Robotic-Assisted Resection of Rare Mitral Valve Hemangioma.

Cardiac hemangiomas are extremely rare tumors accounting for only 1.5%-2.5% of all cardiac tumors. According to most recent literature, only 13 mitral valve hemangiomas have been reported. A 78-year-old man was undergoing routine transthoracic echocardiography monitoring for an ascending aortic dilation when a vegetation on the mitral leaflet was incidentally detected. This lesion presented as a 0.5- × 0.6-cm mobile mass arising from the medial aspect of the A2 cusp. Despite the asymptomatic nature of the aforementioned lesion, resection was pursued given presumed diagnosis of papillary fibroelastoma and concern for risk of stroke. The mass was resected using minimally invasive robotic approach, and final pathology was consistent with hemangioma.