Scalloping of edge of sigmoid colon on barium enema is seen in:
Ans.C. Ulcerative colitisExplanationFeatures of ulcerative colitis on barium enema are as follows:Acute ulcerative colitisChronic ulcerative colitis*. Fine mucosal granularity (due to edema)*. Scalloping of edges of colon, especially sigmoid colon*. Collar button ulcers*. Pseudopolyps*. Toxic megacolon*. Lead pipe colon due to loss of haustrations*. Shortened and narrowed colon*. Backwash ileitis*. Thickened rectal valve*. Widened presacral space (>1.5 cm at S4 vertebral level)*. Benign stricture*.Colorectal carcinomaSign seen on barium enema in other options given in question is as follows:(Option a) Pseudomembranous colitis -->> ' Accordion sign'.(Option b) Intussusception ->> Tincer sign'.(Option d) Ischemic colitis --> 'Thumb printing sign'.Scalloping of edge of sigmoid colon can also be seen in cases of large pelvic masses or pseudomyxoma peritonei causing extrinsic compression on sigmoid colon.
Pseudomembranous colitis
Intussusception
Ulcerative colitis
Ischemic colitis
G.I.T.