Submitted by Jason Merchant, MD and Mamata Chithriki, MD.
31 year old male with worsening abdominal pain for two days, now localized within the right lower quadrant. Past medical history is unremarkable.
Shown below are selected CT images through the pelvis with intravenous and rectal contrast:
CT With Contrast:
What is the salient abnormality?
Wall thickening of the ascending colon
Free intraperitoneal air
Halo of mesenteric fat stranding
Thickened, fluid-filled appendix
Thickened loops of small bowel