33 results
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Lymphangiomyomatosis (LAM ... effusion; sometimes pneumothorax ... Radiology #HRCT #CTChest ... Pattern #Comparison #Table ... #RadiologyAssistant
There is a hydropneumothorax.
Notice the air-fluid level (blue arrow).
The upper lobe is still attached to the
attached to the chest ... LAM is a rare lung ... airways leading to pulmonary ... LAM also occurs ... #RadiologyAssistant
Life Threatening Causes of Chest Pain - Differential Diagnosis Table

 • ACS
 • Aortic Dissection
 •
Differential Diagnosis Table ... Dissection • Pulmonary ... Embolism • Pneumothorax ... #ChestPain #Chest ... differential #diagnosis #table
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
- Lung cysts (LAM ... Diagnosis #Radiology #Pulmonary ... #CTChest #LowAttenuation ... Emphysema #SignetRing #RadiologyAssistant
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Cystic LCH: - LAM ... Diagnosis #Radiology #CTChest ... Differential #Comparison #Table ... #RadiologyAssistant
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Lymphangiomyomatosis (LAM ... Radiology #HRCT #CTChest ... Pattern #Comparison #Table ... #RadiologyAssistant
Lung Point in Pneumothorax

Lung ultrasound of a patient with SOB and chest pain after central line
Lung Point in Pneumothorax ... Lung ultrasound ... patient with SOB and chest ... #Lung #Point #pneumothorax ... POCUS #Clinical #Pulmonary
Chest Pain - Differential Diagnosis Algorithm
Cardiovascular Causes:
 - Outflow Obstruction
     • Aortic
Infarction • Stable ... • Myocarditis Pulmonary ... Vascular • Pulmonary ... present) • Pulmonary ... Pleura • Pneumothorax
Consolidation is synonymous with airspace disease.
When you think of the causes of consolidation, think of 'what
or tumor cells (Table ... Diagnosis #Radiology #Pulmonary ... #CTChest #Consolidation ... #Differential #RadiologyAssistant
Chest Pain - Diagnosis and Workup Algorithm

History and Exam
Acute life-threatening causes:
 • Acute myocardial infarction
 •
Chest Pain - Diagnosis ... dissection • Pneumothorax ... • Pulmonary embolism ... EKG • Bedside ultrasound ... MatthewHoMD #Chest