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Minor salivary gland carcinomas of oral cavity and oropharynx
Published online by Cambridge University Press: 22 May 2009
Abstract
This paper reviews 22 cases of minor salivary gland carcinoma of the oral cavity or oropharynx which were treated at Kurume University Hospital between 1976 and 2005. Minor salivary gland carcinoma was observed in eight of 362 patients with cancer of the oral cavity (2 per cent), and in 14 of 275 patients with cancer of the oropharynx (5 per cent). The five-year and 10-year survival rates of patients with oropharyngeal minor salivary gland carcinoma were 90 per cent. No statistically significant difference was observed between survival rates for oropharyngeal minor salivary gland carcinoma and for oropharyngeal squamous cell carcinoma (p = 0.06). The five- and 10-year survival rates of patients with oral cavity minor salivary gland carcinoma were 75 and 37 per cent, respectively. No statistically significant difference was observed between survival rates for oral cavity minor salivary gland carcinoma and oral cavity squamous cell carcinoma.
Patients' survival results correlated well with the clinical stage of their lesions. A significant difference in survival was observed, comparing stage IV with stages I, II and III (p = 0.04). In contrast, no significant relationship was found between either survival and tumour type or survival and treatment. Adjuvant therapy is recommended for patients with grade III adenoid cystic carcinoma with perineural infiltration or intravascular infiltration.
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