<prompt> Anitschow cells are ?Modified macrophagesModified neutrophilsModified B cellsModified RBCs  <response>: Ans. is a i.e., Modified macrophagesPathologic Features of Acute Rheumatic Fever :?Aschoff bodiesFocal inflammatory lesions consisting of foci of T lymphocytes, occasional plasma cells, and plump activated macrophages.These activated macrophages called Anitschkow cells pathognomonic for Rheumatic Fever have abundant cytoplasm and central round-to- ovoid nuclei occasionally binucleate in which the chromatin condenses into a central, slender, wavy ribbon hence also called caterpillar cells.Pancarditis - During acute RF, diffuse inflammation and Aschoff bodies may be found in any of the three layers of the hea, resulting in pericarditis, myocarditis, or endocarditisVerrucae are small 1 to 2 mm vegetations overlying necrotic foci and along the lines of closure of valves.MacCallum plaques are irregularly thickened subendocardial lesions usually in the left atrium.Mitral stenosis Fish Mouth or Button - Hole stenosis. 