Charleson, who starred as Monica Quartermaine on 'General Hospital' and was the longest-tenured cast member on the soap opera, died on Jan. 12

People reports how the actress — who portrayed Monic Quartermaine on the popular series and who was the longest-tenured cast member — was confirmed by records from the Los Angeles Medical Examiner’s department to have died from “sequelae of blunt head trauma.”

A cause of death has been revealed for Leslie Charleson, who played cardiologist Monica Quartermaine on the ABC daytime drama General Hospital for nearly 50 years. Charleson died of sequelae of blunt head trauma,

General Hospital mainstay Leslie Charleson, who starred in over 2,000 episodes of the soap, died in January. But new documents show she may have been suffering from long-term effects of a head injury.