Fig. 2

Representative pictures of the histological findings. (a) and (b) depict findings from patient 4. Notably, this case lacked an identifiable vessel wall. The necrotic lesion extended to the serosal surface, leading to fibrotic adhesion between the layers of the pleura. Scar tissue formation resulted in tissue tearing during the surgical procedure. (c) and (d) showcase observations from patient 5. This case exhibited the highest worm count, with some worms beginning to undergo dystrophic calcification. All samples were stained with hematoxylin and eosin. Images (a) and (c) were captured at a magnification factor of 50x, while images (b) and (d) were captured at a magnification factor of 100x. Additionally, an insert photo highlights the elastic layer of the pulmonary artery, stained with orcein and magnified at 50x