Role of endoanal ultrasound in the assessment of perianal fistula in correlation with MRI fistulography

Abstract Background Perianal fistula is a considered as chronic recurrent inflammatory condition that requires proper surgical treatment and may require repeated intervention. Therefore, adequate pre-operative radiological diagnosis plays critical role. In this study, we aimed at comparing the role of endoanal ultrasonography with MRI fistulography in evaluating primary fistula's tract, internal opening, secondary extensions, complications perianal fistula. Results The study was carried over 108 males (90%) 12 females (10%) presenting clinically diagnosed Ultrasound found superior to localization opening estimated K value (0.44), P (0.001). Regarding type fistula, ultrasound agreement 112 cases (93.3%) about (0.7). equally effective detection complication 1. assessment between two modalities 50% k 0.65. Conversely, characterization fibrotic tracts. Conclusions Both EAUS have crucial evaluation fistulas. preferable opening; ,conversely, extra-sphincteric fistulas tracts EAUS.