【单选题】
壶腹周围癌的预后比胰头癌好的原因是 ___
A. 不易向淋巴结及肝脏转移
B. 肿瘤的恶性程度低
C. 肿瘤居于十二指肠腔内,不易向周围侵犯
D. 肿瘤居于肠腔内,易发生坏死脱落
E. 壶腹周围癌黄疸出现较早,容易早就医.早发现.早治疗
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答案
E
解析
暂无解析
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