CT Features of Vasculitides Based on the 2012 International Chapel Hill Consensus Conference Revised Classification

Area of Science:

• Radiology
• Immunology
• Pathology

Background:

• Vasculitis involves heterogeneous inflammation of vessel walls, presenting diagnostic challenges.
• The International Chapel Hill Consensus Conference (CHCC) nomenclature provides a classification framework.
• Accurate diagnosis is crucial to avoid ineffective or harmful immunosuppressive therapy.

Purpose of the Study:

• To propose computed tomography (CT) features for diagnosing vasculitis based on the CHCC 2012.
• To establish a differential diagnosis strategy for vasculitis using CT findings.
• To highlight the importance of differentiating vasculitis from its mimics.

Main Methods:

• Review of CT imaging in patients with vasculitis.
• Correlation of CT findings with clinicopathological data and CHCC 2012 criteria.
• Analysis of morphological characteristics and anatomical location for differential diagnosis.

Main Results:

• Specific CT features associated with different types of vasculitis were identified.
• A systematic approach for differential diagnosis based on CT findings was developed.
• Key imaging features to differentiate vasculitis from mimic conditions were outlined.

Conclusions:

• CT is a valuable tool for the diagnosis and differential diagnosis of vasculitis.
• Utilizing CT features and location-based analysis improves diagnostic accuracy.
• Distinguishing vasculitis from mimics on CT prevents inappropriate treatment and improves patient outcomes.