[Persistant chronic rhinosinusitis after endonasal sinus surgery].

Reasons for recurrent or persistent chronic rhinosinusitis could be the operation technique of the primary surgery, postoperative scarring, persistent inflammation or pathophysiologic agent or local factors. The management should be individualized and demands precise analysis of the clinical problem of the patient, nasal endoscopy and CT examination. Dependent on the results conservative or surgical therapy is mandatory. Medical and operative approaches are discussed in detail.