15 results
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
histiocytosis) - Bronchiectasis ... Diagnosis #Radiology #Pulmonary ... #CTChest #LowAttenuation ... #Differential # ... Emphysema #SignetRing #RadiologyAssistant
Signet Ring Sign on Chest CT
 • Prominently dilated airway compared to its accompanying pulm vessel.
Signet Ring Sign ... on Chest CT • ... • DDx: Bronchiectasis ... #Signet #Ring #Sign ... #CT #Lung #Pulmonary
Tram Track Sign on Chest CT
 • Parallel, non-tapering airways, extending to the lung periphery.
 •
Tram Track Sign ... on Chest CT • Parallel ... extending to the lung ... Cylindrical or traction bronchiectasis ... #CT #Lung #Pulmonary
Bronchiectasis is defined as localized bronchial dilatation.
The diagnosis of bronchiectasis is usually based on a combination
the peripheral lung ... A signet-ring sign ... Diagnosis #Radiology #Pulmonary ... #Differential # ... RadiologyAssistant
Head Cheese Sign on Chest CT
 • Juxtaposition of distinct radiographic areas of low, normal and
Head Cheese Sign ... on Chest CT • ... distinct radiographic areas ... #Head #Cheese #Sign ... #CT #Lung #Pulmonary
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
Nasal polyps and signs ... in the adjacent lung ... of the affected lung ... CT) • Broncho-arterial ... #pulmonary #differential
When a rib fracture heals, the callus formation may create a mass-like appearance (blue arrow).
Sometimes a
formation may create ... Sometimes a CT is ... necessary to differentiate ... fracture from a lung ... #Pseudotumor #RadiologyAssistant
Broncholithiasis - Differential Diagnosis Framework

 • Also known as: Lung stones, pulmoliths, pneumoliths, bronchial calculi
 •
Broncholithiasis - Differential ... Also known as: Lung ... pneumonia, • Bronchiectasis ... CT • Bronchoscopy ... Broncholithiasis #Differential
Mosaic attenuation
The term 'mosaic attenuation' is used to describe density differences between affected and non-affected lung
areas. ... Diagnosis #Radiology #Pulmonary ... #CTChest #MosaicAttenuation ... #Attenuation #Differential ... #RadiologyAssistant
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
Illnesses: • Pulmonary ... Centrilobular nodules - Bronchiectasis ... • Dyspnea, • Chest ... Imaging, high res CT ... NTM #Infections #differential