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Difference between revisions of "Diffuse astrocytoma"
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*The existence of diffuse astrocytoma, IDH wildtype is challenged.<ref>{{Cite journal | last1 = Reuss | first1 = DE. | last2 = Kratz | first2 = A. | last3 = Sahm | first3 = F. | last4 = Capper | first4 = D. | last5 = Schrimpf | first5 = D. | last6 = Koelsche | first6 = C. | last7 = Hovestadt | first7 = V. | last8 = Bewerunge-Hudler | first8 = M. | last9 = Jones | first9 = DT. | title = Adult IDH wild type astrocytomas biologically and clinically resolve into other tumor entities. | journal = Acta Neuropathol | volume = 130 | issue = 3 | pages = 407-17 | month = Sep | year = 2015 | doi = 10.1007/s00401-015-1454-8 | PMID = 26087904 }}</ref> | *The existence of diffuse astrocytoma, IDH wildtype is challenged.<ref>{{Cite journal | last1 = Reuss | first1 = DE. | last2 = Kratz | first2 = A. | last3 = Sahm | first3 = F. | last4 = Capper | first4 = D. | last5 = Schrimpf | first5 = D. | last6 = Koelsche | first6 = C. | last7 = Hovestadt | first7 = V. | last8 = Bewerunge-Hudler | first8 = M. | last9 = Jones | first9 = DT. | title = Adult IDH wild type astrocytomas biologically and clinically resolve into other tumor entities. | journal = Acta Neuropathol | volume = 130 | issue = 3 | pages = 407-17 | month = Sep | year = 2015 | doi = 10.1007/s00401-015-1454-8 | PMID = 26087904 }}</ref> | ||
**Most cases show genetic alterations compatible with glioblastoma.<ref>{{Cite journal | last1 = Hasselblatt | first1 = M. | last2 = Jaber | first2 = M. | last3 = Reuss | first3 = D. | last4 = Grauer | first4 = O. | last5 = Bibo | first5 = A. | last6 = Terwey | first6 = S. | last7 = Schick | first7 = U. | last8 = Ebel | first8 = H. | last9 = Niederstadt | first9 = T. | title = Diffuse Astrocytoma, IDH-Wildtype: A Dissolving Diagnosis. | journal = J Neuropathol Exp Neurol | volume = | issue = | pages = | month = Feb | year = 2018 | doi = 10.1093/jnen/nly012 | PMID = 29444314 }}</ref> | **Most adult cases show genetic alterations compatible with glioblastoma.<ref>{{Cite journal | last1 = Hasselblatt | first1 = M. | last2 = Jaber | first2 = M. | last3 = Reuss | first3 = D. | last4 = Grauer | first4 = O. | last5 = Bibo | first5 = A. | last6 = Terwey | first6 = S. | last7 = Schick | first7 = U. | last8 = Ebel | first8 = H. | last9 = Niederstadt | first9 = T. | title = Diffuse Astrocytoma, IDH-Wildtype: A Dissolving Diagnosis. | journal = J Neuropathol Exp Neurol | volume = | issue = | pages = | month = Feb | year = 2018 | doi = 10.1093/jnen/nly012 | PMID = 29444314 }}</ref> | ||
**Molecular upgrade according to cIMPACT-NOW Update 3 consensus (one of these is sufficient):<ref>{{Cite journal | last1 = Brat | first1 = DJ. | last2 = Aldape | first2 = K. | last3 = Colman | first3 = H. | last4 = Holland | first4 = EC. | last5 = Louis | first5 = DN. | last6 = Jenkins | first6 = RB. | last7 = Kleinschmidt-DeMasters | first7 = BK. | last8 = Perry | first8 = A. | last9 = Reifenberger | first9 = G. | title = cIMPACT-NOW update 3: recommended diagnostic criteria for "Diffuse astrocytic glioma, IDH-wildtype, with molecular features of glioblastoma, WHO grade IV". | journal = Acta Neuropathol | volume = 136 | issue = 5 | pages = 805-810 | month = Nov | year = 2018 | doi = 10.1007/s00401-018-1913-0 | PMID = 30259105 }}</ref> | **Molecular upgrade according to cIMPACT-NOW Update 3 consensus (one of these is sufficient):<ref>{{Cite journal | last1 = Brat | first1 = DJ. | last2 = Aldape | first2 = K. | last3 = Colman | first3 = H. | last4 = Holland | first4 = EC. | last5 = Louis | first5 = DN. | last6 = Jenkins | first6 = RB. | last7 = Kleinschmidt-DeMasters | first7 = BK. | last8 = Perry | first8 = A. | last9 = Reifenberger | first9 = G. | title = cIMPACT-NOW update 3: recommended diagnostic criteria for "Diffuse astrocytic glioma, IDH-wildtype, with molecular features of glioblastoma, WHO grade IV". | journal = Acta Neuropathol | volume = 136 | issue = 5 | pages = 805-810 | month = Nov | year = 2018 | doi = 10.1007/s00401-018-1913-0 | PMID = 30259105 }}</ref> | ||
***EGFR amplification | ***EGFR amplification | ||
***Combined whole chromosome 7 gain and whole chromosome 10 loss (+ 7/− 10) | ***Combined whole chromosome 7 gain and whole chromosome 10 loss (+ 7/− 10) | ||
***TERT promoter mutation | ***TERT promoter mutation | ||
**Suggested Sign-out: | **Suggested Sign-out: <pre> Diffuse astrocytic glioma, IDH-wildtype, with molecular features of glioblastoma, WHO grade IV</pre> | ||
<pre> | **WHO grade II diffuse gliomas IDH-wt/H3-wt in children and adolescents have an indolent clinical behavior and rare anaplastic progression. | ||
***Most tumors show a BRAFV600E mutation, an FGFR alteration, or a MYB or MYBL1 rearrangement. | |||
</pre> | |||
==DDx== | ==DDx== | ||