IgG4-Related Arterial Disease.

Area of Science:

• Vascular Surgery
• Immunology
• Rheumatology

Background:

• Immunoglobulin G4-related diseases (IgG4-RD) are systemic inflammatory conditions.
• IgG4-related inflammatory abdominal aortic aneurysms (AAA) involve vascular lesions, primarily in the aorta and medium-sized arteries.
• Lesions affect the adventitia, causing thickening and inflammatory cell infiltration.

Purpose of the Study:

• To describe IgG4-related inflammatory abdominal aortic aneurysms.
• To highlight the characteristics and clinical significance of these vascular lesions.
• To discuss diagnostic criteria and treatment strategies.

Main Methods:

• Review of existing literature and case descriptions.
• Analysis of clinical symptoms, imaging findings, and histopathology.
• Evaluation of treatment outcomes for aneurysmal and inflammatory components.

Main Results:

• IgG4-related vascular lesions frequently occur in the aorta, with or without aneurysmal changes.
• Clinical presentations include fever, abdominal pain, hydronephrosis, or asymptomatic findings.
• Diagnosis relies on imaging, elevated serum IgG4, and histopathology.

Conclusions:

• IgG4-related inflammatory abdominal aortic aneurysms require special attention due to rupture risk.
• Treatment involves surgical repair for aneurysms and steroids for inflammation.
• Prompt diagnosis and management are essential for preventing fatal outcomes.