Intraoral Adult Rhabdomyoma: A Case Report

• Main Authors: Ana Amelia Souza, Vera Cavalcanti de Araújo, Fabricio Passador Santos, Elizabeth Ferreira Martinez, Jose Ferreira de Menezes Filho, Ney Soares de Araujo, Andresa Borges Soares
• Format: Article
• Language: English
• Published: Hindawi Limited 2013-01-01
• Series: Case Reports in Dentistry
• Online Access: http://dx.doi.org/10.1155/2013/741548

A case of adult rhabdomyoma is reported. The lesion is a rare benign tumor of skeletal muscle origin which occurs predominantly in the head and neck region. In the present case, the clinical diagnosis favored a benign salivary gland tumor. Histologically, the tumor was composed of large round, oval, and polygonal cells of varying size with abundant pale, eosinophilic, fine, granular cytoplasm with peripherally located nuclei. Immunohistochemically, the lesion was positive for muscle-specific actin, smooth muscle actin, desmin, S100 protein, and Masson’s trichrome. Electron microscopic examination confirmed the presence of numerous myofibrils. The lesion was treated by surgical resection. The clinical, histological, immunohistochemical, and ultrastructural features are discussed in this study.