Epignathus (congenital teratoma of the hard palate): a case report.

A rare case is described of congenital teratoma protruding from the mouth (epignathus) attached to the hard palate in an infant of 3 days. Typical teratoma components and brain tissue were noted. A description of the relevant clinical and pathological features is given and the embryological basis for the aetiology of the lesion is discussed. The literature is reviewed.