# Multimodal imaging in Ig G4- related aortitis: case report

## TL;DR

A 56-year-old patient with unexplained fever and chest/lumbar pain was diagnosed with Ig G4-related aortitis using multimodal imaging, and showed improvement after immunosuppressive therapy.

## Contribution

Demonstrates the utility of multimodal imaging in diagnosing Ig G4-associated aortitis and monitoring treatment response.

## Key findings

- Multimodal imaging identified diffuse thoracic aortitis without aortic valve involvement.
- Five-month follow-up showed reduced inflammation after immunosuppressive therapy.

## Abstract

We present the case of a 56-year-old patient with fever of unknown origin associated with chest and lumbar pain. Multimodality imaging revealed diffuse peri-aortitis in the thoracic aorta without involvement of the aortic valve, contributing substantially to the diagnosis of Ig G4-associated aortitis. Immunosuppressive therapy was started. Follow-up at five months with cardiac magnetic resonance imaging showed a reduction in the inflammatory process in the thoracic aorta.