Periaortic abscess on CT after aortic endograft

A CT scan following aortic endografting (A) shows a normal postprocedure appearance. Eight months later (B), the patient presented with fever, and repeat CT scan showed fluid accumulation around the aortic sac (arrow). MRSA grew from the aspirate, and, because the patient was too ill to undergo definitive surgery, a percutaneous drain was placed into the abscess (C, arrow). Three days later, contrast injection into the cavity showed a reduced size of the periaortic abscess cavity (D, arrow).