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Central distribution is seen in sarcoidosis and cardiogenic pulmonary edema.
Peripheral distribution is mainly seen in cryptogenic
and cardiogenic pulmonary ... edema. ... Diagnosis #Radiology #Pulmonary ... #HRCT #ChestCT ... #Differential #Table
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
- Aspiration - Pulmonary ... edema #Diagnosis ... #Radiology #Pulmonary ... #HRCT #ChestCT ... #Differential #Table
Figure 3 HRCT-LUS correlation in normal lung, pulmonary congestion, rheumatoid lung disease, idiopathic pulmonary fibrosis.
Notes: (A)
Figure 3 HRCT-LUS ... due to alveolar syndrome ... multiple long, vertical ... fibrotic alveolar syndrome ... #Correlation #Table
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
disease comes from HRCT ... On HRCT there are ... low attenuation (table ... On a Chest X-Ray ... Diagnosis #Radiology #Pulmonary
Dyspnea - Differential Diagnosis Framework

Cardiovascular Causes of Dyspnea:
 • Myocardium:
	- Heart failure
	- CAD/ACS
	- Valvulopathy
 • Electrical:
	-
- Tamponade Pulmonary ... Hepatopulmonary syndrome ... of Dyspnea: • Chest ... Obesity - Flail chest ... Transverse myelitis • Hematology
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
Pulmonary Renal ... Syndrome Definition ... Hemoptysis, Peripheral edema ... Renal Syndromes ... high resolution chest
Connective tissue disease-associated interstitial lung diseases

LIP: lymphoid interstitial pneumonia. NSIP: nonspecific interstitial pneumonia. OP: organizing pneumonia.
PSS: Sjogren syndrome ... Differential #Comparison #Table ... #Pulmonary #Rheumatology
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
spaces with pus, edema ... resolution of the HRCT ... Diagnosis #Radiology #Pulmonary ... #CTChest #GGO #
Consolidation is synonymous with airspace disease.
When you think of the causes of consolidation, think of 'what
Is it pus, edema ... or tumor cells (Table ... Diagnosis #Radiology #Pulmonary ... #CTChest #Consolidation
Reticular pattern 
1. Lymphangitic carcinomatosis: irregular septal thickening, usually focal or unilateral 50% adenopathy', known carcinoma.
2.
Cardiogenic pulmonary ... finding in HRCT ... Cardiogenic pulmonary ... #CTChest #Reticular ... Pattern #Comparison #Table