Ultrastructure of sialadenoma papilliferum
Fantasia, J.E.; Nocco, C.E.; Lally, E.T.
Archives of Pathology and Laboratory Medicine 110(6): 523-527
1986
ISSN/ISBN: 0003-9985 PMID: 3754726 Document Number: 279332
Sialadenoma papilliferum is a rare tumor of salivary gland origin and has been reported in the parotid and minor salivary glands of the oral cavity. This tumor is morphologically similar to the papillary syringoadenoma of the sweat gland. We report the clinical and morphologic features of five cases and review the literature. Ultrastructural examination of case 1 revealed the predominant cell type to be an oncocytic cell. These cells contained numerous mitochondria, exhibited parallel filaments within the cell cytoplasm, and were attached by desmosomes. The neoplastic cells appear to exhibit characteristic features of various cell types of the salivary gland duct apparatus.