[Radiology of tumours of the region of the ampulla of Vater (author's transl)].

On the basis of 18 personal cases, the authors discuss the different radiological appearances of tumours of the ampulla of Vater region. After a review of the histopathological aspects, they attempt to separate the respective indications for the various endoscopic and radiological studies possible, stressing the importance of duodenoscopy. They give an illustrated classification of the different appearances seen.