<prompt> Inveed umbrella sign is seen in?CHPSIschemic colitisIleocecal TBCrohns disease  <response>: The Fleischner signalso known as the Inveed umbrella sign, refers to a widely gaping, thickened, patulous ileocaecal valve and a narrowed, ulcerated terminal ileum associated with Tuberculous involvement of the Ileocaecum. 