Abstract
A 65-year-old man was admitted to our hospital complaining of reflux for more than 20 years. After endoscopy and barium-swallow examination, he was diagnosed with achalasia as well as a squamous cell carcinoma. Therefore, peroral endoscopic myotomy (POEM) combined with endoscopic submucosal dissection (ESD) was performed simultaneously. During the procedure, a mucosal erosion with a clear boundary was shown in the middle segment of the esophagus. ESD was first performed and the lesion was removed en-bloc. Subsequent POEM therapy was performed after marking the left esophageal wall 10cm above the cardia. After submucosal injection, the submucosal plane was created through a length 2cm longitudinal incision, then the muscle was cut a length of 10 cm into the esophagus and 2 cm below the cardia, and finally the incision was closed by clips. Pathological examination revealed high-grade intraepithelial neoplasia of squamous epithelium (carcinoma in situ) with a negative margin. The patient was recovered without complication four days after the procedure. The endoscopy showed perfect healing of the esophageal lesions during two-months follow-up , and the reflux symptom was resolved.
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