Fig. 17
From: What is hiding in the hindgut sac? Looking beyond rectal carcinoma
Lymphogranuloma venerum in a 26-year-old HIV-positive man. a Axial CT colonography demonstrates diffuse circumferential thickening of the rectum (arrow) with inflammatory stranding in the mesorectum (arrowhead). b Reformatted virtual colonoscopy image demonstrates a smooth stricture (arrow) with maintained mucosa. c Sagittal T2-weighted MRI and d Sagittal contrast-enhanced T1-weighted MRI reveal circumferential thickening (arrow) with luminal compromise of the rectum which is hypointense on T2-weighted MRI and shows enhancement post gadolinium administration. Images in inset are the corresponding axial MR images showing similar findings