Bone marrow neoplastic

Bone marrow - plasma cell and lymphoid neoplasms

B lymphoblastic leukemia/lymphoma with recurrent genetic abnormalities

with hypodiploidy

Last author update: 1 February 2013
Last staff update: 21 March 2022

Copyright: 2001-2023,, Inc.

PubMed Search: B lymphoblastic leukemia lymphoma with hypodiploidy [title]

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Cite this page: Mihova D. with hypodiploidy. website. Accessed January 29th, 2023.
Definition / general
  • Defined as fewer than 45 or 46 chromosomes
  • 5% of B ALL
  • 1% in both children and adults
  • Most have 45 chromosomes, fewer chromosomes is rare
Prognostic factors
  • Poorer prognosis: near haploid and low hypodiploid groups compared to those with:
  • Poorest prognosis: near haploid 23 - 29 chromosomes which appear limited to childhood
  • Overall 50% survival at 8 years
Microscopic (histologic) description
  • No distinct morphology
Molecular / cytogenetics images

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Karyotype of severe

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