Case 39 Answer

Hopefully this wasn’t too hard (I didn’t want to scare the 3rd years before their little quiz)

Answer: psuedomembranous colitis (ie C. diff colitis)

short reference:http://radiopaedia.org/articles/clostridium-difficile-colitis

nice write-up: http://pubs.rsna.org/doi/pdf/10.1148/radiographics.19.4.g99jl07887