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Second- and third-trimester ultrasound findings in 22q11.2DS. (A) Tetralogy of Fallot, overriding aorta (arrow), (B) normal thymus, (C) hypoplastic thymus, (D) normal cavum septi pellucidi (CSP), (E) enlarged CSP, (F) talipes equinovarus (arrow), (G) profile with bulbous nose, (H) face with bulbous nose, (I) small ear with thickened overfolded helix. (B through E—areas of interest are indicated by calipers).
