title: Prognostic factors in pyriform sinus carcinoma.
abstract: In the 48-month survival analysis of 76 evaluable pyriform sinus carcinoma cases, nodal stage and size played the most significant prognosis-affecting roles. N3 stage and node greater than 3 cm decreased the survival fourfold and threefold, respectively, at statistically significant levels. The difference between the 35 per cent preoperative radiation therapy and 3 per cent radical radiation therapy cumulative 48-mouth survivals was significant at p less than 0.01. Complication rates were 6 per cent with radical radiation, 35 per cent with preoperative radiation and 43 per cent with curative surgery.
mesh_terms: D000328:Adult; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000401:mortality* / Q000532:radiotherapy / Q000601:surgery; D005260:Female; D006801:Humans; D007013:Hypopharynx; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D010610:Pharyngeal Neoplasms / Q000401:mortality* / Q000532:radiotherapy / Q000601:surgery; D011379:Prognosis; D011878:Radiotherapy / Q000009:adverse effects