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(题干)男，48岁。吞咽困难1个月。30年前因'胃溃疡穿孔'做'胃大部切除术'。入院上消化道造影，提示：食管中段长3cm充盈缺损伴管腔狭窄，黏膜破坏，胃呈术后改变(毕Ⅰ式)。辅助检查未发现远隔转移。为明确诊断还需作哪项检查
请帮忙给出每个问题的正确答案和分析，谢谢！

A.胸部CT检查
B.纤维胃镜检查
C.食管脱落细胞检查
D.食管核素扫描检查
E.胸部MRI检查
如诊断为食管鳞癌，合理的治疗方案是A.放疗
B.化疗
C.食管内支架
D.食管癌根治手术
E.胃造瘘术
应首选何器官作为代食管器官A.残胃
B.空肠
C.十二指肠
D.带血管蒂空肠段
E.结肠
【参考答案】

问题 1 答案解析：B
问题 2 答案解析：D
问题 3 答案解析：E

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请帮忙给出每个问题的正确答案和分析，谢谢！
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