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      Osteolipoma: An Extremely Rare Hard Palate Tumor

      case-report
      Author(s): 1 , , 2
      Editor(s): ,
      Publication date (Electronic, pub):
      Publication date (Electronic, collection):
      Journal: Cureus
      Publisher: Cureus
      Keywords: lipoma, osseous, oral cavity, hard palate

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          Abstract

          Lipoma and its variants rarely involve the oral cavity. Osteolipoma of the hard palate is extremely uncommon with only a few cases reported worldwide. It is important to recognize and give comprehensive diagnosis of this entity, so as to prevent unwarranted medical interventions. Here, in this report, we describe a rare case of osteolipoma arising in the hard palate of a 35-year-old male and the diagnostic conundrum associated with it. The approach to such a case, differential diagnosis, and review of the literature are also presented. 

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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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            Lipomas of the oral cavity: clinical and histopathologic study of 41 cases in a Brazilian population.

            Luiz Eduardo Rodrigues Juliasse, CASSIANO NONAKA, Leão Pinto … (2010)
            This study evaluated the clinical and histopathologic aspects of 41 cases of oral lipomas diagnosed in a Brazilian population. All records from patients diagnosed with oral lipoma between 1970 and 2008 were reviewed. Histological sections were evaluated by light microscopy. There was a predominance of females (2.4:1), with a peak incidence between the sixth and seventh decade. The buccal mucosa was the most affected site (53.7%), followed by the buccal sulcus (14.6%) and tongue (9.8%). Tumor size ranged from 0.5 to 10 cm and the mean reported duration was 48 months. Histologically, the following variants were identified: lipoma (41.5%), fibrolipoma (34.1%), spindle cell lipoma (9.8%), sialolipoma (9.8%), osteolipoma (2.4%), and chondrolipoma (2.4%). Most tumors were well delimited, irrespective of the variant. Lipomas are rare tumors of the oral cavity. The characterization of new variants, such as sialolipomas, and the identification of histological subtypes in already known variants, such as low-fat and fat-free spindle cell lipomas, highlight the importance for careful microscopic evaluation of these tumors, which might be combined with immunohistochemistry in some cases.
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              Osteolipoma of the palate: report of a case and review of the literature.

              K E Adebiyi, V I Ugboko, S Maaji … (2024)
              Oral lipomas, though rare, predominantly affect the buccal mucosa, tongue, and lips. The occurrence of lipomas in the palate is extremely rare. Osteolipoma is a very rare histological variant of lipoma accounting for less than 1% of all cases. Although a few cases involving the soft palate have been reported, there is only one reported case of osteolipoma of the hard palate in the English-language literature and it was a congenital osteolipoma associated with a cleft palate in a 6-year-old male child. This paper aims to describe an additional case uniquely located in the hard palate of an adult female.
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                Author and article information

                Journal
                Journal ID (nlm-ta): Cureus
                Journal ID (iso-abbrev): Cureus
                Journal ID (issn): 2168-8184
                Title: Cureus
                Publisher: Cureus (Palo Alto (CA) )
                ISSN (Electronic): 2168-8184
                Publication date (Electronic, pub): 15 May 2020
                Publication date (Electronic, collection): May 2020
                Volume: 12
                Issue: 5
                Electronic Location Identifier: e8146
                Affiliations
                [1 ] Pathology, Kalpana Chawla Government Medical College, Karnal, IND
                [2 ] Otorhinolaryngology, Kalpana Chawla Government Medical College, Karnal, IND
                Author notes
                Article
                DOI: 10.7759/cureus.8146
                PMC ID: 7294868
                PubMed ID: 32550065
                SO-VID: 3e1404b0-596d-4efa-b30d-bd491e1088f4
                Copyright © Copyright © 2020, Sharma et al.
                License:

                This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

                History
                Date received : 24 April 2020
                Date accepted : 14 May 2020
                Categories
                Subject: Otolaryngology
                Subject: Pathology
                Subject: Oncology

                Keywords: lipoma,osseous,oral cavity,hard palate
                Data availability:
                Keywords: lipoma, osseous, oral cavity, hard palate

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