Figure 11: Trans-sphincteric fistula in a male patient. Axial and Coronal MRI T2WI images with fat saturation showing the primary tract penetrates the sphincter complex to open in the anal canal opposite 7 o’clock (white arrows). Inflammatory changes with possible abscess formation seen in the right ischio-anal fossa that was found at operation (red arrows), no further tracts or abscesses were found at operation that had not been identified on MRI.