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为评价术前化放疗在局部进展期直肠癌中使分期下降、保留肛门括约肌(SP)手术的作用,M.D.Anderson肿瘤中心于1991～1995年间对117例局部进展期直肠癌行术前化放疗,观察手术前后肿瘤分期的改变及保留肛门括约肌的手术情况。117例直肠内超声确定的术前分期uT_2N_22％、uT_3 No 47％、uT_3N_1 49％、uT_4 No 2％;15例(13％)因肿瘤梗阻无法行直肠超声检查,但10例用X线造影确定为T_3。因此T_3共108例(96％)。
In order to evaluate the role of preoperative chemoradiotherapy in locally advanced stage of rectal cancer to reduce staging and preserve anal sphincter (SP) surgery, MDAnderson Cancer Center conducted preoperative radiotherapy for 117 patients with locally advanced rectal cancer between 1991 and 1995, Observe the changes of tumor staging before and after surgery and keep the anal sphincter operation. 117 cases of rectal ultrasound confirmed the preoperative staging uT_2N_22%, uT_3 No 47%, uT_3N_1 49%, uT_4 No 2%; 15 cases (13%) due to tumor obstruction can not be rectal ultrasound, but 10 cases were confirmed by X-ray For T_3. Therefore T_3 a total of 108 cases (96%).