双语教学

Explain of Pulmonary Pathology

2.Normal lung, cross section, gross

This is a cross-section of normal lung (with only minimal posterior congestion at the lower right). The hilar lymph nodes are small and have enough anthracotic pigment (from dusts in the air breathed in, scavenged by pulmonary macrophages, transferred to lymphatics, and collected in lymph nodes) to make them appear greyish-black.

（本图片资料来源自美国犹他大学）