Salivary Gland Tumors: A Retrospective Study of 164 Cases from a Single Private Practice Service in Mexico and Literatur
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ORIGINAL PAPER
Salivary Gland Tumors: A Retrospective Study of 164 Cases from a Single Private Practice Service in Mexico and Literature Review John Lennon Silva Cunha1 · Juan Carlos Hernandez‑Guerrero2 · Oslei Paes de Almeida1 · Ciro Dantas Soares1 · Adalberto Mosqueda‑Taylor3 Received: 23 July 2020 / Accepted: 1 October 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Salivary gland tumors (SGT) represent an uncommon heterogeneous group of tumors with complex clinical and pathological characteristics. The prevalence of these lesions varies between studies but has been estimated between 3 and 6% of all tumors in the head and neck region. The present study aimed to evaluate the distribution and demographic findings of salivary gland tumors diagnosed in an oral pathology service in Mexico. A retrospective descriptive cross-sectional study was performed. A total of 164 cases of SGT from a private oral pathology service were diagnosed between 2000 and 2019 in Mexico City. All cases were reviewed histologically, and demographic data and histopathological diagnoses were collected. A total of 110 (67.1%) tumors were benign, and 54 (32.9%) were malignant. The majority of patients were female (n = 100, 61.0%) with an overall female:male ratio of 1.6:1. The minor salivary glands were affected more than the major salivary glands (68.9% vs. 25.6%). The palate (n = 67, 40.9%) was the most commonly affected site, followed by the parotid gland (n = 37, 22.6%), lips (n = 16, 9.8%), and buccal mucosa (n = 14, 8.5%). Pleomorphic adenoma (n = 88; 80.0%) and mucoepidermoid carcinoma (n = 16, 29.6%) were the most frequent benign and malignant tumors, respectively. The general features of SGT from the studied Mexican population shared some similarities and differences compared to previously reported series from various parts of the world. Keywords Salivary gland · Tumors · Epidemiology · Head and neck pathology
Introduction The salivary glands are exocrine glands that produce secretions contributing to the lubrication, digestion, and protection of the upper aerodigestive tract [1]. They can be divided into major (parotid, submandibular, sublingual) and minor salivary glands [2]. Due to its complex histology, a variety of primary tumors can develop in these structures * Ciro Dantas Soares [email protected] 1
Oral Pathology Section, Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira 901, P.O. Box. 52, Piracicaba, São Paulo 1314‑903, Brazil
2
Facultad de Odontología, Laboratory of Immunology, Universidad Nacional Autónoma de México (UNAM), México City, México
3
Facultad de Odontología, Universidad Autónoma Metropolitana Xochimilco (UAM), México City, México
independently of the anatomical site [1, 2]. Also, the morphological diagnosis of these lesions is frequently challenging due to many histological subtypes, overlapping of morphological findings, and different classifications [2–4]. Although several epidemiological studies across
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