Immunoglobulin G4-related disease in the sigmoid colon in patient with severe colonic fibrosis and obstruction: A case report

Table 1 Rheumatism immunoassay results

Test items	Results	Reference interval
Antinuclear antibody	Negative	Negative
Anti-nuclear chromatin antibody	1.0	≤ 4.0 negative
Anti-RNP-A antibody	< 0.2	< 1.0 negative
Anti-RNP-68 antibody	< 0.2	< 1.0 negative
Anti-Sm/nRNP antibody	< 0.2	< 1.0 negative
Anti-Sm antibody	< 0.2	< 1.0 negative
Anti-SS-A antibody	< 0.2	< 1.0 negative
Anti-Ro-52 antibody	< 0.2	< 1.0 negative
Anti-SS-B antibody	< 0.2	< 1.0 negative
Anti-Sci-70 antibody	< 0.2	< 1.0 negative
Anti-Jo-1 antibody	< 0.2	< 1.0 negative
Anti-ribosomal p protein antibody	< 0.2	< 1.0 negative
Anti-centromere b protein antibody	< 0.2	< 1.0 negative
Antineutrophil cytoplasmic antibody	Negative	Negative
Anti-protease 3 antibody	< 0.2	< 1.0 negative
Anti-myeloperoxidase antibody	< 0.2	< 1.0 negative
Anti-glomerular basement membrane antibody	< 0.2	< 1.0 negative

Table 2 Immunoglobulin G related indexes detection

Test items	Results	Reference interval
IgG	19.2	7.51-15.6
IgA	3.23	0.82-4.53
IgM	0.64	0.46-3.04
Complement 3	0.89	0.65-1.39
Complement 4	0.24	0.16-0.38
IgG1	10.20	4.05-10.11
IgG2	8.26	1.69-7.86
IgG3	0.368	0.11-0.85
IgG4	1.890	0.03-2.01 for IgG4-RD, cutoff value > 1.35

IgG4-RD: Immunoglobulin G4-related disease.