Table 2.

Lesion scoring systems used for each target organ. Lesions were scored according to Antao et al. [22], except for peritonitis, the scoring of which was based on the authors’ observations.

Target Organ	Score	Description
Air sacs	(0–3)	0: absence of lesions 1: presence of a small amount of fibrin in the pericardium and/or a minor change in the transparency and thickness of pericardium 2: presence of a medium amount of fibrin in the pericardium and/or an intermediate change in the transparency and thickness of pericardium 3: presence of a massive amount of fibrin in the pericardium and/or an important change in the transparency and thickness of pericardium
Liver	(0–2)	0: normal liver appearance 1: small presence of fibrine material on the liver surface, the changing of natural liver color and texture 2: increased amount of fibrin covering the liver surface
Spleen	(0–1)	0: normal size and appearance of spleen 1: enlarged and congested spleen
Heart	(0–3)	0: normal transparent pericardium 1: pericardium is vascular, lack of transparency 2: increased pericardiac fluid that is (or is not) transparent 3: severe fibrinous pericarditis
Lungs	(0–5)	0: absence of lesions 1: presence of a limited affected area with necrosis/fibrin covering 1/5 of lungs 2: One or more lesions covering 2/5 of lungs 3: lesions covering 1/2 of lungs 4: lesions covering 4/5 of lungs 5: lesions covering 5/5 of lungs
Peritonitis	(0–2)	0: absence of lesions 1: presence of spots of fibrin inside the peritoneum 2: presence of mass fibrinous material inside the peritoneum