11 results
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
pattern The algorithm ... are visible, the pattern ... Pulmonary #HRCT #CTChest ... #NodularPattern ... #Nodular #Pattern
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
with a nodular pattern ... Miliary TB: random ... #Nodular #Pattern ... #NodularPattern ... #Differential #
The distribution of nodules shown on HRCT is the most important factor in making an accurate
in the nodular pattern ... In most cases small ... Pulmonary #HRCT #NodularPattern ... #Nodular #Pattern ... Perilymphatic #Comparison
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... there are four patterns ... nodular, high and low ... The cystic pattern ... seen and in many cases
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
The fourth pattern ... diseases with a low ... attenuation pattern ... LowAttenuation #Differential ... #Diagram #Comparison
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
Patterns - Differential ... Honeycombing - See Low ... Nodular: • Random ... Water, Tumor Low ... #CT #Patterns #
Basic Interpretation
A structured approach to interpretation of HRCT involves the following questions:
What is the dominant HR-pattern:
reticular
nodular
high
the dominant HR-pattern ... consolidation) low ... perilymphatic or random ... Pulmonary #HRCT #CTChest ... Interpretation #Algorithm
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
non-specific, ESR usually low ... Goodpasture's cause ... , low grade proteinuria ... • IF staining patterns ... Renal #Syndromes #differential
Chronic hypersensitivity pneumonitis (2)
The case on the left shows an inspiratory and expiratory scan: the mosaic
scan: the mosaic pattern ... attenuation and areas of low ... with a mozaic pattern ... included in the differential ... Clinical #Radiology #CTChest
Lobar atelectasis or lobar collaps is an important finding on a chest x-ray and has a
important finding on a chest ... has a limited differential ... The most common causes ... Lobar #Collapse #Patterns ... #Comparison #RadiologyAssistant