20 results
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Low Attenuation pattern ... Lymphangiomyomatosis (LAM ... Radiology #HRCT #CTChest ... #Pattern #Comparison ... #Table #RadiologyAssistant
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Low Attenuation pattern ... Lymphangiomyomatosis (LAM ... Radiology #HRCT #CTChest ... #Pattern #Comparison ... #Table #RadiologyAssistant
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
The fourth pattern ... (LAM, LIP, Langerhans ... Radiology #Pulmonary #CTChest ... Differential #Diagram #Comparison ... Emphysema #SignetRing #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
On HRCT there are ... The cystic pattern ... When the cysts have ... seen and in many cases ... #Differential #RadiologyAssistant
Here are the most common examples of these four patterns on a chest x-ray (click image
Here are the most ... of these four patterns ... on a chest x-ray ... Nodule - Multiple Masses ... #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
with a nodular pattern ... before the typical cysts ... Radiology #Pulmonary #CTChest ... #Differential #Comparison ... #Table #RadiologyAssistant
Differential diagnosis of Lymphangiomyomatosis:
Langerhans cell histiocytosis: > 90% are smokers, cysts have irregular shapes and the
smokers, cysts ... another typical case ... of LAM. ... Clinical #Radiology #CTChest ... #Cystic #RadiologyAssistant
On the left a case with multiple cysts that are evenly distributed througout the lung (
On the left a case ... with multiple cysts ... was a 40 year old ... Clinical #Radiology #CTChest ... #Pneumothorax #RadiologyAssistant
Key findings in Lymphangiomyomatosis:
Numerous thin-walled cysts, surrounded by normal parenchyma.
Cysts range from 2mm to 5cm in
Cysts are distributed ... left a typical case ... of LAM with multiple ... Clinical #Radiology #CTChest ... #Cystic #RadiologyAssistant
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
indicates unknown cause ... are also common ... Radiology #Pulmonary #CTChest ... IdiopathicInterstitialPneumonia #ILD ... #Findings #RadiologyAssistant