Background Salivary gland tumors (SGT) correspond to a heterogeneous group of lesions with variable biological behavior. The present study aimed to determine the distribution and demographic findings of salivary gland neoplasms in a northeast Brazilian population. Material and Methods A retrospective descriptive cross-sectional study was performed. A total of 588 cases of SGT were diagnosed between 2006 and 2016 of 4 pathology services in the state of Sergipe, Brazil. All cases were reviewed, and data such as sex, age, anatomical location, and histopathological diagnosis were collected. Results A total of 470 (79.9%) tumors were benign and 118 (20.1%) were malignant. The majority of the patients were females (n=328, 55.8%) with an overall female:male ratio of 1.2:1. The major salivary glands were affected more than the minor glands (69.5% vs. 30.5%). Pleomorphic adenoma (n=419, 71.3%) and mucoepidermoid carcinoma (n=29, 4.9%) were the most frequent benign and malignant tumors, respectively. In addition, both benign and malignant tumors occurred more frequently in the parotid gland (n=300, 51%, p <0.05). Conclusions The epidemiologic profile and clinical characteristics of SGT were similar to those described in other countries and other regions of Brazil. Epidemiological studies of SGT help to understand their clinical and pathological features and are essential to establish the proper management and prognosis. Key words: Salivary gland, tumors, epidemiology, head and neck pathology.

Background Sialolipoma is a rare histological variant of lipoma commonly misdiagnosed and composed of a proliferation of mature adipocytes with secondary entrapment of normal salivary gland tissue. The purpose of the present study is to report the clinicopathologic and immunohistochemical features of 10 new cases of sialolipomas in conjunction with a review of the literature. Methods A retrospective descriptive cross‐sectional study was performed. A total of 54,190 biopsy records of oral and maxillofacial lesions from four oral and maxillofacial pathology services in Brazil were analysed. All cases of lipomas were reviewed, and clinical, demographic and histopathological data were collected of all cases compatible with sialolipomas. In addition, immunohistochemistry stains (AE1/AE3, CK7, 34βE12, S‐100, HHF35, α‐SMA and Ki‐67) and a literature review based on a search of three electronic databases (PubMed, Web of Science and Scopus) were performed. Results Among all lipomas reviewed, there were 10 cases of sialolipomas. The series comprised of 7 females (70.0%) and 3 males (30.0%), with a mean age of 46.1 ± 21.5 years (range: 11‐71 years) and a 2.3:1 female‐to‐male ratio. The lower lip (n = 3, 30.0%) and tongue (n = 2, 20.0%) were the most common locations, presenting clinically as a nodule of slow growth and normal colour. Conservative surgical excision was the treatment in all cases. No recurrence was observed. Conclusion Sialolipomas are a rare histological variant of lipoma, affecting the salivary glands, mainly in the parotid gland and palate of female adults. Pathologists must recognise sialolipomas to avoid misdiagnoses with other lipomatous tumours that can affect salivary glands.

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Botryoid odontogenic cyst (BOC) is a rare variant of the lateral periodontal cyst (LPC).As the biological behavior of BOC is variable and the literature is limited to that of individual case reports, there is no accepted consensus on the best management strategy. A 43-year-old Caucasian male was referred to a private dental clinic for routine radiographic examination. Extraoral and intraoral evaluations revealed no alterations. Panoramic radiography, periapical radiography, and cone beam computed tomography revealed a well-circumscribed osteolytic lesion of 2.0 cm in diameter, extending from the region of teeth 33 to 35. The provisional diagnostic was odontogenic keratocyst or lateral periodontal cyst. Histological analysis of the incisional biopsy revealed multiple cystic cavities lined by a thin nonkeratinized epithelium, exhibiting focal plaque-like thickenings, surrounded by a dense fibrous capsule. The diagnosis was BOC. The purpose of this study was to critically analyze the clinical and radiologic features of BOC based on case reports and case series published in the literature from 1973 to 2018 and to add a new one from our files.

ObjectiveTo report a rare case of intraoral extensive blue nevus in an elder patient.BackgroundOral blue nevi is a well‐recognised skin melanocytic neoplasm that rarely occurs in the oral cavity and may mimic melanoma in the early stages.MethodsAn incisional biopsy was performed, and the diagnosis was blue nevus.ConclusionBoth the clinician and pathologist must be aware of such a presentation to diagnose and treat appropriately.