Late effects of thorotrast in cerebral angiography.

A follow-up study of part of about 1000 cases which received Thorotrast injections during the years 1932-- 1947 is reported. Special attention was paid to the appearance of maligancies and the consequences of extravascular deposits of Thorotrast. About half the cases that received extravascular deposits developed severe late complications. Six cases of the total material had hepatic tumors, the incidence apparently being related to the amount of Thorotrast injected. (auth)