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      Perfil epidemiológico de neoplasias epiteliales de glándulas salivales Translated title: Epithelial tumors of salivary glands. Review of 286 pathology reports

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          Background:: Epithelial tumors of the salivary glands, including benign tumors and aggressive malignancies with different prognoses, are uncommon. Aim: To describe the frequency and distribution of salivary gland tumors according to age, gender and anatomical location. Material and Methods: Review of pathological reports of salivary gland tumors of a Pathology laboratory at a clinical hospital from 2006 to 2016. Results: Five hundred ninety salivary gland biopsies were reviewed. Of these, 286 (49%) were primary epithelial tumors of the salivary glands. Two hundred thirty (80%) were benign and 56 (20%) were malignant tumors. Regarding location, 274 (96%) were in the major salivary glands, and 12 (4%) in the minor salivary glands. The most common histological types were pleomorphic adenoma for benign tumors in 172 cases, followed by papillary cystadenoma lymphomatosum in 33 cases. Mucoepidermoid carcinoma was the most common malignant tumor in 14 cases. Conclusions: These results are similar to reports from abroad, however more studies are necessary to be able to establish a more representative and updated analysis.

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          Salivary gland neoplasms in oral and maxillofacial regions: a 23-year retrospective study of 6982 cases in an eastern Chinese population.

          There is little information in the English-language literature about the epidemiology of salivary gland neoplasms in the eastern Chinese population. A large retrospective study (6982 primary salivary tumors during 23 years) was carried out to investigate the clinicopathological features (tumor location, patient sex and age) of these tumors in this population. 3593 tumors were in males and 3389 in females. Pleomorphic adenoma (69%) was the most common tumor and 20% were located in minor glands. 92% of Warthin's tumors occurred in males. Malignant tumors were predominantly adenoid cystic carcinoma (30%) and mucoepidermoid carcinoma (30%). Incidences of lymphoepithelial carcinomas (5%) and polymorphous low-grade adenocarcinoma (1%) of malignant tumors were identified. 28% of tumors originated from minor glands. Most findings were similar to those in the literature, with some variations. The salivary tumors slightly predominated in males. Relatively higher incidences of minor gland tumors and specifically of pleomorphic adenoma in minor glands were noted. Adenoid cystic carcinoma and mucoepidermoid carcinoma constituted the most common malignancies. There was a high incidence of lymphoepithelial carcinomas but a low incidence of polymorphous low-grade adenocarcinoma. The historical significant male predominance of Warthin's tumor was confirmed.
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            Salivary gland tumors in a Brazilian population: a retrospective study of 496 cases.

            Salivary gland tumors are uncommon and the microscopical features can be complex. Epidemiological data of these tumors in the various parts of the world can be helpful for a better understanding of its biology and clinical characteristics. In this study, 496 epithelial and mesenchymal tumors of major and minor salivary glands diagnosed at Londrina Cancer Institute during the period from 1972 to 2001 were reviewed. Out of all cases, 335 (67.5%) were classified as benign and 161 (32.5%) as malignant. The majority of the cases occurred in the parotid gland (67.7%), followed by the minor salivary glands (22.8%) and submandibular gland (9.5%). Among the minor salivary gland tumors, the palate was the most frequent location (67%). The tumors affected more commonly adult patients with peak incidence between 40 and 50 years of age and with a slightly predominance in females. Pleomorphic adenoma was the most frequent tumor representing 54.2% of all cases, followed by mucoepidermoid carcinoma (13.5%), Warthin's tumor (8.5%) and adenoid cystic carcinoma (7.9%).
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              The range and demographics of salivary gland tumours diagnosed in a UK population.

              Salivary gland tumours are relatively rare and comprise a diverse range of neoplasms. The aim of this study was to determine the range and demographics of all histologically diagnosed salivary tumours in a European population. All entries for salivary gland tumours from 1974 to 2005 inclusive were retrieved and analysed for each diagnosis including number of specimens, male:female ratio and age range. These data were then analysed for the distribution of benign and malignant salivary tumours in major and minor salivary glands. 58,880 specimens were received; of these, 741 cases (1.3% of all specimens) were diagnosed as salivary gland tumours with a male to female ratio of 0.7:1. There were 481 (64.9%) benign and 260 (35.1%) malignant neoplasms, with the most common tumours being pleomorphic adenoma and mucoepidermoid carcinoma, respectively. Our study provides demographic data on a large series of salivary gland tumours in a European population. Accurate diagnosis is essential as salivary lesions have diverse clinical and prognostic outcomes. This study has confirmed that some tumours have a predilection for certain sites and that the risk of malignant disease is also greater at specific sites within the oral cavity.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rmc
                Revista médica de Chile
                Rev. méd. Chile
                Sociedad Médica de Santiago (Santiago, , Chile )
                0034-9887
                December 2018
                : 146
                : 10
                : 1159-1166
                Affiliations
                [1] Santiago Santiago de Chile orgnamePontificia Universidad Católica de Chile orgdiv1Departamento de Cirugía Oncológica y Maxilofacial orgdiv2División de Cirugía Chile
                [2] Santiago Santiago de Chile orgnamePontificia Universidad Católica de Chile orgdiv1Facultad de Medicina orgdiv2Departamento de Anatomía Patológica Chile
                Article
                S0034-98872018001001159
                aafb2f7a-b75e-48ee-b439-c771abc03d1d

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 04 April 2018
                : 04 October 2018
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 15, Pages: 8
                Product

                SciELO Chile

                Categories
                ARTICULOS DE INVESTIGACION

                Neoplasms,Pathology,Salivary Glands,Surgery, Oral
                Neoplasms, Pathology, Salivary Glands, Surgery, Oral

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