高倍镜下，可见对吸入物产生的异物巨细胞反应。吸入物如同胃内容物一样由于化学刺激物的作用可引起炎症。
There is a localized foreign body giant cell response to the aspirated material seen here at high magnification. Aspirated material may also produce inflammation from chemical irritation, as with gastric contents.
