Eligible cases

distribution

Number (%)

Cholelithiasis incidence before surgery

Prior cholecystectomy

13 (9.6%)

35 (25.9%)

Concomitant cholecystectomy

22 (16.3%)

Free of gallstone at time of surgery

Developed gallstones

symptomatic

8 (8%)

19 (19%)

Non symptomatic

11 (11%)

Did not develop gallstones

81 (81%)

total

135