A 65-year-old man consults a physician because he has had severe alternating constipation and diarrhea for the past two months. Hemoccult test on a stool sample is positive for occult blood. Colonoscopy demonstrates a large annular, encircling mass 25 cm above the anal verge, in the descending colon. To which of the following nodes would this tumor be most likely to first metastasize?
Gastroepiploic Inferior mesenteric Internal iliac Sub Pyloric