Difference between revisions of "Peritumoural lymphocytic response"

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[[Image:Peritumour lymphocytic response - very low mag.jpg|thumb|right|Peritumoural lymphocytic response. [[H&E stain]].]]
[[Image:Peritumour lymphocytic response - very low mag.jpg|thumb|right|Peritumoural lymphocytic response. [[H&E stain]].]]
'''Peritumoural lymphocytic response''' is an uncommon finding in [[colorectal carcinoma]] that is associated with a better prognosis and [[microsatellite instability]].<ref name=pmid7821914/>
'''Peritumoural lymphocytic response''' is an uncommon finding in [[colorectal carcinoma]] that is associated with a better prognosis and [[Microsatellite instability in colorectal cancer|microsatellite instability]].<ref name=pmid7821914/>


It is also known as '''Crohn's like reaction''',<ref name=pmid19825961>{{Cite journal  | last1 = Ogino | first1 = S. | last2 = Nosho | first2 = K. | last3 = Irahara | first3 = N. | last4 = Meyerhardt | first4 = JA. | last5 = Baba | first5 = Y. | last6 = Shima | first6 = K. | last7 = Glickman | first7 = JN. | last8 = Ferrone | first8 = CR. | last9 = Mino-Kenudson | first9 = M. | title = Lymphocytic reaction to colorectal cancer is associated with longer survival, independent of lymph node count, microsatellite instability, and CpG island methylator phenotype. | journal = Clin Cancer Res | volume = 15 | issue = 20 | pages = 6412-20 | month = Oct | year = 2009 | doi = 10.1158/1078-0432.CCR-09-1438 | PMID = 19825961 }}</ref> '''Crohn's-like lymphoid reaction''' and '''Crohn-like response'''.<ref>URL: [http://www.cap.org/apps/docs/committees/cancer/cancer_protocols/2012/Colon_12protocol_3200.pdf http://www.cap.org/apps/docs/committees/cancer/cancer_protocols/2012/Colon_12protocol_3200.pdf]. Accessed on: 14 September 2012.</ref>
It is also known as '''Crohn's like reaction''',<ref name=pmid19825961>{{Cite journal  | last1 = Ogino | first1 = S. | last2 = Nosho | first2 = K. | last3 = Irahara | first3 = N. | last4 = Meyerhardt | first4 = JA. | last5 = Baba | first5 = Y. | last6 = Shima | first6 = K. | last7 = Glickman | first7 = JN. | last8 = Ferrone | first8 = CR. | last9 = Mino-Kenudson | first9 = M. | title = Lymphocytic reaction to colorectal cancer is associated with longer survival, independent of lymph node count, microsatellite instability, and CpG island methylator phenotype. | journal = Clin Cancer Res | volume = 15 | issue = 20 | pages = 6412-20 | month = Oct | year = 2009 | doi = 10.1158/1078-0432.CCR-09-1438 | PMID = 19825961 }}</ref> '''Crohn's-like lymphoid reaction''' and '''Crohn-like response'''.<ref>URL: [http://www.cap.org/apps/docs/committees/cancer/cancer_protocols/2012/Colon_12protocol_3200.pdf http://www.cap.org/apps/docs/committees/cancer/cancer_protocols/2012/Colon_12protocol_3200.pdf]. Accessed on: 14 September 2012.</ref>
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Note:
Note:
*Should '''not''' be confused with [[intratumoural lymphocytic response]].
*Should '''not''' be confused with [[Intratumoural lymphocytic response in colorectal carcinoma|intratumoural lymphocytic response]].
**The intratumoural lymphocytic response is associated with MSI-H cancers.
**The intratumoural lymphocytic response is associated with MSI-H cancers.


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*[[Crohn's disease]].
*[[Crohn's disease]].
*[[Tumour-infiltrating lymphocytes]].
*[[Tumour-infiltrating lymphocytes]].
*[[Intraepithelial lymphocytes]].


==References==
==References==

Latest revision as of 14:34, 25 May 2016

Peritumoural lymphocytic response. H&E stain.

Peritumoural lymphocytic response is an uncommon finding in colorectal carcinoma that is associated with a better prognosis and microsatellite instability.[1]

It is also known as Crohn's like reaction,[2] Crohn's-like lymphoid reaction and Crohn-like response.[3]

General

Microscopic

There are two sets of criteria (Ueno and Graham). The Ueno criteria have a better inter-rater reproducibility than the older Graham criteria[4] and are less complicated.

Ueno criteria (2013)

Required criteria:[5]

  • Non-MALT lymphoid aggregates (peritumoural) >= 1 mm.

Ignore:

  1. Muscosa-associated lymphoid tissue (MALT) = mucosal lymphoid aggregates, submucosal lymphoid aggregates adjacent to the musuclaris mucosae.
  2. Lymph nodes - these have a (fibrous) capsule.
  3. Irregular shape (not round).

Graham criteria (1990)

Required criteria:[4]

  • Peritumoral:
    1. Lymphoid aggregates with germinal centres focally.
    2. Stellate fibrosis.
    3. No previous clinical and pathologic evidence of Crohn's disease.

Note:

Images

  • PLR - very low mag. (WC)

  • PLR - low mag. (WC)

  • PLR - intermed. mag. (WC)

See also

References

  1. ↑ 1.0 1.1 Harrison, JC.; Dean, PJ.; el-Zeky, F.; Vander Zwaag, R. (Jan 1995). "Impact of the Crohn's-like lymphoid reaction on staging of right-sided colon cancer: results of multivariate analysis.". Hum Pathol 26 (1): 31-8. PMID 7821914.
  2. ↑ Ogino, S.; Nosho, K.; Irahara, N.; Meyerhardt, JA.; Baba, Y.; Shima, K.; Glickman, JN.; Ferrone, CR. et al. (Oct 2009). "Lymphocytic reaction to colorectal cancer is associated with longer survival, independent of lymph node count, microsatellite instability, and CpG island methylator phenotype.". Clin Cancer Res 15 (20): 6412-20. doi:10.1158/1078-0432.CCR-09-1438. PMID 19825961.
  3. ↑ URL: http://www.cap.org/apps/docs/committees/cancer/cancer_protocols/2012/Colon_12protocol_3200.pdf. Accessed on: 14 September 2012.
  4. ↑ 4.0 4.1 Graham, DM.; Appelman, HD. (May 1990). "Crohn's-like lymphoid reaction and colorectal carcinoma: a potential histologic prognosticator.". Mod Pathol 3 (3): 332-5. PMID 2362940.
  5. ↑ Ueno, H.; Hashiguchi, Y.; Shimazaki, H.; Shinto, E.; Kajiwara, Y.; Nakanishi, K.; Kato, K.; Maekawa, K. et al. (Apr 2013). "Objective Criteria for Crohn-like Lymphoid Reaction in Colorectal Cancer.". Am J Clin Pathol 139 (4): 434-41. doi:10.1309/AJCPWHUEFTGBWKE4. PMID 23525613.
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