Metastatic Melanoma Extending along the Pulmonary Vein into the Left Atrium: A Rare Route of Metastasis Characterized by Transesophageal Echocardiography

•Melanoma commonly metastasizes to the heart through hematogenous spread.•These metastases can resemble benign cardiac tumors.•Isolated left-sided cardiac involvement is rare with metastatic melanoma.•Metastasis can atypically take a course through the pulmonary vein.•Multimodality imaging is useful for characterization of these intracardiac masses.