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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
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
lung disease comes ... four patterns: reticular ... On a Chest X-Ray ... lung disease and ... in many cases UIP
The CXR demonstrates a reticular interstitial pattern with a preference at the lung bases.
The HRCT demonstrates
demonstrates a reticular ... interstitial pattern ... preference at the lung ... Radiology #CXR #UIP ... #CTChest #Reticular
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
On the left a chest film of a patient with UIP due to IPF.
The findings on
changes in the basal lung ... honeycombing comprises reticular ... Radiology #CXR #CTChest ... #Usual #Interstitial ... #Pneumonitis #Reticular
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
Rheumatoid arthritis (RA): Extra-articular manifestations
Skin: 
 • Inflammation of skin (esp. over areas of stress) forms
Ulcers, Livedo reticularis ... friction rub audible Lungs ... tends to cause interstitial ... lung disease/pulmonary ... pathophysiology #signs
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
Whenever you see an area of increased density within the lung, it must be the result
density within the lung ... opacities. 2- Interstitial ... tissue of the lung ... fine or coarse reticular ... the amount of air