Comb sign in CT abdomen is seen in:
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; 17(4): 433-443.
Crohns disease
Ulcerative colitis
Tuberculosis
Intestinal lymphoma