title: [The status of protein P16 and P53 in the surgical margins of laryngeal carcinoma and the association with local recurrence].
abstract: OBJECTIVE
  To assess the status of P53 and P16 of surgical margins in laryngeal carcinoma and the association with the local recurrence following surgical treatment
  
  
  METHODS
  The status of P53 and P16 of surgical margins in laryngeal carcinoma was studied using immunohistochemistry (IHC) staining method in 100 cases of laryngeal carcinoma. Fifty-two of them had recurrent tumors while 48 cases were free of local recurrence after 5-year follow up. The original tumor sites and T stages, which bear important influence over the risk of local recurrence, were strictly matched between the two groups, and the ages and preoperative doses of radiation were also considered.
  
  
  RESULTS
  The percentage of local recurrence was 85% in these patients who showed positive staining for P53 and simultaneous negative staining for P16 in both the cancer tissues and the surgical margins. No association was found between the expression of P53 and P16 and the clinical types or T stages.
  
  
  CONCLUSIONS
  The status of P53 and P16 in combination demonstrated by IHC technique in surgical margins of laryngeal carcinoma may predict the possibility of local recurrence.
authors.affiliation: Department of Otorhinolaryngology, Beijing Union Hospital, Chinese Academy of Medical Sciences, Beijing Union Medical College, Beijing 100730, China.
authors.forename: B
authors.initials: B
authors.lastname: Wei
authors.forename: P
authors.initials: P
authors.lastname: Tang
authors.forename: G
authors.initials: G
authors.lastname: Tu
mesh_terms: D000328:Adult; D000368:Aged; D019941:Cyclin-Dependent Kinase Inhibitor p16 / Q000032:analysis*; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D007822:Laryngeal Neoplasms / Q000737:chemistry* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000175:diagnosis*; D016159:Tumor Suppressor Protein p53 / Q000032:analysis*
chemical_list: D019941:Cyclin-Dependent Kinase Inhibitor p16; D016159:Tumor Suppressor Protein p53