Necrotizing pneumonia

Necrotizing pneumonia :

 - Necrotizing pneumonia, necrosis, and liquefaction of lung parenchyma, is a serious complication of community-acquired pneumonia (CAP).

• Necrotizing pneumonia usually follows pneumonia caused by particularly virulent bacteria e.g S. pneumoniae (especially serotype 3 and serogroup 19) is the most common cause of necrotizing pneumonia .

• Necrotizing pneumonia also may occur with S. aureus and group A Streptococcus and has been reported due to M. pneumoniae, Legionella, and Aspergillus.

• Clinical manifestations of necrotizing pneumonia are similar to those of uncomplicated pneumonia, but they are more severe .

• Necrotizing pneumonia should be considered in a child with prolonged fever or septic appearance .

• The diagnosis can be confirmed by chest radiograph (which demonstrates a radiolucent lesion) or contrast-enhanced computed tomography ,the findings on chest radiograph may lag behind those of computed tomography .