The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 10-year-old boy is brought to the physician because of a generalized, non-itchy rash for 2 days. He has also had a fever and sore throat for 4 days. He has not received any routine childhood vaccinations. Examination shows a flushed face except around his mouth. A diffuse, papular, erythematous rash that blanches with pressure is seen over the trunk. Pharyngeal erythema and a red beefy tongue are noted. His leukocyte count is 11,200/mm3 (75% segmented neutrophils, 22% lymphocytes). Without treatment, this patient's current condition puts him at greatest risk for which of the following complications?   (A) Coronary artery aneurysms   (B) Encephalitis   (C) Mitral valve regurgitation   (D) Minimal change disease
['(C) Mitral valve regurgitation <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Coronary artery aneurysms \n (B) Encephalitis \n (C) Mitral valve regurgitation \n (D) Minimal change disease <> possible answers', "  A 10-year-old boy is brought to the physician because of a generalized, non-itchy rash for 2 days. He has also had a fever and sore throat for 4 days. He has not received any routine childhood vaccinations. Examination shows a flushed face except around his mouth. A diffuse, papular, erythematous rash that blanches with pressure is seen over the trunk. Pharyngeal erythema and a red beefy tongue are noted. His leukocyte count is 11,200/mm3 (75% segmented neutrophils, 22% lymphocytes). Without treatment, this patient's current condition puts him at greatest risk for which of the following complications? <> context@"]