Deep learning to find colorectal polyps in colonoscopy: a systematic literature review
Publication date: Available online 1 August 2020Source: Artificial Intelligence in MedicineAuthor(s): Luisa F. Sánchez-Peralta, Luis Bote-Curiel, Artzai Picón, Francisco M. Sánchez-Margallo, J. Blas Pagador
WEDNESDAY, Sept. 30, 2020 -- Many patients with biopsy-confirmed advanced colorectal polyps are unaware of their need for repeat colonoscopy as well as the proper surveillance interval, according to a study recently published in the Journal of...
CONCLUSION: This study provides additional evidence of the association between low fruit and vegetable consumption and colorectal polyps. Enhancing people fiber eating behavior may help preventing colorectal cancer risk. PMID: 32986375 [PubMed - as supplied by publisher]
A 64-year-old man presented with large colon polyp detected by screening colonoscopy. The colonoscopy showed a 20-mm pedunculated polyp with a thick and bulging stalk in the sigmoid colon (Figure A). Endoscopic ultrasonography revealed that the stalk consisted of a low echoic structure in the submucosa, considering of a cystic component (Figure B, arrows). Although the polyp was suspected of an invasive cancer, biopsies from the polyp head revealed tubular adenoma. Endoscopic resection was performed for pathological diagnosis and local treatment at the patient ’s request.
Conclusion: We developed and compared five models for the detection of lesions in white light endoscopic images. ResNet50 showed the optimal performance, and Mask R-CNN model could be used to locate and classify lesions in images containing lesions. PMID: 32952602 [PubMed - in process]
We report the case of a 59-year-old male who underwent a screening colonoscopy after a positive fecal occult blood test. Several polyps were removed during the colonoscopy: two pedunculated tubular adenomas of 7 mm, a tubular adenoma with high-grade dysplasia of 25 mm and a pedunculated polyp of 20 mm in the descending colon. Histopathological analysis of the pedunculated polyp revealed a well-differentiated adenocarcinoma (G1) with a mucinous component that invaded the submucosa (T1). The resection margins were less than 1 mm, lymphovascular invasion was present and high budding (10 or more) with an invasive component of ...
The objective of this cl...
We read with interest the article by Turse et al.1 The authors report, in a retrospective study, that deep sedation (DS) had no benefit compared with moderate sedation (MS) for adenoma detection rate (ADR) and polyp detection rate (PDR) in average-risk patients undergoing screening colonoscopy for colorectal cancer. The study populations were similar for both groups, including relatively healthy patients. A highlighted strength of the study was that the focus on average-risk patients examined at the same center minimized possible confounding factors of prior investigations.
Colonoscopy screening comes with a significant cost. If you sum up the costs due to health care personnel, endoscopy technology, facilities, and histopathology, colonoscopy is among the most expensive diagnostic procedures, with estimates comparable with whole-body CT or magnetic resonance imaging. When these costs are projected at population level, the absolute magnitude is exceptional, inasmuch as it is estimated to correspond to an annual gross expenditure of more than U.S. $775 million.1
Conclusion Incomplete polyp resection was frequent after polypectomy in routine clinical practice. Serrated histology and proximal location were independent risk factors for incomplete resection. The performance of board-certified gastroenterologists was not superior to that of trainees. [...] Georg Thieme Verlag KG Rüdigerstraße 14, 70469 Stuttgart, GermanyArticle in Thieme eJournals: Table of contents | Abstract | Full text
Conclusions Gastroenterologists have strong interest in the application of AI to colonoscopy, particularly with regard to CADe for polyp detection. The primary concerns were its cost, potential to increase procedural time, and potential to develop operator dependence. Future developments in AI should prioritize mitigation of these concerns. [...] Georg Thieme Verlag KG Rüdigerstraße 14, 70469 Stuttgart, GermanyArticle in Thieme eJournals: Table of contents | Abstract | open access Full text