Click on photo to see a larger image NGIP/Alveolitis. Small collections of macrophages at arrows. Very early granuloma formation. NGIP/Alveolitis.
Hemorrhagic, necrotizing, and abscessing Staphylococcus aureus pneumonia Hemorrhagic, necrotizing, and infarcting Pseudomonas aeruginosa pneumonia Acute non-necrotizing alveolitis
Types of Alveolitis Macrophage-lymphocyte: T-lymphocytes and macrophages predominate with a few neutrophils and eosinophils.