Saw tooth appearance on barium study is seen in
Diveiculosis Saw-tooth appearance to the colon, usually sigmoid, with shoening of the bowel, crowding of haustra and picket-fencing of folds Ischemic colitis - thumb printing sign.
Intussusception
Ileocecal TB
Ischemic colitis
Diveiculosis
Gastrointestinal Radiology