Preoperative MDCT image demonstrates EMVI (A) MDCT image shows descending colon cancer of a 73-year-old man. There was tumor density in extramural vessels and the contour and caliber of these vessels are obviously irregular (white arrows). EMVI score 4, Positive. (B) MDCT image shows fumigating colon cancer of a 34-year-old man. There were extramural vessels near the tumor, but no tumor density in extramural vessels (white arrows). EMVI score 2, Negative.