8 results
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
Cryptogenic Organizing ... Pneumonia (COP) ... CXR: Peripheral distribution ... - Diagnosis: ... #ILD #diagnosis
Central distribution is seen in sarcoidosis and cardiogenic pulmonary edema.
Peripheral distribution is mainly seen in cryptogenic
Central distribution ... mainly seen in cryptogenic ... organizing pneumonia ... (COP), chronic ... #Diagnosis #Radiology
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
Differential diagnosis ... the pattern of distribution ... OP is organizing ... idiopathic it is called cryptogenic ... (COP).
Interstitial Lung Diseases (ILD)
Exposure-Related ILD (a.k.a. extrinsic allergic alveolitis): 
 • Hypersensitivity pneumonitis, Farmer's lung, Bird
Lung Diseases (ILD ... pneumonia (NSIP), Cryptogenic ... organizing pneumonia ... (COP), Respiratory ... #diagnosis #differential
HRCT findings in OP
- Bilateral peripheral consolidations, sharply demarcated.
- Consolidations may be migratory.
- Lesions may show
carcinoma, the diagnosis ... of cryptogenic ... organizing pneumonia ... #Cryptogenic #Organizing ... #Pneumonia #ILD
On the left two cases with chronic consolidation. 
There are patchy non-segmental consolidations in a subpleural
and peripheral distribution ... The final diagnosis ... was cryptogenic ... organizing pneumonia ... (COP).
Differential diagnosis of the reversed halo sign (RHS). AIA, angioinvasive aspergillosis; AIS, adenocarcinoma in situ; COP,
Differential diagnosis ... adenocarcinoma in situ; COP ... , cryptogenic organising ... perilymphatic distribution ... #Differential #Algorithm
Notice that there are multiple densities in both lungs.
The larger ones are ill-defined and maybe there
is a peripheral distribution ... the differential diagnosis ... of organizing pneumonia ... (OP) also known ... #Organizing #Pneumonia