Nasal cavity and paranasal sinuses

From patholines.org
Jump to navigation Jump to search

Author: Mikael Häggström [note 1]

Nasal or sinonasal polyps

Look for signs of malignancy. Further information: Evaluation of suspected malignancies

Benign nasal/sinonasal polyp (not otherwise specified), consisting of hyperplastic edematous connective tissue with some seromucous glands and inflammation (mostly neutrophils and eosinophils), surrounded by respiratory or squamous epithelium.[1] It can be termed inflammatory nasal/sinonasal polyp when inflammation is more pronounced.

Main differential diagnoses:

  • Inverted papilloma, wherein the surface epithelial cells grow downward into the underlying supportive tissue.

  • Squamous papilloma, with acanthosis and hyperkerratosis.

In case of inflammation, confirm that it is mixed and that lymphocytes are not atypical (otherwise, consult hematopathology, particularly whether it could be T cell lymphoma, nasal type.

Notes

  1. ↑ For a full list of contributors, see article history. Creators of images are attributed at the image description pages, seen by clicking on the images. See Patholines:Authorship for details.

Main page

References

  1. ↑ Michaels, Leslie (2012-12-06) (in en). Ear, Nose and Throat Histopathology . Springer Science & Business Media. p. 168. ISBN 9781447133322. 

Image sources


Retrieved from "https://patholines.org/index.php?title=Nasal_cavity_and_paranasal_sinuses&oldid=6352"