Difference between revisions of "Nasal cavity"

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==Nasal polyps==
 
==Nasal polyps==
 
Look for signs of malignancy.
 
Look for signs of malignancy.
{{Further|Tumor evaluation}}
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{{Further|Evaluation of suspected malignancies}}
[[File:Histopathology of a nasal polyp.jpg|thumb|Benign nasal polyp (not otherwise specified), consisting of hyperplastic edematous connective tissue with some seromucous glands and cells representing inflammation (mostly neutrophils and eosinophils). In early stages, the surface of the nasal polyp is covered by normal respiratory epithelium, but later it undergoes metaplastic change to squamous type epithelium (because of the constant irritation and inflammation). The submucosa shows large intercellular spaces filled with serous fluid.<ref>{{Cite book|url=https://books.google.com/books?id=Zm3jBwAAQBAJ&pg=PA168|title=Ear, Nose and Throat Histopathology|last=Michaels|first=Leslie|date=2012-12-06|publisher=Springer Science & Business Media|isbn=9781447133322|language=en|page=168}}</ref>]]
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[[File:Histopathology of a nasal polyp.jpg|thumb|'''Benign nasal polyp''' (not otherwise specified), consisting of hyperplastic edematous connective tissue with some seromucous glands and cells representing inflammation (mostly neutrophils and eosinophils). In early stages, the surface of the nasal polyp is covered by normal respiratory epithelium, but later it undergoes metaplastic change to squamous type epithelium (because of the constant irritation and inflammation). The submucosa shows large intercellular spaces filled with serous fluid.<ref>{{Cite book|url=https://books.google.com/books?id=Zm3jBwAAQBAJ&pg=PA168|title=Ear, Nose and Throat Histopathology|last=Michaels|first=Leslie|date=2012-12-06|publisher=Springer Science & Business Media|isbn=9781447133322|language=en|page=168}}</ref>]]
  
 
Main differential diagnoses:
 
Main differential diagnoses:
 
<gallery mode=packed heights=200>
 
<gallery mode=packed heights=200>
File:Histopathology of inverted papilloma.jpg|Inverted papilloma, wherein the surface epithelial cells grow downward into the underlying supportive tissue.
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File:Histopathology of inverted papilloma.jpg|'''Inverted papilloma''', wherein the surface epithelial cells grow downward into the underlying supportive tissue.
File:Histopathology of nasal squamous papilloma.jpg|Squamous papilloma.
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File:Histopathology of nasal squamous papilloma.jpg|'''Squamous papilloma''', with acanthosis and hyperkerratosis.
 
</gallery>
 
</gallery>
 
{{Bottom}}
 
{{Bottom}}

Latest revision as of 13:20, 5 August 2020

Author: Mikael Häggström [notes 1]

Nasal polyps

Look for signs of malignancy.

Further information: Evaluation of suspected malignancies
Benign nasal polyp (not otherwise specified), consisting of hyperplastic edematous connective tissue with some seromucous glands and cells representing inflammation (mostly neutrophils and eosinophils). In early stages, the surface of the nasal polyp is covered by normal respiratory epithelium, but later it undergoes metaplastic change to squamous type epithelium (because of the constant irritation and inflammation). The submucosa shows large intercellular spaces filled with serous fluid.[1]

Main differential diagnoses:

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.