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      Intraoral Lipoma: Report of 3 Cases

      case-report

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          Abstract

          Lipoma, a benign tumor of adipose tissue is one of the most common benign neoplasms of the body. However, its occurrence in oral cavity is very rare. It accounts for 1 to 4% of benign neoplasms of mouth affecting predominantly the buccal mucosa, floor of mouth and tongue. We report three cases of intraoral lipoma, two in buccal mucosa and one in labial mucosa. An excisional biopsy was performed and histopathological examination revealed proliferation of mature adipocytes arranged in lobules and separated by fibrous septa. After 3 years follow up, the patients showed no signs of recurrence.

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          Lipomas of the oral cavity: clinical findings, histological classification and proliferative activity of 46 cases.

          R Falzoni, Simone F. Pires, E Fregnani … (2003)
          Lipomas represent about 1 to 5% of all neoplasms of the oral cavity. Although relatively common, few large series of intraoral lipomas and its variants are seen in the literature. Therefore, the authors present the clinical, histological and immunohistochemical features of 46 cases of intraoral lipomas reviewed from the files of the University of Campinas Dental School from 1970 to 2001. Most of the cases affected adults, without gender predilection, and the main involved sites were the buccal mucosa (21 cases), tongue (six cases), lips (six cases) and floor of mouth (five cases). The histological analysis revealed 21 cases of lipoma, 18 fibrolipomas, four intramuscular lipomas, two minor salivary gland lipomas and one spindle cell lipoma. PCNA and ki-67 expression indexes were higher in spindle cell lipoma, intramuscular lipomas and fibrolipomas compared to common lipomas, but the differences were not statistically significant. All lesions were removed surgically and none showed recurrence, regardless of the various proliferative activities.
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            Lipoma of the oral and maxillofacial region: Site and subclassification of 125 cases.

            Gordon C. S. Smith, Mary Furlong, Esther Childers (2004)
            Lipomas and lipoma variants are common soft tissue tumors, but occur infrequently in the oral and maxillofacial region. In this study, we reviewed 125 lipomas in specific oral and maxillofacial locations. We wanted to examine and compare the clinicopathologic features of these tumors. Study design The records from the Oral and Maxillofacial Pathology Registry of the Armed Forces Institute of Pathology from 1970 to the present were searched for cases coded as "lipoma." This study included 125 cases based on location within the oral and maxillofacial region, benign histology, and available clinical information. Subcutaneous and intraosseous lipomas were excluded. The tumors were classified according to the most recent World Heath Organization classification for soft tissue tumors. Of 125 lipomas, 91 tumors occurred in males, 33 in female patients, and 1 of unknown gender. The mean age was 51.9 years, range 9-92 years. Four tumors occurred in pediatric patients (age <18 years). Specific anatomic sites within the oral and maxillofacial region included the parotid region (n=30); buccal mucosa (n=29); lip (n=21); submandibular region (n=17); tongue (n=15); palate (n=6); floor of mouth (n=5); and vestibule (n=2). The mean size of tumors was 2.2 centimeters, range 0.5 to 8.0 centimeters. The mean duration of the tumors prior to excision was 3.2 years, range 6 weeks to 15 years. Most patients presented with an asymptomatic, circumscribed mass. Grossly, most tumors were described as pink and smooth, occasionally mucoid. Histologically, the tumors were subclassified as classic lipomas (n=62); spindle cell/pleomorphic lipomas (n=59); fibrolipoma (n=2), and chondroid lipoma (n=2). Fourteen tumors exhibited secondary changes, such as fat necrosis, atrophy, and prominent hyalinization; 23 tumors were histologically confirmed to be intramuscular. Lipomas of the oral and maxillofacial region occur most commonly in adult males in the parotid region, followed closely by the buccal mucosa. These tumors are uncommon in children. Interestingly, spindle cell lipomas are common in this region and comprise the majority of our parotid and lip tumors. Angiolipomas were absent in this anatomic region in this study. Secondary changes and atrophy should not be confused with the malignant histologic features of a liposarcoma.
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              Diagnostic Surgical Pathology of the Head and Neck

              DR Gnepp (2001)
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                Author and article information

                Journal
                Journal ID (nlm-ta): Dent Res J (Isfahan)
                Journal ID (publisher-id): DRJ
                Title: Dental Research Journal
                Publisher: Medknow Publications Pvt Ltd (India )
                ISSN (Print): 1735-3327
                ISSN (Electronic): 2008-0255
                Publication date (Print): Winter 2011
                Volume: 8
                Issue: 1
                Pages: 48-51
                Affiliations
                [1 ]Assistant Professor, Department of Oral and Maxillofacial Pathology, DAV(c) Dental College & Hospital, Yamunanagar, Harayana, India.
                [2 ]Assistant Professor, Department of Prosthodontics, Genesis Institute of Dental Sciences & Research, Dental College & Hospital, Ferozepur, Punjab, India.
                Author notes
                Correspondence to: RamanPreet Kaur, Email: ramanpreetgrewal@ 123456rediffmail.com
                Article
                Publisher ID: DRJ-8-48
                PMC ID: 3177381
                PubMed ID: 22132015
                SO-VID: cf8ba4b6-d537-4b94-a556-e54ce3b6add4
                Copyright © Copyright: © Dental Research Journal
                License:

                This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                Date received : March 2010
                Date accepted : September 2010
                Categories
                Subject: Case Report

                ScienceOpen disciplines: Dentistry
                Keywords: lipoma,surgery,adipocytes,oral
                Data availability:
                ScienceOpen disciplines: Dentistry
                Keywords: lipoma, surgery, adipocytes, oral

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