Concurrent Chemotherapy and Intensity-Modulated Radiotherapy for Organ Preservation of Locoregionally Advanced Oral Cavity Cancer

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Abstract

Objectives:

To report outcomes of oral cavity cancer patients treated with concurrent chemotherapy and intensity-modulated radiotherapy (chemoIMRT).

Methods:

Between 2001 and 2004, 21 patients with oral cavity squamous cell carcinoma underwent definitive chemoIMRT. Sites included were oral tongue (n = 9), floor of mouth (n = 6), buccal mucosa (n = 3), retromolar trigone (n = 2), and hard palate (n = 1). Most had stage III-IV disease (n = 20). The most common regimen was 5 days infusional 5-fluorouracil (600 mg/m2/d × 5 days), hydroxyurea (500 mg, PO BID), and 1.5 Gy twice-daily irradiation to 72 to 75 Gy.

Results:

The median follow-up for surviving patients was 60 months. Treatment failure occurred as follows: local-1, regional-1, and distant metastases-2. The 2- and 5-year estimates of locoregional progression-free survival, disease-free survival, and overall survival were 90% and 90%, 71% and 71%, and 76% and 76%, respectively. Late complications included osteoradionecrosis (3 patients, 14%).

Conclusions:

Concurrent chemoIMRT results in promising locoregional control for oral cavity squamous cell carcinomas with acceptable toxicity.

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