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Difference between revisions of "Granular cell tumour"
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*Usually benign. | *Usually benign. | ||
*May seen in the context of ''LEOPARD syndrome'' and a mutation in the ''PTPN11 gene''.<ref name=pmid19054014>{{Cite journal | last1 = Schrader | first1 = KA. | last2 = Nelson | first2 = TN. | last3 = De Luca | first3 = A. | last4 = Huntsman | first4 = DG. | last5 = McGillivray | first5 = BC. | title = Multiple granular cell tumors are an associated feature of LEOPARD syndrome caused by mutation in PTPN11. | journal = Clin Genet | volume = 75 | issue = 2 | pages = 185-9 | month = Feb | year = 2009 | doi = 10.1111/j.1399-0004.2008.01100.x | PMID = 19054014 }}</ref> | *May seen in the context of ''LEOPARD syndrome'' and a mutation in the ''PTPN11 gene''.<ref name=pmid19054014>{{Cite journal | last1 = Schrader | first1 = KA. | last2 = Nelson | first2 = TN. | last3 = De Luca | first3 = A. | last4 = Huntsman | first4 = DG. | last5 = McGillivray | first5 = BC. | title = Multiple granular cell tumors are an associated feature of LEOPARD syndrome caused by mutation in PTPN11. | journal = Clin Genet | volume = 75 | issue = 2 | pages = 185-9 | month = Feb | year = 2009 | doi = 10.1111/j.1399-0004.2008.01100.x | PMID = 19054014 }}</ref> | ||
**PTPN11 = protein-tyrosine phosphatase non-receptor type 11.<ref>{{OMIM|176876}}</ref> | |||
***Gene implicated in ''Noonan syndrome 1''. | |||
*May mimic (well-differentiated) [[squamous cell carcinoma]] - histopathologically. | *May mimic (well-differentiated) [[squamous cell carcinoma]] - histopathologically. | ||
**There is a well-described phenomenon called ''pseudoepitheliomatous hyperplasia''.<ref name=pmid16487362>{{cite journal |author=Abu-Eid R, Landini G |title=Morphometrical differences between pseudoepitheliomatous hyperplasia in granular cell tumours and squamous cell carcinomas |journal=Histopathology |volume=48 |issue=4 |pages=407–16 |year=2006 |month=March |pmid=16487362 |doi=10.1111/j.1365-2559.2006.02350.x |url=}}</ref> | **There is a well-described phenomenon called ''pseudoepitheliomatous hyperplasia''.<ref name=pmid16487362>{{cite journal |author=Abu-Eid R, Landini G |title=Morphometrical differences between pseudoepitheliomatous hyperplasia in granular cell tumours and squamous cell carcinomas |journal=Histopathology |volume=48 |issue=4 |pages=407–16 |year=2006 |month=March |pmid=16487362 |doi=10.1111/j.1365-2559.2006.02350.x |url=}}</ref> | ||