in a retrospective three year study 13 cases of xanthogranulomatous cholecystitis ( xgc ) ( seven female , six male ) were found in 724 gallbladders ( 1.8 % ) , an estimated incidence of 1.7 cases per 100,000 population per annum .
C1337035
xanthogranulomatous
C0016976
gallbladders