Figure 3.
Adenoid cystic carcinoma: A. Ill-defined mass on the right side of the hard palate with an erythematous surface. B: Adenoid cystic carcinoma, cribiform pattern: proliferation of ductal and miopepithelial cells with hyperchromatic nuclei, arranged in nests forming microcystic spaces filled with basophilic mucoid material, separated by hyalinized fibrous conective tissue. (HE, 10x) 3. C: Perineural invasion, a common feature of adenoid cysic carcinoma (HE, 40x).