2A90.5

ICD-11 MMS 2026-01

Adult T-cell lymphoma or leukaemia, human T-cell lymphotropic virus type 1-associated

Description

A peripheral (mature) T-cell neoplasm linked to the human T-cell leukaemia virus type 1 (HTLV-1). Adult T-cell leukaemia/lymphoma is endemic in several regions of the world, in particular Japan, the Caribbean, and parts of Central Africa.

Index terms

  • Adult T-cell lymphoma or leukaemia, human T-cell lymphotropic virus type 1-associated
  • adult T-cell lymphoma or leukaemia (HTLV-1-associated) without mention of remission
  • adult t cell leukaemia lymphoma
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  • adult t-cell leukaemia
  • adult t-cell leukaemia or lymphoma (HTLV-1 positive)
  • adult t-cell leukaemia or lymphoma HTLV-1 - [human t-cell lymphotropic virus type 1 positive]
  • adult t-cell lymphoma
  • adult t-cell lymphoma or leukaemia (HTLV-1-associated), NOS
  • cortical T ALL
  • pre-T ALL
  • precursor t-cell lymphoblastic leukaemia
  • pro-T ALL
  • t-cell acute lymphoblastic leukaemia
  • Adult T-cell lymphoma or leukaemia, human T-cell lymphotropic virus type 1-associated in complete remission
  • Acute variant of adult T-cell lymphoma or leukaemia
  • Chronic variant of adult T-cell lymphoma or leukaemia
  • Lymphomatoid variant of adult T-cell lymphoma or leukaemia
  • Smouldering variant of adult T-cell lymphoma or leukaemia

Exclusions from above levels

  • 2E03 – Malignant neoplasm metastasis in bone or bone marrow
  • http://id.who.int/icd/entity/501778925 – Malignant neoplasm metastasis in lymph nodes
  • http://id.who.int/icd/entity/97145147 – Malignant neoplasm metastasis in thymus gland

Sibling codes

  • 2A90.0 – T-cell prolymphocytic leukaemia
  • 2A90.1 – T-cell large granular lymphocytic leukaemia
  • 2A90.2 – Chronic lymphoproliferative disorders of NK-cells
  • 2A90.3 – Aggressive NK cell leukaemia
  • 2A90.4 – Systemic Epstein-Barr Virus-positive T-cell lymphoma of childhood
  • 2A90.6 – Extranodal NK/T-cell lymphoma, nasal type
  • 2A90.7 – Enteropathy associated T-cell lymphoma
  • 2A90.8 – Hepatosplenic T-cell lymphoma
  • 2A90.9 – Angioimmunoblastic T-cell lymphoma
  • 2A90.A – Anaplastic large cell lymphoma, ALK-positive
  • 2A90.B – Anaplastic large cell lymphoma, ALK-negative
  • 2A90.C – Peripheral T-cell lymphoma, not otherwise specified

Foundation entity

Adult T-cell lymphoma or leukaemia, human T-cell lymphotropic virus type 1-associated – http://id.who.int/icd/entity/1638811270

Allowed postcoordination axes

Part of: 2A90: Mature T-cell lymphoma, specified types, nodal or systemic › 02: Neoplasms