The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 5-month-old boy is brought to the physician with a 3-day history of fever and cough. His mother reports that he has had multiple episodes of loose stools over the past 3 months. He has been treated for otitis media 4 times and bronchiolitis 3 times since birth. He was born at 37 weeks' gestation, and the neonatal period was uncomplicated. He is at the 10th percentile for height and 3rd percentile for weight. His temperature is 38.3°C (100.9°F), pulse is 126/min, and respirations are 35/min. Examination shows an erythematous scaly rash over his trunk and extremities. The white patches on the tongue and buccal mucosa bleed when scraped. Inspiratory crackles are heard in the right lung base. An X-ray of the chest shows an infiltrate in the right lower lobe and an absent thymic shadow. Which of the following is the most likely definitive treatment for this patient’s condition?   (A) Hematopoietic cell transplantation   (B) Intravenous immune globulin   (C) Leucovorin supplementation   (D) Thymic transplantation
['(A) Hematopoietic cell transplantation <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Hematopoietic cell transplantation \n (B) Intravenous immune globulin \n (C) Leucovorin supplementation \n (D) Thymic transplantation <> possible answers', "  A 5-month-old boy is brought to the physician with a 3-day history of fever and cough. His mother reports that he has had multiple episodes of loose stools over the past 3 months. He has been treated for otitis media 4 times and bronchiolitis 3 times since birth. He was born at 37 weeks' gestation, and the neonatal period was uncomplicated. He is at the 10th percentile for height and 3rd percentile for weight. His temperature is 38.3°C (100.9°F), pulse is 126/min, and respirations are 35/min. Examination shows an erythematous scaly rash over his trunk and extremities. The white patches on the tongue and buccal mucosa bleed when scraped. Inspiratory crackles are heard in the right lung base. An X-ray of the chest shows an infiltrate in the right lower lobe and an absent thymic shadow. Which of the following is the most likely definitive treatment for this patient’s condition? <> context@"]