Ruptured gastric artery aneurysm: An uncommon manifestation of microscopic polyangiitis

Table 1 Laboratory test results on admission

Variable	Normal value	Inpatient result
White blood cell count, cells/mm3	4500-8000	137001
Differential cell count, %
Neutrophils	28-72	821
Lymphocytes	18-58	141
Monocytes	0-7	3
Red blood cell count, cells/mm3	4100000-5300000	4010000
Hemoglobin, mg/dL	14-18	11.91
Hematocrit, %	40-48	36.11
Platelet count, platelets/mm3	130000-350000	1570000
International normalized ratio	≤ 1.2	3.531
Activated partial thromboplastin time, s	31-47	40
Glucose, mg/dL	65-110	3171
Hemoglobin A1c, %	4.3-5.8	6.61
Sodium, mEq/L	135-147	144
Potassium, mEq/L	3.3-4.8	4.2
Bicarbonate, mmol/L	22-26	18.01
Urea nitrogen, mg/dL	8-20	8.2
Creatinine, mg/dL	0.44-1.15	1.13
Creatine kinase, U/L	24-195	96
Total bilirubin, mg/dL	0.2-1.0	1.0
Albumin, mg/dL	3.8-5.3	3.71
Total protein, mg/dL	6.7-8.3	5.71
Aspartate aminotransferase, U/L	8-38	26
Alanine aminotransferase, U/L	4-44	23
Gamma-glutamyl transpeptidase, U/L	6-88	41
Alkaline phosphatase, U/L	104-338	213
Amylase, U/L	41-110	55
Lactate dehydrogenase, U/L	106-211	200
C-reactive protein level, mg/L	< 3.0	3.51
Hepatitis B surface antigen	Negative	Negative
Hepatitis C virus antibody	Negative	Negative

¹Abnormal result.

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.