10 results
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... there are four patterns ... low attenuation (table ... in many cases UIP ... #Pattern #Differential
Connective tissue disease-associated interstitial lung diseases

LIP: lymphoid interstitial pneumonia. NSIP: nonspecific interstitial pneumonia. OP: organizing pneumonia.
I-JIP: usual interstitial ... AIP: acute interstitial ... ConnectiveTissueDiseases #ILD ... CTILD #Diagnosis #Differential ... #Comparison #Table
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
listed in the table ... have specific patterns ... realise, that these patterns ... findings of NSIP, UIP ... IdiopathicInterstitialPneumonia #ILD
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
with a nodular pattern ... bronchiolitis: ill ... CTChest #Nodular #Pattern ... NodularPattern #Differential ... #Comparison #Table
Inflammatory Myopathies
Dermatomyositis
 • Onset: Subacute
 • Pattern: Proximal
 • CK: Up to 50X ULN
 • Autoantibodies:
: Subacute • Pattern ... : Subacute • Pattern ... or subacute • Pattern ... Insidious/slow • Pattern ... #rheumatology #table
Septal thickening
Thickening of the lung interstitium by fluid, fibrous tissue, or infiltration by cells results in
cells results in a pattern ... of reticular opacities ... has a limited differential ... diagnosis (Table ... SeptalThickening #Differential
Reticular pattern 
1. Lymphangitic carcinomatosis: irregular septal thickening, usually focal or unilateral 50% adenopathy', known carcinoma.
2.
Reticular pattern ... peribronchovascular interstitium ... HRCT #CTChest #Reticular ... #Pattern #Comparison ... #Table #RadiologyAssistant
Figure 3 HRCT-LUS correlation in normal lung, pulmonary congestion, rheumatoid lung disease, idiopathic pulmonary fibrosis.
Notes: (A)
artifact); (G) UIP ... pattern with subpleural ... , basal reticular ... #Correlation #Table ... #ILD #Findings
Algorithm for Diagnosis of Diffuse Cystic Lung Disease (DCLD)
Round, smooth cysts with normal lung parenchyma in
Algorithm for Diagnosis ... distribution - LIP ... LCDD, SS Cyst pattern ... presentations - ILD ... #Diagnosis #differential
Autoimmune Myositis - Differential Diagnosis Framework

Inflammatory Myopathies: Commonly symmetric proximal muscle weakness, no substantial muscle pain
Autoimmune Myositis - Differential ... Anti-MDA5 (RP-ILD ... slow onset and pattern ... weakness + atrophy- Hip ... #rheumatology #differential