Chorioangioma is the most common benign tumour of the placenta. Smaller lesions are asymptomatic but larger lesions are associated with adverse prognosis. Antenatal ultrasonography with colour Doppler is the primary modality in diagnosing these lesions and their complications. Chorioangiomas are generally associated with polyhydramnios but can rarely present with oligohydramnios. We report a case of a large chorioangioma, which led to oligohydramnios, compromised fetal blood flow and reduced fetal growth. A live infant weighing 830 g was delivered by Caesarean section at 34 weeks but survived for only two days.
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