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Insights into Imaging

Table 2 Radiological features of pathologies in differential diagnosis with COVID-19 pneumonia

From: Differential diagnoses of COVID-19 pneumonia: the current challenge for the radiologist—a pictorial essay

Pathologies

Ground glass

Crazy paving

Consolidations

Infective pneumonia

Bacterial

R (ATYPICAL)

OD/A

C (TYPICAL)

Viral

C

OD/A

R

Fungal: pneumocystis jiroveci pneumonia

C

R

R

Fungal: angioinvasive aspergillosis

(HALO)

OD/A

C

Cardiovascular

Acute pulmonary oedema

C (INTERSTITIAL)

C (INTERSTITIAL)

C (ALVEOLAR)

 

Acute pulmonary embolism and infarctions

C

C

C

 

Vasculitis

C (HAEMORRAGE)

C (REABSORPTION)

C (MASSIVE HAEMORRAGE)

Hypersensitivity pneumonia

 

C

OD/A

R

Eosinophilic pneumonia

Simple pulmonary eosinophilia

C

OD/A

C

 

Acute eosinophilic pneumonia

C

C

R

 

Chronic eosinophilic pneumonia

R

R

C

Aspiration pneumonia

Fluid-related ab ingestis pneumonia

C

OD/A

C

 

Chronic lipoid pneumonia

C

C

C

Alveolar proteinosis

 

OD/A

C

R

  1. Analysed pathologies usually share at least one radiological feature, among ground-glass areas, crazy paving opacities and consolidations, with COVID-19 pneumonia. These findings may be either common or rare presentation of pathologies or be occasionally described/absent. The timing of these features presentation frequently varies with respect to COVID-19 pneumonia characteristic phases
  2. C, common; R, rare; OD/A, occasionally described/absent
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