title: Tumor sterilization following high-dose pre-operative irradiation for advanced cancer of the larynx or pyriform sinus.
abstract: Twenty-two patients with advanced laryngeal cancer and 5 with advanced pyriform sinus cancer were given 51 Gy (5,100 rad) followed by surgical resection. In 10 (45%) of patients with laryngeal cancer, no tumor was found at the primary site pathologically; 15 (68%) had negative neck specimens. All of those with pyriform sinus cancer had positive specimens. Eighteen patients with laryngeal cancer are free of disease. In contrast, only 1 with pyriform sinus cancer is free of disease; 1 has had a local recurrence and 3 have had metastases. The data suggest that 51 Gy (5,100 rad) are insufficient to sterilize pyriform sinus cancer; higher doses together with adjuvant chemotherapy are needed.
mesh_terms: D000328:Adult; D000368:Aged; D003037:Cobalt Radioisotopes / Q000627:therapeutic use; D005260:Female; D006801:Humans; D007822:Laryngeal Neoplasms / Q000532:radiotherapy* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D010610:Pharyngeal Neoplasms / Q000532:radiotherapy* / Q000601:surgery; D011867:Radioisotope Teletherapy; D011879:Radiotherapy Dosage
chemical_list: D003037:Cobalt Radioisotopes