ICD-11 classes
03 Diseases of the blood or blood-forming organs
Neoplasms of haematopoietic or lymphoid tissues
Mature B-cell neoplasms
2A81 — Diffuse large B-cell lymphomas
2A81.A — Primary cutaneous diffuse large B-cell lymphoma, leg type
ICD-11 2A81.A — Primary cutaneous diffuse large B-cell lymphoma, leg type
An aggressive primary cutaneous B-cell lymphoma, usually involving the lower leg. It is composed of a generally monotonous proliferation of immunoblasts, or less frequently centroblasts, with few admixed reactive cells. This type of lymphoma occurs most often in the elderly who present with rapidly growing tumours, usually on one or both legs. Dissemination to extracutaneous sites is frequent.
The diagnosis includes nothing.
The diagnosis excludes nothing.
It has no clarifying diagnoses.
The diagnosis is coded elsewhere: