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Every dated change on the records linked to T-cell/histiocyte-rich large B-cell lymphoma, newest first: approvals and regulatory steps on its medicines, trials that reported, guideline versions, milestones, and when this page itself was checked. Dates come from the records; none is inferred. Orientation, not medical advice.
Both errors are common and they point in opposite directions. Called inflammatory, the lymphoma is missed, because the tumour cells are a small minority and the tissue looks reactive. Called nodular lymphocyte predominant Hodgkin lymphoma, an aggressive disease is treated as an indolent one. WHO-HAEM5 states that a clear distinction from the diffuse pattern of that disease may not be possible in some cases, and that small biopsies are the hardest. A generous biopsy, read by a haematopathologist, with the surrounding cells examined as carefully as the tumour cells, is the answer the classification gives.
WHO-HAEM5 tabulates six growth patterns of nodular lymphocyte predominant Hodgkin lymphoma and names the diffuse one after this disease; the International Consensus Classification renamed that disease a B-cell lymphoma partly on the strength of the relationship.