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A 45-year-old female imaged with short tau inversion recovery (A), 2D T2 turbo spin-echo (B and D), and T2 with fat saturation (C). The small vessels mask the extrasphincteric fistula (white arrows) that was corrected after being noticed on T2 turbo spin-echo. T2 with fat saturation (C) was unable to detect the fistula or correctly identify its relationship to the sphincter complex (D).
