Partial splenic embolization as pretreatment for antiviral therapy in hepatitis C virus infection.

Chronic hepatitis C virus infection is frequently complicated by cirrhosis and hypersplenism, which together with several other factors, such as reduced thrombopoietin synthesis in the liver, cause cytopenia. The antiviral combination therapy with pegylated interferon and ribavirin itself is impaired by haematological toxicity. Partial splenic embolization (PSE) by the injection of microspheres via a catheter comprising approximately 30-70% of the splenic parenchyma is now a safe method, which significantly reduces the cytopenia induced by hypersplenism, especially thrombocytopenia. The effect is long lasting up to 20 years and has been documented in a variety of disorders. PSE is now carefully described in a combination modality as a pretreatment to reduce cytopenia in hepatitis C virus-induced cirrhosis patients with hypersplenism, making antiviral therapy possible per se at higher dosages with a sustained duration.