19 results
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
result in decreased lung ... - Lung cysts (LAM ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... #SignetRing #RadiologyAssistant
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Lymphangiomyomatosis (LAM ... Centrilobular emphysema ... #Clinical #Radiology ... #HRCT #CTChest ... #RadiologyAssistant
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Centrilobular emphysema ... Lymphangiomyomatosis (LAM ... #Clinical #Radiology ... #HRCT #CTChest ... #RadiologyAssistant
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Cystic LCH: - LAM ... Centrilobular emphysema ... central dot. - LIP #Clinical ... #CTChest #Cystic ... #RadiologyAssistant
On the left three different patients with lung cysts.
From left to right: Lymphangiomyomatosis, LIP and Langerhans
patients with lung ... #Clinical #Diagnosis ... #Radiology #CTChest ... Cystic #Comparison #LAM ... Histiocytosis #RadiologyAssistant
There is a hydropneumothorax.
Notice the air-fluid level (blue arrow).
The upper lobe is still attached to the
attached to the chest ... is a possible diagnosis ... LAM is a rare lung ... #Clinical #Radiology ... #RadiologyAssistant
Radiologists use many terms to describe areas of decreased density or lucencies within the lung, like
pneumatocele, emphysema ... we describe a chest ... with a thin wall Emphysema ... #Differential #Table ... #Pulmonary #Diagnosis
Empyema Necessitans (EN) on Chest POCUS

Pulmonary teaching case: you are called to the bedside of a
(EN) on Chest POCUS ... drain on POCUS ... - What’s the diagnosis ... #clinical #video ... #Lung
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On the left a typical case of panlobular emphysema.
There is uniform destruction of the underlying architecture
to widespread areas ... in the affected lung ... #Clinical #Radiology ... #CTChest #Panlobular ... #RadiologyAssistant
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
the differential diagnosis ... the surrounding lung ... #Clinical #Diagnosis ... #Radiology #CTChest ... #Comparison #RadiologyAssistant