Legionella pneumonia

Case contributed by Dr Henry Knipe


Fevers, cough.

Patient Data

Age: 55
Gender: Female

Predominantly mid to lower zone airspace opacity. No large pleural effusion. 

Legionella Multiplex PCR

Specimen Type/Site:     Bronchial Washings

       Legionella species:          Positive
       Legionella pneumophila:   Negative

Species:        Legionella longbeachae

Case Discussion

Chest x-ray features of legionella pnuemonia is non-specific but includes a mid-to-lower zone predominance of patchy consolidation and is sometimes associated with pleural effusions (~ 30%). 

Radiographic deterioration does not correlate well with clinical condition. 

Legionella longbeachae is commonly found in potting mix (soil), more so in Australia than in Europe. It is an increasingly common (compared to Legionella pneumophila and other species) source of legionellosis. 

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Case information

rID: 31816
Case created: 29th Oct 2014
Last edited: 2nd Sep 2015
System: Chest
Inclusion in quiz mode: Included

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