Comparison of Imaging Findings between Granulomatosis with Polyangiitis and Eosinophilic Granulomatosis with Polyangiitis on Sinus CT: Importance of High-Density Opacification of the Paranasal Sinuses
These videos have been matched automatically. Contact us if they are not relevant.
These videos have been matched automatically. Contact us if they are not relevant.
View abstract on PubMed
Summary
This summary is machine-generated.High-density sinus opacification on CT scans can help differentiate eosinophilic granulomatosis with polyangiitis (EGPA) from granulomatosis with polyangiitis (GPA). Patients with EGPA show greater sinus opacification and higher Hounsfield units compared to GPA patients.
Area Of Science
- Radiology
- Immunology
- Otolaryngology
Background
- Granulomatosis with polyangiitis (GPA) and eosinophilic granulomatosis with polyangiitis (EGPA) are primary causes of chronic sinusitis in systemic granulomatous diseases.
- Both GPA and EGPA are small- to medium-sized vasculitides characterized by necrotizing granulomas but differ in clinical course and prognosis.
- High-density sinus opacification is noted in allergic fungal sinusitis with eosinophilic infiltrates, prompting investigation into its role in EGPA.
Purpose Of The Study
- To evaluate differences in sinus CT findings between GPA and EGPA patients.
- To focus on sinus secretion attenuation as a distinguishing factor.
- To compare CT findings with previously described features like bony destruction and sclerosis.
Main Methods
- Retrospective analysis of sinus CT scans from 31 GPA and 22 EGPA patients.
- Visual assessment and Hounsfield unit (HU) measurement of sinus secretion attenuation.
- Evaluation and comparison of Lund-Mackay scores, bony destruction, sclerosis, adjacent organ involvement, and nasal polyps.
- Logistic regression and ROC curve analysis to identify discriminating factors.
Main Results
- GPA patients exhibited more bony destruction, sclerosis, and adjacent organ involvement (P=.006, .048, .035).
- EGPA patients had higher Lund-Mackay scores and more nasal polyps (P=.078, .333).
- EGPA patients showed significantly higher prevalence of high-density sinus opacification and higher mean HU (P < .0001).
Conclusions
- High-density sinus opacification and higher mean HU on CT are more prevalent in EGPA than GPA.
- Secretion attenuation, alongside bony destruction, sclerosis, and adjacent organ involvement, aids in differentiating GPA from EGPA.
- CT-based assessment of sinus opacification offers valuable insights for distinguishing these vasculitides.
These videos have been matched automatically. Contact us if they are not relevant.
These videos have been matched automatically. Contact us if they are not relevant.
Related Concept Videos
Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
Echocardiography plays a role in assessing cardiac health and detecting heart conditions, with various types providing critical insights for diagnosis and treatment.
Types of Echocardiography
Transthoracic Echocardiography (TTE)
TTE is the most common type of echocardiogram which involves placing a transducer on the patient's chest, emitting sound waves to create heart images. TTE is invaluable for evaluating the heart's size, structure, and motion, making it particularly useful for...
The most common cardiovascular diagnostic test is an X-ray. It produces images of the heart, blood vessels, and adjacent structures.
Definition and Purpose
An X-ray, or radiograph, is a non-invasive method that uses ionizing radiation to take images of internal structures. It is mainly used in cardiac imaging to examine the heart, lungs, and major blood vessels, aiming to identify abnormalities in the heart's size, shape, and position, such as heart failure, congenital defects, and vascular...