<prompt> Comb sign in CT abdomen is seen in:Crohns diseaseUlcerative colitisTuberculosisIntestinal lymphoma  <response>: CT finding in Crohns disease: Mural thickening with stratification is seen with active inflammation Vascular engorgement of the mesentery comb sign Hypodense lymph nodes CT findings in intestinal tuberculosis: Mural thickening with contiguous ileo-cecal involvement Hypodense lymph nodes with peripheral enhancement Ref: World J Gastroenterol. 2011 January 28; 174: 433-443. 