Histological Classification of Ovarian Tumours -- Definitions and Explanatory Notes -- Surface-Epithelial Stromal Tumours -- Sex Cord-Stromal Tumours -- Germ Cell Tumours -- Gonadoblastoma -- Germ Cell-Sex Cord-Stromal Tumour of Non-gonadoblastoma Type -- Tumours of Rete Ovarii -- Mesothelial Tumours -- Tumours of Uncertain Origin and Miscellaneous Tumours -- Gestational Trophoblastic Disease -- Soft Tissue Tumours Not Specific to Ovary -- Malignant Lymphomas, Leukaemias and Plasmacytoma -- Unclassified Tumours -- Secondary (Metastatic) Tumours -- Tumour-like Lesions -- TNM Classification of Tumours of the Ovary -- Illustrations