musculoskeletal and connective tissue disorders
Polyarteritis Nodosa (PAN)
Prognosis for PAN
Without treatment, 5-year survival is<15%. With treatment, 5-year survival is>80% but may be lower for patients with hepatitis B. Prognosis is better if disease remission is achieved within 18 months after diagnosis. Relapses are less common than in other vasculitic disorders. The following findings are associated with a poor prognosis: Renal insufficiency Gastrointestinal involvement Neurologic involvement 