title: [Modified intranasal endoscopic Lothrop procedure].
abstract: OBJECTIVE
  To report the experience of modified endoscopic Lothrop procedure (MELP) in 6 cases and to discuss the operative technique and indications.
  
  
  METHODS
  Six patients (four males and 2 females) aged from 6 to 63 years old with frontal sinus diseases were enrolled in this study, including 3 cases of frontal mucocele, 1 case of recurrent hemangioma, 1 case of recurrent inverted papilloma and 1 case of osteoma. All patients were underwent intranasal modified Lothrop procedure with the guidance of nasal endoscope. The image-guided navigational system was used for the location of frontal sinus in 2 cases.
  
  
  RESULTS
  The operation was successful in all 6 patients without any operative and postoperative complications. The average operation time was 3.2 h. The endoscopic examination demonstrated the wide communicational frontal sinus openings and well epithelization after 6-40 months follow-up. The patients were asymptomatic up to now and no recurrence was found.
  
  
  CONCLUSIONS
  The modified intranasal endoscopic Lothrop procedure is an ideal surgical approach for recalcitrant frontal sinus disorders on the basis of proper selection of surgical equipments and patients by the experienced surgeon.
authors.affiliation: Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital Affiliated to the Capital University of Medical Sciences, Beijing 100730, China. entzhou@263.net
authors.forename: Bing
authors.initials: B
authors.lastname: Zhou
authors.forename: De-min
authors.initials: DM
authors.lastname: Han
authors.forename: Luo
authors.initials: L
authors.lastname: Zhang
authors.forename: Qian
authors.initials: Q
authors.lastname: Huang
authors.forename: Hua-chao
authors.initials: HC
authors.lastname: Liu
authors.forename: Ming
authors.initials: M
authors.lastname: Liu
authors.forename: Yong-jie
authors.initials: YJ
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D004724:Endoscopy / Q000379:methods; D005260:Female; D005626:Frontal Sinus / Q000601:surgery; D015522:Frontal Sinusitis / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D010254:Paranasal Sinus Diseases / Q000601:surgery*; D055815:Young Adult