title: 5 years follow up after transnasal endoscopic surgery of Thornwaldt's cyst with powered instrumentation.
abstract: OBJECTIVE
  To assess the long term results of a transnasal endoscopic, power-assisted marsupilization of Thornwaldt's cyst (TC).
  
  
  METHODS
  Patients who were operated and followed up at our institution for the management of symptomatic TC in the period from February 2002 till May 2012 were included in the study. All the patients were operated through a transnasal endoscopic power-assisted marsupilization of the cyst.
  
  
  RESULTS
  Eleven patients with a diagnosis of TC (by nasaoendoscopy, CT and MRI) were included in this study. They included six males and five females with age ranging from 15 to 55 years. Transnasal endoscopic, power-assisted marsupilization was performed for all cases with no intra- or postoperative complications. Throughout 5 years follow up, no recurrence of the cyst or its related symptoms were reported.
  
  
  CONCLUSIONS
  Long term (5 years) follow up showed that transnasal endoscopic marsupilization of Thornwaldt's cyst using micodebrider is a safe and effective maneuver with no cyst recurrence, eustachian tube affection or post-operative complications.
authors.affiliation: Otorhinolaryngology, Head and Neck Surgery Department, Faculty of Medicine, Zagazig University, Egypt. Electronic address: mwenteg@yahoo.com.
authors.forename: Mohammad Waheed
authors.initials: MW
authors.lastname: El-Anwar
authors.affiliation: Otorhinolaryngology, Head and Neck Surgery Department, Faculty of Medicine, Zagazig University, Egypt.
authors.forename: Hazem Saeed
authors.initials: HS
authors.lastname: Amer
authors.affiliation: Otorhinolaryngology, Head and Neck Surgery Department, Faculty of Medicine, Zagazig University, Egypt.
authors.forename: Ismail
authors.initials: I
authors.lastname: Elnashar
authors.affiliation: Otorhinolaryngology, Head and Neck Surgery Department, Faculty of Medicine, Zagazig University, Egypt.
authors.forename: Sherif Mohammad
authors.initials: SM
authors.lastname: Askar
authors.affiliation: Radiodiagnosis Department, Faculty of Medicine, Zagazig University, Egypt.
authors.forename: Ayman F
authors.initials: AF
authors.lastname: Ahmed
mesh_terms: D000293:Adolescent; D000328:Adult; D003560:Cysts / Q000601:surgery*; D003646:Debridement / Q000295:instrumentation; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009302:Nasopharyngeal Diseases / Q000601:surgery*; D057605:Natural Orifice Endoscopic Surgery / Q000295:instrumentation*; D009666:Nose
keywords: Microdebrider; Nasoendoscopy; Powered instrumentation; Thornwaldt's cyst