Ed item: 16161069 format summary summary (text) abstract abstract (text) medline xml pmid list mesh and other data e-mail subject additional text e-mail "spam" filtering software notice add to clipboard add to collections order articles add to my bibliography generate a file for use with external citation management software. viagra reviews online Create file sorry, your browser is unsupported so ncbi web applications may not function properly. buy generic viagra online More information. Head neck. viagra generic 2005 oct;27(10):843-50. viagra mg 100 Defining risk levels in locally advanced head and neck cancers: a comparative analysis of concurrent postoperative radiation plus chemotherapy trials of the eortc (#22931) and rtog (# 9501). Bernier j, cooper js, pajak tf, van glabbeke m, bourhis j, forastiere a, ozsahin em, jacobs jr, jassem j, ang kk, lefã¨bvre jl. Source department of radiation oncology, oncology institute of southern switzerland, ch-6504 bellinzona, switzerland. Jacques. Bernier@hcuge. viagra reviews online Ch abstract background: in 2004, level i evidence was established for the postoperative adjuvant treatment of patients with selected high-risk locally advanced head and neck cancers, with the publication of the results of two trials conducted in europe (european organization research and treatment of cancer; eortc) and the united states (radiation therapy oncology group; rtog). buy viagra without prescription Adjuvant chemotherapy-enhanced radiation therapy (cert) was shown to be more efficacious than postoperative radiotherapy for these tumors in terms of locoregional control and disease-free survival. However, additional studies were needed to identify precisely which patients were most suitable for such intense treatment. recreational viagra dose Methods: both studies compared the addition of concomitant relatively high doses of cisplatin (on days 1, 22, and 43) to radiotherapy vs radiotherapy alone given after surgery in patients with high-risk cancers of the oral cavity, oropharynx, larynx, or hypopharynx. A comparative analysis of the selection criteria, clinical and pathologic risk factors, and treatment outcomes was carried out using data pooled from these two trials. Results: extracapsular extension (ece) and/or microscopically involved surgical margins were the only risk factors for which the impact of cert was significant in both trials. generic viagra canada There was also a trend in favor of cert in the group of patient. generic viagra without prescription ordering viagra from canada