Preoperative localization of distal colorectal tumours.

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COD: 06_2016_14-2629 Categorie: ,

Savas Bayrak, Erdem Kinaci, Abdulkerim Ozakay, Ceyda Turan Bektas, Aytul Hande Yardimci, Esra Arslan, Mert Mahsuni Sevinc, Hasan Bektas.

Ann. Ital. Chir., 2016 87: 595-600

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BACKGROUND: The detection of true localization of the tumour are crucial to driving the proper treatment algorithm in distally-located colorectal cancers (CRCs). The performance of four methods; colonoscopy, computed tomography (CT), magnetic resonance imaging (MRI), and fluoro-deoxy-glucose-positron emission tomography scan (FDG/PET-CT), were evaluated to identify the localizations of distal colorectal malignancies according to the rectum, sigmoid colon and recto-sigmoid junction (RSJ). MATERIALS AND METHODS: Medical records of patients who underwent colorectal surgery for tumours located on the sigmoid colon, RSJ, or rectum were reviewed retrospectively. METHODS: In total, 156 patients were included in the study. In terms of overall accuracy, colonoscopy, CT, MRI and FDG/PET-CT had similar accuracy rates, with 74%, 67%, 75%, and 74%, respectively. Colonoscopy was relatively less sensitive for rectosigmoid tumours (33%), while CT was less sensitive for rectal tumours (26%). MRI was less specific for tumours located on the rectum (33%). CONCLUSIONS: It is crucial to correctly identify the location of distal colorectal tumours in order to plan accurate treatment strategies. Preoperative modalities, including colonoscopy, CT, MRI, and FDG/PET-CT, do not provide excellent accuracy for tumours of the distal colorectal tumours. To increase the success of these modalities; combined use could be more successful.

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