引流肺淋巴的淋巴结内灰尘颗粒的分布和结构变化

目的 :研究灰尘颗粒在引流肺淋巴的淋巴结内的分布和淋巴结的组织变化。方法 :取成人和儿童肺门淋巴结、气管支气管淋巴结和气管旁淋巴结 ,石蜡切片。取肺切除术患者的肺门淋巴结作超薄切片。结果 :尘细胞和灰尘颗粒分布于淋巴结被膜、淋巴窦和髓索内。肺门淋巴结和气管支气管淋巴结的光密度比气管旁淋巴结高 ,成人肺门淋巴结、气管支气管淋巴结和气管旁淋巴结的光密度高于儿童的淋巴结。成人淋巴结的血管密度与儿童淋巴结之间存在着显著性差异。间质胶原纤维增生。结论 :在引流肺淋巴的淋巴结内 ,肺门淋巴结和气管支气管淋巴结内的灰尘颗粒明显多于气管旁淋巴结 ,成人淋巴结灰尘颗粒比儿童多。在成人 ,灰尘颗粒引起淋巴结的淋巴组织减少 ,纤维组织和血管增生

Distribution of dust particles and changes of structure in lymph nodes of draining pulmonary lymph

Objective:To investigate the distribution of dust particles and the structural changes in lymph nodes of draining pulmonary lymph.Methods:HLNs,TBLNs and PTLNs were taken from corpses of adults and children.Sections were made.The lymphatic tissue of HLNs of 5 patients were removed,ultrathin sections were made.Results:There were dust cells and dust particles in capsule,sub capsular sinus and peritrabecular sinuses.Medullary cords contained more dust cells and dust particles.Afferent lymphatic vessels enlarged.Optical density of HLNs and TBLNs was higher than that of PTLNs.There was a significant difference in density of blood vessels and optical density between adults' lymph nodes and children lymph nodes.Conclusion:There are dust cells and free dust particles in lymph nodes that drain lymph from lungs.Dust particles in the HLN and TBLN are more than PTLN.In the adults'lymph nodes,dust cells and free dust particles cause reduction of lymphatic tissue and proliferation of collagen fibers and blood vessels.