Nasopharyngeal carcinoma pathophysiology: Difference between revisions
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Image:Lymphoepithelioma met to LN 2.jpg|Undifferentiated nasopharyngeal carcinoma - high power | Image:Lymphoepithelioma met to LN 2.jpg|Undifferentiated nasopharyngeal carcinoma - high power | ||
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===Genetics=== | |||
Genes involved in pathogenesis of nasopharyngeal carcinoma include: | |||
*''[[MDM2]]'' | |||
*''[[TP53]]'' | |||
*''[[RAD51L1]]'' | |||
*''[[TNFRSF19]]'' | |||
*''[[MDS1-EVI1]]'' | |||
*''[[CDKN2A]]'' | |||
*''[[CDKN2B]] | |||
===Gross=== | ===Gross=== | ||
*Nasal cavity involvement - common in early disease<ref name=pmid22194474 >{{Cite journal | last1 = Abdel Khalek Abdel Razek | first1 = A. | last2 = King | first2 = A. | title = MRI and CT of nasopharyngeal carcinoma. | journal = AJR Am J Roentgenol | volume = 198 | issue = 1 | pages = 11-8 | month = Jan | year = 2012 | doi = 10.2214/AJR.11.6954 | PMID = 22194474 }}</ref> | *Nasal cavity involvement - common in early disease<ref name=pmid22194474 >{{Cite journal | last1 = Abdel Khalek Abdel Razek | first1 = A. | last2 = King | first2 = A. | title = MRI and CT of nasopharyngeal carcinoma. | journal = AJR Am J Roentgenol | volume = 198 | issue = 1 | pages = 11-8 | month = Jan | year = 2012 | doi = 10.2214/AJR.11.6954 | PMID = 22194474 }}</ref> | ||
Revision as of 15:24, 24 September 2015
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Nasopharyngeal carcinoma Microchapters |
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Differentiating Nasopharyngeal carcinoma from other Diseases |
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Diagnosis |
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Treatment |
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Case Studies |
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Nasopharyngeal carcinoma pathophysiology On the Web |
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American Roentgen Ray Society Images of Nasopharyngeal carcinoma pathophysiology |
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Risk calculators and risk factors for Nasopharyngeal carcinoma pathophysiology |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Faizan Sheraz, M.D. [2]
Overview
On microscopic histopathological analysis, abundant dense eosinophilic cytoplasm and prominent lymphoid component are characteristic findings of nasopharyngeal carcinoma.
Pathology
Nasopharyngeal carcinoma may be classified according to microscopic features into 3 subtypes:[1]
- Well-differentiated (keratinizing type)
- Moderately-differentiated (nonkeratinizing type)
- Undifferentiated (most strongly associated with Epstein-Barr virus infection)
-
Undifferentiated nasopharyngeal carcinoma - low power -
Undifferentiated nasopharyngeal carcinoma - med. power -
Undifferentiated nasopharyngeal carcinoma - high power
Genetics
Genes involved in pathogenesis of nasopharyngeal carcinoma include:
Gross
- Nasal cavity involvement - common in early disease[2]
Microscopic
Features:[3]
- Prominent lymphoid component - key feature
- Features of squamous cell carcinoma:
- Cohesive cells with:
- Abundant dense eosinophilic cytoplasm
- Central nuclei +/- small/indistinct nucleoli
- Cohesive cells with:
Immunohistochemistry
Immunohistochemistry stains for nasopharyngeal carcinoma include:
- EBER positive
- p16 negative[4]
References
- ↑ Richard Cote, Saul Suster, Lawrence Weiss, Noel Weidner (Editor). Modern Surgical Pathology (2 Volume Set). London: W B Saunders. ISBN 0-7216-7253-1.
- ↑ Abdel Khalek Abdel Razek, A.; King, A. (2012). "MRI and CT of nasopharyngeal carcinoma". AJR Am J Roentgenol. 198 (1): 11–8. doi:10.2214/AJR.11.6954. PMID 22194474. Unknown parameter
|month=ignored (help) - ↑ Nasopharyngeal carcinoma http://librepathology.org/wiki/index.php/Nasopharyngeal_carcinoma
- ↑ Gulley ML, Nicholls JM, Schneider BG, Amin MB, Ro JY, Geradts J (1998). "Nasopharyngeal carcinomas frequently lack the p16/MTS1 tumor suppressor protein but consistently express the retinoblastoma gene product". Am. J. Pathol. 152 (4): 865–9. PMC 1858242. PMID 9546345. Unknown parameter
|month=ignored (help)