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The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
These include: - Emphysema ... Radiology #Pulmonary #CTChest ... LowAttenuation #Differential ... TractionBronchiectasis #Cysts #Emphysema ... #SignetRing #RadiologyAssistant
Empyema Necessitans (EN) on Chest Wall Physical Examination

Pulmonary teaching case: you are called to the bedside
Empyema Necessitans ... Pulmonary teaching case ... control) - in some cases ... PhysicalExam #clinical #video ... #pulmonary #respiratory
Empyema Necessitans (EN) on Chest POCUS

Pulmonary teaching case: you are called to the bedside of a
Empyema Necessitans ... Pulmonary teaching case ... This is Empyema ... #clinical #video ... POCUS #pulmonary #respiratory
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
(centrilobular emphysema ... - Respiratory bronchiolitis ... HRCT #ChestCT #Differential ... #Upper #Lower #RadiologyAssistant
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Centrilobular emphysema ... low attenuation areas ... Radiology #HRCT #CTChest ... Comparison #Table #RadiologyAssistant
Flail Chest on Physical Exam
Flail chest after 3 or more ribs are broken in 2 areas
Flail Chest on Physical ... Exam Flail chest ... are broken in 2 areas ... PhysicalExam #Breathing #respiratory ... #clinical #video
Causes of Apparent Life Threatening Event (ALTE) - Differential Diagnosis Algorithm
Cardiac:
 • Congenital Heart Disease
 •
Causes of Apparent ... Event (ALTE) - Differential ... Central Apnea Respiratory ... Sepsis • Upper Respiratory ... Infection • Empyema
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Centrilobular emphysema ... low attenuation areas ... Radiology #HRCT #CTChest ... Comparison #Table #RadiologyAssistant
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Differential diagnosis ... Centrilobular emphysema ... Diagnosis #Radiology #CTChest ... Cystic #Cysts #Differential ... Comparison #Table #RadiologyAssistant
A serious case of Flail chest. This is a medical emergency!

Medical Talk @TheMedicalTalk

#Flail #Chest #Breathing #Pattern
A serious case of ... Flail chest. ... TheMedicalTalk #Flail #Chest ... Pattern #Trauma #Video ... PhysicalExam #Pulmonary #Respiratory