Castleman's disease-associated neuropathy: no evidence of human herpesvirus type 8 infection.

Castleman's disease (CD) is a rare lymphoproliferative disorder that may be associated with a neuropathy. In a recent report, the presence of human herpesvirus type 8 (HHV-8) DNA sequences were detected in an HIV-negative patient with polyneuropathy, organomegaly, endocrinopathy, M-protein and skin changes (POEMS) associated with the multicentric hyaline vascular variant of CD. It was proposed that the presence of these sequences may have a role in the pathophysiology of the neuropathy. We describe an HIV-negative woman with the multicentric plasma cell form of CD who presented with a disabling neuropathy. In addition to a severe demyelinating polyneuropathy, she had some of the other features of POEMS including an IgA lambda gammopathy and lymphadenopathy. We were unable to detect the presence of either HHV-8 DNA or proteins in this patient. The significance of our results and the relationship between CD, POEMS and neuropathy are discussed.