title: [Prognostic factors and survival rates in oral cavity cancers].
abstract: OBJECTIVE
  We evaluated the treatment results and prognostic factors that might affect local control and survival in patients receiving radiotherapy for oral cavity cancers.
  
  
  METHODS
  The study included 32 patients (16 men, 16 women; mean age 62 years; range 26 to 90 years) who received radiotherapy for oral cavity cancers. All the patients had squamous cell carcinoma, which involved the tongue in 15 patients (46.9%) and the lower lip in 13 patients (40.6%). Most of the patients (n=21, 65.7%) had T1 or T2 tumors. Neck lymph nodes were positive in 11 patients (34.4%). Fifteen patients had early stage (stage I, II), 17 patients had advanced stage (stage III, IV) tumors. Sixteen patients received primary radiotherapy and 16 patients received postoperative adjuvant radiotherapy, with doses ranging from 5000 cGy to 7000 cGy. The mean follow-up period was 68 months (range 5 to 147 months).
  
  
  RESULTS
  Two-year and five-year survival rates were 53% and 39%, respectively. Age, sex, tumor differentiation, and the total radiotherapy dose were not found to affect survival (p>0.05), whereas tumor size, positive lymph nodes, stage, and treatment modality were found as significant prognostic factors (p=0.01).
  
  
  CONCLUSIONS
  Our data show that tumor size, lymph node involvement, stage, and postoperative adjuvant radiotherapy are significant parameters that affect survival in oral cavity cancers.
authors.affiliation: Department of Radiation Oncology, Ankara Numune Training and Research Hospital, Ankara, Turkey.
authors.forename: Gamze
authors.initials: G
authors.lastname: Uğurluer
authors.forename: Sercan C
authors.initials: SC
authors.lastname: Ozyurt
authors.forename: Ferdi
authors.initials: F
authors.lastname: Aksaray
authors.forename: Nalan
authors.initials: N
authors.lastname: Aslan
authors.forename: Rahşan
authors.initials: R
authors.lastname: Habiboğlu
authors.forename: Mübeccel
authors.initials: M
authors.lastname: Tümöz
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002294:Carcinoma, Squamous Cell / Q000401:mortality* / Q000473:pathology / Q000532:radiotherapy* / Q000601:surgery; D003131:Combined Modality Therapy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000401:mortality* / Q000473:pathology / Q000532:radiotherapy* / Q000601:surgery; D009367:Neoplasm Staging; D011379:Prognosis; D011829:Radiation Dosage; D018714:Radiotherapy, Adjuvant; D016019:Survival Analysis; D016896:Treatment Outcome; D014421:Turkey / Q000453:epidemiology