title: [Treatment of supraglottic carcinoma with carbon dioxide laser].
abstract: OBJECTIVE
  To evaluate the feasibility and curative effects of CO2 laser in treatment of supraglottic carcinoma.
  
  
  METHODS
  The retrospective analysis included 32 case of supraglottic carcinoma from February 1995 to June 2005, TNM classified as follows: T1N0M0: 20 cases, T1N1M0: 2 cases, T2N0M0: 8 cases and T2N1M0: 2 cases. The patients were treated with endoscopic laser surgery and selective neck dissection (12 cases) or functional neck dissection (4 cases). The follow-up period was more than 3 years.
  
  
  RESULTS
  Kaplan-Meier survival analysis shows the overall 5-year survival rate was 90.6%, and the 5-year survival rate of T1 lesions and T2 lesions was 95.6% and 78.2%, respectively. The overall 5-year local control rate was 96. 8%. The 5-year local-regional control rate was 90.3%. With T1 90.9% and T2 89.0% respectively. Two patients had local recurrences, one underwent salvage supraglottic horizontal laryngectomy, another one underwent total laryngectomy. Two cases with regional recurrences underwent radical neck dissection. One of them with concurrent local recurrence was survival after salvage operation. Another one with only regional lesion died of recurrence and pulmonary metastasis after treatment. Four patients experienced minor complications without sequelae. All survival patients had laryngeal preservation except the one who received total laryngectomy.
  
  
  CONCLUSIONS
  The results of this study show that endoscopic CO2 laser surgery is highly effective in the treatment of selected supraglottic carcinoma. It shows reliable curative effects and a high larynx preservation rate.
authors.affiliation: Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otorhinolaryngology Head and Neck Surgery, Ministry of Education, Beijing 100730, China.
authors.forename: Zhi-gang
authors.initials: ZG
authors.lastname: Huang
authors.forename: De-min
authors.initials: DM
authors.lastname: Han
authors.forename: Xin
authors.initials: X
authors.lastname: Ni
authors.forename: Ju-gao
authors.initials: JG
authors.lastname: Fang
authors.forename: Xiao-hong
authors.initials: XH
authors.lastname: Chen
authors.forename: Zhen-kun
authors.initials: ZK
authors.lastname: Yu
authors.forename: Xue-jun
authors.initials: XJ
authors.lastname: Chen
authors.forename: Wei-guo
authors.initials: WG
authors.lastname: Zhou
authors.forename: Jun-wei
authors.initials: JW
authors.lastname: Huang
mesh_terms: D000328:Adult; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000401:mortality / Q000601:surgery*; D005260:Female; D005931:Glottis; D006801:Humans; D007822:Laryngeal Neoplasms / Q000401:mortality / Q000601:surgery*; D007825:Laryngectomy / Q000379:methods; D053685:Laser Therapy; D054020:Lasers, Gas; D008297:Male; D008875:Middle Aged; D015996:Survival Rate; D016896:Treatment Outcome