ICD-11 classes
03 Diseases of the blood or blood-forming organs
Neoplasms of haematopoietic or lymphoid tissues
Mature B-cell neoplasms
2A80 — Follicular lymphoma
ICD-11 2A80 — Follicular lymphoma
Follicular lymphoma (FL) is a neoplasm composed of follicle centre (germinal centre) B-cells (typically both centrocytes and centroblasts/large transformed cells), which usually has at least a partially follicular pattern. t(14; 18) with BCL2 rearrangement is frequently observed. If diffuse areas of any size comprised predominantly or entirely of blastic cells are present in any case of follicular lymphoma, a diagnosis of diffuse large B-cell lymphoma is also made. Lymphomas composed of centro cytes and centroblasts with an entirely diffuse pattern in the sampled tissue may be included in this category.
It includes 1 item.
- follicular lymphoma with or without diffuse areas
It excludes 1 item.
- Mature T-cell or NK-cell neoplasms (2A90-2B2Z)
Diagnosis with code 2A80 contains 9 clarifying diagnoses:
- 2A80.0 — Follicular lymphoma grade 1
- 2A80.1 — Follicular lymphoma grade 2
- 2A80.2 — Follicular lymphoma grade 3
- 2A80.3 — Primary cutaneous follicle centre lymphoma
- 2A80.4 — Paediatric type follicular lymphoma
- 2A80.5 — Follicular lymphoma in situ
- 2A80.6 — Follicular lymphoma of small intestine
- 2A80.Y — Other specified follicular lymphoma
- 2A80.Z — Follicular lymphoma, unspecified
The diagnosis is coded elsewhere:
- Mature B-cell neoplasms #1632
- Follicular lymphoma #1633