title: [Double contrast studies of the small intestine. How, when, why].
abstract: The double contrast radiological technique involving duodenal intubation for the examination of the small intestine is described. The technical difficulties involved are discussed with ample illustration. This forms the basis for suggestions on the main indications for the technique in a correct diagnostic protocol.
mesh_terms: D000328:Adult; D003287:Contrast Media / Q000008:administration & dosage; D003424:Crohn Disease / Q000000981:diagnostic imaging; D004379:Duodenal Neoplasms / Q000000981:diagnostic imaging; D004386:Duodenum; D005260:Female; D006801:Humans; D007410:Intestinal Diseases / Q000000981:diagnostic imaging*; D007414:Intestinal Neoplasms / Q000000981:diagnostic imaging*; D007421:Intestine, Small / Q000000981:diagnostic imaging; D007441:Intubation, Gastrointestinal; D007580:Jejunal Neoplasms / Q000000981:diagnostic imaging; D007889:Leiomyoma / Q000000981:diagnostic imaging; D008223:Lymphoma / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D011859:Radiography; D014385:Tuberculosis, Gastrointestinal / Q000000981:diagnostic imaging
chemical_list: D003287:Contrast Media
vernacular_title: L'indagine "a doppio contrasto" del tenue. Come, quando, perché.