OBJECTIVE:

To determine the sensitivity and specificity, predictive value positive and negative and estimate the correlation coefficient between hysteroscopy and endometrial histopathological outcomes in patients with abnormal uterine bleeding.

MATERIALS AND METHODS:

Descriptive, observational, a series of consecutive cases was performed at the Hysteroscopy Clinic of the "Hospital Integral de la Mujer del Estado de Sonora” were included with abnormal uterine bleeding. The hysteroscopy and histopathological findings of the endometrial alterations were classified. In order to calculate the sensitivity and specificity of the hysteroscopy, the patients were grouped into two categories: normal endometrium (healthy women) and abnormal endometrium (patients with endometrial polyp, submucous myoma, adenomyosis, endometrial hyperplasia, endometrial cancer, among other alterations). Statistical analysis was performed using the SPSS program V. 22, for Windows 10.0; the sensitivity and specificity was calculated with 95% confidence intervals, the correlation coefficient was estimated by Pearson method.

RESULTS:

We registered 400 patients; the average age was 45.2 (±11.04). The most frequent diagnosis by hysteroscopy and histopathological was endometrial polyp. The sensitivity was 0.95 (95%CI = 0.93-0.97) and specificity of 0.85 (95%CI = 0.82-0.89) as cause of abnormal uterine bleeding by hysteroscopy, the positive predictive value was 0.97 95%CI = 95-98) and negative predictive value of 0.79%. (CI95% = 0.75-0.83). The Pearson correlation coefficient was 77.8% (p = 0.000) between hysteroscopy impression and histopathology diagnosis, when the result was classified as normal or abnormal.

CONCLUSION:

Hysteroscopy is a high sensitivity and specificity technique to diagnosis of benign and malignant endometrial alterations; in addition, an excellent correlation was observed between the hysteroscopy findings and the histopathological findings.