Published online Oct 27, 2022. doi: 10.4240/wjgs.v14.i10.1169
Peer-review started: July 10, 2022
First decision: August 19, 2022
Revised: September 3, 2022
Accepted: October 18, 2022
Article in press: October 18, 2022
Published online: October 27, 2022
Processing time: 107 Days and 6.6 Hours
Immunoglobulin G4-related disease (IgG4-RD) is an immune-mediated condition characterized by abundant IgG4 positive plasma cells and fibrosis in the affected tissues. It affects most parts of the body; however, there are not many reports on IgG4-RD involving the colon.
A 50-year-old man complaining of intermittent fever for more than two years was referred to our hospital. Based on various investigations before surgery, we diagnosed him with chronic perforation of the sigmoid colon caused by inflammatory change or tumor. IgG blood tests before the operation suggested IgG4-RD, and postoperative pathology confirmed this prediction.
We present a patient with IgG4-RD with colon involvement, which is an uncommon site. This report will expand the understanding of IgG4-RD in unknown tissues.
Core Tip: Immunoglobulin G4-related disease (IgG4-RD) is characterized by abundant IgG4 positive plasma cells and fibrosis in the affected tissues. It can affect most parts of the body, but there were not many reports of IgG4-RD in the intestines. This patient was an IgG4-RD case to be reported in the colon, which was identified by computed tomography, magnetic resonance imaging, pathology and blood tests of IgGs. This case report will help expand the understanding of IgG4-RD in some unknown tissues.