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Revista argentina de cirugía

versão impressa ISSN 2250-639Xversão On-line ISSN 2250-639X

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CORTES, Alejandra et al. Retromolar trigone: A dreadful subsite of oral cancer. Rev. argent. cir. [online]. 2015, vol.107, n.1, pp.1-10. ISSN 2250-639X.

Background: the retromolar trigone is an area of the oral mouth located behind the superior and inferior dental archs. Results of its treatment and overall survival has been sporadically published in retrospective series. Objective: to discover factors which afect survival and free of disease interval in a series of patents under a preset protocol. Methods: retrospective study, review of medical records and pathologic reports. Results: The type of surgery in 90 patents included was: simple resecton, 11; combined with marginal resecton of mandible, 23; segmentary resecton, 40 (7 of them reconstructed with fbula); and partal maxillectomy, 21. A supraomohyoid neck dissecton was addedin 11/90 (12.2%) and a complete neck dissecton of fve levels, in 79/90 (97.8%). In 80.5% of the cases (83/103) received postoperative radiotherapy. In only 12.6% of the patents (13/103), preservaton treatment with sequental chemo/radiotherapy was applied. Morbidity was 81.1 % and mortality 5.5%. Sixty four per cent of patents relapsed, with a 5 years average of 58.3%. In the multivariate analysis for recurrence, only margin resecton was statstically significant. Five years overall survival was 46.7% and free of disease 39.1%. In multivariate analysis for survival, perineural invasion, margin resecton and node metastases were statstically significant. Conclusions: The high number of patents not suitable por curative surgery usually afected by bone infltraton, perineural invasion or extension to the neck suggests that the retromolar trigone is a dreadful subsite for oral cancer.

Palavras-chave : trígono retromolar, cáncer de boca, cirugía reconstructiva de cabeza y cuello.

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