What is the meaning of decidual reaction?
What is the meaning of decidual reaction? A decidual reaction is a feature seen in very early pregnancy where there is thickening of the endometrium around the gestational sac. A thin decidual reaction of less than 2 mm is considered one of the features suggestive of an anembryonic pregnancy 2. What are decidual cells histology? The decidua has a histologically-distinct appearance, displaying large polygonal decidual cells in the stroma. These are enlarged endometrial stromal cells, which resemble epithelium (and are referred to as "epithelioid"). Vascularity, as well as vascular permeability, is enhanced in the decidualizing endometrium. Is decidual reaction normal?...