In a retrospective study to determine the accuracy of frozen section diagnosis in gynecologic tumors, the results of consecutive frozen section diagnosis of 73 gynecologic tumors from May 1993 through Dec. 1995 were compared with the final diagnosis. The accuracy of frozen section diagnosis of gynecologic tumor were 94.5% and inaccuracy were 5.5%. Inaccuracy(5.5%) were due to limited sampling for frozen section. We therefore suggest that careful examination with sampling of any suspicious lesions be carried out at the time of surgery for patients with benign frozen section diagnosis, since this may avoid a second staging laparotomy, if the final diagnosis is malignant.