NUMERO: #20220327

Título: Schwannoma in the lower lip: case report

Nome do Apresentador: Gabriela Fonseca ROCHA

Categoria do Trabalho: Trabalhos Aprovados para Disponibilização em Vídeo (ADV)

Área Temática: Estomatologia

Resumo:
Schwannoma is a benign tumor derived from Schwann cells. About 25% of all schwannomas are diagnosed in the head and neck region, but only 1% of them in the oral cavity. The intraoral lesions show a predilection for the tongue, followed by palate, buccal mucosa and lip. A 26-year-old male was referred complaining of a "cyst on the lower lip" 5 years ago. Intraoral examination showed a painless nodule, normal color, smooth surface, and fibroelastic consistency, located on the lower lip. An excisional biopsy was performed, and the histopathological examination showed a well-circumscribed, encapsulated tumor with predominantly typical Antoni A pattern, present throughout the tumor. Immunohistochemical analysis showed positivity for S100, CD56 and CD34. The diagnosis of Schwannoma was established. The patient is under follow-up, with no signs of lesion recurrence after 1 year. Schwannoma should be considered in the differential diagnosis of nodular lesions on the lip.

Autor 1:  Gabriela Fonseca ROCHA

E-mail 1:  [email protected]

Autor 2:   Moisés Willian Aparecido Gonçalves

E-mail 2:  [email protected]

Autor 3 :  Larissa Doalla de Almeida e Silva

E-mail 3:  [email protected]

Autor 4:  João Luiz de Miranda

E-mail 4:  [email protected]

Autor 5:  Evanio Vilela Silva

E-mail 5:  [email protected]

Autor 6:  Jorge Esquiche León

E-mail 6:  [email protected]

Autor 7:  Ana Terezinha Marques Mesquita

E-mail 7:  [email protected]