Myoepithelioma of Parotid: A diagnostic dilemma

Myoepitheliomas are rare benign salivary gland neoplasms which originate from ectodermally derived contractile smooth muscle cells i.e. myoepithelial cells which lack ductal differentiation. They account for only 1-1.5% of all salivary gland neoplasms. Myoepithelioma was considered as a variant of Pleomorphic adenoma in the past, but since 1991 it has been considered as a separate clinical entity by WHO.Their preoparative diagnosis on cytologic features is possible but is often difficult. Here we are discussing a case of parotid swelling which was cytologically diagnosed as basal cell adenoma but on histopathological and immunohistochemical studies, it was proved as a case of myoepithelioma.