TNM classification of gynaecological malignant tumours, eighth edition: Changes between the seventh and eighth editions

The staging classification of gynaecological malignancies has been revised by the International Federation of Gynecology and Obstetrics (FIGO) and has been subsequently reviewed by the FIGO Committee on Gynecologic Oncology, the International Union for Cancer Control TNM Committee and the American Joint Committee on Cancer. The major change in the eighth edition of TNM classification of gynaecological malignant tumours is integrated staging for ovarian, fallopian tube and primary peritoneal carcinoma, whereas the seventh edition distinguished 'ovary and primary peritoneal carcinoma' and 'Fallopian tube carcinoma'. Furthermore, the new edition describes a prognostic factor grid for vulvar, cervical, endometrial and ovarian, fallopian tube and primary peritoneal carcinoma. If these factors contribute strongly to the prognosis, they may be incorporated into future staging classifications. This paper reviews the staging system for gynaecological malignancies, how it was developed, and current problems to be resolved.