Ruptured gastric artery aneurysm: An uncommon manifestation of microscopic polyangiitis

Table 2 Results of serological tests that was performed when purpura appeared

Variable	Normal value	Inpatient result
C-reactive protein level, mg/L	< 3.0	91.62
C3, mg/dL	65-135	97
C4, mg/dL	13-35	24
IgG, mg/dL	800-1700	1567
IgA, mg/dL	110-410	4872
IgM, mg/dL	33-190	78
Rheumatoid factor, units/mL	≤ 15	12
Antinuclear antibodies	< 1:40	< 1:40
Cytoplasmic ANCA1	< 1:10	< 1:10
Perinuclear ANCA1	< 1:10	< 1:10

¹ANCA: Antineutrophil cytoplasmic antibody;

²Abnormal result.