Fig. 4From: MRI-detected extramural venous invasion of rectal cancer: Multimodality performance and implications at baseline imagingĀ and after neoadjuvant therapyAdapted from Smith NJ, et al. Br J Surg 2008 [22]Extramural venous invasion scoring system based on T2-weighted images. a No vessel exists adjacent to the primary tumor (score 0). b Normal diameter vessel adjacent to the primary tumor demonstrates no tumor signal intensity (score 1). c Slightly expanded vessel without abnormal signal intensity (score 2). d Expanded vessel including obvious tumor signal intensity (score 3). e Expanded vessel with irregular or nodular contour containing tumor signal intensity (score 4).Back to article page