Case of the Week #640

Lech Dudarewicz (1), Beata Rebizant (2), Javier Cortejoso (3)
(1) Polish Mother's Research Institute, Department of Genetics; (2) Department of Obstetrics, Perinatology and Neonatology, Centre of Postgraduate Medical Education, Bielański Hospital, Warsaw, Poland; (3) Centro Médico Recoletas, Valladolid, Spain

Posting Dates: Nov 15, 2025 - Nov 30, 2025

A 33-year-old nullipara with non-contributory medical history presented at 20 weeks, 6 days based on an early scan. Ultrasound revealed the following findings. There were no other apparent abnormalities. What is the most probable diagnosis?

Image 1
Video 1 © 2025 Lech Dudarewicz
Image 2
Video 2 © 2025 Lech Dudarewicz
Video 3 © 2025 Lech Dudarewicz
Video 4 © 2025 Lech Dudarewicz

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