Peters NCJ, Hijkoop A, Hermelijn SM, et al. - In the present study, the researchers sought to identify prenatal predictors for the need for postnatal respiratory support and surgery in fetuses with a congenital lung malformation (CLM) by calculating the CLM volume ratio (CVR), as well as to assess concordance between prenatal appearance and postnatal type of CLM. All fetuses included (2007‐2016) had an ultrasound CVR measurement at 20‐24 (US1), 24‐30 (US2), and/or 30‐36 (US3) weeks of gestation. Of 80 fetuses, on the first postnatal day, fourteen (18%) needed respiratory assistance, and 17 (21%) required surgery within 2 years. The CVR forecasts the need for respiratory assistance and surgery. Prenatal regression of CLM does not rule out post-birth respiratory issues.