title: Magnetic resonance imaging in rectal cancer.
abstract: MR imaging plays a key role in staging evaluation of rectal cancer. The cornerstone of staging MR involves high-resolution T2 imaging orthogonal to the rectal lumen. The goals of MR staging are identification of patients who will benefit from neoadjuvant therapy prior to surgery to minimize postoperative recurrence and planning of optimal surgical approach. MR provides excellent anatomic visualization of the rectum and mesorectal fascia, allowing for accurate prediction of circumferential resection margin status and tumor stage. MR has an evolving role for the evaluation of neoadjuvant treatment response, further triaging optimal patient treatment and surgical approach.
authors.affiliation: Abdominal Imaging, University Health Network, Mount Sinai and Women's College Hospital, 610 University Avenue, 3-957, Toronto, ON M5G 2M9, Canada. Electronic address: beth.a.furey@gmail.com.
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Furey
authors.affiliation: Abdominal Imaging, University Health Network, Mount Sinai and Women's College Hospital, 610 University Avenue, 3-957, Toronto, ON M5G 2M9, Canada.
authors.forename: Kartik S
authors.initials: KS
authors.lastname: Jhaveri
mesh_terms: D000465:Algorithms; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D009367:Neoplasm Staging; D012004:Rectal Neoplasms / Q000473:pathology*; D012007:Rectum / Q000473:pathology*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
keywords: Circumferential resection margin; Magnetic resonance imaging; Preoperative staging; Rectal anatomy; Rectal cancer