Abstract
A 57-year-old woman presented with a two month history of left nasal obstruction. Anterior rhinoscopy revealed a large soft mass in the left nasal cavity. Denker's operation demonstrated that the tumor arose in the left nose but the maxillary and ethmoid sinuses were not involved by the tumor.Under light microscopy, the tumor cells were arranged in papillae, showed distinct granular eosinophilia and small empty spaces in their cytoplasm. P. A. S. stains were positive for empty spaces, and P. T. A. H. stains were positive for cytoplasmic granules.Electron microscopy showed intercellular and intracellular canaliculi in the tumor cells with numerous microvilli; their cytoplasm was packed with mitochondria of various sizes. On the free borders of the tumor cells cilia were seen occasionally. This tumor was diagnosed oncocytic microcystic papillary adenoma from these histological findings. The histogenesis of this tumor is discussed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
