VP22.18: Prenatal diagnosis of ostium secundum‐type interatrial communication: a case report. Issue Volume 58:Issue S1(2021)Supplement (14th October 2021) - Dias, J. Portela; Moreira, C.; Coroado, M.; Mota, M.; Braga, J.; Vila‐Cova, F.; Martins, L. Guedes