Program including abstracts as pdf available here
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P 60<br />
Title<br />
RESuLTS OF THE POSTOPERATIVE RADIOTHERAPy FOR NECK NODE METASTASIS IN ORAL<br />
CANCER<br />
Authors<br />
M. KATAOKA 1 , T. TSuJIMOTO 1 , H. SHIMAMOTO 1 , A. NAKATANI 1 , y. uCHIyAMA 1 ,<br />
N. KAKIMOTO 1 , S. MuRAKAMI 1 , S. FuRuKAWA 1 , J. CHINDASOMbATJAROEN 2<br />
Affiliations<br />
1 Department of Oral and Maxillofacial Radiology, Osaka University, SUITA, JAPAN, 2 Department<br />
of Oral and Maxillofacial Radiology, Faculty of Dentistry, Mahidol University, Bangkok,<br />
THAILAND<br />
Body<br />
Objectives: To report the treatment results for neck node met<strong>as</strong>t<strong>as</strong>is of oral cancer treated with<br />
surgical operation and postoperative radiotherapy (RT) at Osaka University Dental Hospital.<br />
Methods: Between 1986 and 2009, 75 patients (73 squamous cell carcinom<strong>as</strong> and 2 adenoid<br />
cystic carcinom<strong>as</strong>) with neck node met<strong>as</strong>t<strong>as</strong>is were treated with surgery and postoperative RT.<br />
Indications of the postoperative RT included <strong>as</strong> follows: single positive neck node with extra<br />
capsular spread of dise<strong>as</strong>e (18 patients, 24.0%, SWE group), multiple positive neck nodes<br />
without extra capsular spread of dise<strong>as</strong>e (23 patients, 30.7%, MWOE group) and multiple<br />
positive neck nodes with extra capsular spread of dise<strong>as</strong>es (26 patients, 34.7%, MWE group).<br />
The postoperative RT for all patients w<strong>as</strong> performed only neck area and irradiation dose ranged<br />
from 38 to 75 Gy (median, 54 Gy). The postoperative RT without chemotherapy w<strong>as</strong> performed<br />
in 47 patients and with chemotherapy w<strong>as</strong> performed in 28 patients.<br />
Results: The 5-year overall survival rate (OSR) for all patients w<strong>as</strong> 79.1%. The 5-year OSRs were<br />
88.8% for patients of SWE group, 91.7% for patients of MWOE group, and 69.2% for patients<br />
of MWE group. The 5-year OSRs were 80.5% for patients without chemotherapy and 76.5% for<br />
patients with chemotherapy. The 5-year OSRs were 60.0% for patients received less than<br />
50 Gy of postoperative RT and 85.2% for patients received equal or more than 50 Gy of postoperative<br />
RT.<br />
Conclusion: The postoperative RT seemed to be indispensable in some c<strong>as</strong>es after surgery for<br />
the neck node met<strong>as</strong>t<strong>as</strong>is in oral cancer patients.<br />
Keywords<br />
Radiotherapy,Survival rate,Neck node met<strong>as</strong>t<strong>as</strong>is<br />
POSTerS<br />
175
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