Parotid Gland Carcinoma: Analysis of Prognostic Factors

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Abstract

The histologic variety of parotid gland carcinomas, their different natural history, and the peculiar anatomy of the parotid region can make prognosis and therapeutic strategy quite controversial. The present study was designed to evaluate those prognostic factors able to affect the long-term results in a group of 167 consecutively treated parotid epithelial malignancies. The continuous or discrete covariants considered as potential prognostic factors are age, sex, histotype, grading, TNM and pTNM classification, facial nerve involvement, type of surgery on the tumor site and on nodes, facial nerve resection, and postoperative radiotherapy. All the material has been statistically analyzed and the results have been compared with the principal data published. According to the analysis, the most relevant prognostic factors in parotid gland carcinomas appear to be pTN staging, tumor grading, facial nerve involvement, and local extension. These factors could reliably predict the patient's chance for survival, and thus influence the therapeutic strategy.

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