9 results
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
about imaging findings ... lung disease comes ... lung disease and ... Diagnosis #Radiology #Pulmonary ... #CXR #Interstitial
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
Septal thickening
Thickening of the lung interstitium by fluid, fibrous tissue, or infiltration by cells results in
Thickening of the lung ... lung disease, it ... a predominant finding ... pulmonary edema ... or lymphoma and alveolar
On the left a chest film of a patient with UIP due to IPF.
The findings on
The findings on ... reticulation with a lower lobe ... Clinical #Radiology #CXR ... #CTChest #UIP # ... UsualInterstitialPneumonitis #Usual #Interstitial
Reticular pattern 
1. Lymphangitic carcinomatosis: irregular septal thickening, usually focal or unilateral 50% adenopathy', known carcinoma.
2.
Reticular pattern ... finding in HRCT ... peribronchovascular interstitium ... Alveolar proteinosis ... Radiology #HRCT #CTChest
Based on the images alone, it is usually not possible to determine the cause of the
findings. ... edema - filling ... of the alveoli ... lung disease, that ... Diagnosis #Radiology #CXR
Amiodarone Induced Lung Toxicity Summary

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

How?  Possible
Characteristic finding ... macrophages in alveolar ... glass opacities • Reticular ... ground glass or reticular ... and confirmatory findings
Uncommon Causes of Noncardiogenic Pulmonary Edema (NCPE) - Differential Diagnosis Framework

High Altitude Pulmonary Edema:
 • Accumulation
blood cells in the lung ... common assessment findings ... interstitium and ... alveoli thus increases ... pathophysiologic finding
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. ... Radiology #CHF #CXR ... #Features #Findings