Polycythemia vera associated with Ushers's symdrome

A 50-year-old man with Usher's syndrome, progressive retinitis pigmentosa, and congenital sensoneural deafness developed polycythemia vera. Usher's syndrome was associated with a variety of congenital herediatry disorders but there was no evidence to support more than a chance association between Usher's syndrome and polycythemia vera.