[Benign stenosis of Vater's ampulla].

The classification of benign stenosis of Vater's ampulla is explained and reference is made to 5 years' experience in this field. The preoperative diagnosis of this condition is discussed and an account is given of the results obtained and the postoperative course. Attention is drawn to the very low incidence of postoperative pancreatitis with respect to the surgical methods employed. This incidence is evaluated in the conclusions reached.