Predominant lesions in the lungs were areas of chronic and active abscessation amid a focally extensive area of mixed infl ammation and fi brosis. There was moderate diffuse acute pulmonary edema and congestion. Gastric ulcerations were present in the fi rst gastric chamber and were chronic and active. They were characterized by central ulcerations with necrosis and a mixed infl ammatory infi ltrate surrounded by variable fi brosis and a rim of epithelial hyperplasia. Changes in spleen, lymph node, and kidney included acute edema, congestion, and vascular dilation.