Abstract: | During 1948-1976, 363 cases of ovarian seroustumor were encountered in the hospital. Amongthem, 58 cases were pathologically compatiblewith the criteria of this tumor of borderline ma-lignancy proposed by the WHO classification. The purp8se of this paper is threefold: 1.To study the c!inical behavior and mode of de-velopment of pathologically documented bordcr-line malignant serous ovarian tumors. 2. Tocompare the difference between benign, border-line malignant and malignant serous tumors. 3.To assess the value of making such a "borderlinemalignant" subgroup. |