the low mortality ( 0.4 per cent ) and good clinical results after colectomy and the ptr procedure and the unexpectedly high incidence of carcinoma and mucosal dysplasia among patients referred for operation suggest that surgical treatment should be considered at an earlier stage than the current general practice , particularly in patients at high risk ( mucosal dysplasia , pancolitis and duration of more than ten years ) .
C0184661
procedure
C0543467
surgical treatment