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
Pulsatile mets seen in w hich cancer- 
Select and explain. 
A. Lung cancer, B. Prostate cancer, C. Renal cancer, D. Breast cancer
C: Renal cancer
Answer: C: Renal cancer 
Explanation: 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.