以下为句子列表：
英文: Chordoma should be included in the differential diagnosis of a dumbbell-shaped mass involving upper cervical vertebrae in patients with long duration of symptoms.
中文: 若病人在上颈椎呈现哑铃状肿块及患有长期症状时，脊索瘤应列入鉴别诊断中。
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英文: with open fields or with the 0° wedge,9% isodose curve couldn't cover the postzone of pharyngolargnycal or the prozone of cervical vertebrae body,and CI were low;
中文: 不加楔形板、加0°楔形板时,9%的等剂量曲线不能覆盖部分咽喉后部、颈椎椎体前缘,C I低;
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