活检诊断先天性巨结肠时，选何处部位取材最为可靠A．齿线上1．0～2．0cm直肠壁B．齿线上2.5～3.0cm直肠壁C．齿线上3．0～5．0cm直肠...

作者: rantiku 人气: - 评论: 0

问题活检诊断先天性巨结肠时，选何处部位取材最为可靠

选项 A．齿线上1．0～2．0cm直肠壁 B．齿线上2.5～3.0cm直肠壁 C．齿线上3．0～5．0cm直肠壁 D．直肠前壁黏膜组织 E．直肠后壁黏膜组织

答案 B

解析：取材应取齿线上2.5～3.0cm直肠壁。

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