<prompt> The commonest site of Pleomorphic adenoma is ?Parotid salivary glandSubmandibular salivary glandSublingual glandSubmaxillary gland  <response>: Ans. is a i.e., Parotid salivary glandPleomorphic adenoma o This is the Commonest neoplasm of Salivary glands.o The most Common salivary gland involved is Parotid - represent about 60 tumors in the parotid. o Submandibular and minor salivary glands may also be involved rarely.o Pleomorphic adenoma --- Parotid Submandibular minor salivary glands.o They are derived from a mixture of ductal epithelial and myoepithelial cells and therefore they show both epithelial and mesenchymal differentiation - Also called mixed tumor. 