11 results
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Left Shunt - Anatomic ... Disease, Interstitial ... Lung Disease ... UnremarkableLab #AA ... #Gradient #alveolar
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 ... 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 ... reticulation with a lower lobe ... Clinical #Radiology #CXR ... #CTChest #UIP # ... UsualInterstitialPneumonitis #Usual #Interstitial
Rheumatoid arthritis (RA): Extra-articular manifestations
Skin: 
 • Inflammation of skin (esp. over areas of stress) forms
Ulcers, Livedo reticularis ... friction rub audible Lungs ... pleural effusion on CXR ... tends to cause interstitial ... lung disease/pulmonary
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 #
Based on the images alone, it is usually not possible to determine the cause of the
between these chest ... filling of the alveoli ... this is nodular interstitial ... lung disease, that ... Diagnosis #Radiology #CXR
Amiodarone Induced Lung Toxicity Summary

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

How?  Possible
Amiodarone Induced Lung ... Direct cytotoxic lung ... macrophages in alveolar ... glass opacities • Reticular ... ground glass or reticular
Uncommon Causes of Noncardiogenic Pulmonary Edema (NCPE) - Differential Diagnosis Framework

High Altitude Pulmonary Edema:
 • Accumulation
blood cells in the lung ... the right middle lobe ... interstitium and ... alveoli thus increases ... infiltrates on chest
Bronchoalveolar Lavage (BAL) on Bronchoscopy 
BRONCHOALVEOLAR LAVAGE is a technique used in bronchoscopy for several diagnostic
concern (guided by chest ... Hemorrhage (DAH) — Pulmonary ... Alveolar Proteinosis ... often not helpful) Interstitial ... clinical #video #pulmonary