Georgios Mavrogenis
YOU?
Author Swipe
View article: Anchor-pronged clip–assisted countertraction in submucosal tunneling endoscopic resection and endoscopic submucosal dissection: a novel technique for submucosal tumors
Anchor-pronged clip–assisted countertraction in submucosal tunneling endoscopic resection and endoscopic submucosal dissection: a novel technique for submucosal tumors Open
View article: Peroral endoscopic tunneling under saline combined with partial myotomy for hypercontractile esophagus
Peroral endoscopic tunneling under saline combined with partial myotomy for hypercontractile esophagus Open
View article: Endoscopic Local Excision (ELE) with Knife-Assisted Resection (KAR) Techniques Followed by Adjuvant Radiotherapy and/or Chemotherapy for Invasive (T1bsm2,3/T2) Early Rectal Cancer: A Multicenter Retrospective Cohort
Endoscopic Local Excision (ELE) with Knife-Assisted Resection (KAR) Techniques Followed by Adjuvant Radiotherapy and/or Chemotherapy for Invasive (T1bsm2,3/T2) Early Rectal Cancer: A Multicenter Retrospective Cohort Open
Background: Resected rectal polyps with deep invasion into the submucosa (pT1b-sm2,3) or the muscle layer (pT2) are currently confronted with surgery due to non-curative resection. Aims: We evaluated the efficacy, safety, and locoregional …
View article: Underwater Techniques in Gastrointestinal Endoscopy: Diving into the Depths
Underwater Techniques in Gastrointestinal Endoscopy: Diving into the Depths Open
The endoscopic resection of gastrointestinal tract lesions embraces different types of techniques, ranging from conventional polypectomy/endoscopic mucosal resection (EMR) to the field of third-space endoscopy, including endoscopic submuco…
View article: Proteomic and transcriptomics profiles of serum selenium concentrations in patients with heart failure are associated with immunoregulatory processes
Proteomic and transcriptomics profiles of serum selenium concentrations in patients with heart failure are associated with immunoregulatory processes Open
Funding Acknowledgements Type of funding sources: Public grant(s) – National budget only. Main funding source(s): Dutch Research Council, through the Open Competition ENW-KLEIN grant Background Low selenium concentrations are associated wi…
View article: Submucosal tunneling endoscopic resection in retroflexion for gastric gastrointestinal stromal tumor of the fundus
Submucosal tunneling endoscopic resection in retroflexion for gastric gastrointestinal stromal tumor of the fundus Open
Endoscopic resection of gastrointestinal stromal tumors of the fundus is challenging due to the need for full-thickness resection and the difficulties of defect closure. Submucosal tunneling under direct view through the esophagus can be c…
View article: Tunnel-free peroral endoscopic myotomy reduces procedural time and maintains efficacy in Zenker’s diverticulum
Tunnel-free peroral endoscopic myotomy reduces procedural time and maintains efficacy in Zenker’s diverticulum Open
In this study, modified Z-POEM techniques utilizing single-tunnel or tunnel-free approaches, combined with over-the-septum mucosotomy and deep esophageal myotomy (2 cm), demonstrated feasibility, safety and a significantly shorter procedur…
View article: Results of the COLDWATER randomized controlled trial: enhanced performance of underwater cold snare polypectomy for colorectal polyps 5-10 mm, independent of endoscopist experience
Results of the COLDWATER randomized controlled trial: enhanced performance of underwater cold snare polypectomy for colorectal polyps 5-10 mm, independent of endoscopist experience Open
UCSP achieves a more extensive excision of the muscularis mucosa compared to CCSP, even though it does not attain a deeper excision. Additionally, UCSP shows a higher en bloc resection rate, with lower rates of IRR, and emerg…
View article: Peroral endoscopic myotomy for Zenker’s diverticulum without tunneling
Peroral endoscopic myotomy for Zenker’s diverticulum without tunneling Open
Peroral endoscopic myotomy (POEM) is an increasingly adopted strategy for the treatment of Zenker’s diverticulum ([Fig. 1]). The Z-POEM technique allows for a deep incision of the cricopharyngeal muscle up to its transition to the esophage…
View article: Single-tunnel Zenker’s diverticulum peroral endoscopic myotomy
Single-tunnel Zenker’s diverticulum peroral endoscopic myotomy Open
Zenker’s diverticulum peroral endoscopic myotomy (zPOEM) revolutionized the endoscopic treatment of Zenker’s diverticulum, since this is the only method that can provide deep myotomy [1]. Historically, the mucosal entrance was initially ma…
View article: Peroral endoscopic myotomy for Zenker’s diverticulum without tunneling
Peroral endoscopic myotomy for Zenker’s diverticulum without tunneling Open
Peroral endoscopic myotomy (POEM) is an increasingly adopted strategy for the treatment of Zenker's diverticulum ([Fig. 1]). The Z-POEM technique allows for a deep incision of the cricopharyngeal muscle up to its transition to the esophage…
View article: Salvage endoscopic wide-field full-thickness resection of T2 rectal cancer with endoscopic submucosal dissection instruments, without defect closure
Salvage endoscopic wide-field full-thickness resection of T2 rectal cancer with endoscopic submucosal dissection instruments, without defect closure Open
A 86-year-old woman was referred for recurrent bleeding secondary to a 4-cm cT2N0 cancer of the distal rectum ([Fig. 1]). Tumor staging was negative for metastasis. She had a history of severe aortic stenosis and atrial fibrillation under …
View article: Performance of endoscopic submucosal dissection for undifferentiated early gastric cancer: a multicenter retrospective cohort
Performance of endoscopic submucosal dissection for undifferentiated early gastric cancer: a multicenter retrospective cohort Open
Background and study aims Undifferentiated early gastric cancer (UD-EGC) represents an extended indication for endoscopic submucosal dissection (ESD) based on the existing guidelines. This study evaluated the prevalence of UD-EGC recurrenc…
View article: Submucosal tunneling endoscopic resection for rectal gastrointestinal stromal tumor
Submucosal tunneling endoscopic resection for rectal gastrointestinal stromal tumor Open
A 60-year-old man was referred for evaluation of a rectal submucosal tumor located 5 cm proximal to the anus ([Video 1, ] [Fig. 1]). Endoscopic ultrasonography revealed a 3-cm hypoechoic lesion originating from the muscular layer. The pati…
View article: Single-tunnel Zenker’s diverticulum peroral endoscopic myotomy
Single-tunnel Zenker’s diverticulum peroral endoscopic myotomy Open
Zenker's diverticulum peroral endoscopic myotomy (zPOEM) revolutionized the endoscopic treatment of Zenker's diverticulum, since this is the only method that can provide deep myotomy [1]. Historically, the mucosal entrance was initially ma…
View article: Underwater endosonography (uEUS) for enhancement of small mucosal and submucosal gastrointestinal lesions
Underwater endosonography (uEUS) for enhancement of small mucosal and submucosal gastrointestinal lesions Open
Water immersion of gastrointestinal (GI) mucosal lesions is a reliable method to ensure the safety and completeness of resection without the need for a submucosal fluid cushion [1]. Further, this method may improve endoscopic optics by pro…
View article: Short benign ileocolonic anastomotic strictures - management with bi-flanged metal stents: Six case reports and review of literature
Short benign ileocolonic anastomotic strictures - management with bi-flanged metal stents: Six case reports and review of literature Open
The evolving role of interventional endoscopy and the availability of LAMSs provide patients with minimally invasive treatment options, allowing them to avoid more invasive surgical interventions. The BFMS (NAGI stent) is longer and larger…
View article: Subepithelial tumors: How does endoscopic full-thickness resection & submucosal tunneling with endoscopic resection compare with laparoscopic endoscopic cooperative surgery?
Subepithelial tumors: How does endoscopic full-thickness resection & submucosal tunneling with endoscopic resection compare with laparoscopic endoscopic cooperative surgery? Open
Background and study aims Endoscopic techniques are rapidly emerging for resection of subepithelial tumors (SETs). Submucosal tunneling for endoscopic resection (STER), endoscopic full-thickness resection (EFTR) and laparoscopic endoscopic…
View article: Bidirectional recanalization of a complete postradiation stricture of the hypopharynx and esophagus.
Bidirectional recanalization of a complete postradiation stricture of the hypopharynx and esophagus. Open
A 65-year-old patient was referred for endoscopic management of a complete radiation-induced stricture, 5 cm in length, of the hypopharynx and esophagus ([Fig. 1], [Video 1]). He had a history of curative chemoradiation therapy for T2N1 sq…
View article: Endoscopic submucosal dissection of a large cecal polyp involving the ileocecal valve and the terminal ileum
Endoscopic submucosal dissection of a large cecal polyp involving the ileocecal valve and the terminal ileum Open
An 83-year-old man with no significant medical history was referred for endoscopic submucosal dissection (ESD) of a large cecal polyp involving the ileocecal valve and the terminal ileum ([Fig. 1 a]). The strategy of dissection included th…
View article: Improved Designs on the New Type of Pipe Called Batch Heated and Channeled Pipe (Bhcp) for Upgrading its Heat Transfer Efficiency
Improved Designs on the New Type of Pipe Called Batch Heated and Channeled Pipe (Bhcp) for Upgrading its Heat Transfer Efficiency Open
View article: In the thick of it: peroral endoscopic myotomy with intramuscular tunneling in end-stage achalasia
In the thick of it: peroral endoscopic myotomy with intramuscular tunneling in end-stage achalasia Open
View article: The learning experience for endoscopic submucosal dissection in a non-academic western hospital: a single operator’s untutored, prevalence-based approach
The learning experience for endoscopic submucosal dissection in a non-academic western hospital: a single operator’s untutored, prevalence-based approach Open
ESD was safe and effective in a low-volume center, with an acceptable adverse events rate. At least 40 mixed cases were needed to achieve a high resection speed. Additive experience gained through other endosurgical procedures probably con…
View article: Wide-field endoscopic submucosal dissection for whole-antral and whole-incisura gastric multifocal dysplasia
Wide-field endoscopic submucosal dissection for whole-antral and whole-incisura gastric multifocal dysplasia Open
View article: Initial experience of G-POEM in Greece performed with a scissor-type knife and monitored by endoluminal functional imaging
Initial experience of G-POEM in Greece performed with a scissor-type knife and monitored by endoluminal functional imaging Open
View article: Use of a double-lumen cytology brush catheter to allow double-guidewire technique for endoscopic interventions
Use of a double-lumen cytology brush catheter to allow double-guidewire technique for endoscopic interventions Open
A modified cytology brush catheter can be used to deliver 2 guidewires simultaneously during ERCP and EUS procedures. This technique may improve procedural efficiency, maintain a safety track, and augment therapy in certain situations.
View article: Extrabiliary applications of fully covered antimigration biliary metal stents
Extrabiliary applications of fully covered antimigration biliary metal stents Open
Although off label, extrabiliary use of these stents can successfully address scenarios of complex luminal pathology. To compensate for the small stent caliber, two stents may be placed side by side in a double-barrel configuration. Strict…
View article: Dynamic and multifocal clip and band countertraction for endoscopic submucosal dissection
Dynamic and multifocal clip and band countertraction for endoscopic submucosal dissection Open
In conclusion, the clip and band technique is an efficient method of countertraction that can be applied even in the cecum. The main advantages of this technique are the ability to change the axis of countertraction during the procedure an…
View article: Endoscopic submucosal dissection and submucosal tunneling endoscopic resection for obstructive lipomas of the foregut and hindgut
Endoscopic submucosal dissection and submucosal tunneling endoscopic resection for obstructive lipomas of the foregut and hindgut Open
GI lipomas are rare, benign, submucosal tumors that are usually asymptomatic. The most common location for these lesions is the colon (64%), whereas duodenal lipomas account for only 4% of GI lipomas.1Wu C. Yang J.F. Tan Q. et al.En bloc r…
View article: “Posterior-like” anterior per-oral endoscopic myotomy
“Posterior-like” anterior per-oral endoscopic myotomy Open
Per-oral endoscopic myotomy (POEM) can be performed by an anterior or a posterior approach to the esophageal wall, depending on the operator's preference. Recent data, however, show that posterior POEM is faster in accomplishing myotomy an…