Justice Ruth Bader Ginsburg has completed radiation therapy for a cancerous tumor on her pancreas and there is no evidence of the disease remaining, according to the Supreme Court.

It is the fourth time that the 86-year-old justice has announced that she has been treated for cancer over the last two decades and follows lung cancer surgery in December that kept her away from the court for weeks. December’s surgery was her first illness-related absence from the court since being appointed by President Bill Clinton in 1993 and prompted even closer attention to her health.

As the court’s oldest member, Ginsburg has been asked questions for years about her health and retirement plans. She has also in recent years attracted particularly enthusiastic fans as the leader of the liberal wing of the court, which includes four members appointed by Democratic presidents and five by Republicans. Both liberals and conservatives watch her health closely because it’s understood the court would shift right for decades if President Donald Trump were to get the ability to nominate someone to replace her.