Immunohistochemical evaluation of salivary gland tumors differentiation and proliferation by using calponin and telomerase.

Background: Salivary gland tumors are a heterogeneous group of lesions with diverse histological features. Hence they are considered as a diagnostic challenge for the pathologist. Myoepithelial cells are considered as a key in the morphogenetic process, with diverse differentiation in various salivary gland tumors.