Diagnosis of Waldenström macroglobulinemia.

Waldenström macroglobulinemia is a rare disorder affecting about 1400 people annually in the United States. This case report reviews from a primary care provider's perspective the initial presentation of a patient who complained of fatigue and dizziness that ultimately led to hospital admission with a diagnosis of Waldenström macroglobulinemia. The referral to hematology/oncology prompting the bone marrow biopsy that led to the diagnosis highlights the important role of the primary care provider in the initial workup, coordination among specialists, and overall management of patients with rare disorders.