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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 ... - Multifocal ill-defined ... mass - Solitary Pulmonary ... Masses Atelectasis #Diagnosis ... #Clinical #Radiology
Based on the images alone, it is usually not possible to determine the cause of the
chronic illness, clinical ... between these chest ... Pulmonary hemorrhage ... #Clinical #Diagnosis ... #Radiology #CXR
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 #
Air Crescent Sign on Chest CT
 • Crescentic or circumferential rim of radiolucent airspace within a
a parenchymal consolidation ... or nodular opacity ... #CT #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
bronchiolitis: ill ... #Clinical #Diagnosis ... #Radiology #Pulmonary ... #CTChest #Nodular ... #Differential #Comparison
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
: 'signet ring sign ... central dot. - LIP #Clinical ... #Diagnosis #Radiology ... #CTChest #Cystic ... #Differential #Comparison
Tram Track Sign on Chest CT
 • Parallel, non-tapering airways, extending to the lung periphery.
 •
bronchiectasis, CF ... , ILD, necrotizing ... #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 ... circumferential denser consolidation ... #CT #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
CT Angiogram Sign on Chest CT
 • Prominent pulm vessels traversing through an area of parenchymal
CT Angiogram Sign ... of parenchymal consolidation ... #CT #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
Stage I - Redistribution
In a normal chest film with the patient standing erect, the pulmonary vessels
In daily clinical ... In these cases comparison ... with old fims can ... during a period of CHF ... #Clinical #Radiology