INTRODUCTION: accurate preoperative localization of colorectal cancer (CRC) is very important, with a wide range of published error rates. AIMS: to determine accuracy of endoscopic localization of CRC in comparison with preoperative computed tomography (CT). To analyse variables that could be associated with a wrong endoscopic localization. PATIENTS AND METHODS: endoscopic and CT localization of a series of CRC without previous surgery were reviewed. We studied the concordance between endoscopic and radiologic localization against operative findings comparing accuracy of endoscopy and CT. We analysed the frequency of wrong endoscopic diagnoses with regard to a series of patient, endoscopy and tumor variables. RESULTS: two hundred thirty seven CRC in 223 patients were studied. Concordance with surgical localization was: colonoscopy = 0.87 and CT = 0.69. Endoscopic localization accuracy was:91.1%; CT: 76.2%: p = 0.00001; OR = 3.22 (1.82-5.72). Obstructive cancer presented a higher rate of wrong localization: 18 vs. 5.7% in non-obstructive tumors (p = 0.0034; OR = 3.65 (1.35-9.96). Endoscopic localization mistakes varied depending on tumor location, being more frequent in descending colon: 36.3%, p = 0.014; OR = 6.23 (1.38-26.87) and cecum: 23.1%, p = 0.007; OR = 3.92 (1.20-12.43). CONCLUSIONS: endoscopic accuracy for CRC localization was very high and significantly better than CT accuracy. Obstructive tumor and those located in the descending colon or cecum wereassociated with a significant increase of the error risk of CRC endoscopic localization.
INTRODUCTION: accurate preoperative localization of colorectal cancer (CRC) is very important, with a wide range of published error rates. AIMS: to determine accuracy of endoscopic localization of CRC in comparison with preoperative computed tomography (CT). To analyse variables that could be associated with a wrong endoscopic localization. PATIENTS AND METHODS: endoscopic and CT localization of a series of CRC without previous surgery were reviewed. We studied the concordance between endoscopic and radiologic localization against operative findings comparing accuracy of endoscopy and CT. We analysed the frequency of wrong endoscopic diagnoses with regard to a series of patient, endoscopy and tumor variables. RESULTS: two hundred thirty seven CRC in 223 patients were studied. Concordance with surgical localization was: colonoscopy = 0.87 and CT = 0.69. Endoscopic localization accuracy was:91.1%; CT: 76.2%: p = 0.00001; OR = 3.22 (1.82-5.72). Obstructive cancer presented a higher rate of wrong localization: 18 vs. 5.7% in non-obstructive tumors (p = 0.0034; OR = 3.65 (1.35-9.96). Endoscopic localization mistakes varied depending on tumor location, being more frequent in descending colon: 36.3%, p = 0.014; OR = 6.23 (1.38-26.87) and cecum: 23.1%, p = 0.007; OR = 3.92 (1.20-12.43). CONCLUSIONS: endoscopic accuracy for CRC localization was very high and significantly better than CT accuracy. Obstructive tumor and those located in the descending colon or cecum wereassociated with a significant increase of the error risk of CRC endoscopic localization.
Authors: Arash Azin; M Carolina Jimenez; Michelle C Cleghorn; Timothy D Jackson; Allan Okrainec; Peter G Rossos; Fayez A Quereshy Journal: Can J Surg Date: 2016-02 Impact factor: 2.089
Authors: Michele Manigrasso; Marco Milone; Mario Musella; Pietro Venetucci; Francesco Maione; Ugo Elmore; Gaetano Gallo; Roberto Perinotti; Giovanni Domenico De Palma Journal: Updates Surg Date: 2021-10-05
Authors: Susan J Moug; Spyridon Fountas; Mark S Johnstone; Adam S Bryce; Andrew Renwick; Lindsey J Chisholm; Kathryn McCarthy; Amy Hung; Robert H Diament; John R McGregor; Myo Khine; James D Saldanha; Khurram Khan; Graham Mackay; E Fiona Leitch; Ruth F McKee; John H Anderson; Ben Griffiths; Alan Horgan; Sonia Lockwood; Carly Bisset; Richard Molloy; Mark Vella Journal: Surg Endosc Date: 2016-11-08 Impact factor: 4.584