Table 1

Differential diagnosis of a pulmonary mass

  • Bacterial infection

  • Fungal infection

  • Tuberculosis

  • Infection from nontuberculous mycobacteria

  • Lung abscess

  • Primary lung tumour

  • Secondary lung tumour

  • Inflammatory pseudo-tumour

  • Cryptogenic organising pneumonia

  • Round atelectasis

  • Hydatid cyst

  • Haematoma

  • Pulmonary arteriovenous malformation