Magnetic Resonance Imaging for Staging of Primary Rectal Cancer: Imaging Prognosticators
EHY Hung, EYL Dai, CCM Cho
Hong Kong J Radiol 2017;20:259-71
DOI: 10.12809/hkjr1716937
Accurate staging by high-resolution magnetic resonance imaging (MRI) is pivotal to the multidisciplinary management of rectal cancer. Aside from tumour and lymph node staging, high-resolution MRI can identify other imaging prognosticators to stratify patients to different prognostic groups for different treatment. These imaging prognosticators include circumferential resection margin, extramural venous invasion, extramural depth of tumour extension, vascular / tumour deposits, mucinous primary tumour, and relationship to the inter-sphincteric plane (in low-rectal tumours). This review describes the imaging features and prognostic impact of these MRI-detected biomarkers.
Authors’ affiliation:
EHY Hung, EYL Dai, CCM Cho
Department of Imaging and Interventional Radiology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
中文摘要
磁共振成像分期原發性直腸癌：影響預後的影像學表現
洪曉義、戴毓玲、曹子文
通過高解析度磁共振成像（MRI）準確分期是多學科綜合治療直腸癌的關鍵。除了腫瘤和淋巴結分期外，高解析度MRI可以發現其他影響預後的因素，以便區分不同預後的患者進行不同的治療。這些影響預後因素的影像學表現包括周圍切除邊緣、外壁靜脈侵犯、腫瘤外展深度、腫瘤血管轉移、粘液原發性腫瘤以及低位直腸腫瘤括約肌間平面關係。這篇綜述文章描述這些預後影響的MRI成像特徵。