Endometrial development in the luteal phase of women with various types of infertility: comparison with women of normal fertility

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Abstract
In this study, the prevalence of retarded endometrial development in the luteal phase of an infertile population (20/142=14%) was found to be significantly higher (PP<0.01 in both cases) than women with normal fertility; whereas the prevalence in women with tubal or male infertilIty (1/34=2.9% and 3/39=7.7%, respectively) was not significantly different from that in the fertile subjects. There were no significant differences in the progesterone profiles of the four groups of infertile subjects and the group of fertile subjects. Of the 15 cases of retarded endometrial development with known progesterone profile, two were associated with subnormal progesterone whereas the remaining 13 were associated with normal progesterone, the lauer suggesting an abnormal response of the endometrium to a normal amount of progesterone. The findings suggest that further morphological study of the endometrium should be aimed at subjects whose infertility is unexplained or associated with endometriosis, in whom the prevalence of abnormal endometrium is increased.

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