Prognostic significance of computed tomography-detected extramural vascular invasion in colon cancer

Table 1 Evaluation of extramural vascular invasion on computed tomography

CT score	CT status	Morphology features on CT	EMVI status
0	Definitely no	Absence of tumor extension beyond the colon wall/tumor extension through the colon wall but no adjacent vessels (mesenteric contralateral side)	Negative
1	No without high confidence	Stranding in proximity of vessels but no tumor density in vessels (mesenteric side)	Negative
2	Yes without high confidence	Similar tumor density in adjacent vessels; vessel expansion by tumor (mesenteric side)	Positive
3	Definitely yes	Similar tumor density in adjacent vessels; Irregular vessel contour by tumor (mesenteric side)	Positive

EMVI: Extramural vascular invasion; CT: Computed tomography.