Mobile mass in the descending aorta with multiple embolism

: A 46-year-old man was referred to our hospital for abdominal pain. Computed tomography (CT) revealed mobile mass in the descending aorta and multiple systemic embolism. Emergent operation was indicated. Under femoral vein to femoral artery bypass, removal of mobile mass was performed. We resected the mass with stem including aortic wall and closed the aortic defect with the pericardial patch. Postoperative course was uneventful. Histopathology of the mass was organized thrombus with inflammatory change.