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(→Pulmonary carcinoid tumourlet: split out) |
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:Should '''not''' be confused with ''[[benign multicystic mesothelioma]]'' and ''[[benign papillary mesothelioma]]''. | :Should '''not''' be confused with ''[[benign multicystic mesothelioma]]'' and ''[[benign papillary mesothelioma]]''. | ||
{{Main|Malignant mesothelioma}} | {{Main|Malignant mesothelioma}} | ||
==Poorly differentiated carcinoma== | |||
===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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