28 results
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... four patterns: ... low attenuation (table ... the most common pattern ... The cystic pattern
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Nodular pattern ... Hypersensitivity pneumonitis: ill ... Clinical #Radiology #HRCT ... CTChest #Nodular #Pattern ... #Comparison #Table
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
pattern The algorithm ... are visible, the pattern ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... NodularPattern #Nodular #Pattern
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
Upper lung zone preference ... bronchiolitis (RB-ILD ... Pulmonary edema #Diagnosis ... Radiology #Pulmonary #HRCT ... #Differential #Table
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
Differential diagnosis ... The table summarizes ... to look at the pattern ... more than one pattern ... #Differential #Table
Lab patterns seen in Inborn Errors of Metabolism

A table of lab values compiled from UpToDate and
Lab patterns seen ... Metabolism A table ... metabolicemergency-pathophysiology-differential-pediatrics-metabolism-algorithm-diagnosis ... Peds #Pediatrics #Table ... IEM #Laboratory #Patterns
Here are the most common examples of these four patterns on a chest x-ray (click image
of these four patterns ... consolidation - Diffuse ... consolidation - Multifocal ill-defined ... Masses Atelectasis #Diagnosis ... Consolidation #Patterns
More than 100 entities manifest as diffuse lung disease.
Fortunately only about 10 of these account for
entities manifest as diffuse ... also uncommon HRCT-presentations ... various literature references ... some of them the old ... SHITFACED #Mnemonic #HRCT
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
listed in the table ... have specific patterns ... morphologic findings on HRCT ... realise, that these patterns ... #Diagnosis #Radiology
The distribution of nodules shown on HRCT is the most important factor in making an accurate
nodules shown on HRCT ... making an accurate diagnosis ... in the nodular pattern ... Random refers to no preference ... NodularPattern #Nodular #Pattern