This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pathology
[{'content': 'Libmann sacks endocarditis is associated with? \nSelect and explain. \nA. SLE, B. NBTE, C. Rheumatic, D. Fungal', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Libman-Sacks endocarditis is characterized by the presence of sterile vegetations on the valves of patients with systemic lupus erythematosus. The lesions probably develop as a consequence of immune complex deposition and thus exhibit associated inflammation, often with fibrinoid necrosis of the valve substance adjacent to the vegetation; subsequent fibrosis and serious deformity can result in lesions that resemble chronic rheumatic hea disease. (Robbins Basic Pathology,9th edition,pg no.395)', 'role': 'assistant'}]