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近二十年来,尽管在肺癌的治疗方面有了相当大的进展,但是病人治愈的唯一希望仍在于很早期地发现病变。然而,当肺野内的癌性肿块直径小于2.0cm时,X线诊断率一直很低,介于8%～3.5%之间。此
In the past two decades, although considerable progress has been made in the treatment of lung cancer, the only hope for the patient’s cure lies in the early detection of the disease. However, when the tumor diameter in the lung field is less than 2.0 cm, the X-ray diagnosis rate is always low, ranging from 8% to 3.5%. this