Radiologic findings of Total Colonic Aganglionosis (T.C.A.) were analized in 15 patients with the results as follows; 1. Male to female ratio was 8:7. 2. There were six cases of small calibered colon, seven cases of normal colon and two cases of megacolon. 3. Free reflux of barium into the small bowel was observed in seven cases out of eight in which retrograde filling was tried. 4. Delayed films (24hrs or more) were available in eight cases and most of the barium remained in bowel in six cases. 5. There were abnormal colonic cotractions in three cases, decreased redundancy in five and five cases of irregular, hypertrophic mucosal wall suggesting enterocolitis. 6. Part of ileum were also aganglionic in five cases. There seems to be no pathognomonic barium enema findings in T.C.A.. But combination of these findings may suggest the possibility of T.C.A. T.C.A. should be considered in differential diagnosis of bowel obstruction in infants. Barium enema should be complete and dela ed films always be obtained.