Polydactyly and syndactyly can be normal variants or may be associated with a syndrome.  This case demonstrates a pre-axial (i.e. radial) extra digit, which is the less common than post-axial (i.e. ulnar) polydactyly. The patient had an otherwise normal physical exam, indicating that this was an isolated case and not associated with another anomaly or syndrome.

This case was submitted with supervision and input from:

Soni C. Chawla, M.D.
Associate Professor
Department of Radiological Sciences
David Geffen School of Medicine at UCLA
Olive View - UCLA Medical Center