Pendred syndrome is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH) in the United States of America.Pendred syndrome is characterized by the association of congenital bilateral neurosensory deafness, thyroid goiter, cochleovestibular malformation and potential vestibular dysfunction. Incidence ranges between 1/100,000 and 10/100,000 bir...