This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vascular surgery, Subject name: Surgery
[{'content': 'Surgery for varicose veins is contraindicated by even stripping in \nSelect and explain. \nA. DVD, B. DVT, C. Atherosclerosis, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: DVT is a contraindication for the treatment of varicose veins Varicose vein surgery should be never attempted in a case where DVT exists along with varicose veins, because in these cases, superficial veins are the only valved venous pathway and excising them will only aggravate the condition Ref: Sabiston 20th edition Pgno :1836', 'role': 'assistant'}]