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B symptoms - Wikipedia

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(Redirected from B-symptoms)

B symptoms are a set of symptoms, namely fever, night sweats, and unintentional weight loss, that can be associated with both Hodgkin lymphoma and non-Hodgkin lymphoma. These symptoms are not specific to lymphomas, especially each one considered individually, and even as a trio they are not pathognomonic for lymphomas, but the presence of the trio is sensitive enough for lymphomas to warrant diagnostic investigation and differential diagnosis. The presence or absence of B symptoms has prognostic significance in lymphomas and is reflected in their staging.

Description and nomenclature

B symptoms are so called because Ann Arbor staging of lymphomas includes both a number (I–IV) and a letter (A or B).^[1] "A" indicates the absence of systemic symptoms, while "B" indicates their presence.

B symptoms include:

Fever greater than 38 °C. Pel–Ebstein fever, the classic intermittent fever associated with Hodgkin disease, occurs at variable intervals of days to weeks and lasts for 1–2 weeks before resolving. However, fever associated with lymphoma can follow virtually any pattern.
Drenching sweats, especially at night.
Unintentional weight loss of >10% of normal body weight over a period of 6 months or less.

Prognostic importance

The presence of B symptoms is a marker for more advanced disease with systemic, rather than merely local, involvement. B symptoms are a clear negative prognostic factor in Hodgkin lymphoma.^[2] The relevance of B symptoms in non-Hodgkin lymphoma is less clear, although B symptoms tend to correlate with disease that is either more widespread or of a higher histologic grade.^[3]

Relative importance of specific B symptoms

It has been suggested that, in Hodgkin lymphoma, fever and weight loss are much more prognostically significant than night sweats. In one series of patients with early-stage Hodgkin disease, the presence or absence of night sweats had no impact on cure rates and outcome. However, fever and weight loss had a pronounced negative impact on cure and survival rates, regardless of treatment modality.^[4]

References

^ Carbone PP, Kaplan HS, Musshoff K, Smithers DW, Tubiana M (November 1971). "Report of the Committee on Hodgkin's Disease Staging Classification". Cancer Res. 31 (11): 1860–1. PMID 5121694.
^ Reevaluation of prognostic significance of symptoms in Hodgkin's disease. Gobbi PG; Cavalli C; Gendarini A; Crema A; Ricevuti G; Federico M; Di Prisco U; Ascari E. Cancer 1985 Dec 15;56(12):2874–80.
^ Malignant lymphoma: the histology and staging of 473 patients at the National Cancer Institute. Anderson T; Chabner BA; Young RC; Berard CW; Garvin AJ; Simon RM; DeVita VT Jr. Cancer 1982 Dec 15;50(12):2699–707.
^ Stage I to IIB Hodgkin's disease: the combined experience at Stanford University and the Joint Center for Radiation Therapy. Crnkovich MJ; Leopold K; Hoppe RT; Mauch PM. J Clin Oncol 1987 Jul;5(7):1041–9.

Leukaemias, lymphomas and related disease

B cell
(lymphoma,
leukemia)
(most CD19

CD20)

By
development/
marker

TdT+	ALL (Precursor B acute lymphoblastic leukemia/lymphoma)
CD5+	naive B cell (CLL/SLL) mantle zone (Mantle cell)
CD22+	Prolymphocytic CD11c+ (Hairy cell leukemia)
CD79a+	germinal center/follicular B cell (Follicular Burkitt's GCB DLBCL Primary cutaneous follicle center lymphoma) Primary mediastinal B-cell lymphoma marginal zone/marginal zone B-cell (Splenic marginal zone MALT Nodal marginal zone Primary cutaneous marginal zone lymphoma)
RS (CD15+, CD30+)	Classic Hodgkin lymphoma (Nodular sclerosis) CD20+ (Nodular lymphocyte predominant Hodgkin lymphoma)
PCDs/PP (CD38+/CD138+)	see immunoproliferative immunoglobulin disorders

By infection

Cutaneous

T/NK

T cell
(lymphoma,
leukemia)
(most CD3

CD4
CD8)

By
development/
marker

TdT+: ALL (Precursor T acute lymphoblastic leukemia/lymphoma)

prolymphocyte (Prolymphocytic)

Cutaneous

MF+variants	indolent: Mycosis fungoides Pagetoid reticulosis Granulomatous slack skin aggressive: Sézary disease Adult T-cell leukemia/lymphoma
Non-MF	CD30-: Non-mycosis fungoides CD30− cutaneous large T-cell lymphoma Pleomorphic T-cell lymphoma Lymphomatoid papulosis type B CD30+: CD30+ cutaneous T-cell lymphoma Secondary cutaneous CD30+ large-cell lymphoma Lymphomatoid papulosis type A

Other
peripheral

By infection

HTLV-1 (Adult T-cell leukemia/lymphoma)

NK cell/
(most CD56)

T or NK

Lymphoid+
myeloid

Acute biphenotypic leukaemia

Lymphocytosis

Cutaneous lymphoid hyperplasia

General

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