ALK-positive large B-cell lymphoma

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ALK-positive large B-cell lymphoma

ORPHA:364043Disease

Also called ALK+ LBCL · ALK+ large B-cell lymphoma

What it is

A very rare variant of diffuse large B-cell lymphoma (DLBCL) mainly affecting middle-aged immunocompetent men and characterized by a consistent primary involvement of lymph nodes (mainly in the cervical and mediastinum lymph nodes) and with infrequent extra nodal involvement of the bone marrow and other extra-nodal sites (head and neck region, liver, spleen, and gastrointestinal tract). It has an aggressive disease course, and is associated with a poor prognosis.

Key facts

Inheritance
Multigenic/multifactorial, Not applicable
Classified as
Disease

Recorded for the broader condition

Prevalence
1-5 / 10 000 (Europe)Diffuse large B-cell lymphoma

Orphanet records these for the broader condition rather than for this specific form. They are a starting point, not a figure for this subtype — subtypes often differ, and some are defined by being rarer than the condition they sit under.

Gene

ALKPart of a fusion gene

ICD-10 codes

C83.3filed under a broader ICD-10 category — shared with 9 other rare diseases

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Cross-references

MONDO 0018225UMLS C1333294

Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.

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