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Initial CT abdomen/pelvis. Red arrow indicates an ill-defined 5-6 cm focal fluid collection with surrounding inflammation in the right mid abdomen center around what appears to be a ruptured aneurysm or pseudoaneurysm.
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At the outside hospital a computed tomography (CT) abdomen/pelvis with intravenous (IV) contrast was performed and was remarkable for a five-to-six-centimeter contrast containing fluid collection with surrounding inflammation in the right mid abdomen concerning for ruptured SMA aneurysm (Fig. 1).
Repeat CT abdomen/pelvis on hospital day 9. Red arrow indicates a large 8.4 cm complex collection with surrounding mesenteric edema in the right lower quadrant is contiguous with the cecum, ascending colon, and terminal ileum.
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RLQ contiguous with the cecum, ascending colon, and terminal ileum and suggestive of an abscess or arteriovenous malformation (Fig. 2). Repeat abdominal angiography performed by interventional radiology was unremarkable for intra- abscess extravasation.