| http://www.w3.org/ns/prov#value | - geal cancer.PATIENTS AND METHODS: In 16 patients, seven factors were analyzed including age, gender, Karnofsky performance score (KPS), time from diagnosis of esophageal cancer to irradiation, number of brain metastases, histology, and presence of extracerebral metastases.RESULTS: Improved survival was significantly associated with KPS???80 (p<0.001), the presence of one brain metastasis (p=0.007)
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