Efficacy and safety of photodynamic therapy using an ultra-thin endoscope for local failure with esophageal stenosis after chemoradiotherapy for esophageal cancer
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Background: Photodynamic therapy (PDT) is a salvage endoscopic treatment option for local failure after chemoradiotherapy for esophageal squamous cell carcinoma (ESCC). PDT is usually performed using ordinary-sized conventional e... ...
