Chromosome changes in subacute sclerosing panencephalitis.

: In two out of a total of 6 cases of subacute sclerosing panencephalitis with manifest chromosome alterations, chromosome studies were repeated 4 and 5 years of standing, respectively, after manifestation of the disease. In one case the incidence of chromosome alterations increased while in the other no change was found. Both cases were clinically similar in their history with remission.