Trisomy 18: a new screening ultrasonographic sign (finger pointer)

Abstract

A new ultrasound sign observed in a 22-week fetus with trisomy 18 or Edwards syndrome, consisting of permanent hyperextension of both index fingers (sign named “pointer finger”), and associated with arthrogryposis of wrists is reported. The relevance of this finding is that it could be recognized as another marker in the screening for this disease.