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Insights into Imaging
Fig. 7 | Insights into Imaging

Fig. 7

From: MRI-detected extramural venous invasion of rectal cancer: Multimodality performance and implications at baseline imaging and after neoadjuvant therapy

Fig. 7

Extramural venous invasion on CT. A 47-year-old female with rectal adenocarcinoma. A nodule with an irregular margin containing intermediate signal intensity is observed in the mesorectum on axial T2WI (a arrow). Sagittal T2WI reveals a cord-like structure with tumor signal intensity in the superior rectal vein (b arrow) which drains to the inferior mesenteric veins (b arrowheads) Similarly, contrast-enhanced CT demonstrates an enhancing irregular nodule within the posterior mesorectum on the axial image (c arrow). On the sagittal image a cord-like nodular mass is contiguous with the dilated superior rectal vein (d arrow) and inferior mesenteric veins (d arrow heads) on the sagittal image. The diameters of the inferior mesenteric and superior rectal veins are 8.5 mm (e arrow) and 4.8 mm (f arrow), respectively, which is suggestive of the presence of EMVI

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