Three‐dimensional prenatal diagnosis of frontonasal malformation and unilateral cleft lip/palate

Frontonasal malformation includes a spectrum of anomalies involving the eyes, nose, lips, forehead and brain. We present a case in which a fetal labial cleft was initially identified using traditional two‐dimensional sonography. Three‐dimensional sonography with multiplanar reconstruction and surface‐rendering were essential to establish the diagnosis of frontonasal malformation with severe nasal hypoplasia and unilateral complete cleft lip/palate.