Community-acquired pneumonia differential diagnosis
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Community-Acquired Pneumonia Microchapters |
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Differentiating Community-acquired pneumonia from other Diseases |
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Differentiating Pneumonia from other Diseases
- Acute bronchitis - No infiltrates on the CXR.
- Asthma- No infiltrates on chest X Ray.
- Bronchiolitis obliterans with organizing pneumonia should be suspected in patients who don't respond to antibiotics treatment.
- Congestive heart failure - Bilateral pulmonary edema, involving more than the lower lung fields.
- COPD - No infiltrates on chest X Ray.
- Empyema - CXR showing features of pleural effusion, inflammatory markers on thoracocentesis.
- Endocarditis with septic pulmonary emboli
- Gastroesophageal reflux disease - Normal chest X Ray, symptoms worsening during night.
- Influenza
- Lung abscess - CXR showing signs of lung abscess.
- Malignancy - CT scan and biopsy are helpful in ruling out malignancy.
- Pertussis - Productive cough for weeks, nasopharyngeal aspirate aids in diagnosis.
- Pulmonary embolus - A high degree of suspicion should be kept for pulmonary embolus. Chest X Ray may be normal.
- Sinusitis - Sinus tenderness, post nasal drip.
- Upper respiratory tract infection
- Vasculitis - Systemic manifestations of collagen vascular disease may be seen.
Differential Diagnosis of Community acquired pneumonia depending on Chest radiograph
Abnormal chest radiograph
- Congestive heart failure accompanied by viral infection