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      Schwanoma palatino en paciente pediátrico de 12 años: una rara presentación clínica. Translated title: Palatine Schwannoma in a 12 year-old pediatric patient : a rare clinical presentation

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          Abstract

          RESUMEN: El schwanoma es un tumor neural que se origina en las células de Schwann presentes en la vaina nerviosa cuya localización más frecuente a nivel oral es el dorso de lengua, siendo mucho más frecuente en adultos. En población pediátrica la presentación es muy rara siendo lengua su ubicación más frecuente, mientras que a nivel palatino solo se conocen 11 reportes en menores de 16 años. El objetivo de este reporte es presentar un caso clínico inusual de schwanoma palatino en un niño chileno de 12 años de edad, quien fue derivado con diagnóstico clínico presuntivo de carcinoma mucoepidermoide. El caso se complementó con radiografía panorámica, Conebeam, y luego biopsia incisional. Finalmente, se diagnosticó schwanoma palatino variedad sólida. Es importante considerar al schwanoma como diagnóstico diferencial en casos de tumores palatinos, en especial en casos pediátricos ya que se pueden presentar similares características clínicas a tumores de glándula salival.

          Translated abstract

          ABSTRACT: The Schwannoma or neurilemmoma tumor originates from Schwann cells present in nerve sheaths. At oral level, its most frequent location is at the back of the tongue, being much more frequent in adults. In the pediatric population, this occurrence is rare and most frequently found in the tongue. At palatal level, only 11 reports are known in children under 16 years of age. The aim of this report is to present an unusual clinical case of palatal schwannoma in a 12-year-old Chilean boy, referred with a clinical diagnosis of mucoepidermoid carcinoma. The case was complemented with panoramic radiography and Cone beam, for its subsequent incisional biopsy. Finally, a solid palatal schwannoma was diagnosed. It is important to consider schwannoma as a differential diagnosis in cases of palatal tumors, especially in pediatric cases, since they can present similar clinical characteristics to salivary gland tumors.

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          Most cited references14

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          Benign solitary Schwannomas (neurilemomas).

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            Head and Neck Schwannomas: 20-Year Experience of a Single Institution Excluding Cutaneous and Acoustic Sites.

            While head and neck sites comprise the most common location of schwannomas, clinicopathologic data regarding those tumors occurring in non-acoustic and non-cutaneous locations are relatively sparse. In this study, therefore, we sought to examine retrospectively the clinical and pathologic features of head and neck schwannomas excised at our institution over a 20-year period. During this period, we identified a total cohort of 85 patients, which included 36 males (42.4 %) and 49 females with average age of 41.3 years, the majority of which presented asymptomatically with a mass. Localized symptoms were, however, associated with all of the schwannomas that arose in the oral cavity and larynx, while tumors within or adjacent to bone were often associated with neurologic complaints (7 of 15 such tumors [46.7 %]). Clinical follow-up data was available in 86.4 % of all cases and demonstrated no recurrences or mortality. Pathologically, the microscopic features were characteristic of those well-described for schwannomas in other sites, including alternating Antoni A and B areas and the presence of degenerative changes. Tumor encapsulation, however, was variable and was completely absent in schwannomas of the nasal cavity, paranasal sinuses, and larynx. Additionally, a significant minority of the tumors (28.2 %) exhibited foci that resembled neurofibroma. Non-acoustic, non-cutaneous schwannomas of the head and neck appear to have clinicopathologic features similar to their soft tissue counterparts with some subsite variation in presentation and/or microscopic features.
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              Schwannoma located in the palate: clinical case and literature review.

              Schwannoma is a benign tumor that originates from the presence of Schwann cells of the peripheral nerves. They are usually asymptomatic, do not recur, and malignant transformation is rare. The preoperative diagnosis is often difficult, and although computed tomography and magnetic resonance imaging are very helpful, in the majority of cases, the diagnosis can only be made during surgery and by histological study. The immunohistochemistry reveals that the Schwannoma cells test positive for S-100 protein. We describe a clinical case of Schwannoma located in the palate of a 15-year-old patient. It is important to highlight that the Schwannoma is usually found in the head and neck, and rarely in the oral cavity. When it does occur in this area, it is more likely to be found in the tongue. Other locations in the oral cavity include: the floor of the mouth, palate, gingiva, vestibular mucosa, lips and mental nerve area, listed from most common to least common. There has been no sign of recurrence two years after surgery.
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                Author and article information

                Journal
                ijoid
                International journal of interdisciplinary dentistry
                Int. j interdiscip. dent.
                Sociedad de Periodoncia de Chile; Sociedad de Implantología Oral de Chile; Sociedad de Prótesis y Rehabilitación Oral de Chile; Sociedad Chilena de Odontopediatría y; Sociedad de Ortodoncia de Chile (Santiago, , Chile )
                2452-5596
                2452-5588
                April 2023
                : 16
                : 1
                : 79-81
                Affiliations
                [1] Valparaíso Valparaíso orgnameUniversidad de Valparaíso orgdiv1Facultad de Odontología Chile
                [3] Viña del Mar orgnameHospital Naval orgdiv1Unidad de Radiología maxilofacial Chile
                [2] Salta orgnameHospital Señor del Milagro orgdiv1Unidad de Estomatología Argentina
                [4] Santiago Santiago de Chile orgnameUniversidad de Chile orgdiv1Facultad de Odontología orgdiv2Departamento de Patología y Medicina Oral Chile
                Article
                S2452-55882023000100079 S2452-5588(23)01600100079
                b53be141-0034-4f4d-8189-8794d7e06fa8

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 07 January 2022
                : 08 February 2022
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 14, Pages: 3
                Product

                SciELO Chile


                Neoplasms,Pediatric dentistry,Neurilemmoma,Schwannoma,Neoplasias,Odontopediatría,Neurilemoma,Schwanoma

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