Intracardiac heterotopic liver is a very rare entity. The most unique aspect of this entity is the increased carcinogenic potential of the tissue. This condition must be considered when assessing an intracardiac mass along with more common differential diagnoses such as neoplasms, thrombi, and vegetations. In this report, we present a case of a patient who presented to cardiac surgery for elective excision of a right atrial mass that was determined to be an accessory liver lobe. We discuss the diagnostic challenges, clinical management, and surgical and anesthetic implications of this rare finding.