A method for treatment of esophageal high grade dysplasia comprising the steps of: injecting HPPH in a physiologically compatible medium into a patient having high grade dysplasia tissue to provide a dose level of 3 through 5 mg/m2 of body surface area, waiting for a time period of 24 through 60 hours to permit preferential absorption of the HPPH into esophageal cancer tissue, and exposing the esophageal cancer tissue to light at a wavelength of about 670 ± 5 nm at an energy of from about 75 to about 200 Joules/cm.
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机译：一种食道高度发育不良的治疗方法，包括以下步骤：将生理相容性介质中的HPPH注射到具有高度发育异常组织的患者中，以提供3至5 mg / m2体表面积的剂量水平，等待一段时间在24至60小时的时间段内，以允许HPPH优先吸收到食道癌组织中，并使食道癌组织暴露于波长为约670±5nm，能量为约75至约200焦耳/ cm 2的光。
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