10 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. ... Organizing Pneumonia ... Patterns #Lung #Pulmonary ... #ChestCT #radiology ... #CTChest #diagnosis
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
CT: Halo sign ... Legionella: • Nausea ... factor • May cause ... fever, rales, interstitial ... Infections #HIV #AIDS #pulmonary
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
The idiopathic interstitial ... pneumonias (IIPs ... indicates unknown cause ... #Diagnosis #Radiology ... #Pulmonary #CTChest
Usual Interstitial Pneumonia (UIP) pattern on Chest CT
75 M with progressive dyspnea. Typical usual interstitial pneumonia
pattern on Chest ... CT 75 M with progressive ... UIP Idiopathic pulmonary ... #IPF #ChestCT #radiology ... #pulmonary #clinical
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
High-Res Chest CT ... Lymphangitic Carcinoma, Interstitial ... Hypersensitivity Pneumonia ... #CT #Patterns # ... #radiology
Based on the images alone, it is usually not possible to determine the cause of the
determine the cause ... between these chest ... Lobar pneumonia ... Pulmonary hemorrhage ... this is nodular interstitial
Amiodarone Induced Lung Toxicity Summary

Who?
• 5% of patients
• Dose ≥ 400 mg per day

How?  Possible
(e.g., chronic interstitial ... Pleuritic chest ... Most commonly: Interstitial ... Exclude other causes ... #diagnosis #management
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Diagnosis and Management ... • Most common cause ... : Aspiration pneumonia ... CT Lung Abscess ... Lung #Abscess #pulmonary
CT and ultrasonographic features of COVID-19 pneumonia
Lung CT:
 - Thickened pleura
 - Ground glass shadow and
features of COVID ... -19 pneumonia Lung ... and effusion - Pulmonary ... infection; alveolar interstitial ... #pneumonia #ChestCT
Common Variable Immunodeficiency (CVID)

What?
CVID: Immunodeficiency disorder with hypogammaglobulinemia -> increased infection risk secondary to impaired B-cell
Granulomatous lymphocytic interstitial ... Chest CT: • Ground-glass ... community-acquired infections: Pneumonia ... and M panel Management ... DDX - Other causes