[Intestinal tuberculosis. The radiologic aspects of a disease not to be overlooked].

Intestinal tuberculosis still exists in the Western world, where it is usually underestimated and often mistaken for Crohn's ileo-colitis or cancer. The authors report the results of 4 cases of intestinal tuberculosis observed between 1983 and 1988. The cases are discussed in the light of the epidemiological data emerging from a review of recent medical literature. The danger is that the disease, which is endemic in Asian and African regions, may spread again in the Western world fostered by intensifying migrations of people and by the spreading of AIDS. According to recent experience, a negative chest film and Mantoux skin-test no longer have a negative predictive value for intestinal tuberculosis. In the radiological differentiation from Crohn's disease it is useful to keep in mind some topographic features of TBC: the systemic non-discontinuous involvement of both sides of ileocecal junctions; the unusual presence of ileal lesions, with no cecal lesions, and localizations below the transverse colon. Useful differential morphological criteria can be: star-like or transverse ring-shaped profile of isolated ulcerations, tubular ileocolic junction with retracted cecum and open valve, and uniformity of lesion in the comprehensive picture of the clinical case.