Page 485 - Textbook of Pathology, 6th Edition
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The Respiratory System
Figure 17.6 The four stages of lobar pneumonia, showing correlation of gross appearance of the lung with microscopic appearance in each CHAPTER 17
stage. For details consult the text.
i) The oedema fluid of the preceding stage is replaced iv) The alveolar septa are less prominent than in the first
by strands of fibrin. stage due to cellular exudation.
ii) There is marked cellular exudate of neutrophils and 3. GREY HEPATISATION: LATE CONSOLIDATION
extravasation of red cells. (Fig. 17.6,C). This phase lasts for 4 to 8 days.
iii) Many neutrophils show ingested bacteria.
