Chest ImagingHaemophilus influenzae infection
Haemophilus influenzae is a coccobacillus which may produce homogeneous, lobar-type opacification on chest radiographs. In infants and young children (who are predisposed to infection with this organism) an epiglottitis or bronchitis as well as pneumonia may develop. In adults more frequently heterogeneous or homogeneous opacities are identified particularly in the lower lobes (Fig.1). Pleural fluid may be associated with the pneumonia which is generally responsive to appropriate antibiotics.
PGO
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A PA chest film demonstrates dense homogeneous opacification in the periphery of the left upper lobe and similar homogeneous opacity in the right mid lung. These findings are typical of bacterial pneumonia which in this case was due to Haemophilus influenzae infection.
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Haemophilus influenzae infection, Fig.1 | |