question: Q:A previously healthy 33-year-old woman comes to the emergency department 1 hour after falling from a ladder. She is conscious. She does not smoke, drink alcohol, or use illicit drugs. There is no family history of serious illness. Her pulse is 72/min, respirations are 17/min, and blood pressure is 110/72 mm Hg. Physical examination shows ecchymosis and point tenderness over the right clavicle. An x-ray of the chest shows a nondisplaced fracture of the midshaft of the right clavicle and a 3.5-mm pulmonary nodule in the central portion of the left upper lung field. No previous x-rays of the patient are available. The fracture is treated with pain management and immobilization with a sling. A CT scan of the chest shows that the pulmonary nodule is solid and has well-defined, smooth borders. Which of the following is the most appropriate next step in management of this patient's pulmonary nodule?? 
  {'A': 'Reassurance', 'B': 'Follow-up CT scan of the chest in 6–12 months', 'C': 'Follow-up x-ray of the chest in 6–12 months', 'D': 'CT-guided transthoracic biopsy', 'E': 'Bronchoscopy with biopsy'},