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Colorectal Cancer Screening with Computed Tomography Colonography: Single Region Experience in Kazakhstan
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Jandos Amankulov, Dilyara Kaidarova, Zhamilya Zholdybay, Marianna Zagurovskaya, Nurlan Baltabekov, Madina Gabdullina, Akmaral Ainakulova, Dias Toleshbayev, Alexandra Panina, Elvira Satbayeva, Zhansaya Kalieva
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Clin Endosc 2022;55(1):101-112. Published online July 15, 2021
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DOI: https://doi.org/10.5946/ce.2021.066
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 Abstract
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- Background
/Aims: The aim of our study was to determine the efficacy of computed tomography colonography (CTC) in screening for colorectal cancer (CRC).
Methods
A total of 612 females and 588 males aged 45 to 75 years were enrolled in CTC screening. CTC was performed following standard bowel preparation and colonic insufflation with carbon dioxide. The main outcomes were the detection rate of CRC and advanced adenoma (AA), prevalence of colorectal lesions in relation to socio-demographic and health factors, and overall diagnostic performance of CTC.
Results
Overall, 56.5% of the 1,200 invited subjects underwent CTC screening. The sensitivity for CRC and AA was 0.89 and 0.97, respectively, while the specificity was 0.71 and 0.99, respectively. The prevalence of CRC and AA was 3.0% (18/593) and 7.1% (42/593), respectively, with the highest CRC prevalence in the 66-75 age group (≥12 times; odds ratio [OR], 12.11; 95% confidence interval [CI], 4.45-32.92). CRC and AA prevalence were inversely correlated with Asian descent, physical activity, and negative fecal immunochemical test results (OR=0.43; 95% CI, 0.22-0.83; OR=0.16; 95% CI, 0.04-0.68; OR=0.5; 95% CI, 0.07-3.85, respectively).
Conclusions
Our study revealed high accuracy of CTC in diagnosing colonic neoplasms, good compliance with CTC screening, and high detection rate of CRC.
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