starting from a discussion of the controversial views on the indications and correct execution of papillosphincteroplasty ( psp ) , the authors report their own experience with the procedure and their first-hand evaluation of its merits , based on a series of 77 patients treated by psp over the last 3 years ( out of a total of 650 patients treated surgically for nonneoplastic pathology of the biliary tract ) .
C0184661
procedure
C0543467
surgically