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Here are the most common examples of these four patterns on a chest x-ray (click image
patterns on a chest ... Consolidation - ... opacities - Fine Nodular ... Masses Atelectasis #Diagnosis ... #Clinical #Radiology
COVID-19 Patterns of Lung Findings on Chest CT
1. Reverse Halo Sign
2. ARDS
3. Crazy-Paving Pattern
4. Bilateral Peripheral
Reverse Halo Sign ... Halo Sign 6. ... Consolidation 7. ... Pulmonary #ChestCT #radiology ... #CTChest #diagnosis
Consolidation is synonymous with airspace disease.
When you think of the causes of consolidation, think of 'what
Consolidation is ... or tumor cells (Table ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... #Consolidation
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Differential diagnosis ... Nodular LCH: - Sarcoidosis ... : 'signet ring sign ... #Radiology #CTChest ... Differential #Comparison #Table
Based on the images alone, it is usually not possible to determine the cause of the
the cause of the consolidation ... between these chest ... in fact this is nodular ... #Clinical #Diagnosis ... #Radiology #CXR
Air Crescent Sign on Chest CT
 • Crescentic or circumferential rim of radiolucent airspace within a
Air Crescent Sign ... a parenchymal consolidation ... or nodular opacity ... Lung #Pulmonary #diagnosis ... #radiology #clinical
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
can suggest the diagnosis ... feeding vessel sign ... which are probably consolidations ... #Clinical #Radiology ... #CXR #CTChest #
Atoll Sign (Reverse-Halo Sign) on Chest CT
 • Central GGO surrounded by a crescentic or circumferential
Atoll Sign (Reverse-Halo ... Sign) on Chest ... circumferential denser consolidation ... Lung #Pulmonary #diagnosis ... #radiology #clinical
Kussmaul's sign in Constrictive Pericarditis 

A 50-year-old woman with a remote history of mediastinal lymphoma (age
blue marks on her chest ... evaluate her JVP (video ... the underlying diagnosis ... #PhysicalExam #Video ... Pericarditis #Cardiology
CT Angiogram Sign on Chest CT
 • Prominent pulm vessels traversing through an area of parenchymal
CT Angiogram Sign ... of parenchymal consolidation ... CTAngiogram #Angiogram #Sign ... Lung #Pulmonary #diagnosis ... #radiology #clinical