A mnemonic to remember differentials causing lower lobe fibrosis or predominant lower lobe fibrosis.
- SAB-IPM
- IPAS-BM
Mnemonic
SAB-IPM
- S: systemic sclerosis and other connective tissue diseases (e.g. rheumatoid arthritis)
- A: aspiration, alpha-1 antitrypsin deficiency, asbestosis
- B: bronchiectasis
- IP: infection; interstitial pneumonia including usual interstitial pneumonia (UIP), non-specific interstitial pneumonia (NSIP), desquamative interstitial pneumonia
- M: medications (e.g. busulfan, bleomycin lung toxicity, nitrofurantoin, hydralazine, methotrexate, amiodarone)
IPAS-BM
- IP: infection; interstitial pneumonia including usual interstitial pneumonia (UIP), non-specific interstitial pneumonia (NSIP), desquamative interstitial pneumonia
- A: aspiration, alpha-1 antitrypsin deficiency, asbestosis
- S: systemic sclerosis and other connective tissue diseases (e.g. rheumatoid arthritis)
- B: bronchiectasis
- M: medications (e.g. busulfan, bleomycin lung toxicity, nitrofurantoin, hydralazine, methotrexate, amiodarone)