Primary intra-osseous Hybrid Schwannoma-Perineurioma in the mandible

Primary intra-osseous Hybrid Schwannoma-Perineurioma in the mandible

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Primary intra-osseous Hybrid Schwannoma-Perineurioma in the mandible

Show simple item record Bergamini, Mariana-Lobo es Noberto, Luanna-Priscilla-Montenegro es Torres, Gabriel-Barroso-Marocco-de Abreu es Soares, Haroldo Arid es Martins, Fabiana es Costa, André Luiz Ferreira es de Souza, Suzana-Orsini-Cantanhede-Machado es Braz Silva, Paulo Henrique es 2021-04-19T10:10:15Z 2021-04-19T10:10:15Z 2020 es
dc.description.abstract Benign nerve sheath tumours include perineuriomas, schwannomas and neurofibromas. Hybrid schwannoma-perineurioma represents a cutaneous, subcutaneous or occasionally intra-osseous tumour with schwannian cytomorphology and perineurioma-like architecture consisting of a mixture of both types of cells. These tumours can develop at any age and there is no gender-predilection. Tongue is the most frequently affected site, followed by palate, mouth floor, jugal mucosa, lips and, more rarely, mandible. We present a case of hybrid tumour with schwannoma-perineurioma morphology located on the right mandibular body (intra-osseous) of a 54-year-old female patient. The tumour was symptomatic and evolving for six months. Microscopically, it was encapsulated and highly cellularised, presenting fascicular aspect and exhibiting scant mitotic activity. The tumour consisted of distinct cellular populations involving fusiform cells, cells with wavy and hyperchromatic nucleus or even epithelioid cells. Positive immunostaining for S-100 and epithelial membrane antigen (EMA) was observed. The lesion was completely removed under general anaesthesia, with the patient showing no clinical or radiographic sign of relapse after two-year follow-up. Despite the limited knowledge on the pathogenesis of Hybrid Schwannoma-Perineurioma, these tumours seem to present a non-aggressive biological behaviour. Conservative surgery provides adequate solution without recurrence, even after a long-term follow-up. es
dc.source Bergamini, Mariana-Lobo ; Noberto, Luanna-Priscilla-Montenegro ; Torres, Gabriel-Barroso-Marocco-de Abreu ; Soares, Haroldo Arid ; Martins, Fabiana ; Costa, André Luiz Ferreira ; de Souza, Suzana-Orsini-Cantanhede-Machado ; Braz Silva, Paulo Henrique. Primary intra-osseous Hybrid Schwannoma-Perineurioma in the mandible. En: Journal of Clinical and Experimental Dentistry, 12 9 2020: 888-891 es
dc.title Primary intra-osseous Hybrid Schwannoma-Perineurioma in the mandible es
dc.type info:eu-repo/semantics/article en
dc.type info:eu-repo/semantics/publishedVersion en
dc.subject.unesco UNESCO::CIENCIAS MÉDICAS es
dc.identifier.doi 10.4317/jced.57035 es

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