[Whiteford MH. Perianal abscess/fistula disease. Clin Colon Rectal Surg 2007; 20: 102-9.10.1055/s-2007-977488]Search in Google Scholar
[Sainio P. Fistula-in-ano in a defined population. Incidence and epidemiological aspects. Ann Chir Gynaecol 1984; 73: 219-24.]Search in Google Scholar
[Jones J, Tremaine W. Evaluation of perianal fistulas in patients with Crohn's disease. Med Gen Med 2005; 7: 16.]Search in Google Scholar
[Sofić A, Šehović N, Bešlić Š, Prnjavorac B, Bilalović N, Čaluk J, et al. MR rectum imaging with ultra sound gel as instrumental contrast media in tubulovillous adenoma. Radiol Oncol 2008; 42: 136-42.10.2478/v10019-008-0012-6]Search in Google Scholar
[Kuijpers HC, Schulpen T. Fistulography for fistula-in-ano. Is it useful? Dis Colon Rectum 1985; 28: 103-4.10.1007/BF02552656]Search in Google Scholar
[Weisman RI, Orsay CP, Pearl RK, Abcarian H. The role of fistulography in fistula-in-ano. Report of five cases. Dis Colon Rectum 1991; 34: 181-4.10.1007/BF02049995]Search in Google Scholar
[Lunniss PJ, Armstrong P, Barker PG, Reznek RH, Phillips RK. Magnetic resonance imaging of anal fistulae. Lancet 1992; 340: 394-6.10.1016/0140-6736(92)91472-K]Search in Google Scholar
[Lunniss PJ, Barker PG, Sultan AH, Armstrong P, Reznek RH, Bartram CI, et al. Magnetic resonance imaging of fistula-in-ano. Dis Colon Rectum 1994; 37: 708-18.10.1007/BF020544168026238]Search in Google Scholar
[Halligan S, Stoker J. Imaging of fistula in ano. Radiology 2006; 239: 18-33.10.1148/radiol.239104104316567481]Search in Google Scholar
[Hussain SM, Stoker J, Schouten WR, Hop WC, Lameris JS. Fistula in ano: endoanal sonography versus endoanal MR imaging in classification. Radiology 1996; 200: 475-81.10.1148/radiology.200.2.86853448685344]Search in Google Scholar
[Spencer JA, Ward J, Beckingham IJ, Adams C, Ambrose NS. Dynamic contrast enhanced MR imaging of perianal fistulas. AJR Am J Roentgenol 1996; 167: 735-41.10.2214/ajr.167.3.87516928751692]Search in Google Scholar
[Spencer JA, Chapple K, Wilson D, Ward J, Windsor AC, Ambrose NS. Outcome after surgery for perianal fistula: Predictive value of MR imaging. AJR Am J Roentgenol 1998; 171: 403-6.10.2214/ajr.171.2.96944649694464]Search in Google Scholar
[Yee LF, Birnbaum EH, Read TE, Kodner IJ, Fleshman JW. Use of endoanal ultrasound in patients with rectovaginal fistulas. Dis Colon Rectum 1999; 42: 1057-64.10.1007/BF0223670310458131]Search in Google Scholar
[Gustafsson UM, Kahvecioglu B, Astrom G, Ahlstrom H, Graf W. Endoanal ultrasound or magnetic resonance imaging for preoperative assessment of anal fistula: a comparative study. Colorectal Dis 2001; 3: 189-97.10.1046/j.1463-1318.2001.00241.x12790988]Search in Google Scholar
[Schwartz DA, Wiersema MJ, Dudiak KM, Fletcher JG, Clain JE, Tremaine WJ, et al. A comparison of endoscopic ultrasound, magnetic resonance imaging, and exam under anesthesia for evaluation of Crohn's perianal fistulas. Gastroenterology 2001; 121: 1064-72.10.1053/gast.2001.2867611677197]Search in Google Scholar
[Maier AG, Funovics MA, Kreuzer SH, Herbst F, Wunderlich M, Teleky BK, et al. Evaluation of perianal sepsis: comparison of anal endosonography and magnetic resonance imaging. J Magn Reson Imaging 2001; 14: 254-260.10.1002/jmri.118111536402]Search in Google Scholar
[Gravante G, Giordano P. The role of three-dimensional endoluminal ultrasound imaging in the evaluation of anorectal diseases: a review. Surg Endosc 2008; 22: 1570-8.10.1007/s00464-008-9865-418401655]Search in Google Scholar
[Schratter-Sehn AU, Lochs H, Vogelsang H, Schurawitzki H, Herold C, Schratter M. Endoscopic ultrasonography versus computed tomography in the differential diagnosis of perianorectal complications in Crohn's disease. Endoscopy 1993; 25: 582-6.10.1055/s-2007-10104098119208]Search in Google Scholar
[Schaefer O, Lohrmann C, Langer M. Assessment of anal fistulas with highresolution subtraction MR-fistulography: comparison with surgical findings. J Magn Reson Imaging 2004; 19: 91-8.10.1002/jmri.1043614696225]Search in Google Scholar
[Botros M, Quevedo JF, Miller RC. Angiosarcoma of the liver after multimodality therapy for gallbladder carcinoma. Radiol Oncol 2009; 43: 126-31.10.2478/v10019-009-0012-1]Search in Google Scholar
[Piekarski JH, Jereczek-Fossa BA, Nejc D, Pluta P, Szymczak W, Sek P, et al. Does fecal diversion offer any chance for spontaneous closure of the radiation-induced rectovaginal fistula? Int J Gynecol Cancer 2008; 18: 66-70.10.1111/j.1525-1438.2007.00954.x17466039]Search in Google Scholar