Clear cell hidradenoma: An unusual tumor of the oral cavity.

Clear cell hidradenoma (CCH) is a benign tumor of skin appendage. This lesion is commonly seen on the head, face, extremities and rarely in the oral cavity. The clinical appearance of this lesion is not specific and differential diagnosis from other lesions, both benign and malignant, can only be made after complete removal of the lesion. Histopathology of these lesions is often confused with tumors of salivary glands because of their striking resemblance. In this case of oral CCH, histopathology was an important aid in the diagnosis and hence, CCH should be considered in the differential diagnosis of lesions of the oral cavity.