“…A further point in favour of the unitarian view is the high incidence of intracardiac thrombosis and embolism both in Loffler's disease with eosinophilia and in the disease which Becker described without eosinophilia. While embolism does occur in endomyocardial fibrosis (Shaper and Wright, 1963;Owor, 1973) it is fairly rare perhaps because the earlier stages of the disease are not recognised (Patel et al, 1977). The apparent difference may be related to the lesser aggressiveness and greater chronicity of the process at the stage of endomyocardial fibrosis.…”