Difference between revisions of "Lymphoepithelioma-like carcinoma"
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'''Lymphoepithelioma-like carcinoma''', abbreviated '''LELC''', is a very rare, poorly differentiated, malignant epithelial tumour. | '''Lymphoepithelioma-like carcinoma''', abbreviated '''LELC''', is a very rare, poorly differentiated, malignant epithelial tumour. | ||
It can be considered a subtype of [[squamous carcinoma]] ([[AKA]] squamous cell carcinoma);<ref>URL: [http://www.pathconsultddx.com/pathCon/diagnosis?pii=S1559-8675%2806%2970297-2#back-bib45 http://www.pathconsultddx.com/pathCon/diagnosis?pii=S1559-8675%2806%2970297-2#back-bib45]. Accessed on: 26 May 2011.</ref> however, some advocate it be considered a separate entity.<ref name=pmid11147469>{{Cite journal | last1 = Skinner | first1 = NE. | last2 = Horowitz | first2 = RI. | last3 = Majmudar | first3 = B. | title = Lymphoepithelioma-like carcinoma of the uterine cervix. | journal = South Med J | volume = 93 | issue = 10 | pages = 1024-7 | month = Oct | year = 2000 | doi = | PMID = 11147469 }}</ref> | |||
==General== | ==General== | ||
| Line 36: | Line 38: | ||
*[[Nasopharyngeal carcinoma]]. | *[[Nasopharyngeal carcinoma]]. | ||
*[[EBV]]. | *[[EBV]]. | ||
*[[Squamous cell carcinoma]]. | |||
==References== | ==References== | ||
Revision as of 17:20, 26 May 2011
Lymphoepithelioma-like carcinoma, abbreviated LELC, is a very rare, poorly differentiated, malignant epithelial tumour.
It can be considered a subtype of squamous carcinoma (AKA squamous cell carcinoma);[1] however, some advocate it be considered a separate entity.[2]
General
It is thought to be related to nasopharyngeal carcinoma (AKA lymphoepithelioma).[3][4]
Epidemiology:
- Common in Inuit and some Asians.[5]
Etiology:
- Associated with EBV,[3] in most anatomical sites (nasopharynx, stomach, lung, thymus, salivary gland); the skin and uterine cervix appear to be exceptions.[6]
- The exception to the exception: there is a case report of EBV in LELC of the skin.[7]
Notes:
- The (macroscopic, microscopic, epidemiologic, prognostic) features of LELC are very similar to medullary carcinoma -- EBV status is one differentiator.[6]
Microscopic
Features:
- Clusters of cohesive squamoid cells with:
- Abundant dense cytoplasm.
- Central nuclei +/- small/indistinct nucleoli.
- Surrounded by a prominent lymphoid component - key feature.
DDx:
Images:
See also
References
- ↑ URL: http://www.pathconsultddx.com/pathCon/diagnosis?pii=S1559-8675%2806%2970297-2#back-bib45. Accessed on: 26 May 2011.
- ↑ Skinner, NE.; Horowitz, RI.; Majmudar, B. (Oct 2000). "Lymphoepithelioma-like carcinoma of the uterine cervix.". South Med J 93 (10): 1024-7. PMID 11147469.
- ↑ 3.0 3.1 Mayer, EK.; Beckley, I.; Winkler, MH. (Mar 2007). "Lymphoepithelioma-like carcinoma of the urinary bladder--diagnostic and clinical implications.". Nat Clin Pract Urol 4 (3): 167-71. doi:10.1038/ncpuro0725. PMID 17347662.
- ↑ 4.0 4.1 URL: http://dermatology.cdlib.org/148/case_presentations/lymphoepithelioma/arsenovic.html. Accessed on: 11 May 2011.
- ↑ URL: http://www.pathconsultddx.com/pathCon/diagnosis?pii=S1559-8675%2806%2970335-7. Accessed on: 11 May 2011.
- ↑ 6.0 6.1 Lespagnard, L.; Cochaux, P.; Larsimont, D.; Degeyter, M.; Velu, T.; Heimann, R. (Apr 1995). "Absence of Epstein-Barr virus in medullary carcinoma of the breast as demonstrated by immunophenotyping, in situ hybridization and polymerase chain reaction.". Am J Clin Pathol 103 (4): 449-52. PMID 7726142.
- ↑ Aoki, R.; Mitsui, H.; Harada, K.; Kawamura, T.; Shibagaki, N.; Tsukamoto, K.; Murata, S.; Shimada, S. (Apr 2010). "A case of lymphoepithelioma-like carcinoma of the skin associated with Epstein-Barr virus infection.". J Am Acad Dermatol 62 (4): 681-4. doi:10.1016/j.jaad.2008.07.024. PMID 20227583.