This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiac and Pericardiac Imaging, Subject name: Radiology
Diagnostic feature of RHD is : 
Select and explain. 
A. McCallam patch, B. Aschoff nodules, C. Shaggy vegetations, D. Bread butter pericarditis
B: Aschoff nodules
Answer: B: Aschoff nodules 
Explanation: Ans. is 'b' i.e. Aschoff nodules Aschoff nodules are focal inflammatory lesions found in any of the three Layers of the heart. They are characteristic of acute rheumatic fever.Aschoff nodules consist ofFibrinoid necrosis*Aschoff giant cells *Histiocytes*Plasma cells*Lymphocytes*Fibroblast*Collagen*