13 results
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... there are four patterns ... low attenuation (table ... The cystic pattern ... When the cysts have
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Low Attenuation pattern ... (LAM): uniform cysts ... bizarre shaped cysts ... LowAttenuation #Cystic #Pattern ... #Comparison #Table
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Low Attenuation pattern ... multiple thick walled cysts ... (LAM): regular cysts ... LowAttenuation #Cystic #Pattern ... #Comparison #Table
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
The fourth pattern ... Emphysema - Lung cysts ... low attenuation pattern ... #Diagnosis #Radiology ... TractionBronchiectasis #Cysts
Algorithm for Diagnosis of Diffuse Cystic Lung Disease (DCLD)
Round, smooth cysts with normal lung parenchyma in
Algorithm for Diagnosis ... Round, smooth cysts ... - PLCH Round cysts ... /FB, LCDD, SS Cyst ... pattern not consistent
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
Nodular pattern( ... before the typical cysts ... CTChest #Nodular #Pattern ... #Comparison #Table
Lab patterns seen in Inborn Errors of Metabolism

A table of lab values compiled from UpToDate and
Lab patterns seen ... Metabolism A table ... metabolicemergency-pathophysiology-differential-pediatrics-metabolism-algorithm-diagnosis ... Peds #Pediatrics #Table ... IEM #Laboratory #Patterns
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 ... CTChest #Nodular #Pattern ... #Differential #Comparison
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
High-Res Chest CT ... Patterns - Differential ... Diagnosis Framework ... Antitripsyn Def • Cysts ... #Patterns #Differential
Causes of Cystic Renal Mass - Differential Diagnosis Algorithm
Benign - Anechoic on ultrasound, Well-demarcated on ultrasound/CT,
Algorithm Benign ... contrast - Simple Cysts ... sized kidneys, No cysts ... Multiple bilateral cysts ... Enlarged kidneys, Cysts