Two Cases of 18F-FDG-PET/CT Positive Schloffer Tumor Requiring Differentiation from Local Recurrence of Colon Cancer

We report two cases of Schloffer tumor that required resection after radical colon cancer surgery because of suspected lymph node recurrence on contrast-enhanced (CE) CT and 18F-FDG-PET/CT.Case1 is 69-year-old man with sigmoid colon cancer pStage IIA and case 2 is a 67-year-old male with descending colon cancer pStage IIIB.