Table 1

 Functional, diagnostic, and therapeutic aspects of the endometrial intraepithelial neoplasia (EIN) classification

EIN nomenclatureTopographyFunctional categoryTreatment
Benign architectural changes of unopposed oestrogens (endometrial hyperplasia)DiffuseOestrogen effectHormonal treatment
EINFocal, later diffusePrecancerHormonal or surgical
CarcinomaFocal, later diffuseCancerSurgical, stage based