This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Orthopaedics
[{'content': 'Regional lymph nodes are involved in which of these - \nSelect and explain. \nA. Ewing sarcoma, B. Osteosarcoma, C. Adamantinoma, D. Synovial cell sarcoma', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Usually, the sarcomas do not metastasize to the lymph nodes.\nSarcomas which metastasize to lymphatics are\n\n\nRhabdomyosarcoma\xa0\xa0 \xa0\xa0\xa0\xa0\xa0\xa0\xa0\nClear cell sarcoma\xa0\xa0\xa0\xa0\xa0\xa0\xa0\nEpithelial sarcoma\nMalignant fibrous histiosarcoma\nAngiosarcoma\nSynovial cell sarcoma\nLymphosarcoma', 'role': 'assistant'}]