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: Surgery
[{'content': 'M.C. site for secondary metastasis in a case of Hypernephroma - \nSelect and explain. \nA. Adrenal, B. Lungs, C. Brain, D. Bones', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Bailey and Love writes - "The Renal cell Ca is prone to grow into the renal vein. Pieces of growth are swept into the circulation and end up in the lung where they grow to form cannon-ball secondary deposits. Metastasis to bone also occurs. Highly vascular metastasis may pulsate."\nAlso Remember\nMC site of metastasis from lung Ca\xa0→\xa0Adrenals\xa0next is Liver, Brain\nMC site for distant metastasis from Bladder Ca\xa0→\xa0Vertebrae\nMC site for distant metastasis from Colorectal Ca\xa0→\xa0Liver\nMC site for distant metastasis from Melanoma (cutaneous)\xa0→\xa0Skin/subcutanous tissue, Lung\nMC site for distant metastasis from Melanoma (Ocular)\xa0→\xa0Liver\nMC site for distant metastasis from Prostate\xa0→\xa0Bonesstas\nMC site for distant metastasis from Soft tissue sarcoma\xa0→\xa0Lung\nMC site for distant metastasis from Testis Ca\xa0→\xa0Lung\nMC site for distant metastasis from Thyroid Ca\xa0→\xa0Bone, Lung\xa0\nMetastasis to lung is most commonly from\xa0→ Breast Ca', 'role': 'assistant'}]