12 results
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... about imaging findings ... low attenuation (table ... #Pulmonary #CXR ... Pattern #Differential
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
listed in the table ... have specific patterns ... on HRCT and histology ... #Diagnosis #Radiology ... #Pulmonary #CTChest
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
on the basis of HRCT ... findings. ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... LowAttenuation #Differential
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
resolution of the HRCT ... in ground glass pattern ... bronchiolitis #Diagnosis ... #Radiology #Pulmonary ... #GroundGlass #Differential
Septal thickening
Thickening of the lung interstitium by fluid, fibrous tissue, or infiltration by cells results in
cells results in a pattern ... a predominant finding ... diagnosis (Table ... pulmonary edema ... #Pulmonary #HRCT
Figure 3 HRCT-LUS correlation in normal lung, pulmonary congestion, rheumatoid lung disease, idiopathic pulmonary fibrosis.
Notes: (A)
artifact); (G) UIP pattern ... #Clinical #Diagnosis ... #HRCT #POCUS #Lung ... #Correlation #Table ... #ILD #Findings
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
Algorithm for nodular pattern ... bronchovascular interstitium ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... MultipleNodules #Nodules #Differential
Reticular pattern 
1. Lymphangitic carcinomatosis: irregular septal thickening, usually focal or unilateral 50% adenopathy', known carcinoma.
2.
Reticular pattern ... edema: incidental finding ... in HRCT, smooth ... peribronchovascular interstitium ... #Comparison #Table
Antinuclear Antibodies (ANA)
ANA or Anti-NucIear Antibody refers to antibodies against antigens in the nucleus → like
physical exam findings ... Bowel Disease, Interstitial ... Pulmonary Fibrosis ... #rheumatology #diagnosis ... #differential
On the left a smoker with RB-ILD with subtle HRCT-findings.
The dominant pattern is ground glass opacification.
Additional
RB-ILD with subtle HRCT-findings ... The dominant pattern ... there is a broad differential ... diagnosis and additional ... interpretion of the HRCT