[Histopathological correlation of biopsy of the endometrium between Novak's catheter and curettage]. / Correlación histopatológica de la biopsia de endometrio entre cánula de Novak y legrado biopsia.

It was accomplished a longitudinal retrospective and comparative study in the General Hospital Tacuba of the ISSSTE, From 1 July 1995 to the 30 of June of 1996, in order to determine the sensibility and specificity of the diagnosis obtained by means of Novak's cannula and the curettage, comparing them with the result obtained in the hysterectomy. From 194 hysterectomies performed in that period, 69 patient were excluded remaining 125 patient. We correlated the results from both methods with the results of the histological study of the uterus gotten by hysterectomy. It was found for the biopsy taken by Novak's cannula a specificity and sensibility of the 75% and for the curettage a sensibility of 63.26% and specificity of 65.30%, being a difference not meaningful for the sensibility as for the specificity between both methods (p > 0.01). Having a smaller mistake range when were tried to proliferative o secretor endometry, not thus when existed simple hyperplasia or with atypical endometrial hyperplasia. We concluded that both methods are equally useful for the study of the endometrial pathology.