Fig. 3From: MRI-detected extramural venous invasion of rectal cancer: Multimodality performance and implications at baseline imagingĀ and after neoadjuvant therapyExtramural venous invasion on T2-weighted image. A nodular-shaped structure (a arrow) arising from the ulcer crater and leading edge of the primary lesion (a asterisk) invades the mesorectal fascia (a arrowhead). The structure alsoĀ extends cranially in the mesorectal fascia (b arrow) and is branched (c arrows)Back to article page