Placental chorioangiosis along with chorioangioma and chorioangiomatosis constitute a spectrum of overlapping villous capillary lesions, considered to result from hypoxia. Chorioangiosis vary in its histological features, gestational age at presentation and associated maternal conditions from chorioangioma and chorioangiomatosis (which have much in common). Chorioangiosis is an under studied, but important entity because of its significant association with poor neonatal outcome and major congenital malformations. The etiology remains uncertain with chronic low-grade hypoxia resulting from various reasons, being the possible cause. Many placental conditions are associated with chorioangiosis, we report a case of chorioangiosis in placenta previa. The fetus had a major defect in occipital bone with encepalocele. There is a need to advance studies focusing on placental chorioangiosis to better proximate the causes of this placental injury and to define its associated feto-maternal disorders.
Key words: Fetal encephalocele, Placental chorioangiosis, Placenta previa, Uterine hypoxia
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