Avaliação clinica e histopatologica de tumores da glandula parotida / Clinical and histopathological analysis of parotid gland tumors

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

Salivary gland tumors are rare, with an annual incidence of about 0,4 to 13,5 cases per 100000 people. Most of the cases affect the parotid gland, representing 64% to 80% of the cases and the majority is benign. The aim of this study was to analyze the main clinical and histopathological features of parotid gland tumors. We select all the patients with primary parotid tumors referred to the Department of Head and Neck Surgery and Otorhinolaryngology from A. C. Camargo Hospital from 1953 to 2003. The patients previously treated at another institution or with incomplete histological or clinical information were excluded. A total of 600 cases were selected, being 369 benign and 231 malignant. Pleomorphic adenoma was the most frequent benign tumor, corresponding to 66,5% of the cases followed by Warthin tumor with 25%. From the malignant tumors, the most common was the mucoepidermoid carcinoma. Nineteen cases (3,16%) were nonlymphoid mesenchymal tumors, being 15 benign and 4 malignant. The main treatment modality for the parotid tumors was the partial, total or extended parotidectomy. In some malignant cases, adjuvant therapies, mainly radiotherapy, were applied. The incidence of local, regional and distant recurrences were 10%, 8% e 9%, respectively. The multivariate analysis indicated clinical skin invasion, facial nerve dysfunction and perineural growth as the most significant recurrent disease-related prognostic factors for patients with parotid carcinoma. Testing two prognostic scores previously published by Vander Poorten et al. (1999) and Carrillo et al. (2007), the group with worse prognosis can be well characterized using both scores, but the best prognostic score was the presented by Carrillo

ASSUNTO(S)

mouth neoplasma salivary glands glandulas salivares neoplasias bucais

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