[Table/Fig-4b].

at different level is showing abscess formation at the site of internal opening (arrowhead) and hyperintense secondary tract extending above the levator plate (arrow). It was a grade-5 perianal fistula (St. James University Hospital MR Imaging Classification of Perianal Fistulae). T1W-T1 weighted, T2W-T2 weighted, FS-Fat saturated