Objective: To detect post mortem changes in fetal hematopoiesis consistent with infection from liver examination alone.
Study Design: We investigated the immunohistochemical expression of Glycophorin C, Neutrophilic elastase, and CD34, in the hepatic parenchyma from fetuses miscarried as a result of chorioamnionitis (caused by Chlamydia trachomatis) and correlated them with the equivalent from fetuses after voluntary abortion (gestational age: 16th, 20th, and 24th weeks).
Results: A statistically significant difference was found in the Neutrophilic elastase positive cells to the advantage of cases with chorioamnionitis over voluntary abortions (24th week: P=0.0001, t-test) and also at the level of total hematopoiesis (20th and 24th week: P=0.041 and 0.004, respectively, t-test). There was no quantitative difference between the two settings at the level of erythropoiesis in the three examined periods.
Conclusions: Fetal infection can be diagnosed from the liver alone. After detection of changes in fetal hematopoiesis indicative of infection, examination of additional specimens of placenta and membranes will document the diagnosis of chorioamnionitis.
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