Figure 4
Histopathology of the right upper and middle lobes (right arrow in Figure 3a). (a) Emphysema and thrombosis were observed in the upper lobe, while severe hemorrhage in the middle lobe. (b)High power view of thrombosis (red arrow in a). Organized thrombus is pointed with the red arrow. (c) Hight power view of the middle lobe (blue arrow in a). DAD with fibrin exudation was focally observed. (a): Masson trichrome (MT) staining. (b)(c): Hematoxylin-eosin (HE) staining.