Basic chest DDx
Terms
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- Acute alveolar infiltrate
-
1) Pneumonia
2) Pulmonary edema
3) Aspiration
4) Hemorrhage - Opacified hemithorax
-
1) Atelectasis
2) Pleural effusion
3) Pneumonia
4) Post pneumonectomy - Pneumomediastinum
-
1) Iatrogenic
2) Boorhaves (or other cause of ruptured esophagus)
3) Ruptured trachea or central bronchus
4) Asthma
5) Pneumothorax
6) Pneumoperitoneum
(might have to refine this one) - Chronic alveolar infiltrate
-
1) Bronchioloalveolar cell CA
2) Lymphoma
3) Alveolar proteinosis
4) Alveolar sarcoid - Large cavitary lesions
-
1) TB
2) Cancer (primary or metastatic -- mets more likely lung bases and multiple)
3) Pneumonic abscess
4) Septic emboli - Bibasilar interstitial disease
- BADASS
- Bilateral interstitial disease
-
1) Bronchiectasis
2) Aspiration
3) DIP/UIP
4) Asbestosis
5) Scleroderma
6) Sickle cell dz - Upper lobe disease
-
1) Secondary TB
2) Sarcoidosis
3) Silicosis
4) Langerhans cell histiocytosis
5) Ankylosing spondylitis
6) PCP treated with pentamidine - Micronodular lung disease
-
1) Miliary TB
2) Mets (thyroid)
3) Sarcoid
4) Silicosis or other pneumoconiosis
5) Alveolar microlithiasis
6) Viral pneumonia (varicella)
7) LCH - Small cystic lung lesions
-
1) LAM
2) LCH - How do you differentiate the two?
- LCH also has nodules
- Small cavitary lung lesions
-
1) Septic emboli
2) squamous cell or transitional cell mets
3) Wegeners
4) Rheumatoid necrobiotic nodules