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lüll Role of preoperative CT colonography in patients with colorectal cancer Sali L; Falchini M; Taddei A; Mascalchi MWorld J Gastroenterol 2014[Apr]; 20 (14): 3795-803In patients with colorectal cancer (CRC), accurate preoperative evaluation is essential for a correct therapeutic plan. Colonoscopy and intravenous contrast-enhanced computed tomography (CT) are currently recommended in the preoperative work-up for CRC. Preoperative colonoscopy has some limitations such as misdiagnosis of synchronous cancers in cases of incomplete exploration of the colon and inaccurate tumor localization. Intravenous contrast-enhanced CT successfully documents distant metastases although it sometimes enables unsatisfactory locoregional staging. Computed tomography colonography (CTC) is obtained after gas insufflation of the colon and offers a comprehensive preoperative evaluation in patients with CRC, including a definition of the segmental location of the tumor, presence of synchronous lesions or lack thereof, and fairly accurate locoregional staging. CTC has some limitations, including a lack of biopsy capability, suboptimal sensitivity for synchronous small polyps, and unsatisfactory nodal staging. Bearing in mind these limitations, CTC could be employed as a "one-stop-shop" examination for preoperative assessment in patients with CRC.|*Colonography, Computed Tomographic[MESH]|Colonoscopy[MESH]|Colorectal Neoplasms/*diagnostic imaging/*surgery[MESH]|Contrast Media/chemistry[MESH]|Europe[MESH]|Humans[MESH]|Insufflation[MESH]|Intestinal Obstruction/surgery[MESH]|Neoplasm Staging[MESH]|Neoplasms, Multiple Primary/diagnostic imaging[MESH]|Preoperative Period[MESH] |