A 47-year-old man presents to the emergency department with a single episode of rectal bleeding and abdominal pain, prompting a computed tomography (CT) of the abdomen and pelvis. A right colon mass is identified as well as numerous masses throughout the liver and the visible portions of the lungs bilaterally. His pain resolves and his bleeding ceases. He denies obstipation or constipation. He does not require a blood transfusion and is not anemic on laboratory evaluation. A colonoscopy is performed, and a nonobstructing lesion is identified in the proximal ascending colon with pathology consistent with adenocarcinoma. A CT-guided biopsy of the liver confirms pathology consistent with adenocarcinoma of colonic origin. Genetic sequencing is pending. The intervention shown to have the least favorable outcome is