staging, normal structures, diseased rectum, post RT picture, treatment algorithm, contouring mesorectum, contouring guidelines, references, T-stages of rectal cancer, MRI protocol, T-1 weighted TSE, T2 weighted TSE, primary staging and restaging, approaches to imaging, structured MRI reporting, oblique axial, anatomical landmarks, retrorectal space, anorectal ring, anal verge, sagittal, coronal, internal sphincter, external sphincter complex, intersphinteric groove, anorectal injunction, mesorectum, levator ani muscle, mesorectal fascia, levator-sphincter complex, puborectalis, peritonel reflection, sea gull sign, peritoneal covering, mesorectal venous plexus, parameter, inference, clock position, types of growth, morphology, semi-annular, annular, polypoid, mucinous vs non-mucinous, desmoplastic reaction, tumor fat stranding, proximal obstruction, depth of extramural invasion, threatened MRF, CRM status, sphincter complex involvement, ischiorectal fossa involvement, pelvic structures invasion, extramural lympho-vascular invasion, tumor growth, tumor deposition, irregular lymph, smooth lymph node, extramural venous invasion, EMVI, tumor deposits, circumferential resection margin, EMVI grading, nodal drainage in cancer rectum, inguinal node, paraaortic node, criteria for treatment stratification, risk stratification, incision lines, TME, TME variants, response assessment, neoadjuvant treatment, mucinous degeneration, inferior mesenteric artery brnaches, IMA