Lung abscess

Keywords: Paragonimus infection


Appropriate Tests


Blood cultures; Full blood count, C-Reactive protein, Fine needle aspiration biopsy or bronchial brush, wash; bronchoalveolar lavage for MCS pus, MCS fungal, Mycobacteria testing.

See also Pneumonia with abscess.



  • Streptococcus “milleri”


  • Anaerobes


  • Staphylococcus aureus


  • Legionella spp

See Legionella infection.

  • Nocardia spp

If Nocardia spp infection is suspected, the laboratory should be informed (prolonged incubation is required).



  • Mycobacterium tuberculosis

See Tuberculosis.



  • Aspergillus spp

See Aspergillosis.

  • Mucor sp

See Mucormycosis.

  • Cryptococcus neoformans

Usually solid, rather than cystic, lesions; see Cryptococcal infection.



  • Entamoeba histolytica

See Amoebiasis.

  • Paragonimus westermani

Sputum microscopy for characteristic ova. Removal of affected lung with lung biopsy may be required for diagnosis and treatment.