Daisuke Tsurumaru1, Yusuke Nishimuta2, Satohiro Kai2, Eiji Oki3, Akihiro Nishie2. 1. Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Japan. tsuru-d@radiol.med.kyushu-u.ac.jp. 2. Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Japan. 3. Department of Surgery and Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
Abstract
PURPOSE: The purpose of this study was to examine the relation between computed tomography colonoscopy (CTC) features of colorectal cancer (CRC) and incomplete colonoscopy. MATERIALS AND METHODS: The subjects of this retrospective study consisted of 108 patients with advanced CRC (57 men, 51 women; age range, 32-87 years; median, 65 years) who underwent CTC. We compared local CTC features between the groups of complete (n = 74) and incomplete colonoscopy (n = 34). We performed a receiver operating characteristic (ROC) analysis to assess a diagnostic performance of CTC features to predict incomplete colonoscopy. RESULTS: The cross-sectional area of tumor and stenosis of complete colonoscopy group were significantly smaller and larger than those of incomplete colonoscopy group (p = 0.001 and < 0.001). Circumferential tumor extent rate (CER) showed significantly higher in the incomplete colonoscopy group than complete colonoscopy group (p < 0.001). In the ROC analysis, the cross-sectional area of stenosis showed AUC of 0.916, which was the best to predict incomplete colonoscopy. CONCLUSION: CTC features including larger cross-sectional area of tumor, smaller cross-sectional area of stenosis and 100% CER were significantly associated with incomplete colonoscopy for the patients with CRC.
PURPOSE: The purpose of this study was to examine the relation between computed tomography colonoscopy (CTC) features of colorectal cancer (CRC) and incomplete colonoscopy. MATERIALS AND METHODS: The subjects of this retrospective study consisted of 108 patients with advanced CRC (57 men, 51 women; age range, 32-87 years; median, 65 years) who underwent CTC. We compared local CTC features between the groups of complete (n = 74) and incomplete colonoscopy (n = 34). We performed a receiver operating characteristic (ROC) analysis to assess a diagnostic performance of CTC features to predict incomplete colonoscopy. RESULTS: The cross-sectional area of tumor and stenosis of complete colonoscopy group were significantly smaller and larger than those of incomplete colonoscopy group (p = 0.001 and < 0.001). Circumferential tumor extent rate (CER) showed significantly higher in the incomplete colonoscopy group than complete colonoscopy group (p < 0.001). In the ROC analysis, the cross-sectional area of stenosis showed AUC of 0.916, which was the best to predict incomplete colonoscopy. CONCLUSION: CTC features including larger cross-sectional area of tumor, smaller cross-sectional area of stenosis and 100% CER were significantly associated with incomplete colonoscopy for the patients with CRC.
Entities:
Keywords:
CT colonography; Colonoscopy; Colorectal cancer
Authors: Se Yong Oh; Chong Il Sohn; In Kyung Sung; Dong Il Park; Mun Su Kang; Tae Woo Yoo; Jung Ho Park; Hong Joo Kim; Yong Kyun Cho; Woo Kyu Jeon; Byung Ik Kim Journal: Hepatogastroenterology Date: 2007 Jul-Aug