本院自1991年2月至1998年6月共收治经病理证实的肺泡蛋白沉积症患者5例，本文结合文献对该症的影像学表现分析如下。材料与方法5例患者中男3例，女2例；年龄32～46岁，平均35．2岁。临床症状；均有咳嗽，咯白色痰，其中1例痰中带血，3例有气短和呼吸困难，胸痛1例，均无发热。 The hospital from February 1991 to June 1998 were treated by pathology confirmed pulmonary alveolar proteinosis in 5 patients, this article combined with the literature on the imaging features of the disease are analyzed as follows. Materials and Methods 5 patients in 3 males and 2 females; aged 32 to 46 years, mean 35.2 years old. Clinical symptoms; both cough, slightly white sputum, of which 1 case of bloody sputum, 3 cases of shortness of breath and difficulty breathing, chest pain in 1 case, no fever.