TY - JOUR
T1 - Malignant parotid tumors
T2 - Presentation, clinical/pathologic prognostic factors, and treatment outcomes
AU - Pohar, Surjeet
AU - Gay, Hiram
AU - Rosenbaum, Paula
AU - Klish, Darren
AU - Bogart, Jeffrey
AU - Sagerman, Robert
AU - Hsu, Jack
AU - Kellman, Robert
PY - 2005/1
Y1 - 2005/1
N2 - Purpose To determine the important clinical/pathologic prognostic factors and optimal treatment of malignant parotid tumors. Methods and materials This study was a retrospective chart review of 163 patients treated for malignant parotid tumors at two institutions. Of the 163 patients, 91 were treated with surgical resection and radiotherapy (RT), 56 were treated with surgery alone, and 13 were treated with RT alone. The median follow-up was 5.1 years (range, 0-37 years). Results Locoregional recurrence occurred in 37% of surgery-only, 11% of surgery plus RT, and 15% of RT-only patients (p = 0.001, Pearson's chi-square test). Cox proportional hazard multivariate analysis revealed that increasing age and higher stage were each statistically significantly (p < 0.05) associated with a poorer overall 5-year survival and cause-specific survival. Only increasing age and the absence of adjuvant RT were shown in Cox proportional hazard multivariate analysis to impact negatively on local failure-free survival. Conclusion In Cox proportional hazards multivariate analysis, only increasing age and stage were statistically significant prognostic factors for survival. The addition of RT to surgery did not improve overall survival but did reduce locoregional recurrence and improve local failure-free survival.
AB - Purpose To determine the important clinical/pathologic prognostic factors and optimal treatment of malignant parotid tumors. Methods and materials This study was a retrospective chart review of 163 patients treated for malignant parotid tumors at two institutions. Of the 163 patients, 91 were treated with surgical resection and radiotherapy (RT), 56 were treated with surgery alone, and 13 were treated with RT alone. The median follow-up was 5.1 years (range, 0-37 years). Results Locoregional recurrence occurred in 37% of surgery-only, 11% of surgery plus RT, and 15% of RT-only patients (p = 0.001, Pearson's chi-square test). Cox proportional hazard multivariate analysis revealed that increasing age and higher stage were each statistically significantly (p < 0.05) associated with a poorer overall 5-year survival and cause-specific survival. Only increasing age and the absence of adjuvant RT were shown in Cox proportional hazard multivariate analysis to impact negatively on local failure-free survival. Conclusion In Cox proportional hazards multivariate analysis, only increasing age and stage were statistically significant prognostic factors for survival. The addition of RT to surgery did not improve overall survival but did reduce locoregional recurrence and improve local failure-free survival.
KW - Malignant parotid tumors
KW - Prognostic factors
UR - http://www.scopus.com/inward/record.url?scp=11144343286&partnerID=8YFLogxK
U2 - 10.1016/j.ijrobp.2004.04.052
DO - 10.1016/j.ijrobp.2004.04.052
M3 - Article
C2 - 15629601
AN - SCOPUS:11144343286
SN - 0360-3016
VL - 61
SP - 112
EP - 118
JO - International Journal of Radiation Oncology Biology Physics
JF - International Journal of Radiation Oncology Biology Physics
IS - 1
ER -