肺癌

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　　肺癌按发生部位可分为两种类型。
    1、中央型：肺癌肿瘤长在段开口以上支气管，约占75%。
    2、周围型：肺癌肿瘤长在段开口以下支气管，约占25%。
    中央型肺癌也就是肿瘤长在段支气管、叶支气管或总支气管。因此容易产生咳嗽，以剧烈的阵发性刺激性咳嗽为多，无痰或仅有少量白色泡沫痰，在合并感染时可以有脓痰，同时还可有痰带血丝。随着肿瘤长大，可压迫周围组织，产生阻塞性肺炎或肺不张，引起发热。
    周围型肺癌因肿瘤长在周边肺，产生的症状较少，甚至没有咳嗽症状。经过积极抗炎治疗可以好转，咳嗽减轻，痰血消失，但要注意反复咳嗽、痰血，尤其40岁以上的病人，要去医院检查，以免延误病情。

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==== 汉译英 ====

Occurrence of lung cancer according to location can be divided into two types.
1, the central type: the tumor grew in the opening paragraph above bronchus, about 75%.
2, peripheral type: the tumor grew in the opening paragraph the following bronchus, about 25%.
Central lung cancer is the tumor grew in the segmental bronchus, bronchus or total bronchial leaves. Therefore prone to cough to severe paroxysmal cough for more than irritating, non-sputum or phlegm only a small amount of white foam, in the combined infection can Nong Tan, but can also have blood-streaked sputum with. As the tumors grow up, can be oppressive surrounding tissue, resulting in obstructive pneumonia or atelectasis, causing fever.
Peripheral lung cancer because the tumor grew in the peripheral lung, resulting in fewer symptoms, not even cough. After an active anti-inflammatory treatment can be improved to reduce cough, sputum blood disappeared, but should pay attention to repeated coughing, sputum blood, particularly in patients over 40 years of age, going to a hospital, so as not to delay treatment.