Male patient recently diagnosed with colorectal adenocarcinoma came for resection of his tumor. CT scan showed the large mass in the descending and sigmoid colon with several small lymph nodes in the mesocolon suspicious for metastatic disease. Age is 61 years.

No abnormalities in liver, gallbladder, pancreas, or spleen. During surgery, a small white 0.3?cm diameter nodule was noted on the surface of the right lobe of the liver. What can be now?