HAEM5:Systemic EBV-positive T-cell lymphoma of childhood: Difference between revisions
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==Gene Rearrangements== | ==Gene Rearrangements== | ||
Monoclonal T-cell receptor gene rearrangements in most cases.<ref name=":1" /><ref name=":7">{{Cite journal|last=Coffey|first=Amy M.|last2=Lewis|first2=Annisa|last3=Marcogliese|first3=Andrea N.|last4=Elghetany|first4=M. Tarek|last5=Punia|first5=Jyotinder N.|last6=Chang|first6=Chung-Che|last7=Allen|first7=Carl E.|last8=McClain|first8=Kenneth L.|last9=Gaikwad|first9=Amos S.|date=2019-08|title=A clinicopathologic study of the spectrum of systemic forms of EBV-associated T-cell lymphoproliferative disorders of childhood: A single tertiary care pediatric institution experience in North America|url=https://pubmed.ncbi.nlm.nih.gov/31099136|journal=Pediatric Blood & Cancer|volume=66|issue=8|pages=e27798|doi=10.1002/pbc.27798|issn=1545-5017|pmid=31099136}}</ref> T-cell clonality can also be detected in EBV-associated HLH and other EBV-associated disorders.<ref name=":10">{{Cite journal|last=Dojcinov|first=Stefan D.|last2=Quintanilla-Martinez|first2=Leticia|date=2023-01-04|title=How I Diagnose EBV-Positive B- and T-Cell Lymphoproliferative Disorders|url=https://pubmed.ncbi.nlm.nih.gov/36214507|journal=American Journal of Clinical Pathology|volume=159|issue=1|pages=14–33|doi=10.1093/ajcp/aqac105|issn=1943-7722|pmid=36214507}}</ref> | |||
Monoclonal T-cell receptor gene rearrangements in most cases.<ref name=":1" /> | |||
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==Individual Region Genomic Gain/Loss/LOH== | ==Individual Region Genomic Gain/Loss/LOH== | ||
* Cytogenetic abnormalities found in 30-35% of cases of SEBVTCL of childhood. The WHO 5th edition and International Consensus Classification note that cytogenetic abnormalities favor a diagnosis of SEBVTCL over EBV-positive nonfamilial HLH.<ref>Arber DA, Borowitz MJ, Cook JR, et al. ''The International Consensus Classification of Myeloid and Lymphoid Neoplasms''.; 2025.</ref> <ref name=":3" /><ref name=":6" /><ref name=":10" /> | |||
Put your text here and fill in the table <span style="color:#0070C0">(''Instructions: Includes aberrations not involving gene rearrangements. Details on clinical significance such as prognosis and other important information can be provided in the notes section. Can refer to CGC workgroup tables as linked on the homepage if applicable. Please include references throughout the table. Do not delete the table.'') </span> | * No consistent chromosomal aberrations described. | ||
** Reported cytogenetic findings include: complex karyotype with 7q deletion<ref name=":7" /><br /> Put your text here and fill in the table <span style="color:#0070C0">(''Instructions: Includes aberrations not involving gene rearrangements. Details on clinical significance such as prognosis and other important information can be provided in the notes section. Can refer to CGC workgroup tables as linked on the homepage if applicable. Please include references throughout the table. Do not delete the table.'') </span> | |||
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==Additional Information== | ==Additional Information== | ||
* Typically occurs following primary acute EBV infection; though, it may occur in patients with a history of systemic chronic active EBV (CAEBV)<ref name=":10" /> | |||
Differential Diagnosis<ref>{{Cite journal|last=Montes-Mojarro|first=Ivonne A.|last2=Kim|first2=Wook Youn|last3=Fend|first3=Falko|last4=Quintanilla-Martinez|first4=Leticia|date=2020-01|title=Epstein - Barr virus positive T and NK-cell lymphoproliferations: Morphological features and differential diagnosis|url=https://pubmed.ncbi.nlm.nih.gov/31889602|journal=Seminars in Diagnostic Pathology|volume=37|issue=1|pages=32–46|doi=10.1053/j.semdp.2019.12.004|issn=0740-2570|pmid=31889602}}</ref><ref>{{Cite journal|last=Cohen|first=Jeffrey I.|last2=Iwatsuki|first2=Keiji|last3=Ko|first3=Young-Hyeh|last4=Kimura|first4=Hiroshi|last5=Manoli|first5=Irini|last6=Ohshima|first6=Koichi|last7=Pittaluga|first7=Stefania|last8=Quintanilla-Martinez|first8=Leticia|last9=Jaffe|first9=Elaine S.|date=04 2020|title=Epstein-Barr virus NK and T cell lymphoproliferative disease: report of a 2018 international meeting|url=https://pubmed.ncbi.nlm.nih.gov/31833428|journal=Leukemia & Lymphoma|volume=61|issue=4|pages=808–819|doi=10.1080/10428194.2019.1699080|issn=1029-2403|pmid=31833428}}</ref> | Differential Diagnosis<ref>{{Cite journal|last=Montes-Mojarro|first=Ivonne A.|last2=Kim|first2=Wook Youn|last3=Fend|first3=Falko|last4=Quintanilla-Martinez|first4=Leticia|date=2020-01|title=Epstein - Barr virus positive T and NK-cell lymphoproliferations: Morphological features and differential diagnosis|url=https://pubmed.ncbi.nlm.nih.gov/31889602|journal=Seminars in Diagnostic Pathology|volume=37|issue=1|pages=32–46|doi=10.1053/j.semdp.2019.12.004|issn=0740-2570|pmid=31889602}}</ref><ref>{{Cite journal|last=Cohen|first=Jeffrey I.|last2=Iwatsuki|first2=Keiji|last3=Ko|first3=Young-Hyeh|last4=Kimura|first4=Hiroshi|last5=Manoli|first5=Irini|last6=Ohshima|first6=Koichi|last7=Pittaluga|first7=Stefania|last8=Quintanilla-Martinez|first8=Leticia|last9=Jaffe|first9=Elaine S.|date=04 2020|title=Epstein-Barr virus NK and T cell lymphoproliferative disease: report of a 2018 international meeting|url=https://pubmed.ncbi.nlm.nih.gov/31833428|journal=Leukemia & Lymphoma|volume=61|issue=4|pages=808–819|doi=10.1080/10428194.2019.1699080|issn=1029-2403|pmid=31833428}}</ref> | ||