Difference between revisions of "Lung tumours"

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==Squamous cell carcinoma of the lung==
==Squamous cell carcinoma of the lung==
{{Main|Squamous cell carcinoma}}
{{Main|Squamous cell carcinoma of the lung}}
===General===
*Strong association with smoking.
*May be treated with surgery.
 
===Microscopic===
Features:
*Central nucleus.
*Dense appearing cytoplasm, usu. eosinophilic.
*+/-Small nucleolus.
 
DDx:
*Metastatic [[squamous cell carcinoma]].
*[[Adenocarcinoma of the lung]].
*[[Non-small cell lung carcinoma]] - diagnosis should be avoid if possible.
 
===IHC===
*p40 +ve.<ref name=pmid22056955>{{Cite journal  | last1 = Bishop | first1 = JA. | last2 = Teruya-Feldstein | first2 = J. | last3 = Westra | first3 = WH. | last4 = Pelosi | first4 = G. | last5 = Travis | first5 = WD. | last6 = Rekhtman | first6 = N. | title = p40 (ΔNp63) is superior to p63 for the diagnosis of pulmonary squamous cell carcinoma. | journal = Mod Pathol | volume = 25 | issue = 3 | pages = 405-15 | month = Mar | year = 2012 | doi = 10.1038/modpathol.2011.173 | PMID = 22056955 }}</ref>
**p63 +ve -- less specific.
*TTF-1 -ve.
**Positive in adenocarcinoma.
*Calponin -ve.
*CK5/6 +ve.


==Small cell carcinoma of the lung==
==Small cell carcinoma of the lung==
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