A. Transaxial gray-scale sonographic image of the chest in
a 32-week-old fetus. The obliquely oriented stomach (St) contacts neither the
anterior nor posterior chest walls and remains entirely within the mid portion
of the left chest. Heart (Ht), spine (Sp).
B. Transxial gray-scale sonographic image of the chest in
a 20.7-week fetus. Herniated stomach (St) contacts the posterior wall of the
left chest. Heart (Ht), spine (Sp).