title: Description of a Rare Case of Nodular Fasciitis of the Apical Aspect of the Upper Buccal Sulcus.
abstract: This report describes a rare case of nodular fasciitis (NF) of the oral cavity, discussing the clinical, histological, and immunohistochemical characteristics. Histopathologic diagnosis of this type of lesion can be challenging due to its differential diagnosis, which principally includes sarcoma. The patient presented with a painless, well-defined nodule, reported as increasing in size, located at the apical aspect of the upper left buccal sulcus. Histologically, the lesion revealed spindle cell proliferation arranged in fascicles, while immunohistochemistry demonstrated positivity for smooth muscle actin. Eight months after complete surgical excision, no signs of local recurrence have been observed.
authors.affiliation: Department of Oral Pathology, Sao Leopoldo Mandic Institute and Research Center, Rua José Rocha Junqueira13, Ponte Preta, 13045-755 Campinas, SP, Brazil.
authors.forename: Ana Amélia
authors.initials: AA
authors.lastname: Souza
authors.affiliation: Department of Oral Pathology, Sao Leopoldo Mandic Institute and Research Center, Rua José Rocha Junqueira13, Ponte Preta, 13045-755 Campinas, SP, Brazil.
authors.forename: Eldon Guttenberg
authors.initials: EG
authors.lastname: Cariri Neto
authors.affiliation: Department of Oral Pathology, Sao Leopoldo Mandic Institute and Research Center, Rua José Rocha Junqueira13, Ponte Preta, 13045-755 Campinas, SP, Brazil.
authors.forename: Vera Cavalcanti
authors.initials: VC
authors.lastname: de Araújo
authors.affiliation: Department of Oral Pathology, Sao Leopoldo Mandic Institute and Research Center, Rua José Rocha Junqueira13, Ponte Preta, 13045-755 Campinas, SP, Brazil.
authors.forename: Fabricio
authors.initials: F
authors.lastname: Passador-Santos
authors.affiliation: Department of Pathology, Escola Paulista de Medicina, Rua Botucatu 740, Vila Clementino, 04023-900 Sao Paulo, SP, Brazil.
authors.forename: Maria Teresa de Seixas
authors.initials: MT
authors.lastname: Alves
authors.affiliation: Department of Oral Pathology, Sao Leopoldo Mandic Institute and Research Center, Rua José Rocha Junqueira13, Ponte Preta, 13045-755 Campinas, SP, Brazil.
authors.forename: Andresa Borges
authors.initials: AB
authors.lastname: Soares