Original Article

Endoscopic Mucosal Resection for Colonic Mucosal Neoplasia and Evaluation of Long-Term Recurrence: A Single-Center Experience of 500 Cases

Authors: Saeed Ali, MD, Neelam Khetpal, MD, Evgeny Idrisov, MD, Asad Ur Rahman, MD, Sameen Khalid, MD, Yuan Du, MS, Udayakumar Navaneethan, MD, Shyam Varadarajulu, MD, Robert Hawes, MD, Muhammad Khalid Hasan, MD


Objectives: Endoscopic mucosal resection (EMR) is an alternative to surgery for the treatment of large laterally spreading lesions. Residual or recurrent adenoma is a major limitation. This study aimed to quantify early and late recurrences and to assess its associated risk factors.

Methods: The study was a single-center, multiendoscopist, longitudinal study conducted between January 1, 2013 and April 26, 2017. A total of 480 patients with 500 polyps who underwent an endoscopic resection were included. Surveillance colonoscopy (SC) was performed at 4 to 6 months (SC1) and 16 to 18 months (SC2).

Results: At SC1, early recurrence was noted in 77 of 354 (21.8%) lesions; 76 (98.7%) were treated endoscopically. The remaining 277 of 354 (78.2%) lesions had no recurrence at SC1; only 41 lesions (15%) were followed up at SC2. Recurrence at SC2 was found in 4 lesions (9.8%), all of which were treated endoscopically. Lesion size >40 mm was associated with recurrence. Recurrence at both SC1 and SC2 was successfully treated endoscopically in 78 of 81 lesions (96.3%).

Conclusions: EMR is an effective, minimally invasive technique for the treatment of large laterally spreading lesions. Although recurrence is a concern, its risk is low (21.8% on SC1 and 9.8% on SC2) and was managed endoscopically in 96.3% cases on follow-up endoscopy.
Posted in: Colonic And Anorectal Disease5

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