[Vesical neuropathy in systemic vasculitis: 3 cases].

Bladder neuropathy was diagnosed in 3 patients with systemic vasculitis (temporal arteritis: 1 case; periarteritis nodosa: 2 cases). Clinical characteristics were: dysuria, diminished or abolished bladder sensation leading to indolent bladder retention. Urodynamic investigation showed hypotonic and underactive detrusor, increased detrusor compliance, hyposensitive bladder, and/or overactive urethral closure. Needle electrode examination showed signs of denervation of periurethral muscles; sacral evoked latencies were increased, favouring pudenal nerve alterations. Symptoms and urodynamic abnormalities resolved following corticosteroid therapy. Clinical and therapeutic implications of bladder neuropathy in necrotizing vasculitis are emphasized.