肺泡微结石症比较少见.1987年10月我们用纤维支气管镜作肺活检确诊2例,现报道如下: 例1,男,20岁.高考体检发现肺部阴影一年余入院.无咳嗽、咳痰、咯血、咯石史,偶有胸闷不适.无肺结核病史及粉尘接触史.家中未发现同病者.体检未发现异常.X线胸片:两肺布满砂粒样改变,以中下肺为甚.经肺活检病理证实为:肺泡微结 Alveolar microlithiasis is relatively rare .1987 in October we used fiberoptic bronchoscopy for lung biopsy in 2 cases, are reported as follows: Example 1, male, 20 years old. Examination of the lungs found more than a year admission hospital. No cough, cough Sputum, hemoptysis, a stone history, occasional chest tightness and discomfort.No history of pulmonary tuberculosis and dust exposure history.No patients with the same disease were found in the body.No abnormalities were found in the physical examination.X-ray: Both lungs covered with grit-like changes in the lower lung For the lung biopsy pathology confirmed as: alveolar micro-node