RESUMEN
P-ANCA small vessel vasculitis is multisystemic disease, especially frequently involving the kidney. Diagnosis is delayed because it's non-specific clinical manifestation. Recently ANCA becomes available tools for diagnosis of vasculitis. Infection and gastrointestinal complications are relatively common in vasculitis. But spontaneous rupture of gastrointestinal artery is a rare complication. A 61-year-old housewife was admitted due to poor oral intake, weight loss and microscopic hematuria. Renal biopsy showed an extensive necrotizing glomerulonephritis, consistent with Wegener's granulomatosis or microscopic polyangitis. Serum test showed positive for P-ANCA. Despite steroid therapy, she expired due to spontaneous rupture of right gastroepiploic artery.