支气管肺癌的发病率近年来有所增高。为了争取早期准确诊断,经皮针吸肺活检术(以下简称NB)的应用渐见广泛。NB 是在放射线定位后,用细针头通过皮肤经胸腔刺入病变作针吸活检。因为它快速、简便、痛苦小、费用少、又有高度准确性,故值得推广应用。1883年Leyden 首先对肺炎病人作肺诊断性穿刺以吸取细菌。1886年Menefrier 用针吸活检诊断肺癌。Marfin 等于1934年系统介绍了针吸技术,此后相继有许多报告发表。早期,活检常是盲目的或在笨重的放射线设备下进行,而且没有适合的穿刺针头,气胸及出血等并发症常有发生,因此未能被推广。当时有的学者认为只能有限制地应用于病变较大,靠近胸膜,而又不能于手术切除的病人。最近十年来,由于下述原因:①放射学 The incidence of bronchial lung cancer has increased in recent years. In order to obtain accurate early diagnosis, percutaneous needle biopsy (hereinafter referred to as NB) is widely used. NB is in the radioactive positioning, with a thin needle through the skin thoracostomy needle aspiration biopsy. Because of its fast, easy, painful, low cost, and a high degree of accuracy, it is worth promoting application. In 1883, Leyden first performed lung diagnostic puncture on pneumonia patients to absorb bacteria. 1886 Menefrier needle aspiration biopsy diagnosis of lung cancer. Marfin is equivalent to needle aspiration system introduced in 1934, since then have many reports published. Early, biopsy is often blind or under bulky radiographic equipment, and there is no suitable needle, pneumothorax and bleeding and other complications often occur and therefore can not be promoted. At that time, some scholars thought that they could only be applied to patients with larger lesions, close to the pleura, and could not be surgically removed. The past decade, due to the following reasons: ① radiology