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Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
there are four patterns ... and what kind of pattern ... the most common pattern ... The cystic pattern ... Langerhans cell histiocytosis
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
Nodular pattern( ... Langerhans cell histiocytosis ... CTChest #Nodular #Pattern
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
The fourth pattern ... Langerhans cell histiocytosis ... low attenuation pattern
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Low Attenuation pattern ... Langerhans cell histiocytosis ... LowAttenuation #Cystic #Pattern
On the left a chest film of a 19 year old patient with Langerhans cell histiocytosis.
The
Langerhans cell histiocytosis ... is a reticular patern ... recognized that this pattern ... Langerhans cell histiocytosis ... LangerhansCellHistiocytosis #Histiocytosis
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
with a nodular pattern ... Langerhans cell histiocytosis ... CTChest #Nodular #Pattern
Cystic versus Reticular
It can be difficult to determine whether we are dealing with a reticular pattern
with a reticular pattern ... or a cystic pattern ... Langerhans cell histiocytosis ... or a reticular pattern
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
High-Res Chest CT Patterns ... Congenital, Langerhans Histiocytosis ... HighRes #Chest #CT #Patterns
Clinical Classification of Pulmonary Hypertension

1. Pulmonary arterial hypertension from pulmonary vasculopathy
Idiopathic pulmonary arterial hypertension
Heritable gene mutations
and obstructive pattern ... Langerhans cell histiocytosis
An Approach to Jaundice Workup Algorithm by CBC and LFT Pattern

- Dr. Eric Strong @DrEricStrong

#Jaundice #Workup
by CBC and LFT Pattern ... Workup #Algorithm #Patterns