Waldenström's macroglobulinemia laboratory findings: Difference between revisions
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===Complete blood count=== | ===Complete blood count=== | ||
*[[Normocytic normochromic anemia]]: presents in 80% of patients<ref name="LAB">Waldenström | *[[Normocytic normochromic anemia]]: presents in 80% of patients<ref name="LAB"> {{cite journal |vauthors=García-Sanz R, Montoto S, Torrequebrada A, de Coca AG, Petit J, Sureda A, Rodríguez-García JA, Massó P, Pérez-Aliaga A, Monteagudo MD, Navarro I, Moreno G, Toledo C, Alonso A, Besses C, Besalduch J, Jarque I, Salama P, Rivas JA, Navarro B, Bladé J, Miguel JF |title=Waldenström macroglobulinaemia: presenting features and outcome in a series with 217 cases |journal=Br. J. Haematol. |volume=115 |issue=3 |pages=575–82 |year=2001 |pmid=11736938 |doi= |url=}} </ref> | ||
*[[Leukopenia]] | *[[Leukopenia]] | ||
*[[Thrombocytopenia]]: presents in 50% of patients with bleeding diathesis | *[[Thrombocytopenia]]: presents in 50% of patients with bleeding diathesis | ||
Revision as of 14:58, 20 November 2015
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Mirdula Sharma, MBBS [2]
Overview
Elevated Beta-2-microglobulin and abnormal coagulation studies are diagnostic of Waldenström's macroglobulinemia. [1]
Laboratory Findings
Complete blood count
- Normocytic normochromic anemia: presents in 80% of patients[1]
- Leukopenia
- Thrombocytopenia: presents in 50% of patients with bleeding diathesis
Peripheral smear
- Plasmacytoid lymphocytes
- Normocytic normochromic red blood cells
- Rouleaux formation
Chemistry lab tests
- Elevated Beta-2-microglobulin in proportion to tumor mass
- Elevated Lactate dehydrogenase
- Elevated Creatinine
- Electrolyte abnormalities:
- Hypercalcemia(4%)
- Elevated Erythrocyte Sedimentation Rate and uric acid
- Total protein levels
- Albumin-to-globulin ratio
- Rheumatoid factor, cryoglobulins, direct anti-globulin test, and cold agglutinin titre results can be positive.
- Coaglulation studies can be abnormal with elevated prothrombin time, activated partial thromboplastin time, and thrombin time.
Plasma viscosity
- Plasma viscosity should be measured in patients presenting with hyperviscosity syndrome whenever the monoclonal IgM protein spike is >4 g/dL.[2]
- The normal Plasma viscosity is 1.8 centipoise.
- Patients start presenting with hyperviscosity symptoms when viscosity >4 centipoise.
References
- ↑ 1.0 1.1 Waldenström's macroglobulinemia. Medscape (2015)http://emedicine.medscape.com/article/207097-workup#c7 Accessed on November 10, 2015
- ↑ Waldenström's macroglobulinemia. UpToDate (2015)http://www.uptodate.com/contents/epidemiology-pathogenesis-clinical-manifestations-and-diagnosis-of-waldenstrom-macroglobulinemia?source=machineLearning&search=Waldenström%27s+macroglobulinemia&selectedTitle=1%7E80§ionRank=3&anchor=H29#H18 Accessed on November 10, 2015