RESUMEN
To evaluate the causes of abnormal uterine bleeding in perimenopausal women and to achieve the greatest diagnostic accuracy with the least risk, a cross-sectional study was done among 85 patients between the ages 40 and 55 years. Transvaginal sonography, hysteroscopy and histopathological examination of endometrium were done in all the cases. Kappa statistics was calculated to show the agreement between the different investigations. Considering histopathological report to be the gold standard, for diagnosis of hyperplastic endometrium, transvaginal sonography and hysteroscopy showed fair agreement (k=0.34) and good agreement (k=0.51) and hysteroscopic diagnosis of polyp showed strong agreement (k=0.81). Sensitivity, specificity, positive predictive value, negative predictive value for diagnosis of hyperplastic endometrium were 43.75%, 95.65%, 70% and 88% respectively whereas in polyp by transvaginal sonography they were 50%, 89.16%, 100%, 98.67% respectively; by hysteroscopy these were 50%, 95.78%, 70%, 90.36% respectively in hyperplasia and 71.43%, 100%, 100%, 94.67% respectively in polyp. Transvaginal sonography is most important for diagnosis of anatomical lesion. Hysteroscopy is most specific and sensitive for diagnosis of polyp but less specific for endometrial hyperplasia.