title: [The influence of navigation on endoscopic sinus surgery].
abstract: BACKGROUND
  Over the last few years, navigation systems have been used in endoscopic sinus surgery (ESS). We were interested determining whether this has repercussions on surgical procedures.
  
  
  METHODS
  From December 2003 to April 2006, we prospectively evaluated all navigated ESS procedures (Vector vision, Brain lab) by means of a questionnaire. Numerous data were determined including diagnosis, navigation benefit, difficulty of the operation, radiological score and complications.
  
  
  RESULTS
  Navigated ESS was carried out on 106 patients (54 male symbol; 52 female symbol, average age 55 years) with the following diagnoses: 59 chronic sinusitis with nasal polyposis (13 primary surgery, 46 revision surgery), 14 mucocele, 8 benign tumour, 10 malignant sinonasal tumour, and 15 other diseases. There was only a slight correlation between the difficulty of the operation and the use of navigation (r=0.51, P=0.00) and no significant correlation between the radiological score with chronic sinusitis and the use of navigation (r=0.22, P=1.23). On the other hand, we found a significant difference between the benefit of navigation using primary and revision functional ESS in cases of chronic sinusitis with nasal polyps (P=0.005). The degree of benefit of navigation for the different diagnoses was in descending order: recurrent polyposis, mucocele, osteoma, malignant tumors, polyposis (primary surgery) and inverted papilloma. Without navigation, 15 operations (14%) would not have been possible as an endonasal procedure, and 12 operations (11%) would not have been carried out thoroughly enough. In spite of navigation in three operations (3%) the endonasal approach had to be changed to a transfacial approach. Twelve slight and three serious complications (1 dura defect + pneumoencephalos, dura defect, meningitis without CSF leak) occurred.
  
  
  CONCLUSIONS
  Navigation exerts a substantial influence on the execution of the ESS by clearly extending its possibilities.
authors.affiliation: Kopf- und Halschirurgie, Klinik für HNO-Heilkunde, Flemmingstrasse 2, 09116 Chemnitz. jens.oeken@skc.de
authors.forename: J
authors.initials: J
authors.lastname: Oeken
authors.forename: J
authors.initials: J
authors.lastname: Törpel
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D004724:Endoscopy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009078:Mucocele / Q000601:surgery*; D009298:Nasal Polyps / Q000601:surgery*; D010016:Osteoma / Q000601:surgery*; D018308:Papilloma, Inverted / Q000601:surgery*; D010255:Paranasal Sinus Neoplasms / Q000601:surgery*; D011183:Postoperative Complications / Q000209:etiology; D011446:Prospective Studies; D012852:Sinusitis / Q000601:surgery*; D025321:Surgery, Computer-Assisted; D013673:Technology Assessment, Biomedical; D014057:Tomography, X-Ray Computed; D020535:Video-Assisted Surgery