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Endoscopic photodynamic therapy (PDT) for Barrett's oesophagus with high-grade dysplasia or early carcinoma is undertaken after full investigation. Endoscopic assessment is mandatory to determine the extent of the Barrett's segment and neoplastic changes. Photofrin at 2mg/kgbw is used, followed 24–72h later by illumination of 630nm light, 200J/cm of lesion. The whole of the Barrett's segment should...
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