title: Prognostic factors in maxillary sinus and nasal cavity carcinoma.
abstract: OBJECTIVE
  The aim of the present study is to define prognostic factors, particularly the impact of treatment on paranasal sinus and nasal cavity malignancies.
  
  
  METHODS
  Retrospective study of patients with maxillary antrum and nasal fossae malignancies. A maxillectomy classification as performed to treat malignancies in our institution is described. Multivariate analysis of prognostic factors was done using the Cox's model.
  
  
  RESULTS
  One hundred and nine patients were evaluated. Squamous cell carcinoma was found in 62 cases and in 95 patients the epicentre of the tumour was located in the maxillary antrum. Ten patients were treated with surgery only, 39 patients with surgery and adjuvant radiation therapy, 37 cases received only radiotherapy, and 18 received radiotherapy followed by surgery; in five cases a combination of chemo-radiotherapy was used. Multivariate analysis identified T classification, orbit invasion, N classification, site of origin of tumour in nasal fossae, and no surgical resection as independent prognostic factors (p=0.0001).
  
  
  CONCLUSIONS
  T4 tumours with orbit invasion present bad prognosis as compared to other T4 tumours. Surgical resection should be included in the treatment strategy. Because of the high frequency of lymph-node metastasis, neck treatment should be considered in T4 tumours.
authors.affiliation: Head and Neck Department, Subdirección de Cirugía, Instituto Nacional de Cancerología, Mexico City, Mexico. josecarr@prodigy.net.mx
authors.forename: J F
authors.initials: JF
authors.lastname: Carrillo
authors.forename: A
authors.initials: A
authors.lastname: Güemes
authors.forename: M C
authors.initials: MC
authors.lastname: Ramírez-Ortega
authors.forename: L F
authors.initials: LF
authors.lastname: Oñate-Ocaña
mesh_terms: D000230:Adenocarcinoma / Q000401:mortality / Q000473:pathology / Q000628:therapy*; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002294:Carcinoma, Squamous Cell / Q000401:mortality / Q000473:pathology / Q000628:therapy*; D003131:Combined Modality Therapy; D006801:Humans; D008437:Maxilla / Q000601:surgery; D008444:Maxillary Sinus Neoplasms / Q000401:mortality / Q000473:pathology / Q000628:therapy*; D008875:Middle Aged; D009296:Nasal Cavity; D009367:Neoplasm Staging; D009669:Nose Neoplasms / Q000401:mortality / Q000473:pathology / Q000628:therapy*; D013517:Otorhinolaryngologic Surgical Procedures; D011379:Prognosis; D011878:Radiotherapy; D012189:Retrospective Studies; D016019:Survival Analysis