Table 2—

Differential diagnosis of pulmonary granulomas#

Infections
 TB
 Fungal (e.g. aspergillosis, histoplasmosis, etc.)
 Bacterial (e.g. brucellosis)
 Parasitic (e.g. schistosomiasis, leshmaniasis)
Malignancies and lymphoproliferative disorders
 PPL
 MALT type NHL
 LIP
 Lymphatoid granulomatosis
Unknown aetiology
 Sarcoidosis
 Wegner's granulomatosis
 Churg-Strauss syndrome
 Bronchocentric granulomatosis
Environmental or occupational exposure
 Hypersensitivity pneumonitis
 Berylliosis
  • TB: tuberculosis

  • PPL: primary pulmonary lymphoma

  • MALT: mucosa-associated lymphoid tissue

  • NHL: non-Hodgkin's lymphoma

  • LIP: lymphocytic interstitial pneumonitis

  • #: for more details see reference 2