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Polyarteritis nodosa (PAN) is a necrotising vasculitis of medium-sized vessels of unknown origin. This type of vasculitis is usually systemic, but restriction to a single organ, for example the testis, the appendix or the gall bladder, can occur. Testicular pain or tenderness are frequent clinical features. In this report, we present three cases of PAN. In every patient, testicular pain was the main symptom or first sign of systemic disease. We state that a thorough history taking, clinical examination and biochemical analyses are obligatory in patients presenting with acute or chronic scrotal pain. Polyarteritis nodosa should always be taken into account, and a search for systemic spread is mandatory. We emphasize that before initiation of systemic therapy with corticosteroids and/or cyclophosphamide, a Five Factor Score should be obtained, which also gives crucial prognostic information.

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