What is Indirect Pneumonia?

Indirect pneumonia, medically known as interstitial pneumonia, is a diffuse, solid lung disease. It mainly involves the interstitial and alveolar spaces of the lungs. Clinical manifestations include progressive dyspnea and irritating cough. Chest imaging shows diffuse lesions in both lungs. According to different pathogenic factors, it can be roughly divided into the following categories: First, interstitial pneumonia with known causes, such as allergic pneumonia caused by inhalation of organic dust. Second, idiopathic interstitial pneumonia, such as idiopathic pulmonary fibrosis. Third, granulomatous interstitial pneumonia, such as sarcoidosis. Fourth, rare interstitial pneumonia, such as pulmonary lymphangioleiomyomatosis, alveolar proteinosis, etc.