Precursor T-cell acute lymphoblastic leukemia

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A rare acute lymphoblastic leukemia characterized by a neoplasm of lymphoblasts committed to the T-cell lineage, involving bone marrow and blood. A value of >25% bone marrow blasts may be used to define leukemia (as opposed to lymphoma) in cases with the presence of a mass lesion in addition to bone marrow involvement. Patients typically present with leukocytosis, and frequently with a large mediastinal or other tissue mass. Lymphadenopathy and hepatosplenomegaly are common.


Precursor T-cell acute lymphocytic leukemia/lymphoma

Precursor T-cell acute lymphocytic leukemia

Precursor T-cell acute lymphoblastic leukemia/lymphoma


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Term information

database cross reference
  • ICD-10:C91.0 (- NTBT (ORPHA code's Narrower Term maps to a Broader Term). - Attributed (The ICD10 code is attributed by Orphanet).)
  • UMLS:C1961099 (E (Exact mapping: the two concepts are equivalent))
  • ICD-10:C91.0
  • UMLS:C1961099
has age of onset
has inheritance
  • ORPHA:99861
part of