Fig. 2. Pathological findings in case of co-infection with D. immitis and A. vasorum in a golden jackal. (A) Presence of adult D. immitis within the right cardiac chambers (bar = 1 cm). (B) Lung parenchyma show multifocal poorly defined red to yellow-brown nodular firmer areas in the ventral edges of lung lobes (white circle and inset). Multifocal dark brown-black areas representing thrombotic infarcts are also often visible (white square and inset). (bar = 2 cm). (C) Female adult of A. vasorum nematode within a small pulmonary artery (bar = 1 cm). (D) Cross section of adult A. vasorum (black stars) and a thrombus (Th) in the lumen of a small pulmonary artery. Hematoxylin and eosin. (E) Lung parenchyma show multifocal granulomatous interstitial pneumonia. The granulomatous areas contained small central necrotic tissue and occasionally small, calcified areas. Giant macrophagic cells are visible within granulomatous areas (white circle). Embryonated eggs and first-stage larvae of A. vasorum are embedded within these inflammatory foci (black arrows). Masson's trichrome.