摘要
AIM： To investigate the relationship between postendoscopic resection （ER） scars on magnifying endoscopy （ME） and the pathological diagnosis in order to validate the clinical significance of ME. METHODS： From January, 2007 to June, 2008, 124 patients with 129 post-ER scar lesions were enrolled. Mucosal pit patterns on ME were compared with conventional endoscopy （CE） findings and histological results obtained from targeted biopsies. RESULTS： CE findings showed nodular scars （53/129）, erythematous scars （85/129）, and ulcerative scars （4/129）. The post-ER scars were classified into four pit patterns of sulci and ridges on ME： （ Ⅰ ） 47 round; （Ⅱ） 54 short rod or tubular; （Ⅲ） 19 branched or gyrus-like;and （Ⅳ） 9 destroyed pits. Sensitivity and specificity were 88.9% and 62.5%, respectively, by the presence of nodularity on CE. Erythematous lesions were high sensitivity （100%）, but specificity was as low as 36.7%. The range of the positive predictive va ue （PPV） on CE was as low as 10.6%-25%. Nine type N pit patterns were diagnosed as tumor lesions, and 120 cases of type Ⅰ-Ⅲ pit patterns revealed non-neoplastic lesions. Thus, the sensitivity, specificity, and the PPV of ME were 100%. CONCLUSION： ME findings can detect the presence of tumor in post-ER scar lesions, and make evident the biopsy target site in short-term follow-up. Further large-scale and long-term studies are needed to determine whether ME can replace endoscopic biopsy.
AIM:To investigate the relationship between post-endoscopic resection(ER) scars on magnifying endoscopy(ME) and the pathological diagnosis in order to validate the clinical significance of ME.METHODS:From January,2007 to June,2008,124 patients with 129 post-ER scar lesions were enrolled.Mucosal pit patterns on ME were compared with conventional endoscopy(CE) findings and histological results obtained from targeted biopsies.RESULTS:CE fi ndings showed nodular scars(53/129),erythematous scars(85/129),and ulcerative scars(4/129).The post-ER scars were classified into four pit patterns of sulci and ridges on ME:47 round;54 short rod or tubular;19 branched or gyrus-like;and9 destroyed pits.Sensitivity and specificity were 88.9% and 62.5%,respectively,by the presence of nodularity on CE.Erythematous lesions were high sensitivity(100%),but specificity was as low as 36.7%.The range of the positive predictive value (PPV) on CE was as low as 10.6%-25%.Nine type pit patterns were diagnosed as tumor lesions,and 120 cases of type pit patterns revealed non-neoplastic lesions.Thus,the sensitivity,specificity,and the PPV of ME were 100%.CONCLUSION:ME findings can detect the presence of tumor in post-ER scar lesions,and make evident the biopsy target site in short-term follow-up.Further large-scale and long-term studies are needed to determine whether ME can replace endoscopic biopsy.
