[Secondary non-Hodgkin's lymphoma of the small intestine. Double-contrast radiological study using oral enema].

The small bowel double contrast enema was performed in 44 patients with diffuse non-Hodgkin lymphoma. "Secondary" involvement of small bowel is detected in 14 subjects (31.8%), but radiographic features are not specific for the disease. Really, lymphoma and regional enteritis may demonstrate strikingly similar patterns. The signs we have considered are: intraluminal involvement, with narrowing or dilated segments; diffuse or localized polypoid lesions; large extraluminal masses. The roentgenographic pattern of the mucosal folds consists of thick, straight or tortuous folds, with "cogwheel" appearance and moderate dilatation of the lumen.