Chorangiomas are a rare benign non-trophoblastic neoplasms of the placenta. Small sized chorangiomas often go undetected with uneventful pregnancy. However large sized chorangiomas, which if undiagnosed antenatally can cause adverse fetomaternal effects. We present a case of giant chorangioma which was undetected antenatally resulting in acute hydramnios and fetal hydrops leading to preterm labour and causing neonatal death. A review of literature is done with emphasis on use of colour Doppler ultrasound as a diagnostic modality and a conclusion that timely diagnosis, active surgical intervention could have prevented this fatal outcome.
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