11 results
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
of interstitial lung ... Pneumonia - Clinical ... Pneumonia - Diagnosis ... COP DDX: • CAP ... pulmonary #ILD #diagnosis
COVID-19 Patterns of Lung Findings on Chest CT
1. Reverse Halo Sign
2. ARDS
3. Crazy-Paving Pattern
4. Bilateral Peripheral
19 Patterns of Lung ... Reverse Halo Sign ... Organizing Pneumonia ... Pulmonary #ChestCT #radiology ... #CTChest #diagnosis
Feeding Vessel Sign on Chest CT
 • Distinct pulmonary vessel leading into a lung nodule or
Feeding Vessel Sign ... , pulm AVM, GPA ... Feeding #Vessel #Sign ... #diagnosis #radiology ... #clinical
Halo Sign on Chest CT
 • SPN or mass surrounded by a circumferential GGO
 • DDx:
Halo Sign on Chest ... mueormycosis, GPA ... #CT #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
Notice that there are multiple densities in both lungs.
The larger ones are ill-defined and maybe there
densities in both lungs ... the differential diagnosis ... of organizing pneumonia ... #Clinical #Radiology ... #Distribution #Organizing
Cryptogenic Organizing Pneumonia - Illness Script

PATHOPHYSIOLOGY: Unknown trigger, reversible inflammatory/fibroproliferative process. Polypoid fibroblastic aggregates that plug
Cryptogenic Organizing ... Males=Females SIGNS ... misdiagnosed as CAP ... : Clinical diagnosis ... #Pneumonia #diagnosis
Based on the images alone, it is usually not possible to determine the cause of the
Lobar pneumonia ... Organizing pneumonia ... nodular interstitial lung ... #Clinical #Diagnosis ... #Radiology #CXR
Cheerio Sign (Open Bronchus Sign) on Chest CT
 • Pulmonary nodule with a central lucency
 •
and metastatic lung ... rheumatoid nodules, GPA ... #CT #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
Atoll Sign (Reverse-Halo Sign) on Chest CT
 • Central GGO surrounded by a crescentic or circumferential
Sign) on Chest ... IFI, PJP, LG, GPA ... #CT #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
On the left two cases with chronic consolidation. 
There are patchy non-segmental consolidations in a subpleural
The final diagnosis ... was cryptogenic organizing ... will be other signs ... look like this #Clinical ... #Radiology #CTChest