15 results
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
The fourth pattern ... low attenuation pattern ... #LowAttenuation ... #Differential # ... Diagram #Comparison
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Low Attenuation pattern ... Radiology #HRCT #CTChest ... #LowAttenuation ... #Cystic #Pattern ... #Comparison #Table
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Low Attenuation pattern ... Radiology #HRCT #CTChest ... #LowAttenuation ... #Cystic #Pattern ... #Comparison #Table
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... there are four patterns ... a CXR the most common ... The cystic pattern ... When the cysts have
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
with a nodular pattern ... before the typical cysts ... #Clinical #Diagnosis ... #Nodular #Pattern ... #Comparison #Table
Perilymphatic distribution
Perilymphatic nodules are most commonly seen in sarcoidosis.
They also occur in silicosis, coal-worker's pneumoconiosis and
nodules are most commonly ... the overlap in differential ... the reticular pattern ... #Diagnosis #Radiology ... Pulmonary #HRCT #CTChest
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
Patterns - Differential ... Diagnosis Framework ... Antitripsyn Def • Cysts ... #CT #Patterns # ... Differential #Diagnosis
Low Back Pain (Lumbago) - Common Differential Diagnosis and Patterns

Mechanical Low Back Pain:
Aching pain in the
Differential Diagnosis ... and Patterns ... BackPain #Lumbago #Differential ... #Diagnosis #Patterns ... #Features #Comparison
On the left a chest film of a 19 year old patient with Langerhans cell histiocytosis.
The
is a reticular patern ... recognized that this pattern ... caused by multiple cysts ... diagnosis in this ... Radiology #CXR #CTChest
Septal thickening
Thickening of the lung interstitium by fluid, fibrous tissue, or infiltration by cells results in
cells results in a pattern ... is relatively common ... diagnosis (Table ... #Diagnosis #Radiology ... Pulmonary #HRCT #CTChest