Magnetic resonance imaging findings of carcinoma arising from anal fistula: A retrospective study in a single institution

Figure 4 Magnetic resonance images of a 71-year-old man with mucinous adenocarcinoma. A: Axial dynamic contrast-enhanced image; B: Sagittal dynamic contrast-enhanced image; A and B images show the contrast enhancement of the peritumoral areas. The boundary of the enhanced region was not clear (orange arrows); C: Axial FS-T2WI; D: Sagittal FS-T2WI. C and D images show that the enhanced region was slightly hyperintense (orange arrows).