10 results
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Left Shunt - Anatomic ... Edema, Atelectasis ... , Obstructive Lung ... Lung Disease ... UnremarkableLab #AA
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
lung disease comes ... lung disease and ... seen and in many cases ... Diagnosis #Radiology #Pulmonary ... #CXR #Interstitial
Septal thickening
Thickening of the lung interstitium by fluid, fibrous tissue, or infiltration by cells results in
Thickening of the lung ... lung disease, it ... pulmonary edema ... or lymphoma and alveolar ... #HRCT #CTChest
On the left a chest film of a patient with UIP due to IPF.
The findings on
changes in the basal lung ... densities caused ... reticulation with a lower lobe ... Clinical #Radiology #CXR ... UsualInterstitialPneumonitis #Usual #Interstitial
UIP
UIP is a histologic pattern of pulmonary fibrosis.
On a chest X-ray UIP manifests as a reticular
histologic pattern of pulmonary ... On a chest X-ray ... particularly at the lung ... at the lung bases ... #Interstitial #
Rheumatoid arthritis (RA): Extra-articular manifestations
Skin: 
 • Inflammation of skin (esp. over areas of stress) forms
Ulcers, Livedo reticularis ... pleural effusion on CXR ... inflammation tends to cause ... interstitial lung ... disease/pulmonary
Based on the images alone, it is usually not possible to determine the cause of the
edema - filling ... of the alveoli ... this is nodular interstitial ... lung disease, that ... Diagnosis #Radiology #CXR
Uncommon Causes of Noncardiogenic Pulmonary Edema (NCPE) - Differential Diagnosis Framework

High Altitude Pulmonary Edema:
 • Accumulation
blood cells in the lung ... interstitium and ... alveoli thus increases ... edema can be caused ... #edema #causes
Amiodarone Induced Lung Toxicity Summary

Who?
• 5% of patients
• Dose ≥ 400 mg per day

How?  Possible
Amiodarone Induced Lung ... macrophages in alveolar ... glass opacities • Reticular ... Exclude other causes ... ground glass or reticular
Congestive heart failure (CHF) is the result of insufficient output because of cardiac failure, high resistance
fluid into the interstitium ... finally into the alveoli ... edema. ... disease and causes ... Radiology #CHF #CXR