Endometrial hyperplasia is a condition of the endometrium characterized by exaggerated proliferation. This condition can affect the endometrium totally or focally, constituting the so-called endometrial polyps.
In any case, abnormal proliferation of endometrial tissue should be observed and even, occasionally, a biopsy recommended to rule out complex pathologies.
The endometrium is the biological tissue where the embryo will nest. For this reason, abnormal development of the same will generate an extremely hostile and inappropriate terrain for the pregnancy to take place.