RESUMO
The objective was to determinate the diagnostic value of manual vacuum aspiration with Karman cannula (MVA) for the detection of endometrial hyperplasia and cancer in patients with abnormal uterine bleeding. Fifty patients with abnormal uterine bleeding were evaluated with MVA prior to dilatation and curettage (D&C). The needing of cervical dilatation was noted. A matched analysis of the histological reports with Wilcoxon contrast test was performed. In order to calculate the diagnostic value, the histological examination of the tissue recollected by D&C was defined as gold-standard. Sensitivity, specificity, pre-test probability (prevalence), post-test probabilities (predictive values) and likelihood-ratios were calculated. No significant difference between either histological reports in matched analysis and the insufficient samples proportion was detected. Cervical dilatation was performed more frequently to D&C (p = 0.0002). The pre-test probability (prevalence) of endometrial hyperplasia/cancer was 20%. Two cases of hyperplasia were not detected by MVA (negative false 20%). The endometrial biopsy for MVA showed a sensitivity of 71% and specificity 93%. The post-test probabilities for an abnormal and normal biopsy (positive and negative predictive values) were 62.5% and 95.2%, respectively. The corresponding likelihood-ratios were 10.23 and 0.3, respectively. The endometrial biopsy for MVA has a high diagnostic value, similar to D&C, in the detection of endometrial hyperplasia/cancer in patients with abnormal uterine bleeding with the advantage to be an office procedure without either risks and costs of D&C.