Malignant transformation in mature cystic teratoma of the ovary: report of five cases and review of the literature

Abstract

The incidence of malignant transformation in mature cystic teratoma (MCT) of the ovary is less than 2% as reported in gynaecological and pathological literature. Here we present a series of five patients, who developed malignant transformation in MCT of the ovary, over a 6-year period (1999-2004). The morphological and clinico-pathological features of malignant transformation in MCT of the ovary are discussed.