Acute inflammation with exudative reaction and solidification of lung parenchyma. It results with impaired defence mechanisms or lowering of systemic resistance.
Depending on the anatomic distribution of involvement of pneumonia, it could be termed bronchopneumonia with patchy consolidation or lobar pneumonia with fibrinosuppurative consolidation of a large portion/ entire lobe.
1. Specimen of lobe of lung
2. Cut surface shows loss of normal spongy appearance and consolidation of entire lobe
Lung tissue is seen with interstitial anthracotic pigment
Alveoli are filled with neutrophils and macrophages
Interstitial capillaries are congested
Lobar pneumonia
1. What are the four stages of inflammatory response in this condition?
Ans: i. Stage of congestion
ii.Stage of red hepatisation
iii. Stage of gray hepatisation
iv. Stage of resolution
2.Name the two gross patterns depending on the extent of involvement.
Ans:i. Lobarpneumonia
ii. Bronchopneumonia
3. Write the key microscopic features of the condition.
Ans: Congested blood vessels. Acute inflammatory cell infiltrate.
4.What is the Final diagnosis of the case?
Ans: Lobar pneumonia
5.What are the complications of this condition?
Ans: i.Abscess formation
ii. Empyema
iii. Endocarditis
iv. Meningitis
v. Suppurative arthritis.