Morphology of Endometrial Scrapings in Early Spontaneous Abortions
Keywords:Spontaneous abortion, Endometrium, Morphology, Periodic acid–Schiff (PAS) reaction, Fetal membranes.
Objective: Study of morphological changes in the endometrium and fetal membranes during spontaneous
abortions in 9-12 weeks of pregnancy to clarify the etiopathogenetic mechanisms.
Materials and methods: Study material was endometrial scrapings with components of fetoplacental tissue
obtained after spontaneous abortions (176 cases) in 9-12 weeks of pregnancy, received at the Republican
Pathological Bureau from several City Maternity Hospitals of Bishkek (Kyrgyz Republic). The histological
sections were stained with hematoxylin and eosin (H&E), and a mixture of acid fuchsin and picric acid. The
Periodic acid–Schiff (PAS) reaction was performed.
Results: Of the 176 cases in 80 cases, by the medical reports, pregnant women had concomitant gynecological
infectious pathology in the form of chronic endometritis, chronic salpingoophoritis, chlamydia, colpitis, and
adnexitis. Histological examination revealed inflammatory changes in the form of deciduitis (24.5% of
cases), endometritis (20.5% of cases), villitis (17.3% of cases) in 70% of cases. Pathological changes in the
decidual membrane are determined as foci of leukocyte infiltration in 65% of cases, in 30% - foci of necrosis
and in 20% - foci of hemorrhage. In 60% of cases, as their combination.
Conclusion: Histological examination of endometrial scrapings and fetal membranes after spontaneous
abortions in 9-12 week pregnant women, with a history of infectious inflammatory pathology, revealed the
tissue inflammatory changes of varying severity, with the following additional microscopic characteristics:
the compact arrangement of endometrial glands, weak vascularization of villus chorion; sclerotic, dystrophic,
and necrotic changes with hemorrhages in the endometrium and decidual membrane.
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