input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 56-year-old man presents to the clinic complaining of subacute back pain for the past month. The pain is described as a dull, constant ache that is worse at night. He could not recall any precipitating event except for an amateur weight-lifting competition that he participated in 2 months ago. Past medical history is significant for non-small cell lung cancer that was diagnosed and successfully treated. A PET scan 1 year ago demonstrated no recurrence. Physical exam was unremarkable except for some point tenderness along the lumbosacral area. What is the most likely imaging finding in this patient?   (A) Bulging disc impinging on lumbar spinal nerve   (B) Lytic lesions of the lumbar spine   (C) Narrowing of the lumbar disc space   (D) Sacroilitis and fusion of the lumbar spine
output: ['(B) Lytic lesions of the lumbar spine <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Bulging disc impinging on lumbar spinal nerve  (B) Lytic lesions of the lumbar spine  (C) Narrowing of the lumbar disc space  (D) Sacroilitis and fusion of the lumbar spine <> possible answers', '  A 56-year-old man presents to the clinic complaining of subacute back pain for the past month. The pain is described as a dull, constant ache that is worse at night. He could not recall any precipitating event except for an amateur weight-lifting competition that he participated in 2 months ago. Past medical history is significant for non-small cell lung cancer that was diagnosed and successfully treated. A PET scan 1 year ago demonstrated no recurrence. Physical exam was unremarkable except for some point tenderness along the lumbosacral area. What is the most likely imaging finding in this patient? <> context']