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': 'Spoke wheel calcification in an osteolytic lesion is seen in \nSelect and explain. \nA. Hemangioma, B. Secondaries, C. Plasmacytosis, D. Hydatid disease', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Radiological findings in intraosseous hemangioma are : Prominent trabecular pattern Better visualization of thickened veical trabeculation: polka-dot appearance on axial images and corduroy sign on coronal and sagittal images. Lytic calvarial lesions with spoke-wheel appearance Irregular and lytic in long bones, with a honeycomb appearance', 'role': 'assistant'}]