Hepatocellular-Cholestatic Pattern of Liver Injury in a Patient With Infectious Mononucleosis.

Hepatic dysfunction in the setting of infectious mononucleosis has been documented in the literature. However, clinically significant jaundice and direct hyperbilirubinemia are rarely associated with this infection. In the instance of undetermined underlying diagnosis and hepatic enzyme derangement, this may pose a diagnostic challenge. Furthermore, several diagnostic tests may be indicated, which could potentially increase resource consumption in any hospital setting. This case report aims to remind physicians that infectious mononucleosis may be a cause of hyperbilirubinemia, which does not usually require further complex testing other than monitoring and supportive therapy.