The pentad of abdominal pain, pyrexia of unknown origin, malaise, weight loss, and nausea remains the most convincing presentation of mycotic aneurysms of the SMA and IMA. Computed tomography is the investigative modality of choice, and such patients are best served with aneurysmectomy alone in IMA aneurysms and interposition vein grafting in SMA aneurysms after initiation of antimicrobial therapy on suspicion of the diagnosis.
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