Lipoprotein (a) in patients on hemodialysis.

Lipoprotein (a) [Lp(a)] may produce thrombogenic effects by modulating the fibrinolytic system. Elevated levels of Lp(a) have also been associated with an increased risk for atherosclerosis. Because atherosclerosis is more prevalent among patients with end-stage renal disease, the role of Lp(a) among patients on hemodialysis is analyzed.

Mixed cryoglobulinaemia and B-cell lymphoma in the absence of hepatitis C virus infection.

Literary data favouring hepatitis C virus infection as an important aetiological agent in mixed cryoglobulinaemia and mixed cryoglobulinaemia-associated lymphoma have been reported. Hepatitis C virus infection does not explain, however, all cases. A case of hepatitic C negative mixed cryoglobulinaemia with B-cell lymphoma is presented and the possible role of hepatitis C virus in the aetiology of lymphoproliferative disorders and the geographical differences reported in the literature are discussed.