20 results
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
attenuation or air-filled ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... LowAttenuation #Differential ... #Diagram #Comparison
Air Bronchogram Sign on Chest CT
 • Patent airways surrounded by opacified lung
 • DDx: pna,
Sign on Chest CT ... • Patent airways ... #CT #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
Monod Sign on Chest CT
 • Air surrounding a fungal ball in a preexisting pulmonary cavity
Monod Sign on Chest ... CT • Air surrounding ... #CT #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
Bronchus Sign on Chest CT
 • Airway leading directly to a peripheral lung nodule or mass
Bronchus Sign on ... Chest CT • Airway ... #CT #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
Signet Ring Sign on Chest CT
 • Prominently dilated airway compared to its accompanying pulm vessel.
Signet Ring Sign ... Prominently dilated airway ... #CT #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
Air Crescent Sign on Chest CT
 • Crescentic or circumferential rim of radiolucent airspace within a
Air Crescent Sign ... #Crescent #Sign ... #CT #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
There is a hydropneumothorax.
Notice the air-fluid level (blue arrow).
The upper lobe is still attached to the
Notice the air-fluid ... attached to the chest ... obstruction of small airways ... leading to pulmonary ... #Clinical #Radiology
Tram Track Sign on Chest CT
 • Parallel, non-tapering airways, extending to the lung periphery.
 •
Tram Track Sign ... , non-tapering airways ... #CT #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
Nasal polyps and signs ... thickening, presence of air-fluid ... in the adjacent lung ... of the affected lung ... #differential #
Bronchiectasis is defined as localized bronchial dilatation.
The diagnosis of bronchiectasis is usually based on a combination
visibility of airways ... the peripheral lung ... and sometimes air ... #Diagnosis #Radiology ... #Differential #