Abstract
Radical resection of colorectal cancer yields satisfactory results. Even if the cancer recurs, long-term survival is expected through further surgical resection of the recurrent disease. For early detection of recurrent lesions, we routinely perform periodic blood tests and imaging studies, in which 18F-fluorodeoxyglucose-glucose positron emission tomography (FDG-PET) plays an important role, for lesion differentiation. We encountered a case of a benign lesion, which had been clinically diagnosed as recurrence of resected colon cancer by FDG-PET/computed tomography (CT). A 69-year-old woman underwent radical resection of stage II sigmoid colon cancer. Five years after the operation, local recurrence was suspected on the basis of follow-up CT examination findings. Since the standardized uptake value (SUV) on FDG-PET/CT was 13.3, we diagnosed the lesion as a postoperative local recurrence and performed surgical resection of the lesion. The lesion was conclusively diagnosed as benign fatty tissue, including a fibrovascular component, by histopathological examination. FDG-PET is a very useful technique for differentiating benign from malignant disease. In colorectal cancer, FDG-PET not only enables the differentiation of malignancy...Continue Reading
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