Fig. 1

Pre and post contrast pelvic MRI: 36-year-old female post neoadjuvant rectal adenocarcinoma: Axial T2 weighted image (A), Axial diffusion weighted image (B) and coronal post contrast T1 weighted image with fat suppression (C): Circumferential irregular thickening of the lower third rectum (arrows) involving the external muscle layer with minimal extramural spread, no MRF involvement, extending downward into the internal anal sphincter sparing the external sphincter (asterisks). Multiple mesorectal rounded LNs (arrowheads) better detected on DW image, no extra-mesorectal LNs. MRI based staging T3, N2