First-trimester cystic hygroma: prenatal diagnosis and fetal outcome
Cystic hygroma is a congenital lymphatic malformation frequently diagnosed during first-trimester ultrasound screenings. This anomaly, characterized by cystic masses typically found in the cervical and thoracic regions, poses significant challenges due to its association with chromosomal abnormalities, notably trisomy 21. We present a case study of a 32-year-old primigravida at 11 weeks of gestation diagnosed with a cervico-thoracic cystic hygroma measuring 4.5 mm in nuchal thickness, confirmed by Doppler ultrasound.