Difference between revisions of "An introduction to head and neck pathology"

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=Other benign=
=Other benign=
==Vocal cord nodule==
==Vocal cord nodule==
===General===
*Benign.
*[[AKA]] ''singer's nodule''.
*[[AKA]] ''singer's nodule''.
*Etiology: overuse, mechanical trauma (?).
*[[AKA]] ''vocal cord polyp''.
 
{{Main|Vocal cord nodule}}
===Microscopic===
Features:<ref>URL: [http://www.pathconsultddx.com/pathCon/diagnosis?pii=S1559-8675%2806%2970310-2 http://www.pathconsultddx.com/pathCon/diagnosis?pii=S1559-8675%2806%2970310-2]. Accessed on: 4 February 2011.</ref>
*Early:
*#Edema.
*#Fibroblasts proliferation.
*Late:
*#Subepithelial hyaline / stromal hyaline.
*#Blood vessels - dilated.
 
Notes:
*No inflammation.
 
DDx:<ref>{{Ref HaNP|9}}</ref>
*[[Amyloidosis]].
*[[Granular cell tumour]].
*Spindle cell [[squamous cell carcinoma of the head and neck|squamous cell carcinoma]].
*Myxoma.
*Ductal-type cyst.
 
Images:
*[http://commons.wikimedia.org/wiki/File:Laryngeal_nodule_(1).jpg?uselang=en Laryngeal nodule - low mag. (WC)].
*[http://commons.wikimedia.org/wiki/File:Laryngeal_nodule_(2).jpg?uselang=en Laryngeal nodule (WC)].
 
===Sign out===
<pre>
VOCAL CORD LESION, EXCISION:
- STRATIFIED SQUAMOUS EPITHELIUM WITH PARAKERATOSIS AND SUBEPITHELIAL
  HYALINE MATERIAL, CONSISTENT WITH WITH VOCAL CORD NODULE OR POLYP.
- NEGATIVE FOR MALIGNANCY.
</pre>


==Squamous papilloma==
==Squamous papilloma==
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