Mantle cell lymphoma

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Mantle cell lymphoma, abbreviated MCL, is less common small cell lymphoma that is relatively aggressive when compared to other small cell lymphomas.

Mantle cell lymphoma
Diagnosis in short

Mantle cell lymphoma. H&E stain.
LM small monomorphic (uniform size, shape and staining) lymphoid population with abundant mitoses, +/-scattered epithelioid histiocytes (should not be confused with tingible-body macrophages), +/-sclerosed blood vessels
LM DDx other small cell lymphomas (esp. MALT lymphoma), Burkitt lymphoma
IHC cyclin D1 +ve, CD5 +ve, CD43 +ve, CD20 +ve, CD23 -ve
Molecular t(11;14)(q13;q32) / IGH-CCND1
Site lymph node, GI tract, other sites
Prevalence not common
Prognosis poor

General

  • Relatively aggressive - guarded prognosis.[1]

GI tract - typically:[2]

  • Abdominal pain (~37% of cases) or GI bleeding (~26% of cases).

Gross

  • GI tract: polypoid lesions (~50% of cases).[2]

Microscopic

Features:[3]

  • Small monomorphic (uniform size, shape and staining) lymphoid population.
  • Abundant mitoses.
  • Scattered epithelioid histiocytes (should not be confused with tingible-body macrophages).
  • Sclerosed blood vessels.

DDx:

Images

  • MCL - low mag. (WC)

  • MCL - intermed. mag. (WC)

  • MCL - low mag. - cyclin D1. (WC)

  • MCL - intermed. mag. - cyclin D1. (WC)

www:

IHC

  • CD45 +ve.
  • CD20 +ve.
  • CD79a +ve.
  • CD5 +ve -- important.
    • Negative in case reports.[4]
  • CD43 +ve.
  • Cyclin D1 +ve -- key immunostain.

Others:

  • CD23 -ve.
    • Positive in CLL.

Molecular

  • t(11;14)(q13;q32) / IGH-CCND1.[6]

See also

References

  1. ↑ Hankin, RC.; Hunter, SV. (Dec 1999). "Mantle cell lymphoma.". Arch Pathol Lab Med 123 (12): 1182-8. doi:10.1043/0003-9985(1999)1231182:MCL2.0.CO;2. PMID 10583923.
  2. ↑ 2.0 2.1 Kim, JH.; Jung, HW.; Kang, KJ.; Min, BH.; Lee, JH.; Chang, DK.; Kim, YH.; Son, HJ. et al. (2012). "Endoscopic findings in mantle cell lymphoma with gastrointestinal tract involvement.". Acta Haematol 127 (3): 129-34. doi:10.1159/000333139. PMID 22236942.
  3. ↑ Good, D. 17 August 2010.
  4. ↑ URL: http://path.upmc.edu/cases/case308/dx.html. Accessed on: 14 January 2012.
  5. ↑ Online 'Mendelian Inheritance in Man' (OMIM) 168461
  6. ↑ URL: http://atlasgeneticsoncology.org/Anomalies/t1114ID2021.html. Accessed on: 10 August 2010.
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