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Role of Magnification Chromoendoscopy in the Management of Colorectal Neoplastic Lesions Suspicious for Submucosal Invasion

彩色内窥镜 医学 放大倍数 结直肠外科 预测值 放射科 单中心 回顾性队列研究 试验预测值 内科学 结直肠癌 胃肠病学 结肠镜检查 癌症 腹部外科 计算机科学 计算机视觉
作者
Fábio S. Kawaguti,Matheus C. Franco,Bruno da Costa Martins,Vanderlei Segateli,Carlos Frederico Sparapan Marques,Caio Nahas,Rodrigo Ambar Pinto,Adriana V. Safatle‐Ribeiro,Ulysses Ribeiro,Sérgio Carlos Nahas,Fauze Maluf‐Filho
出处
期刊:Diseases of The Colon & Rectum [Ovid Technologies (Wolters Kluwer)]
卷期号:62 (4): 422-428 被引量:18
标识
DOI:10.1097/dcr.0000000000001343
摘要

Correctly predicting the depth of tumor invasion in the colorectal wall is crucial for successful endoscopic resection of superficial colorectal neoplasms.The aim of this study was to assess the accuracy of magnifying chromoendoscopy in a Western medical center to predict the depth of invasion by the pit pattern classification in patients with colorectal neoplasms with a high risk of submucosal invasion.This single-center retrospective study, from a prospectively collected database, was conducted between April 2009 and June 2015.The study was conducted at a single academic center.Consecutive patients with colorectal neoplasms with high risk of submucosal invasion were included. These tumors were defined by large (≥20 mm) sessile polyps (nonpedunculated), laterally spreading tumors, or depressed lesions of any size.Patients underwent magnifying chromoendoscopy and were classified according to the Kudo pit pattern. The therapeutic decision, endoscopic or surgery, was defined by the magnification assessment.Sensitivity, specificity, and positive and negative predictive values of magnifying chromoendoscopy for assessment of these lesions were determined.A total of 123 lesions were included, with a mean size of 54.0 ± 37.1 mm. Preoperative magnifying chromoendoscopy with pit pattern classification had 73.3% sensitivity, 100% specificity, 100% positive predictive value, 96.4% negative predictive value, and 96.7% accuracy to predict depth of invasion and consequently to guide the appropriate treatment. Thirty-three rectal lesions were also examined by MRI, and 31 were diagnosed as T2 lesions. Twenty two (70.1%) of these lesions were diagnosed as noninvasive by magnifying colonoscopy, were treated by endoscopic resection, and met the curative criteria.This was a single-center retrospective study with a single expert endoscopist experience.Magnifying chromoendoscopy is highly accurate for assessing colorectal neoplasms suspicious for submucosal invasion and can help to select the most appropriate treatment. See Video Abstract at http://links.lww.com/DCR/A920.
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