Improved endoscopic resection of large flat lesions and early cancers using an external additional working channel (AWC): a case series
| Title: | Improved endoscopic resection of large flat lesions and early cancers using an external additional working channel (AWC): a case series |
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| Authors: | Benjamin Walter, Simone Schmidbaur, Yannick Krieger, Alexander Meining |
| Source: | Endoscopy International Open, Vol 07, Iss 02, Pp E298-E301 (2019) |
| Publisher Information: | Georg Thieme Verlag KG, 2019. |
| Publication Year: | 2019 |
| Collection: | LCC:Diseases of the digestive system. Gastroenterology |
| Subject Terms: | Diseases of the digestive system. Gastroenterology, RC799-869 |
| More Details: | Background En-bloc resection of large, flat lesions or early stages of cancer is challenging. No bimanual tasks are possible using standard endoscopes. Dual-channel endoscopes are not available everywhere and have a small distance between the channels. Patients and methods A new external additional working channel (AWC) (Ovesco, Tuebingen, Germany) was designed and developed potentially enabling bimanual tasks. Fixed to the tip of a standard gastroscope or pediatric colonoscope, a second endoscopic tool can be inserted through the AWC and used for tissue retraction during endoscopic resection. Results In the upper and lower gastrointestinal tract, endoscopic mucosal resection (EMR) with a modified grasp-and-snare technique and endoscopic submucosal dissection (ESD) were performed successfully using the AWC in eight patients. Complications were acute arterial bleeding post-EMR in two cases treated by endoscopic clipping. Conclusions We conclude that a newly developed external additional working channel (AWC) enables endoscopic resection of large lesions in the upper and lower gastrointestinal tract. Potential benefits are its suitability for EMR and ESD, no need for a dual-channel endoscope and an adjustable distance of working channels. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 2364-3722 2196-9736 0824-6912 |
| Relation: | https://doaj.org/toc/2364-3722; https://doaj.org/toc/2196-9736 |
| DOI: | 10.1055/a-0824-6912 |
| Access URL: | https://doaj.org/article/92177cb0b41f41699341afc020e5582d |
| Accession Number: | edsdoj.92177cb0b41f41699341afc020e5582d |
| Database: | Directory of Open Access Journals |
| ISSN: | 23643722 21969736 08246912 |
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| DOI: | 10.1055/a-0824-6912 |
| Published in: | Endoscopy International Open |
| Language: | English |