44 results
Connective tissue disease-associated interstitial lung diseases

LIP: lymphoid interstitial pneumonia. NSIP: nonspecific interstitial pneumonia. OP: organizing pneumonia.
lung diseases ... LIP: lymphoid ... I-JIP: usual interstitial ... AIP: acute interstitial ... #Differential #Comparison
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
Thickening of the interstitium ... the result of air ... the alveoli) or interstitial ... lung disease (i.e ... Radiology #Pulmonary #CTChest
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 ... Radiology #Pulmonary #CTChest ... Differential #Diagram #Comparison
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
The idiopathic interstitial ... responses of the lung ... involvement of the lung ... , OP and LIP have ... Radiology #Pulmonary #CTChest
On the left three different patients with lung cysts.
From left to right: Lymphangiomyomatosis, LIP and Langerhans
patients with lung ... Lymphangiomyomatosis, LIP ... Diagnosis #Radiology #CTChest ... #Cystic #Comparison ... #LAM #LIP #Histiocytosis
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
lung disease comes ... On a Chest X-Ray ... lung disease and ... detected on a chest ... in many cases UIP
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
feeding vessel sign ... feeding vessel sign ... densities iin the left lung ... cavitation in the right lung ... Radiology #CXR #CTChest
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
: 'signet ring sign ... central dot. - LIP ... Diagnosis #Radiology #CTChest ... #Differential #Comparison
Pneumonia on Chest Xray and POCUS

Extensive pneumonia in lower left lobe (red arrow). 
POCUS: Dynamic air
Pneumonia on Chest ... POCUS: Dynamic air ... AirBronchogram #POCUS #CXR #Comparison ... #Clinical #Lung
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
(assumes Room Air ... Embolism, Obstructive Lung ... Disease, Interstitial ... Pulmonary Fibrosis, Interstitial ... Lung Disease