Immunoglobulin G4-related Disease Complicated with Vascular Lesions: CT Findings in 21 Patients

Overview

Journal Diagn Interv Radiol

Publisher Galenos Publishing House

Date 2019 Jan 16

PMID 30644367

Citations 1

Authors

Lin Qi

Dingbiao Mao

Li Xiao

Xiu Jin

Ming Li

Yanqing Hua

Affiliations

Soon will be listed here.

Abstract

Purpose: We aimed to analyze multislice computed tomography (MSCT) imaging features of vasculitis in immunoglobulin G4-related disease (IgG4-RD).

Methods: In this retrospective study, we diagnosed 21 definite or possible IgG4-RD patients (71.4% male; mean age, 52.1±4.5 years) with vasculitis by MSCT and pathologic examination. The clinical background, laboratory analysis, pathologic results, CT images, and response to therapy were assessed and analyzed.

Results: Under enhanced MSCT, 50 vasculitic lesions were identified and were divided into five types (types A-E) according to the CT findings on the basis of luminal changes. There were more vasculitic lesions observed below the diaphragm (n=30) than above it (n=20). Aneurysms and aneurysmal dilatation were more likely to be found in the aortaventralis (n=5), aortic arch (n=3) and iliac arteries (n=3). Most of the vascular lesions were characterized by wall thickening with a normal lumen (n=15) and slight stenosis (n=22). The affected vascular walls were all thickened between 4 and 18 mm. The walls of 19 patients (90.4%) were well circumscribed. The wall thickness of the aorta, including the aortaventralis and aortic arch, was more notable than that of the other vascular sites. Fourteen patients were followed up for 2-24 months. Wall thickness decreased in all cases. The average maximum thicknesses before and after therapy were 12.2±2.7 mm and 6.1±1.8 mm, which were significantly different (P < 0.001). The lumens of two patients were found to be slightly enlarged, while those of the other cases were unchanged after therapy.

Conclusion: IgG4-RD vascular lesions can be divided into five types, which are more likely to be present in the aorta and its main branches, and can rapidly diminish after steroid therapy. The lumen may be unchanged or slightly enlarged.

Citing Articles

Multimodality Imaging Features of Immunoglobulin G4-related Vessel Involvement.

OShea A, Crotty R, Randhawa M, Oliveira G, Perugino C, Stone J Radiol Cardiothorac Imaging. 2024; 6(2):e230105.

PMID: 38483247 PMC: 11056752. DOI: 10.1148/ryct.230105.

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