外源性类脂性肺炎，沿气道处可见脂泡，并伴异物巨细胞炎症反应。外源性是指脂质源于体外，而后被吸入到支气管树。
This is the microscopic appearance of an exogenous lipid pneumonia in which lipid vacuoles appear, mainly along airways, accompanied by an inflammatory response that can contain foreign body giant cells. The term exogenous refers to the origin of the lipid material outside the body. This material is aspirated into the bronchial tree.
