Crohn's disease is a 55% chance the other will too. The incidence of Crohn's disease is increasing in Europe and in newly industrialised countries. For example, in Brazil, there has been an annual increase of 11% in the incidence of Crohn's disease since 1990. Inflammatory bowel diseases were described by Giovanni Battista Morgagni (1682–1771) and by Scottish physician T. Kennedy Dalziel in 1913. "Ileitis terminalis" was first described by Polish surgeon Antoni Leśniowski in 1904, although it was not conclusively distinguished from intestinal tuberculosis. In Poland, it is still called Leśniowski-Crohn's disease (). Burrill Bernard Crohn, an American gastroenterologist at New York
Extrapulmonary tuberculosis in the liver or spleen, splenomegaly, splenic or lymph node calcification, inflammatory thickening of the terminal ileum and caecum, patulous I-C junction and lowattenuation lymphadenopathy may help suggest tuberculosis as the etiology of diffuse peritoneal disease. Like tuberculosis, Crohn‟s disease also can result in granulomatous peritonitis13. Smooth and regular peritoneal thickening is more in favor of granulomatous peritonitis. Extrapulmonary tuberculosis Extrapulmonary tuberculosis is tuberculosis (TB) within another location in the body than the lungs. This occurs in 15–20% of active cases, causing other kinds of TB. These are collectively denoted as "extrapulmonary tuberculosis". Extrapulmonary TB occurs more commonly in immunosuppressed