Spontaneous liver rupture as first sign of polyarteritis nodosa

Table 1 For classification purposes, a patient shall be said to have polyarteritis nodosa if at least 3 of these 10 criteria are present

Criteria diagnosis of polyarteritis nodosa
Weight loss	Loss of 4 kg or more of body weight since illness began, not due to dieting or other factors
Livedo reticularis	Mottled reticular pattern over the skin or portions of the extremities or torso
Testicular pain or tenderness	Pain or tenderness of the testicles, not due to infection, trauma, or other causes
Myalgias, weakness or leg tenderness	Diffuse myalgias (excluding shoulder and hip girdle)
Mononeuropathy or polyneuropathy	Development of mononeuropathy, multiple mononeuropathys, or polyneuropathy
Diastolic BP > 90 mmHg	Development of hypertension with diastolic BP higher than 90 mmHg
Elevated BUN or creatinine	Elevation of BUN > 40 mg/dL or creatinine > 1.5 mg/dL, not due to dehydration or obstruction
Hepatitis B virus	Presence of hepatitis B surface antigen or antibody in serum
Ateriographic abnormality	Arteriogrm showing aneurysms or occlusions of the visceral arteries, not due to arteriosclerosis, fibromuscular dysplasa, or other noninflammatory causes
Biopsy of small or medium-sized artery containing PMN	Histologic changes showing the presence of granulocytes or granulocytes and mononuclear leukocytes in the artery wall

Avaialable from: Lightfoot RW Jr, Michel BA, Bloch DA, Hunder GG, Zvaifler NJ, McShane DJ, et al. The American College of Rheumatology: 1990 criteria for the classification of polyarteritis nodosa. Arthritis Rheum 1990; 33: 1088-1093. BP: Blood pressure; BUN: Blood urea nitrogen; PMN: Polymorphonuclear neutrophils.