14 results
COVID-19 Patterns of Lung Findings on Chest CT
1. Reverse Halo Sign
2. ARDS
3. Crazy-Paving Pattern
4. Bilateral Peripheral
CT 1. ... Reverse Halo Sign ... Organizing Pneumonia ... Patterns #Lung #Pulmonary ... ChestCT #radiology #CTChest
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
High-Res Chest CT ... Edema, Hemorrhage, Pneumonia ... Hypersensitivity Pneumonia ... Honeycombing: Idiopathic Pulmonary ... #CT #Patterns #
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
• Pleuritic chest ... • CT: Halo sign ... Lymphadenopathy, Chest ... : • Chest pain ... Infections #HIV #AIDS #pulmonary
Venn Diagram - Does this patient have pneumonia?
Diagnosis is generally based on three lines of evidence:
this patient have pneumonia ... infiltrate (e.g., CXR, CT ... procalcitonin) - Pulmonary ... pain) and signs ... #Pneumonia #Venn
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
idiopathic interstitial pneumonias ... combinations of fibrosis ... Diagnosis #Radiology #Pulmonary ... #CTChest #Idiopathic ... IdiopathicInterstitialPneumonia #ILD
Air Bronchogram Sign on Chest CT
 • Patent airways surrounded by opacified lung
 • DDx: pna,
Air Bronchogram Sign ... on Chest CT • ... edema, severe ILD ... #Bronchogram #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 ... bronchiectasis, CF, ILD ... #Tram #Track #Sign ... #CT #Lung #Pulmonary
Galaxy Sign on Chest CT
 • Coalescent granuloma with a central dense mass and tiny peripheral
Galaxy Sign on Chest ... CT • Coalescent ... progressive massive fibrosis ... .2016.12.033 #Galaxy #Sign ... #CT #Lung #Pulmonary
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
Causes: • Cystic fibrosis ... evidence of cystic fibrosis ... Nasal polyps and signs ... CT) • Broncho-arterial ... function tests:
Usual Interstitial Pneumonia (UIP) pattern on Chest CT
75 M with progressive dyspnea. Typical usual interstitial pneumonia
UIP) pattern on Chest ... CT 75 M with progressive ... UIP Idiopathic pulmonary ... fibrosis = idiopathic ... ChestCT #radiology #pulmonary