Comparison of the safety and efficacy of peroral endoscopic myotomy between octogenarians and non-octogenarians.

OBJECTIVES: This study compared the safety and efficacy of peroral endoscopic myotomy for esophageal motility disorders between octogenarians and non-octogenarians. METHODS: This retrospective observational study recruited 321 patients (28 octogenarians and 293 non-octogenarians) who underwent peroral endoscopic myotomy from two institutions. Clinical success (postoperative Eckardt score