Heart-hand syndrome type 3

Definition

A rare multiple congenital anomalies/dysmorphic syndrome characterized by cardiac conduction defect (sick sinus, bundle-branch block) and brachydactyly, affecting principally the middle phalanges of both hands, in conjunction with an extra ossicle on the proximal phalanx of both index fingers. Feet abnormalities are more subtle. There have been no further descriptions in the literature since 1980.