Histologic Types of Ovarian Tumors in Maharaj Nakorn Chiang Mai Hospital

Abstract

Based on histopathologic study, the relative frequency of ovarian tumors in Maharaj Nakorn Chiang Mai Hospital from January to December 1993 was analysed. Among 221 cases, 212 were primary neoplasms. Mature cystic teratoma was most commonly encountered (34%), followed by mucinous cystadenoma (19%) and serous cystadenoma (10%). For each histogenetic group, 51% of all primary tumors were common epithelial tumors, 7% were sex cord stromal tumors, and 41% were germ cell tumors. In contrast to reports from western countries, mucinous tumor was more common than serous type with a ratio of 1.9:1 for benign group and 14:1 for borderline group. The relative frequency of granulosa cell tumor and malignant germ cell tumor was also higher than that of western countries. (Thai J Obstet Gynaecol 1995;7: 41-49.)