<prompt> Cobblestone appearance of oral mucosa:Crohn disease.Ulcerative colitis.Whipple disease.All of the above.  <response>: Crohn disease:A type of granulomatous disease involving the intestinal mucosaAlso called regional enteritisCharacterized by granulomatous, superficial ulcerations of the intestinal tract with frequent fistulas developing onto body surfaces or viscera, or between intestinal loops. 