89 results
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
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These include: - Emphysema ... Honeycombing Most diseases ... on the basis of HRCT ... #Diagnosis #Radiology ... #SignetRing #RadiologyAssistant
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
adenopathy and pleural effusion ... Centrilobular emphysema ... #Clinical #Radiology ... #HRCT #CTChest ... Comparison #Table #RadiologyAssistant
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
Smoking related diseases ... (centrilobular emphysema ... Pulmonary edema #Diagnosis ... Radiology #Pulmonary #HRCT ... #Upper #Lower #RadiologyAssistant
Light's Criteria

Medical Nugget on Light's Criteria for diagnosis of Exudative Pleural Effusion in adults and children.
Light's Criteria for diagnosis ... Exudative Pleural Effusion ... #Respiratory #PleuralEffusion ... #Effusion #LightsCriteria ... im #radiology #clinical
Posterior L chest scan…same patient. Explains all! Massive L effusion, empyema. Drained and later discharged from
Massive L effusion ... , empyema. ... Wilkinsonjonny #Clinical ... Lung #Massive #Empyema ... #PleuralEffusion
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Radiographic Features of Pulmonary Diseases
 - Pneumonia
 - Atelectasis
 - Emphysema
 - Pneumothorax
 - Effusion
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Features of Pulmonary Diseases ... Atelectasis - Emphysema ... Pneumothorax - Effusion ... Reticular - Emphysema ... #Differential #Diagnosis
Radiographic appearances of pulmonary diseases in HIV/AIDS Patients
 • Diffuse Interstitial Infiltrates: Pneumocystis jirovecii, M.tuberculosis, Histoplasma
• Pleural effusion ... Parapneumonic effusion ... ; empyema, M.tuberculosis ... (NHL, primary effusion ... #differential #diagnosis
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Centrilobular emphysema ... #Clinical #Radiology ... #HRCT #CTChest ... Comparison #Table #RadiologyAssistant
More than 100 entities manifest as diffuse lung disease.
Fortunately only about 10 of these account for
as diffuse lung disease ... all diffuse lung diseases ... also uncommon HRCT-presentations ... SHITFACED #Mnemonic #HRCT ... #RadiologyAssistant
Pleural effusion is seen in:
1. Pulmonary edema
2. Lymphangitic spread of carcinoma - often unilateral
3. Tuberculosis
4. Lymphangiomyomatosis
Pleural effusion ... Asbestosis #Diagnosis ... Pulmonary #Pleural #Effusion ... #PleuralEffusion ... #Differential #RadiologyAssistant