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Central distribution is seen in sarcoidosis and cardiogenic pulmonary edema.
Peripheral distribution is mainly seen in cryptogenic
and cardiogenic pulmonary ... organizing pneumonia (COP ... #Diagnosis #Radiology ... #Pulmonary #HRCT
Barrel Chest Appearance on Lateral Chest Xray
Typically seen in the setting of chronic air-trapping in COPD

-
air-trapping in COPD ... #CXR #Lateral #Radiology ... #pulmonary
When a rib fracture heals, the callus formation may create a mass-like appearance (blue arrow).
Sometimes a
and the enlarged pulmonary ... are dealing with pulmonary ... a patient with COPD ... #Clinical #Radiology
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
Hypersensitivity Pneumonia, COP ... Sarcoidosis, NSIP, COP ... Honeycombing: Idiopathic Pulmonary ... Differential #Diagnosis #pulmonary ... #radiology
Bronchiectasis is defined as localized bronchial dilatation.
The diagnosis of bronchiectasis is usually based on a combination
chronic bronchitis, COPD ... #Diagnosis #Radiology ... #Pulmonary #Bronchiectasis
Mosaic Attenuation on Chest CT
 • Variable attenuation seen on a chest CT in a lobular
PJP, CEP, HP, COP ... Attenuation #CT #Lung #Pulmonary ... #diagnosis #radiology
Atoll Sign (Reverse-Halo Sign) on Chest CT
 • Central GGO surrounded by a crescentic or circumferential
consolidation • DDx: COP ... Sign #CT #Lung #Pulmonary ... #diagnosis #radiology
Differential diagnosis of the reversed halo sign (RHS). AIA, angioinvasive aspergillosis; AIS, adenocarcinoma in situ; COP,
adenocarcinoma in situ; COP ... pneumonia; PZ, pulmonary ... #Diagnosis #Pulmonary ... #Radiology #RHS
Crazy Paving is a combination of ground glass opacity with superimposed septal thickening (5).
It was first
Organizing pneumonia (COP ... Bronchoalveolarca (BAC) - Pulmonary ... AIP) #Clinical #Radiology
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
called cryptogenic (COP ... #Diagnosis #Radiology ... #Pulmonary #CXR