Fig. 2
From: Microscopic feature of lymph node anthracosilicosis adherent with pulmonary artery: a case report
The lymph node (LN) anthracosilicosis and granulomatous inflammation of adventitia in the pulmonary artery (PA) are shown in microscopy. a. Intraoperative photograph. b, d, Hematoxylin–eosin staining. c, Elastica van Gieson staining. Black arrows: macroscopically infiltrating LN to PA. White arrowheads: normal adventitia. Black arrowheads: dense and borderless fibrous tissue. White arrows: dust-laden macrophages. The bars indicate 200 μm, respectively