Probe-based confocal laser endomicroscopy for evaluating the submucosal invasion of colorectal neoplasms View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2017-02

AUTHORS

Bun Kim, Yon Hee Kim, Soo Jung Park, Jae Hee Cheon, Tae Il Kim, Won Ho Kim, Hoguen Kim, Sung Pil Hong

ABSTRACT

BACKGROUND: Probe-based confocal laser endomicroscopy (pCLE) is a novel method for in vivo histological analysis of colorectal neoplasm mucosa, which provides meaningful information for the development of adequate therapeutic strategies. However, the in vivo histology of colorectal neoplasm submucosa has not been studied. We assessed the feasibility and safety of pCLE for evaluating colorectal submucosa, and identified and validated diagnostic criteria for submucosal carcinoma infiltration. METHODS: From March to July 2014, 83 pCLE videos of 51 lesions in 31 patients who underwent scheduled colonoscopic procedures for the removal of colorectal neoplasms were acquired consecutively. During the procedures, pCLE videos of the lesions and biopsy samples for histopathological analysis were acquired. Final histopathological results were used as the gold standard. RESULTS: Based on the confocal pattern, we classified colorectal submucosa findings as negative (superficial submucosa, deep submucosa, and submucosa with fibrosis) or indicative of carcinoma infiltration. Dark and irregular cell nests with irregular cell architecture and little or no mucin were seen in submucosal carcinoma infiltration. Based on rates of correlation with pathological findings, the sensitivity, specificity, and accuracy of the classification of submucosal carcinoma infiltration by two observers were 91.7, 86.8, and 88.0 %, respectively. In addition, the results showed good interobserver agreement for the detection of submucosal carcinoma infiltration (κ = 0.757, standard error = 0.102). No adverse events occurred during the procedures. CONCLUSIONS: Submucosa assessment by pCLE is feasible and safe. pCLE is useful for the differentiation of normal submucosa from carcinoma infiltration, particularly when infiltration is accompanied by severe fibrosis. Large-scale prospective studies are needed to further evaluate the clinical impact of the use of pCLE during endoscopy. More... »

PAGES

594-601

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00464-016-5003-x

DOI

http://dx.doi.org/10.1007/s00464-016-5003-x

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1032665151

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/27324335


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44 schema:description BACKGROUND: Probe-based confocal laser endomicroscopy (pCLE) is a novel method for in vivo histological analysis of colorectal neoplasm mucosa, which provides meaningful information for the development of adequate therapeutic strategies. However, the in vivo histology of colorectal neoplasm submucosa has not been studied. We assessed the feasibility and safety of pCLE for evaluating colorectal submucosa, and identified and validated diagnostic criteria for submucosal carcinoma infiltration. METHODS: From March to July 2014, 83 pCLE videos of 51 lesions in 31 patients who underwent scheduled colonoscopic procedures for the removal of colorectal neoplasms were acquired consecutively. During the procedures, pCLE videos of the lesions and biopsy samples for histopathological analysis were acquired. Final histopathological results were used as the gold standard. RESULTS: Based on the confocal pattern, we classified colorectal submucosa findings as negative (superficial submucosa, deep submucosa, and submucosa with fibrosis) or indicative of carcinoma infiltration. Dark and irregular cell nests with irregular cell architecture and little or no mucin were seen in submucosal carcinoma infiltration. Based on rates of correlation with pathological findings, the sensitivity, specificity, and accuracy of the classification of submucosal carcinoma infiltration by two observers were 91.7, 86.8, and 88.0 %, respectively. In addition, the results showed good interobserver agreement for the detection of submucosal carcinoma infiltration (κ = 0.757, standard error = 0.102). No adverse events occurred during the procedures. CONCLUSIONS: Submucosa assessment by pCLE is feasible and safe. pCLE is useful for the differentiation of normal submucosa from carcinoma infiltration, particularly when infiltration is accompanied by severe fibrosis. Large-scale prospective studies are needed to further evaluate the clinical impact of the use of pCLE during endoscopy.
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