Oligodendroglioma pathophysiology: Difference between revisions

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===Genetics===
===Genetics===
*Development of oligodendroglioma is the result from multiple [[mutation|genetic mutations]].
*Development of oligodendroglioma is the result from multiple [[mutation|genetic mutations]].
*Genes associated with the pathogenesis of oligodendroglioma include:<ref name="pmid22072542">{{cite journal| author=Yip S, Butterfield YS, Morozova O, Chittaranjan S, Blough MD, An J et al.| title=Concurrent CIC mutations, IDH mutations, and 1p/19q loss distinguish oligodendrogliomas from other cancers. | journal=J Pathol | year= 2012 | volume= 226 | issue= 1 | pages= 7-16 | pmid=22072542 | doi=10.1002/path.2995 | pmc=PMC3246739 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=22072542  }} </ref><ref name=transloc>Molecular genetics of oligodendroglioma. https://en.wikipedia.org/wiki/Oligodendroglioma</ref><ref name="pmid21817013">{{cite journal| author=Bettegowda C, Agrawal N, Jiao Y, Sausen M, Wood LD, Hruban RH et al.| title=Mutations in CIC and FUBP1 contribute to human oligodendroglioma. | journal=Science | year= 2011 | volume= 333 | issue= 6048 | pages= 1453-5 | pmid=21817013 | doi=10.1126/science.1210557 | pmc=PMC3170506 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=21817013  }} </ref><ref name=prog>Prognosis and treatment of oligodendroglioma. Wikipedia 2015. https://en.wikipedia.org/wiki/Oligodendroglioma</ref>
*Genes associated with the pathogenesis of oligodendroglioma include:<ref name="pmid22072542">{{cite journal| author=Yip S, Butterfield YS, Morozova O, Chittaranjan S, Blough MD, An J et al.| title=Concurrent CIC mutations, IDH mutations, and 1p/19q loss distinguish oligodendrogliomas from other cancers. | journal=J Pathol | year= 2012 | volume= 226 | issue= 1 | pages= 7-16 | pmid=22072542 | doi=10.1002/path.2995 | pmc=PMC3246739 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=22072542  }} </ref><ref name=transloc>Molecular genetics of oligodendroglioma. https://en.wikipedia.org/wiki/Oligodendroglioma</ref><ref name="pmid21817013">{{cite journal| author=Bettegowda C, Agrawal N, Jiao Y, Sausen M, Wood LD, Hruban RH et al.| title=Mutations in CIC and FUBP1 contribute to human oligodendroglioma. | journal=Science | year= 2011 | volume= 333 | issue= 6048 | pages= 1453-5 | pmid=21817013 | doi=10.1126/science.1210557 | pmc=PMC3170506 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=21817013  }} </ref><ref name=prog>Prognosis and treatment of oligodendroglioma. Wikipedia 2015. https://en.wikipedia.org/wiki/Oligodendroglioma</ref><ref name="pmid22072542">{{cite journal| author=Yip S, Butterfield YS, Morozova O, Chittaranjan S, Blough MD, An J et al.| title=Concurrent CIC mutations, IDH mutations, and 1p/19q loss distinguish oligodendrogliomas from other cancers. | journal=J Pathol | year= 2012 | volume= 226 | issue= 1 | pages= 7-16 | pmid=22072542 | doi=10.1002/path.2995 | pmc=PMC3246739 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=22072542  }} </ref><ref name=transloc>Molecular genetics of oligodendroglioma. https://en.wikipedia.org/wiki/Oligodendroglioma</ref><ref name="pmid21817013">{{cite journal| author=Bettegowda C, Agrawal N, Jiao Y, Sausen M, Wood LD, Hruban RH et al.| title=Mutations in CIC and FUBP1 contribute to human oligodendroglioma. | journal=Science | year= 2011 | volume= 333 | issue= 6048 | pages= 1453-5 | pmid=21817013 | doi=10.1126/science.1210557 | pmc=PMC3170506 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=21817013  }} </ref><ref name=prog>Prognosis and treatment of oligodendroglioma. Wikipedia 2015. https://en.wikipedia.org/wiki/Oligodendroglioma</ref><ref name="pmid26068201">{{cite journal| author=Labreche K, Simeonova I, Kamoun A, Gleize V, Chubb D, Letouzé E et al.| title=TCF12 is mutated in anaplastic oligodendroglioma. | journal=Nat Commun | year= 2015 | volume= 6 | issue=  | pages= 7207 | pmid=26068201 | doi=10.1038/ncomms8207 | pmc=PMC4490400 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=26068201  }} </ref>
:*[[translocation|t[1;19][q10;p10]]] (co-deletion of chromosomal arms [[chromosome 1|1p]] and [[chromosome 19|19q]]; most common)
:*[[translocation|t[1;19][q10;p10]]] (co-deletion of chromosomal arms [[chromosome 1|1p]] and [[chromosome 19|19q]]; most common)
:*''[[mutation|NJDS]]''
:*''[[mutation|NJDS]]''

Revision as of 14:31, 9 October 2015

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Sujit Routray, M.D. [2]

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Overview

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Pathogenesis

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Gross Pathology

  • On gross pathology, oligodendroglioma is characterized by a well-circumscribed, gelatinous, gray mass which may expand a gyrus and remodel the skull.[7]
  • Other characteristic gross pathological features associated with oligodendroglioma include:[7]
  • Common intracranial sites associated with oligodendroglioma include:[8]

Microscopic Pathology

On microscopic histopathological analysis, oligodendroglioma is characterized by:[9]

  • Diffusely growing tumor
  • Highly cellular lesion composed of cells resembling fried eggs with:
    • Round nucleus - key feature
    • Distinct cell borders
    • Moderate-to-marked nuclear atypia
    • Clear cytoplasm
      • Some oligodendrogliomas have eosinophilic cytoplasm with focal perinuclear clearing
    • Acutely branched capillary sized vessels - "chicken-wire" like appearance
      • Abundant, delicate appearing; may vaguely resemble a paraganglioma at low power
  • Calcifications - striking feature
  • Perifocal edema - rare
  • Few tumors may exhibit eosinophilic granular bodies
  • Some tumors may show a spongioblastoma-like growth pattern

On microscopic histopathological analysis, anaplastic oligodendroglioma is characterized by:[9]

Immunohistochemistry

Oligodendroglioma is demonstrated by positivity to tumor markers such as:[10][11]

Gallery

  • Oligodendroglioma low magnification showing the characteristic small, branching, chicken wire-like blood vessels.H&E stain.[12]

    Oligodendroglioma low magnification showing the characteristic small, branching, chicken wire-like blood vessels.H&E stain.[12]

  • Oligodendroglioma high magnification showing highly cellular lesion composed of cells resembling fried eggs with distinct cell borders moderate-to-marked nuclear atypia, and a clear cytoplasm. Acutely branched capillary sized vessels - "chicken-wire" like appearance.[12]

    Oligodendroglioma high magnification showing highly cellular lesion composed of cells resembling fried eggs with distinct cell borders moderate-to-marked nuclear atypia, and a clear cytoplasm. Acutely branched capillary sized vessels - "chicken-wire" like appearance.[12]

  • Low power magnification of oligodendroglioma biopsy specimen showing discrete infiltration of the surrounding brain (HE stain, x40 mag).[13]

    Low power magnification of oligodendroglioma biopsy specimen showing discrete infiltration of the surrounding brain (HE stain, x40 mag).[13]

  • Histopathology of anaplastic oligodendroglioma showing minigemistocytes and mitoses among tumor cells with perinuclear halo. HE stain.[13]

    Histopathology of anaplastic oligodendroglioma showing minigemistocytes and mitoses among tumor cells with perinuclear halo. HE stain.[13]

  • Histopathology of anaplastic oligodendroglioma (MAP2 staining) showing perinuclear immunoreactivity of tumor cells.[13]

    Histopathology of anaplastic oligodendroglioma (MAP2 staining) showing perinuclear immunoreactivity of tumor cells.[13]

  • Histopathology of anaplastic oligodendroglioma (IDH1-R132H staining) showing immunoreactivity of tumor cells indicating presence of the isocitrate dehydrogenase 1-R132H mutation.[13]

    Histopathology of anaplastic oligodendroglioma (IDH1-R132H staining) showing immunoreactivity of tumor cells indicating presence of the isocitrate dehydrogenase 1-R132H mutation.[13]

References

  1. ↑ General features of oligodendroglioma. Libre Pathology. http://librepathology.org/wiki/index.php/Oligodendroglioma#cite_note-1
  2. ↑ 2.0 2.1 Yip S, Butterfield YS, Morozova O, Chittaranjan S, Blough MD, An J; et al. (2012). "Concurrent CIC mutations, IDH mutations, and 1p/19q loss distinguish oligodendrogliomas from other cancers". J Pathol. 226 (1): 7–16. doi:10.1002/path.2995. PMC 3246739. PMID 22072542.
  3. ↑ 3.0 3.1 Molecular genetics of oligodendroglioma. https://en.wikipedia.org/wiki/Oligodendroglioma
  4. ↑ 4.0 4.1 Bettegowda C, Agrawal N, Jiao Y, Sausen M, Wood LD, Hruban RH; et al. (2011). "Mutations in CIC and FUBP1 contribute to human oligodendroglioma". Science. 333 (6048): 1453–5. doi:10.1126/science.1210557. PMC 3170506. PMID 21817013.
  5. ↑ 5.0 5.1 Prognosis and treatment of oligodendroglioma. Wikipedia 2015. https://en.wikipedia.org/wiki/Oligodendroglioma
  6. ↑ Labreche K, Simeonova I, Kamoun A, Gleize V, Chubb D, Letouzé E; et al. (2015). "TCF12 is mutated in anaplastic oligodendroglioma". Nat Commun. 6: 7207. doi:10.1038/ncomms8207. PMC 4490400. PMID 26068201.
  7. ↑ 7.0 7.1 Gross appearance of oligodendroglioma. Dr Henry Knipe and Dr Frank Gaillard et al. http://radiopaedia.org/articles/oligodendroglioma
  8. ↑ Gross/radiologic findings of oligodendroglioma. Libre Pathology. http://librepathology.org/wiki/index.php/Oligodendroglioma
  9. ↑ 9.0 9.1 Microscopic features of oligodendroglioma. Libre Pathology. http://librepathology.org/wiki/index.php/Oligodendroglioma
  10. ↑ IHC of oligodendroglioma. Libre Pathology. http://librepathology.org/wiki/index.php/Oligodendroglioma
  11. ↑ Hilbig A, Barbosa-Coutinho LM, Netto GC, Bleil CB, Toscani NV (2006). "[Immunohistochemistry in oligodendrogliomas]". Arq Neuropsiquiatr. 64 (1): 67–71. doi:/S0004-282X2006000100014 Check |doi= value (help). PMID 16622556.
  12. ↑ 12.0 12.1 Images of microscopic appearance of oligodendroglioma. Wikipedia 2015. https://en.wikipedia.org/wiki/Oligodendroglioma
  13. ↑ 13.0 13.1 13.2 13.3 Images of oligodendroglioma. Libre Pathology 2015. http://librepathology.org/wiki/index.php/Oligodendroglioma


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