Case 11 Answer

WetReadRad -

Well not much problem with this one.

Answer: Fournier gangrene (aka necrotizing fasciitis) 

keys to remember: diabetes, alcohol use, obesity. And I ave seen several cases post-colonscopy (ie skin/mucosal trauma).

reference: http://pubs.rsna.org/doi/full/10.1148/rg.282075048