(来学网)【助理】男,68岁。大便带血6个月,体重下降4kg,既往有内痔病史对明确诊断最有意义的检查是
  • A.
    (来学网)腹部CT
  • B.
    (来学网)腹部X线平片
  • C.
    (来学网)腹部B超
  • D.
    (来学网)结肠镜
  • E.
    (来学网)血CEA