论文部分内容阅读
直肠指诊、镜检、活检及CT可用于直肠癌的术前分期.其中仅直肠指诊能直接测知癌肿浸润深度,并作临床分期.直肠指诊亦有助于计划术式及估计预后,缺点为伴有主观因素,限于查诊距肛门10cm内的肿瘤,有时无法触及肿瘤上限.CT虽能精确估计肠壁外病损程度,但对浸润较局限者,并不显著优于指诊.直肠内超声检查法可以弥补指诊与CT的缺点,而对肠壁周围器官的浸润作出准确估计.超声直肠探子由
Rectal examination, microscopy, biopsy and CT can be used for preoperative staging of rectal cancer. Only the digital rectal examination can directly detect the depth of invasion of cancer and make a clinical staging. Digital rectal examination also helps to plan the procedure and estimate Prognosis and disadvantage are accompanied by subjective factors, limited to the diagnosis of tumors within 10cm from the anus, sometimes unable to reach the upper limit of the tumor. Although CT can accurately estimate the extent of lesions outside the intestinal wall, but the infiltration is more limited than those who do not significantly better than Diagnosis. Rectal ultrasound can compensate for the shortcomings of digital examination and CT, and accurately estimate the infiltration of the surrounding organs of the intestine. Ultrasound rectal probe