This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney, Subject name: Medicine
[{'content': 'Pulsatile mets seen in w hich cancer- \nSelect and explain. \nA. Lung cancer, B. Prostate cancer, C. Renal cancer, D. Breast cancer', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Renal cancerPrimary tumours that may present as pulsating lesions:Telengiectatic osteogenic sarcomaAngioendothelioma/Angiosarcoma of boneAneurysmal bone cystGiant cell tumour (rarely)Secondary metastasis that may present as pulsating lesionsMetastasis from Renal cell carcinomaMetastasis from thyroid carcinoma.", 'role': 'assistant'}]