肺错构瘤在人群中发病率0.25%，是肺内孤立性结节的第三大常见的病因，也是肺内最为常见的良性肿瘤。

Found in 0.25% of general population, pulmonary hamartoma is the third most common cause of solitary pulmonary nodules and the most common benign tumor of the lung.

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CT导引下肺穿刺切割活检术，是早期确诊肺孤立性结节的一种有效方法。

CT-guided percutaneous transthoracic cutting biopsy is a very valuable way, which diagnosed solitary pulmonary nodule earlier. It should be widely spreaded in the diagnosis of the lung nodulus.

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