title: Complication during endoscopic electrosurgical polypectomy at the gastric cardia.
mesh_terms: D003964:Diaphragm; D004562:Electrocardiography; D004564:Electrocoagulation / Q000009:adverse effects; D004598:Electrosurgery / Q000009:adverse effects*; D004724:Endoscopy / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009119:Muscle Contraction; D011127:Polyps / Q000601:surgery*; D013035:Spasm / Q000209:etiology*; D013274:Stomach Neoplasms / Q000601:surgery*