Legionellosis differential diagnosis

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Legionellosis must be differentiated from other causes of fever, dyspnea, cough, and sputum production, such as bacterial pneumonia, viral pneumonia, and other causes of atypical pneumonia.

Differential Diagnosis

Legionellosis must be differentiated from other causes of fever, dyspnea, cough, and sputum production, such as bacterial pneumonia, viral pneumonia, and other causes of atypical pneumonia.[1]

Disease Clinical manifestation Lab findings Imaging findings Chest X-ray
Legionellosis
Q fever
Q fever pneumonia - Case courtesy of Royal Melbourne Hospital Respiratory, Radiopaedia.org, rID 21993
Mycoplasma pneumonia
Mycoplasma pneumonia - Case courtesy of Dr Alborz Jahangiri, Radiopaedia.org, rID 45781
Chlamydia pneumonia
Chlamydia-pneumonia - Case courtesy of Dr Andrew Dixon, Radiopaedia.org, rID 14567
Acute interstitial pneumonia
  • Nonspecific
Pneumococcal pneumonia
Pneumocystis carinii pneumonia
Pulmonary embolism
Streptococcal pneumonia
  • Alveolar consolidation on chest radiograph
  • Lobar consolidation on chest radiograph
  • Empyema on chest radiograph
  • Increased uptake on gallium scan
Viral pneumonia

References

  1. 1.0 1.1 Irfan M, Farooqi J, Hasan R (2013). "Community-acquired pneumonia". Curr Opin Pulm Med. 19 (3): 198–208. doi:10.1097/MCP.0b013e32835f1d12. PMID 23422417.