Giant chorioangioma of placenta: an infrequent placental cause for adverse feto-maternal outcome

Chorioangioma is a relatively rare benign tumor of placenta arising from chorionic tissue, with incidence being 1 in 100 cases. Giant vascular chorioangiomas render a challenge to obstetricians with their potential critical complications adversely altering feto-maternal outcome. Diagnosis is suspected antenatally by ultrasound and Doppler studies, and is corroborated by histopathology post-delivery. Here we report a pregnancy complicated by a giant placental chorioangioma with polyhydraminos in a young mother, diagnosed prenatally, and associated with deranged liver function tests, culminating into a preterm delivery of a plethoric stillborn fetus, followed by lifethreatening postpartum hemorrhage in mother. Also clinical considerations and relevant literature review on prognostic factors affecting obstetric outcome are addressed. A case of giant chorioangioma placenta warrants close antenatal surveillance and institutional delivery as it may have untoward maternal complications as was seen. Vascularization of tumor is a pivotal determining factor of pregnancy outcome.