USMLE® Step 1 style questions USMLE
USMLE® Step 2 style questions USMLE
A 38-year-old woman, gravida 3, para 2, comes to the office for a first trimester ultrasound examination which shows a 15 mm fluid-filled sac in the left posterior triangle of the neck of the fetus. The structure has multiple septae, as shown in the ultrasound image below.
Which of the following conditions is most likely to be associated with this ultrasound abnormality?