A Clinicopathologic Analysis of Decidual Polyps: A Potentially Problematic Diagnosis

Figure 3

Hematoxylin and eosin staining (100×) of the decidual polyp shows the following: (a) in the first trimester, the glands show the Arias-Stella reaction with vacuolated cytoplasm and enlarged, irregular, hyperchromatic nuclei, while the stroma cells show edema and mild decidual change, and the spiral arteries proliferate; (b) in the second trimester, the gland secretions are exhausted with single-layer cuboidal epithelium, and the stroma cells show prominent decidua change with abundant pink cytoplasm and well-defined cellular borders; (c) in the third trimester, the gland secretions exhausted and extremely atrophic with single-layer flattened epithelium, and the stroma cells show edema and prominent decidual change; (d) an endometrial polyp subtype; (e) superficial erosion. (f) Acute inflammation with neutrophil granulocytes; (g) hemorrhage; (h) thrombus; and (i) necrosis.

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