[Community-acquired pneumonia]

Area of Science:

• Radiology
• Pulmonology
• Infectious Diseases

Background:

• Clinical diagnosis of community-acquired pneumonia (CAP) is often insufficient based solely on symptoms and biochemical markers.
• Accurate CAP diagnosis necessitates advanced imaging techniques beyond initial clinical assessment.

Purpose of the Study:

• To outline the role of radiological imaging in diagnosing and managing community-acquired pneumonia.
• To emphasize the importance of chest radiography, CT, and ultrasound in specific CAP scenarios.

Main Methods:

• Standard radiological methods include chest radiography in two planes for suspected CAP.
• Risk stratification is recommended for treatment decisions (outpatient vs. hospitalization).
• Advanced imaging like computed tomography (CT) and ultrasound are utilized for complex cases and complications.

Main Results:

• Radiological findings confirm or exclude pneumonia and assess disease extent (monolobular, multilobular, unilateral, bilateral).
• Imaging can suggest pathogen groups and differentiate viral from bacterial infections, though precise correlation is limited.
• CT is vital for prolonged disease, suspected complications (effusion, empyema, abscess), and comorbidities.
• Ultrasound effectively diagnoses pleural processes like parapneumonic effusion and empyema.

Conclusions:

• Radiography is fundamental for CAP diagnosis and staging.
• CT and ultrasound are indispensable for evaluating complications and comorbidities in CAP.
• Integrated radiological assessment is key to comprehensive CAP management.