July 12, 2026 · Prenatal diagnosis · DOI: 10.1002/pd.70222

Lung Size Measurement in Left-Sided Congenital Diaphragmatic Hernia: Does Position of the Fetus Affect Results?

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The authors aimed to determine how fetal position affects lung size measurements in fetuses with left-sided congenital diaphragmatic hernia (L-CDH) by comparing the observed/expected lung-to-head ratio (O/E-LHR) in two different positions. Their findings indicate that lung size is consistently underestimated when the lung is positioned away from the ultrasound probe, which may lead to misclassification of severity and lower predicted survival rates. This suggests that fetal position should be considered when assessing lung size to improve prognostic accuracy and treatment decisions.

Rogelio Cruz-Martínez, Paola Rivera-Carrillo, Rosa Villalobos-Gómez, Andrea Peláez-Jiménez, Adriana Cisneros-Martínez, Savino Gil-Pugliese, Saulo Molina-Giraldo

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