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Case 64. Pneumococcal pneumonia (77 y-o M)
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Autopsied lung with lobar pneumonia (three-day clinical course)
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Key words : Streptococcus pneumoniae, lobar pneumonia
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| The middle lobe of the right lung is diffusely solidified and gray-colored (gross findings). | Diffuse intraalveolar exudation of fibrins and neutrophils is observed (HE). | |
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| Gram stain identifies a small number of Gram-positive cocci dispersed in the exudates. Cocci are often paired and located outside the neutrophils, indicating the formation of capsule by the bacteria (Gram). | ||
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