13 results
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
attenuation or ... - Emphysema - Lung ... cysts (LAM, LIP ... #Diagnosis #Radiology ... #Pulmonary #CTChest
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Low Attenuation ... Lymphangiomyomatosis (LAM ... effusion; sometimes pneumothorax ... #Clinical #Radiology ... #HRCT #CTChest
There is a hydropneumothorax.
Notice the air-fluid level (blue arrow).
The upper lobe is still attached to the
attached to the chest ... There is a lung ... LAM is a rare lung ... airways leading to pulmonary ... #Clinical #Radiology
Mosaic Attenuation on Chest CT
 • Variable attenuation seen on a chest CT in a lobular
Mosaic Attenuation ... Variable attenuation ... #CT #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
There is a hydropneumothorax.
Notice the air-fluid level.
The upper lobe is still attached to the chest wall
attached to the chest ... There is a lung ... LAM is a rare lung ... airways leading to pulmonary ... #Clinical #Radiology
On the left a case with multiple cysts that are evenly distributed througout the lung (
througout the lung ... Notice the pneumothorax ... Lymphangiomyomatosis (LAM ... #Clinical #Radiology ... #CTChest #LAM #
Head Cheese Sign on Chest CT
 • Juxtaposition of distinct radiographic areas of low, normal and
Cheese Sign on Chest ... normal and high attenuation ... Cheese #Sign #CT #Lung ... #Pulmonary #diagnosis ... #radiology #clinical
Sand Storm Sign on Chest CT
 • Diffusely dense pulmonary micronodular calcifications. Note the black pleural
Diffusely dense pulmonary ... arrow) • DDx: PAM ... SandStorm #Sign #CT #Lung ... #Pulmonary #diagnosis ... #radiology #clinical
Tree-in-Bud Sign on Chest CT
 • Multiple centrilobular nodules arranged in a linear branching pattern.
 •
Tree-in-Bud Sign on Chest ... arranged in a linear ... TreeInBud #Sign #CT #Lung ... #Pulmonary #diagnosis ... #radiology #clinical
Key findings in Lymphangiomyomatosis:
Numerous thin-walled cysts, surrounded by normal parenchyma.
Cysts range from 2mm to 5cm in
throughout the lungs ... Recurrent pneumothorax ... typical case of LAM ... #Clinical #Radiology ... #CTChest #Lymphangiomyomatosis