Surgery may need to be considered if conservative treatment is not working.
如果保守治疗无效的话，可能需要手术来解决。
When conservative treatment is difficult to obtain relief, the majority of patients need surgery.
保守治疗症状很难得到缓解，大部分患者需要手术治疗。
When conservative treatment is difficult to obtain relief, the majority of patients need surgery.
保守治疗症状很难得到缓解，大部分患者需要手术治疗。
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