Difference between revisions of "Lung tumours"

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==Poorly differentiated carcinoma==
==Poorly differentiated carcinoma==
===General===
{{Main|Poorly differentiated carcinoma of the lung}}
*Should be used when the DDx is ''small cell carcinoma'' versus ''non-small cell carcinoma''.
*''Poorly differentiated carcinoma'' leaves the surgical options on the table.
 
===IHC===
*Lack of staining with [[neuroendocrine markers]] (chromogranin A -ve, synaptophysin -ve, CD56 -ve).
*Keratins +ve.
 
===Sign out===
<pre>
Lung, Left Lower Lobe, Core Biopsy:
- POORLY DIFFERENTIATED CARCINOMA, see comment.
 
COMMENT:
The tumour stains as follows:
POSITIVE: EMA, AE1/AE3.
NEGATIVE: TTF-1, chromogranin A, synaptophysin, CD56, CD45.
 
The morphology would be compatible with small cell carcinoma or basaloid
squamous cell carcinoma. 
 
The neuroendocrine markers (chromogranin A, synaptophysin, CD56) and the squamoid
markers available (p63, CK5/6) are negative; thus, the tumour is not further classified.
</pre>


==Lung metastasis==
==Lung metastasis==
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