图示过敏性肺炎，当吸入有机粉尘后通过抗原-抗体复合物引起Ⅲ型超敏反应。病人脱离变应原所在环境时，呼吸困难、咳嗽、发热会减轻。没有明显的长期并发症。
This is an example of hypersensitivity pneumonitis that can occur when there is an inhaled organic dust that produces a localized for of type III hypersensitivity (Arthus) reaction from antigen-antibody complexes. The symptoms of dyspnea, coughing, and fever abate when the affected person leaves the environment where the offending antigen is located. There are no major long-term complications.
