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The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
histiocytosis) - Bronchiectasis ... Honeycombing Most diseases ... Diagnosis #Radiology #Pulmonary ... #CTChest #LowAttenuation ... #Differential #
Causes of Nail Clubbing - Mnemonic 
Cyanotic Heart Disease, Cystic Fibrosis
Lung Cancer, Lung abscess 
Ulcerative Colitis
, Cystic Fibrosis ... Lung Cancer, Lung ... Ulcerative Colitis Bronchiectasis ... Endocarditis, Idiopathic Pulmonary ... Nails #Mnemonic #Differential
Figure 3 HRCT-LUS correlation in normal lung, pulmonary congestion, rheumatoid lung disease, idiopathic pulmonary fibrosis.
Notes: (A)
disease, idiopathic ... pulmonary fibrosis ... opacities and traction bronchiectasis ... artifact); (G) UIP pattern ... abnormalities, traction bronchiectasis
Nail Clubbing - Differential Diagnosis Algorithm
Bronchopulmonary Disease
 • Bronchiectasis
 • Chronic Lung Infection
 • Lung Cancer
Diagnosis Algorithm ... • Bronchiectasis ... • Chronic Lung ... Infection • Lung ... Asbestosis • Cystic Fibrosis
Hemoptysis Differential Diagnosis Framework
Cardiovascular: Pulmonary embolism, Heart failure, Vasculitis, Valvular disease, Arteriovenous malformation
Pulmonary - Airway: Bronchitis,
Hemoptysis Differential ... Vasculitis, Valvular disease ... Airway: Bronchitis, Bronchiectasis ... Parenchyma: Pneumonia, Lung ... #Diagnosis #algorithm
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
Patterns - Differential ... Sarcoidosis • Bronchiectasis ... #CT #Patterns # ... Differential #Diagnosis ... #pulmonary #radiology
Causes of Dyspnea - Differential Diagnosis Algorithm
Cardiac:
 • Dysrhythmia
 • Ischemia
 • Cardiomyopathy
 • Valvular disease
Causes of Dyspnea - Differential ... Diagnosis Algorithm ... • Bronchiectasis ... • Interstitial lung ... #Diagnosis #Algorithm
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... in interstitial lung ... disease comes from ... disease and what ... Diagnosis #Radiology #Pulmonary
Bronchiectasis - Permanent dilation of an airway
WHAT CAN YOU SEE ON CT?
1) Lack of tapering of
Bronchiectasis - ... involving both lungs ... Rheumatologic/Autoimmune diseae ... #pulmonary #diagnosis ... #differential #
Causes of Pediatric Wheezing - Differential Diagnosis Algorithm
CXR Abnormal:
 • Pulmonary Sequestration
 • Congenital Adenoid Cystic
Diagnosis Algorithm ... Abnormal: • Pulmonary ... Chloride: • Cystic Fibrosis ... Endobronchial Disease ... #Causes #Peds #