Contained Ruptured Paravisceral Aortic Aneurysm Related to Immunoglobulin G4 Aortitis

IgG4-related inflammatory AAAs are rare; this is the first report of one with a contained rupture. The patient's symptoms, the unusual appearance on computed tomography, the presence of popliteal aneurysms in a woman, and the normal WBC scan were indicative of an inflammatory etiology. Tissue biopsy was critical to obtain histological diagnosis and direct treatment.