Cough with fever or lower respiratory symptoms
Recommended: Chest X-ray PA + lateral is the preferred imaging study for cough with fever or lower respiratory symptoms. First-line imaging for evaluating productive cough, fever, or new dyspnea.
Recommended study
Chest X-ray PA + lateral
First-line imaging for evaluating productive cough, fever, or new dyspnea. Reserve CT for non-resolving findings, immunocompromised host, or suspected complication.
If the default doesn't apply
Immunocompromised / atypical / non-resolving findings
CT
CT Chest with IV contrast
IV contrast
Suspected parapneumonic effusion / empyema
CT
CT Chest with IV contrast + Bedside Ultrasound for drainage
IV contrast
Recurrent in the same lobe
CT
CT Chest with IV contrast (rule out post-obstructive cause)
IV contrast
Watch-outs
Severe sepsis or qSOFA positive
Don't wait for imaging — initiate antibiotics within the first hour and image while resuscitating.
Recurrent pneumonia in the same anatomic location
Investigate for post-obstructive cause (mass, foreign body) — CT chest with contrast.
Pearls
- Normal CXR doesn't fully exclude pneumonia in dehydrated / neutropenic patients — clinical features still drive treatment.
- Lobar consolidation suggests typical pathogens; reticulonodular / interstitial pattern suggests atypical / viral.
- Routine post-treatment CXR follow-up is reserved for elderly, smokers, and unresolved cases — not standard for every patient.