<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 34-year-old woman is brought to the emergency department following a motor vehicle accident. She was walking on the sidewalk when a car traveling at high speed knocked her off her feet. She did not sustain any obvious injury but has painful breathing. An X-ray of the chest is taken to exclude a rib fracture and contusion of the lungs. The X-ray is found to be normal except for a solitary calcified nodule located in the left hilar region. The physician then asks the patient if she is or was a smoker, or has any pertinent medical history to explain the nodule. Her past medical history is insignificant, including any previous lung infections. Physical examination does not reveal any significant signs indicative of a tumor. A chest CT is ordered and a solitary nodule of 0.5 cm is confirmed. Which of the following is the most appropriate next step in the management of this patient?? A: Positron emission scan, B: Mediastinoscopy, C: Sputum cytology, D: CT scan of abdomen, E: Repeat chest CT scan in 6 months,  <response>: This is a question about the appropriate next step in managing an incidentally found solitary pulmonary nodule in a patient with no significant risk factors. The key findings in the stem are a 34-year-old woman with no smoking history or other risk factors was found to have a 0.5 cm solitary pulmonary nodule on chest CT after a motor vehicle accident. The differential diagnosis for a solitary pulmonary nodule includes benign causes like granuloma as well as malignant causes like primary lung cancer or metastatic disease. In a low risk patient, the likelihood of malignancy is low. Per guidelines, the recommended next step is a follow-up CT scan in 6-12 months to evaluate for interval growth, rather than more invasive testing like PET scan, mediastinoscopy or sputum cytology. CT abdomen would not be helpful in evaluating a solitary pulmonary nodule.E: Repeat chest CT scan in 6 months 