40.An abscess may have elements of chronic inflammation if it persists for some time. Thus, it is possible to have a "chronic abscess" with elements of both acute and chronic inflammation. Seen here in the   right middle lung lobe is jus such a chronic abscess.

40.如脓肿持续较长时间会成为慢性炎症的发病因素，因此“慢性脓肿”会成为急性和慢性炎症的发病因素。如图所示，右肺中叶的慢性脓肿。