This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skeletal system, Subject name: Radiology
[{'content': 'ln spondylolisthesis following radiological features seen- \nSelect and explain. \nA. Scotty dog, B. Scotty dog wearing a collar, C. Beheaded scotty dog terrier sign, D. Nepolean sign', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Scottish terrier dog is normal appearance of neural arch shadow. Scottish dog wearing a collar is seen in spondylolysis Beheaded Scottish dog is seen in spondylolisthesis Also remember inveed Napolean hat sign is seen in spondylolisthesis. Oblique view of spine better displays the lamina and aicular processes than AP and lateral view', 'role': 'assistant'}]