Ahhh placental lakes ni memang common lah, jangan worry sangat! Aku tak pernah dengar ada jalan nak "kurangkan" dia, biasanya ia just part of how placenta develop, and most of the time baby fine je. Best thing is tanya doctor your next scan to check how baby is doing and make sure everything else looks good, because that's really what matters more than the lakes themselves. Banyak mum friends aku ada jugak and their babies lahir sihat-sihat, so try not to stress too much about this one, ok?