[Noninfectious differential diagnoses of pneumonia]

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A Wielandner1, P Agarwal2, A Toelly3

  • 1Universitätsklinik für Radiologie und Nuklearmedizin, Medizinische Universität Wien, Währingergürtel 18-20, 1090, Wien, Österreich. alice.wielandner@meduniwien.ac.at.

Der Radiologe
|December 21, 2016
PubMed
Abstract

Insights

Pneumonia mimics can be challenging, with up to 5% of suspected cases being noninfectious pulmonary diseases. A systematic diagnostic approach is crucial for accurate pneumonia diagnosis and appropriate patient therapy.

Area of Science:

  • Pulmonology
  • Radiology
  • Internal Medicine

Background:

  • Clinical suspicion of pneumonia often leads to immediate treatment based on typical symptoms and chest X-ray findings.
  • However, up to 5% of patients initially suspected of pneumonia may have an underlying noninfectious pulmonary disease.
  • Early identification of these pneumonia mimics is essential for effective treatment.

Purpose of the Study:

  • To review key noninfectious differential diagnoses of pneumonia.
  • To offer a systematic diagnostic strategy for clinicians.

Main Methods:

  • A comprehensive literature search was conducted.

Main Results:

  • Chest X-ray and CT scans can show similar patterns for various lung conditions, making differentiation difficult.
  • Distinguishing between transudates, exudates, blood, and cells is not possible with imaging alone.
  • A systematic diagnostic approach is vital for accurate diagnosis.

Conclusions:

  • Key elements for diagnosis include temporal course, predominant imaging patterns, distribution of findings, associated signs, and clinical presentation.
  • These factors are indispensable for differentiating pneumonia from other pulmonary diseases.
  • Implementing a structured diagnostic process improves the accuracy of identifying noninfectious mimics of pneumonia.
Keywords:
Chest X rayComputed tomographyPredominant patternTemporal courseTreatment resistant

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