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  • Title: Patterns of clinical presentation, treatment, and outcome in patients with Waldenstrom's macroglobulinemia: a two-institution study.
    Author: Björkholm M, Johansson E, Papamichael D, Celsing F, Matthews J, Lister TA, Rohatiner AZ.
    Journal: Semin Oncol; 2003 Apr; 30(2):226-30. PubMed ID: 12720141.
    Abstract:
    Waldenstrom's macroglobulinemia (WM) is in the World Health Organization (WHO) classification considered to be a clinical syndrome rather than a specific pathologic diagnosis. The clinical manifestations associated with WM relate to direct tumor infiltration, hyperviscosity, and deposition of IgM in various tissues. The indications for and choice of treatment vary considerably and no generally accepted prognostic models exist. The clinical features, treatment, and prognosis of 72 patients with WM seen at one British (n = 36) and one Swedish (n = 36) academic center were therefore compared. Significantly more patients presented with a low albumin concentration (< v > 40 g/L, P <.001), anemia (hemoglobin < v > 120 g/L; P <.001), thrombocytopenia (< v > 150 x 10(9)/L; P <.05), hepatomegaly (P <.001), splenomegaly (P <.01), and lymphadenopathy (P <.01), at St Bartholomew's Hospital (SBH) in comparison to the Karolinska Hospital (KH). Fifty-six percent of SBH patients received chemotherapy immediately following diagnosis as compared to 14% at KH. The median overall survival of all patients was 6.3 years; 4.2 years and 11.0 years at SBH and KH, respectively (P <.001). In univariate analysis, anemia (hemoglobin < 120 g/L) and albumin < 35 g/L (but not <40 g/L) at diagnosis predicted a worse overall survival. The presence of hepatomegaly and/or splenomegaly and/or lymphadenopathy was significantly associated with anemia (P <.001) and hypoalbuminaemia (P <.001). The mean Morel score (including age, albumin, and cytopenias) of patients treated at SBH (2.6) was significantly higher than that of KH patients (1.6; P <.001). These findings illustrate the clinical heterogeneity of WM, most probably explained by differences in referral patterns, and in addition, indicate the need for establishing standard criteria for diagnosis, response to treatment, and prognostic features.
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