ASCOff'S bodies are seen in

Acute rheumatic fever is characterized by discrete inflammatory foci within a variety of tissues. The myocardial inflammatory lesions--called Aschoff bodies--are pathognomonic for rheumatic fever (Fig. 10-19, B); these are collections of lymphocytes (primarily T cells), scattered plasma cells, and plump activated macrophages called Anitschkow cells occasionally punctuating zones of fibrinoid necrosis. (Robbins Basic pathology,9th edition.pg no.391)