Hepatitis C: a hepatologist's approach to an infectious disease.

The evaluation and management of hepatitis C differ from those of other infectious diseases in important ways. In this review, the roles of liver biopsy, virus load determination, and genotyping in the pretreatment evaluation and monitoring of patients with hepatitis C are discussed from a hepatologist's perspective.

Medical and economic considerations in using a new contrast medium.

In deciding to use a new intravascular contrast medium, the considerations should be patient safety, Imaging efficacy, and cost. Balancing these factors, use can be estimated. With the new low-osmolality contrast media, particularly the nonionic media, the expected increased patient safety must be balanced against the much higher cost.