3.1. Pathological findings
The main gross finding was dark reddish coloration in the lungs, draining a marked amount of serosanguineous fluid. Microscopically, hemodynamic disturbances were observed in the lungs, highlighting a marked congestion of blood vessels and alveolar capillaries, and mild acute alveolar hemorrhage (Figure 1a). In liver, moderate congestion in zone I and II was detected (Figure 1b). Finally, in kidney, corticomedullar congestion was also observed. Histopathological alterations were not perceived in the remaining organs/tissues analyzed.