these results suggest that ( a ) endoscopic sphincterotomy is a very effective procedure in long-term follow-up , ( b ) cholangiography should be done at the appearance of slight abdominal symptoms even after 3 years , ( c ) patients who have ever reformed stones should undergo cholangiography yearly for at least 4 years , and ( d ) cholecystectomy is recommended for patients with gallbladders after sphincterotomy , only if gallstones are present .
C0006736
stones
C0008350
gallstones