Özet:

Background and Aims: Recent studies have assessed the ability of positron emission tomography/computed tomography to detect synchronous colonic pathology and determined the significance of fluorodeoxyglucose activity. Therefore, focal lesions should be followed closely. In our patients with focal involvement, the diagnosis was confirmed by colonoscopy and histopathology. The aim of this case-based study was to assess the performance of fluorodeoxyglucose positron emission tomography/computed tomography for the detection of colonic adenomas. Materials and Methods: A total of six random cancer patients who underwent positron emission tomography/ computed tomography and showed intense focal colonic fluorodeoxyglucose uptake were enrolled in this study. The etiology of positron emission tomographyfindings was verified with a subsequent colonoscopy and endoscopic resection. The characteristics of the lesions detected by histopathologic examination are presented. Results: All polyps with fluorodeoxyglucose uptake were >15 mm. Four polyps with high-grade dysplasia were >25 mm in diameter. One of the other polyps measuring 20 mm was determined as tubular adenoma. Another showed low-grade dysplasia and measured 15 mm in diameter. In addition, five adenomatous polyps 6-7 mm in diameter were detected in two cases. There was no dysplasia in these five polyps, and no fluorodeoxyglucose uptake was detected. Conclusions:Presence of a focal colonic fluorodeoxyglucose uptake as an incidental finding on a positron emission tomography/computed tomography scan justifies a colonoscopy. Fluorodeoxyglucose uptake of adenomatous polyps increases in conjunction with the degree of dysplasia and adenoma size. Nevertheless, positron emission tomography/computed tomography has no place in colon cancer screening and surveillance

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