13 results
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
Unknown • 6-7 cases ... Pneumonia - Clinical ... - Imaging: • CXR ... irregular lines, nodular ... zone, GGO, small modular
Here are the most common examples of these four patterns on a chest x-ray (click image
opacities - Fine Nodular ... - Multiple Masses ... Atelectasis #Diagnosis ... #Clinical #Radiology ... #CXR #Consolidation
Notice that there are multiple densities in both lungs.
The larger ones are ill-defined and maybe there
densities in both lungs ... maybe there is an air-bronchogram ... multiple ill-defined masses ... #Clinical #Radiology ... #CXR #Peripheral
Based on the images alone, it is usually not possible to determine the cause of the
Organizing pneumonia ... in fact this is nodular ... interstitial lung ... #Clinical #Diagnosis ... #Radiology #CXR
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... in interstitial lung ... patterns: reticular, nodular ... seen and in many cases ... #Diagnosis #Radiology
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
multiple ill-defined nodules ... can suggest the diagnosis ... abutting the pleura, air-bronchograms ... #Clinical #Radiology ... #CXR #CTChest #
Radiographic appearances of pulmonary diseases in HIV/AIDS Patients
 • Diffuse Interstitial Infiltrates: Pneumocystis jirovecii, M.tuberculosis, Histoplasma
avium complex • Nodular ... Actinomyces spp., NHL; Lung ... Bronchoalveolar cancer, Organizing ... #differential #diagnosis ... #chestCT #radiology
Air Crescent Sign on Chest CT
 • Crescentic or circumferential rim of radiolucent airspace within a
Air Crescent Sign ... consolidation or nodular ... Crescent #Sign #CT #Lung ... #Pulmonary #diagnosis ... #radiology #clinical
Subacute hypersensitivity pneumonitis
The key findings in the subacute hypersensitivity pneumonitis are:
ill-defined centrilobular nodules of ground-glass opacity
opacity (80% of cases ... opacity due to lung ... bronchiolitis with air ... #Clinical #Radiology ... HypersensitivityPneumonitis #Nodular
Katayama Fever - Physical examination and diagnostic testing revealed multiple small papules on the trunk (Panel
examination and diagnostic ... several ill-defined nodular ... #Clinical #Radiology ... InfectiousDisease #CXR ... KatayamaFever #Rash #NEJM