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Song, Louis M. Wong Kee

https://orcid.org/0000-0001-7053-0427

Mayo Clinic

Mayo Clinic

Citations 45

Patient Characteristics and Outcomes of Endoscopically Placed Dedicated Transgastric Jejunal Tubes Compared to Percutaneous Endoscopic Gastrostomy With Jejunal Extension Tubes
Kek, Laura , Bruining, David H. , Buttar, Navtej , Harmsen, William S. , Song, Louis M. Wong Kee , Kek, Laura D , Buttar, Navtej S, Abou Zeid, Hadi, Wong Kee Song, Louis M, Zeid, Hadi Khaled Abou , Storm, Andrew C. , Coelho–Prabhu, Nayantara

DEN Open | September 26, 2025 | Volume: 6 | Issue: 1 | Pages: No page available

10.1002/deo2.70213 Get It

ABSTRACT Objectives Patients requiring long‐term enteral nutrition or continuous infusion of carbidopa/levodopa can benefit from jejunostomy tube placement. Recently, directly placed percutaneous transgastric jejunal tubes (TGJs) have been used instead of gastrostomy tubes with jejunal extensions (PEG‐Js) for enteral access. We aim to compare patient characteristics and outcomes after placement of TGJs placed via the introducer technique compared to PEG‐Js. Methods We performed a retrospective study of 141 patients (TGJ = 58, PEG‐J = 83) assessed at Mayo Clinic between 2010 and 2024. Patients were identified using a prospectively maintained procedure data registry. Demographic data, patient characteristics, procedural indications, complications, and first‐replacement date were gathered. Statistical analysis included the Wilcoxon rank sum test, chi‐square test, Fisher's exact test, and Kaplan‐Meier estimates. Patients receiving carbidopa/levodopa were excluded from complications analysis due to the carbidopa/levodopa tube's proprietary structure. A p ‐value of <0.05 was set as a threshold for significance. Results Our results demonstrated no difference in cumulative incidence of complications within 1 year for TGJs and PEG‐Js, p ‐value 0.48. Regarding time to first replacement, treating death as a competing risk factor, there was no statistically significant difference in cumulative incidence of replacement within 1 year for TGJs and PEG‐Js, p ‐value 0.389. Conclusions Our study demonstrates that both direct TGJs and PEG‐Js are safe options for long‐term jejunal feeding. More studies are needed to compare endoscopic to radiologically placed percutaneous transgastric jejunal feeding tubes.
Functional Lumen Imaging Probe as Part of Multimodality Assessment of Esophagogastric Junction Opening Is Important in Longitudinal Follow‐Up of Patients With Treated Achalasia
Kamboj, Amrit K. , Sood, Shubham , Truong, Brandon , Song, Louis M. Wong Kee , Wells, Michael , Wigle, Dennis A. , Codipilly, Don C. , Snyder, Diana L. , Alexander, Jeffrey A., Leggett, Cadman L. , Lennon, Ryan J. , Koop, Andree , Vela, Marcelo F. , Wigle, Dennis, Vela, Marcelo F , Leggett, Cadman L , Alexander, Jeffrey A., Ravi, Karthik

Neurogastroenterology & Motility | July 15, 2025 | Volume: 37 | Issue: 12 | Pages: No page available

10.1111/nmo.70121 Get It

ABSTRACT Background Functional lumen imaging probe (FLIP) utility is established in treatment‐naïve achalasia but less clear following lower esophageal sphincter (LES) directed therapy. Methods Achalasia patients with LES directed therapy across three tertiary care centers between 2017 and 2024 with post‐treatment FLIP and timed barium esophagram (TBE) were retrospectively identified. Reduced esophagogastric junction (EGJ) opening was defined by distensibility index (DI) < 2 mm 2 /mmHg and diameter < 12 mm. Abnormal emptying on TBE was defined as column height ≥ 5 cm at 5 min and/or retained tablet. Eckardt scores ≤ 3 defined clinical response. Key Results The study included 222 patients (46% peroral endoscopic myotomy, 46% laparoscopic Heller myotomy, 8% pneumatic dilation) with a median of 1.4 years to post‐treatment TBE/FLIP. Abnormal emptying on TBE was associated with a narrower median EGJ diameter (13.2 vs. 14.8 mm, p = 0.008), a greater frequency of EGJ diameter < 12 mm (36% vs. 21%, p = 0.012), and a smaller change in EGJ diameter (+4.6 vs. +8.6 mm, p = 0.002). Abnormal emptying on TBE occurred more frequently in patients with EGJ DI < 2 mm 2 /mmHg (8.5% vs. 2.6%, p = 0.052), but was not associated with median EGJ DI (4.5 vs. 5.1 mm 2 /mmHg, p = 0.29) nor median change in EGJ DI (+2.9 vs. +3.9 mm 2 /mmHg, p = 0.25). Patients with reduced EGJ DI or EGJ diameter more often had abnormal TBE (37% vs. 22%, p = 0.012). Only the change in DI (+3.8 vs. +1.5 mm 2 /mmHg, p = 0.012) and diameter (+8.2 vs. +1.6 mm, p = 0.002) on FLIP was associated with a clinical response based on Eckardt ≤ 3. Conclusions and Inferences FLIP following achalasia therapy generally correlates with TBE, although discrepant findings are not uncommon. In particular, FLIP EGJ‐diameter has a strong association with esophageal emptying on TBE. Both TBE and FLIP have limited association with clinical response based on Eckardt, with change in DI and diameter on FLIP most strongly associated. Consequently, FLIP as part of multimodal assessment appears useful in the longitudinal follow‐up of treated achalasia.
Peroral plication of the esophagus as a treatment option for end-stage achalasia with sump formation
Alexander, Ryan , Song, Louis M. Wong Kee , Nehra, Avinash , Alexander, Jeffrey A. , Codipilly, Don C. , Alexander, Ryan G , Wong Kee Song, Louis M, Blackmon, Shanda , Ravi, Karthik

Diseases of the Esophagus | March 31, 2025 | Volume: 38 | Issue: 2 | Pages: No page available

10.1093/dote/doaf013 Get It

Summary Introduction Peroral plication of the esophagus (POPE) can reduce sump size and improve symptoms in end-stage achalasia. However, its long-term efficacy and safety are unknown. Methods Patients with end-stage achalasia who underwent POPE at our institution (2016–2024) were identified. Data were abstracted for patient demographics, procedural details, and clinical and radiographic outcomes. Results Twelve patients underwent POPE. The technical success rate was 100%, with mean procedural time of 57 minutes and without adverse events. Symptomatic improvement occurred in 75% of patients (mean follow-up of 15 months), while 86% had radiographic improvement in sump size. Repeat POPE in 6 (50%) patients a mean of 2.6 years after index POPE and a third POPE in four (33%) patients a mean of 3.1 years later was performed, with similar technical success rates and outcomes to the index POPE. Conclusions POPE is a safe and repeatable long-term therapeutic option in end-stage achalasia.
The Bleeding Sunflower Polyp: A Rare Sequelae of Over-the-Scope Clip Placement
Ramkissoon, Resham­ , Song, Louis M. Wong Kee , Coelho–Prabhu, Nayantara

American Journal of Gastroenterology | February 4, 2024 | Volume: 119 | Issue: 6 | Pages: 1015-1015

10.14309/ajg.0000000000002692 Get It

Faculty Opinions recommendation of Long versus short peroral endoscopic myotomy for the treatment of achalasia: results of a non-inferiority randomised controlled trial.
Song, Louis M. Wong Kee

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature | September 21, 2023 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.3410/f.742616619.793600844 Get It

Comparing Open Versus Rigid Endoscopic and Flexible Endoscopic Techniques for the Treatment of Zenker's Diverticulum
Wallerius, Katherine P. , O’Byrne, Thomas J., Aden, Aisha A. , Peraza, Lazaro R. , Xie, Katherine , Richards, Bradley A. , El‐Badaoui, Joseph, Bayan, Semirra L. , Song, Louis M. Wong Kee , Ekbom, Dale C. , O'Byrne, Thomas J, Xie, Katherine Z , Wong Kee Song, Louis M, Bayan, Semirra , Bowen, Andrew J.

Otolaryngology–Head and Neck Surgery | March 12, 2023 | Volume: 169 | Issue: 4 | Pages: 962-970

10.1002/ohn.318 Get It

AbstractObjectiveTo describe the outcomes of patients undergoing open stapler versus transoral rigid and flexible endoscopic therapies for symptomatic Zenker's diverticulum.Study DesignSingle institution retrospective review.SettingTertiary care academic hospital.MethodsWe retrospectively evaluated the outcomes of 424 consecutive patients who underwent Zenker's diverticulotomy via an open stapler, rigid endoscopic CO2 laser, rigid endoscopic stapler, rigid endoscopic harmonic scalpel, or flexible endoscopic technique from January 2006 to December 2020.ResultsA total of 424 patients (173 females, mean age 73.1 ± 11.2 years) from a single institution were included. A total of 142 patients (33%) underwent endoscopic laser treatment, 33 (8%) underwent endoscopic harmonic scalpel, 92 (22%) underwent endoscopic stapler, 70 (17%) underwent flexible endoscopic, and 87 (20%) underwent open stapler. All open and rigid endoscopic procedures and most of the flexible endoscopic procedures (65%) were performed under general anesthesia. The flexible endoscopic group had a higher percentage of procedure‐related perforation, defined as subcutaneous emphysema or contrast leak on imaging (14.3%). The recurrence rates were higher in the harmonic stapler, flexible endoscopic, and endoscopic stapler groups at 18.2%, 17.1%, and 17.4%, respectively, and lower in the open group (1.1%). Length of hospital stay and return to oral intake were similar among groups.ConclusionThe flexible endoscopic technique was associated with the highest rate of procedure‐related perforation, while the endoscopic stapler had the lowest number of procedural complications. Recurrence rates were higher among the harmonic stapler, flexible endoscopic, and endoscopic stapler groups and lower in the endoscopic laser and open groups. Prospective comparative studies with long‐term follow‐up are needed.
Faculty Opinions recommendation of Endoscopic pyloromyotomy for the treatment of severe and refractory gastroparesis: a pilot, randomised, sham-controlled trial.
Song, Louis M. Wong Kee

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature | November 8, 2022 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.3410/f.742068413.793596364 Get It

Gastrointestinal defect closure using a novel through-the-scope helix tack and suture device compared to endoscopic clips in a survival porcine model (with video)
Hernandez, Ariosto, Marya, Neil B. , Sawas, Tarek , Rajan, Elizabeth , Gades, Naomi M. , Song, Louis M. Wong Kee , Buttar, Navtej , Wong Kee Song, Louis M, Hernandez, Ariosto, Marya, Neil B. , Dayyeh, Barham K. Abu , Storm, Andrew C.

Endoscopy International Open | May 4, 2022 | Volume: 09 | Issue: 04 | Pages: C12-C12

10.1055/a-1834-5697 Get It

Faculty Opinions recommendation of Impact of artificial intelligence on miss rate of colorectal neoplasia.
Song, Louis M. Wong Kee

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature | April 21, 2022 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.3410/f.741817056.793592532 Get It

Endoscopic submucosal dissection for colorectal dysplasia in inflammatory bowel disease: a US multicenter study
Ngamruengphong, Saowanee , Aihara, Hiroyuki , Friedland, Shai , Benias, Petros C. , Draganov, Peter V. , Kumta, Nikhil A. , Borman, Zachary A. , Dixon, Rebekah E. , Marion, James F., Tomizawa, Yutaka , Mohapatra, Sonmoon , Charabaty, Aline , Lazarev, Mark , Figueroa, Esteban, Hanada, Yuri , Song, Louis M. Wong Kee , Wong Kee Song, Louis M, Nishimura, Makoto , Faleck, David M. , Yang, Dennis J. , D'Souza, Lionel S. , Jit, Simran, Parian, Alyssa M. , Wang, Andrew Y.

Endoscopy International Open | April 14, 2022 | Volume: 10 | Issue: 04 | Pages: E354-E360

10.1055/a-1783-8756 Get It

Abstract Background and study aims In patients with inflammatory bowel disease (IBD), endoscopically visible lesions with distinct borders can be considered for endoscopic resection. The role of endoscopic submucosal dissection (ESD) for these lesions is not well defined because of a paucity of data. We aimed to evaluate the outcomes of colorectal ESD of dysplastic lesions in patients with IBD across centers in the United States. Patients and methods This was a retrospective analysis of consecutive patients with IBD who were referred for ESD of dysplastic colorectal lesions at nine centers. The primary endpoints were the rates of en bloc resection and complete (R0) resection. The secondary endpoints were the rates of adverse events and lesion recurrence. Results A total of 45 dysplastic lesions (median size 30mm, interquartile range [IQR] 23 to 42 mm) in 41 patients were included. Submucosal fibrosis was observed in 73 %. En bloc resection was achieved in 43 of 45 lesions (96 %) and R0 resection in 34 of 45 lesions (76 %). Intraprocedural perforation occurred in one patient (2.4 %) and was treated successfully with clip placement. Delayed bleeding occurred in four patients (9.8 %). No severe intraprocedural bleeding or delayed perforation occurred. During a median follow-up of 18 months (IQR 13 to 37 months), local recurrence occurred in one case (2.6 %). Metachronous lesions were identified in 11 patients (31 %). Conclusions ESD, when performed by experts, is safe and effective for large, dysplastic colorectal lesions in patients with IBD. Despite the high prevalence of submucosal fibrosis, en bloc resection was achieved in nearly all patients with IBD undergoing ESD. Careful endoscopic surveillance is necessary to monitor for local recurrence and metachronous lesions after ESD.