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': 'Beheaded Scottish terrier sign is seen in? \nSelect and explain. \nA. Spondylosis, B. Spondylolisthesis, C. Fracture transerve process of lumber vertebra, D. Fracture scaphoid', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans BIn the oblique view, the "scotty dog" sign can be seen. It is called a scotty dog sign, as the spinous process and lamina connecting the pedicle show the lateral aspect of a Scottish Terrier or "scotty dog." Scotty dog with a collar is seen in Spondylolysis. When the "scotty dog" looks like he has a thick collar or is beheaded the fracture exists suggesting spondylolisthesis.', 'role': 'assistant'}]