2[1]Nlicholis RL, Mason AY, Morson Be, et al. The chinical staging of rectal cancer. Br J Surg 1982.69:404-409
3[2]Beynon J. Foy DMA. Roe AM, et al. Endoluminal ultrasound: the accessment of local invasion in rectal cancer, Br J Surg, 1986.73:474 - 477
4刘雁飞等.B超诊断肛周脓肿1例[J].中国超声医学杂志,1995,11(7):503.
5李凯炎.直肠后间隙脓肿1例[J].中国超声医学杂志,1999,15(11):829.
6[3]Stoker J, Hussain SM, Lameris JS. Endoanal magnetic resonance imaging versus endosonography [J] . Radiol Med Torino , 1996,92(6) :738.
7[4]Bects-Tan RG, Bects GL, Van- der- Hoop AG, et al . High resolution magnetic resonance imaging of the anorectal without an en-docoil[J] . Abdom Imaging,1999,24(6) :576.
8Christensen A. Discussion on fistula-in-ano. Dis Colon Rectum, 1986,29:454.
9Eisenhammer S. The anorectal fistulous abscess and fistula. Dis Colon Rectum, 1966,9:91-106.
10Lentner A,Wienert V. Long term indwelling setons for low trans-sphincteric and intersphincteric anal fistulas: experience with 108 cases. Dis Colon Rectum, 1996, 39: 1097-1101.
9Lemis WO, finan P J, Holds worth PJ, et al. Clinical results and manonmetric studies after rectal flap advancement for infraclevator transesphincteric fistulae in ano. Int J Colorec- tal Dis, 1995,10(4) .. 189.
10Morris J, Spencer J A, Ambrose NS. MR imaging classifica-tion of perianal fistulas and its implications {or patientman- agemen. Radiographics, 2000,20 : 623-637.