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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
Signet Ring Sign on Chest CT
 • Prominently dilated airway compared to its accompanying pulm vessel.
Signet Ring Sign ... on Chest CT • ... • DDx: Bronchiectasis ... #CT #Lung #Pulmonary ... diagnosis #radiology #clinical
Tram Track Sign on Chest CT
 • Parallel, non-tapering airways, extending to the lung periphery.
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Tram Track Sign ... on Chest CT • Parallel ... Cylindrical or traction bronchiectasis ... #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 ... in the adjacent lung ... of the affected lung ... high-resolution chest CT ... #pulmonary #differential
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
Centrilobular nodules - Bronchiectasis ... Disease: Clinical ... Disease: • Clinical ... Imaging, high res CT ... NTM #Infections #differential
Broncholithiasis - Differential Diagnosis Framework

 • Also known as: Lung stones, pulmoliths, pneumoliths, bronchial calculi
 •
Broncholithiasis - Differential ... Also known as: Lung ... Broncholithiasis - Clinical ... pneumonia, • Bronchiectasis ... bronchus • Chest CT
When a rib fracture heals, the callus formation may create a mass-like appearance (blue arrow).
Sometimes a
Sometimes a CT is ... necessary to differentiate ... fracture from a lung ... #Clinical #Radiology ... #Pseudotumor #RadiologyAssistant
CT will also demonstrate signs of congestive heart failure.
On the image on the left notice the
CT will also demonstrate ... signs of congestive ... be high in the differential ... #Clinical #Radiology ... IntersitialEdema #Septal #RadiologyAssistant
On the left a patient who is treated with cytotoxic drugs for a hematologic malignancy.
The radiographic
some traction bronchiectasis ... like idiopathic pulmonary ... consider drug-related lung ... disease in the differential ... #Clinical #Radiology
he CT shows a lesion that originates in the lung.
Many would have a lungcancer on the
he CT shows a lesion ... originates in the lung ... the top of their differential ... #Clinical #Radiology ... #RadiologyAssistant