Peroral endoscopic myotomy (POEM) is a newly developed endoscopic intervention for esophageal achalasia. We present a case of a patient undergoing a POEM who suffered hemodynamic collapse due to pneumomediastinum and massive pneumoperitoneum requiring emergent needle decompression.
Key words: Pneumomediastinum, mediastinal emphysema, subcutaneous emphysema, pneumoperitoneum, hypercapnia, tension pneumoperitoneum, endoscopy, esophagogastroduodenoscopy, peroral endoscopic myotomy
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