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  • Most neoplasms in parotid 75%, 0.8% in sublingual glands.
  • Remainder equally distributed between submandibular gland and minor salivary glands
  • Incidence of malignant neoplasm increases after 4increases 4th and 5th decades and peaks 65and 65-75 years.
  • Benign neoplasm present slightly earlier.
  • Malignant neoplasm occur most often in men
  • Cancers of the salivary glands account for only 6% of H&N cancers
  • Only 0.3% of all cancers
  • Low grade:- well formed glandular structures¬† and prominent mucin filled cystic spaces, minimal cellular atypia and a high proportion of mucous.
  • Intermediate grade:- they have solid areas of epidermoid cells or squamous cells with intermediate basaloid cells. Fewer cyst formations as compared to low grade.
  • High grade:- it consists of cells present as solid nests and cords of intermediate basaloid cells and epidermoid cells. Prominent nuclear pleomorphism and mitotic activity. Necrosis and perineural invasion maybe present.

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