocardiography, cardiac MRI, and computed tomography scan can help the diagnosis and presurgical management. In this article, we report a rare case of primary cardiac rhabdomyosarcoma originating from the mitral valve with left femoral metastasis in a patient in her 60s. The diagnosis was made using transesophageal echocardiography and cardiac MRI. A metastatic lesion was found in an extended PET scan in one of her clinical follow-ups due to her leg pain. Based on this report, we suggest that extending PET scan to the lower extremities could be helpful in the early diagnosis and treatment of remote metastases of cardiac rhabdomyosarcomas.