title: Vascular leiomyoma of the oral cavity. Clinical, histopathological and immunohistochemical characteristics. Presentation of five cases and review of the literature.
abstract: Leiomyoma, a benign neoplasia arising from smooth muscle is an uncommon neoplasia of the oral cavity. The most common histological subtype in the oral cavity is the vascular one. To supplement information on vascular leiomyoma of the oral cavity (VLOC), we present cases of VLOC describing their clinical, histological, and immunohistochemical characteristics. Case reports. Five cases of VLOC (3 females; 2 males) from the Clinical and Experimental Pathology Laboratory, Dental School, National Autonomous University of México, are included. The most frequent clinical characteristic of VLOC was a single, asymptomatic, slow growing nodule. The age average of the cases was 40.6, however 3 out of our 5 cases were < or = 40 years old at the moment of their diagnosis. The lesions were composed of fusiform cells arranged in bundles or fascicles. The neoplastic cells were characterized by eosinophilic cytoplasm and tapered nuclei. The presence of vascular spaces was prominent in all cases. The immunocharacteristics of VLOC neoplastic cells were: alpha smooth muscle (+); vimentin (+), desmin (+), CD34 (-) and S-100 protein (-). The endothelial cells of vascular spaces were CD34 (+). Differential diagnosis of VLOC with fusocellular neoplasm is discussed.
authors.affiliation: Laboratorio de Patología Clínica y Experimental, División de Estudios de Postgrado e Investigación, Facultad de Odontología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Coyoacán 04510, México, DF México. lgaitan @ servidor.unam.mx
authors.forename: Luis Alberto
authors.initials: LA
authors.lastname: Gaitan Cepeda
authors.forename: Daniel
authors.initials: D
authors.lastname: Quezada Rivera
authors.forename: Fernando
authors.initials: F
authors.lastname: Tenorio Rocha
authors.forename: Elba Rosa
authors.initials: ER
authors.lastname: Leyva Huerta
authors.forename: Edgar Ramiro
authors.initials: ER
authors.lastname: Mendez Sánchez
mesh_terms: D000328:Adult; D018229:Angiomyoma / Q000473:pathology*; D005260:Female; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D009062:Mouth Neoplasms / Q000473:pathology*