Acquired von Willebrand's disease (AvWD), an adult-onset bleeding diathesis, has most commonly been found in patients with an underlying lymphoproliferative disease or monoclonal gammopathy. Other malignancies, autoimmune diseases, hypothyroidism, and drugs have also been associated with AvWD. We have included an illustrative case history of a patient with a bleeding diathesis consistent with AvWD and a monoclonal gammopathy who required emergent cardiac surgery. Our review of the literature determined that most cases of AvWD are due to a circulating antibody that combines with the high molecular weight multimers (
CASE HISTORY INTRODUCTIONA 55-year-old man presented with severe epistaxis reAcquired von Willebrand's disease (AvWD) is an unquiring nasal packing and balloon tamponade. The patient common bleeding disorder that has remained, until recomplained of exertional chest pain for the past 2 weeks; cently, both difficult to characterize pathophysiologically, he now noted dyspnea and chest pain at rest. He was and challenging to treat successfully. Acquired forms of found to have an hematocrit of 22% and an elevated PTT, von Willebrand's disease are usually encountered in and he was transfused to a hematocrit of 30% with relief of adults without a personal or family history of bleeding his resting pain. Stress thallium showed diffuse, reversible diatheses [1]. Laboratory examination demonstrates that perfusion defects in the anterior, apical, inferior, and septhe functional assay for von Willebrand factor (vWF), tal areas, while an echocardiogram showed normal sysristocetin cofactor activity (vWF:RiCo), is characteristitolic function. The patient was referred to the University cally low or nearly absent, while the antigen (vWF:Ag) of Maryland Medical Center for cardiac catheterization assay is low or normal [2]. Bleeding time is markedly and evaluation of his bleeding disorder. prolonged. Furthermore, electrophoresis of von WilleThe patient's past medical history and family history brand factor most commonly reveals a pattern similar to type II congenital von Willebrand's disease (vWD), with selective loss of high molecular weight multimers *Correspondence to: Henry M. Rinder, M.D., Department of Labora-(HMWM) [2,3]. In this paper, we discuss an illustrative tory Medicine, Yale University School of Medicine, New Haven, CT case and review the recent literature on AvWD, which 06520-8035. details the physiologic basic for this disease and the ratioReceived for publication 9 August 1996; Accepted 11 September 1996. nale for treatment options.ᮊ 1997 Wiley-Liss, Inc.