[The polyangiitis overlap-Schönlein-Henoch purpura-PAN syndrome: a case of more than a rare association].

A fifty-four-years old male with palpable purpura, polyarthritis and nephritic syndrome is presented. The renal biopsy disclosed mesangial proliferation with IgA deposits. During hospitalization abdominal pain and upper digestive bleeding also presented. Digital angiography showed splenic artery microaneurysms. Then it's a new case of polyangiitis overlap with mixed features of Schönlein-Henoch purpura and polyarteritis nodosa. Differential diagnosis between several vasculitic associations in a patient is discussed.