An Anatomic Curiosity: A Sliver of a Liver in an Unusual Location

Abstract A 48-year-old woman underwent preoperative cardiac testing prior to gastric bypass. She was incidentally found to have a right atrial mass on transthoracic echocardiography. Subsequent cardiac magnetic resonance confirmed this finding. She underwent excision of the mass. Tissue pathology revealed ectopic hepatic tissue. (Level of Difficulty: Advanced.)