[en] The radiological characteristic features of Crohn's disease located in the small bowel are made up of three main syndromes. Prestenotic - involving the small bowel loops proximally to the pathological process. Strong peristalsis with retroperistalsis, along with fluid and mucus collection, intestinal lumen widening up to 3 - 6 am diameter and formation of gas fluid levels are observed. Stenotic - presenting irregularly narrowed section with rigid walls, uneven rough polymorphic contours with gradual transition to the other part of the intestine. Ulcero-polypoid syndrome mirroring changes in the small-bowel mucosa - longitudinal, circular and oval contrast material depots are seen - ulcer destructions. When fistulas are formed, long spicular added shadows appear along the contour. Not infrequently such fistulas communicate with other parts of gastrointestinal tract; large polymorphic clear zones are also visualized - pseudo polyps. The images observed upon fractionated contrast material passage are supplemented be computerized tomography and percutaneous abdominal sonography - the so called cockade symptom associated with thickening of the intestinal wall, mesenteric hypervascularization and the like. Enteroclysis which are method of choice is not used owing to technical reasons. (authors)