title: Myoepithelioma.
abstract: Myoepithelioma is a benign salivary gland tumor in the head and neck region, accounting for 1-1.5% of all glandular tumors. The diagnosis is rendered histopathologically, and it includes the proliferation of myoepithelial cells, without chondroid or myxochondroid stroma and ductal components (up to 5% of ductal component is acceptable). In our case report, this lesion has occurred in a 46-year-old female patient, and presented as well defined, nodular growth on the right posterior palatal region. Bony erosion and invasion were observed radiographically, and the lesion was excised surgically, with 1-2 cm of clear margin. The microscopic features included proliferating tumor sheets, composed of bland looking spindle and plasmacytoid shaped myoepithelial cells, and few cells showed clear cytoplasm, which were confirmed immunohistochemically as myoepithelial cells. Thus, the final diagnosis of benign myoepithelioma was rendered and no recurrence had been reported so far in the regular follow-up.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Sri Ramakrishna Dental College and Hospital, SNR College Road, Nava India, Coimbatore, India.
authors.forename: Ramasamy Sundararajan
authors.initials: RS
authors.lastname: Karthik
authors.affiliation: Department of Conservative Dentistry and Endodontics, Vivekananda Dental College and Hospital, Thiruchengode, Namakkal, India.
authors.forename: Jambai Sampathkumar
authors.initials: JS
authors.lastname: Sivakumar
authors.affiliation: Department of Prosthodontics, SRM Dental College and Hospital, Katankulathur, Chennai, India.
authors.forename: Ramanujam
authors.initials: R
authors.lastname: Cholan
authors.affiliation: Department of Oral and Maxillofacial Surgery, SRM Dental College and Hospital, Katankulathur, Chennai, India.
authors.lastname: Shanmugapriya
authors.affiliation: Department of Oral and Maxillofacial Surgery, Sri Ramakrishna Dental College and Hospital, Coimbatore, India.
authors.forename: Veerakesari Sundara
authors.initials: VS
authors.lastname: Rajan
authors.affiliation: Department of Oral and Maxillofacial Surgery, Moorthy Dental Clinic, Madurai, India.
authors.forename: Murugesan Senthil
authors.initials: MS
authors.lastname: Moorthy
authors.affiliation: Department of Oral Pathology, Vivekananda Dental College and Hospital, Thiruchengode, Namakkal, India.
authors.forename: A
authors.initials: A
authors.lastname: Yamunadevi
authors.affiliation: Dental Surgeon, Archident Oral Care, Coimbatore, India.
authors.forename: B Vidula
authors.initials: BV
authors.lastname: Karthik
keywords: Benign salivary gland lesion; myoepithelial cells; myoepithelioma