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Radiologists use many terms to describe areas of decreased density or lucencies within the lung, like
lucencies within the lung ... , like cyst, cavity ... density in the lung ... visible wall #CXR ... #Cyst #Lung #Pulmonary
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
the surrounding lung ... Cysts occur without ... Radiology #CTChest #Cavity ... #Cyst #Emphysema ... #Comparison #RadiologyAssistant
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
result in decreased lung ... - Emphysema - Lung ... cysts (LAM, LIP ... Differential #Diagram #Comparison ... Emphysema #SignetRing #RadiologyAssistant
On the left three different patients with lung cysts.
From left to right: Lymphangiomyomatosis, LIP and Langerhans
patients with lung ... cysts. ... CTChest #Cystic #Comparison ... Histiocytosis #RadiologyAssistant
There is a hydropneumothorax.
Notice the air-fluid level (blue arrow).
The upper lobe is still attached to the
There is a lung ... cyst in the upper ... leading to pulmonary cyst ... Clinical #Radiology #CXR ... Lymphangioleiomyomatosis #LAM #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
in interstitial lung ... is interstitial lung ... On a CXR the most ... When the cysts have ... #Differential #RadiologyAssistant
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
densities iin the left lung ... cavitation in the right lung ... Clinical #Radiology #CXR ... #SepticEmboli #Cavity ... #RadiologyAssistant
Lungcancer
10% of lungcancers cavitate, most commonly squamous cell carcinoma.
Small cell lungcancer does not cavitate.
Bronchoalveolar carcinoma, or
large cavitating lung ... Clinical #Radiology #CXR ... LungCancer #Cancer #Cavity ... #Cavitary #RadiologyAssistant
Lung infarction
Same patient.
On follow up films first a cyst is seen.
One year later there is a
Lung infarction ... films first a cyst ... Clinical #Radiology #CXR ... LungInfarct #Infarct #Cyst ... SecondaryInfection #RadiologyAssistant
Stage I - Redistribution
In a normal chest film with the patient standing erect, the pulmonary vessels
supplying the upper lung ... supplying the lung ... In these cases comparison ... Clinical #Radiology #CXR ... Redistribution #RadiologyAssistant