WASHINGTON — Tests revealed that Justice Ruth Bader Ginsburg has no additional cancer following her surgery in December, and no further treatment is needed, the Supreme Court announced Friday. “Justice Ginsburg will continue to work from home next week and will participate in the consideration and decision of the cases on the basis of the briefs and the transcripts of oral arguments,” court spokeswoman Kathleen Arberg said in a statement. “Her recovery from surgery is on track. Post-surgery evaluation indicates no evidence of remaining disease, and no further treatment is required.” Ginsburg had surgery Dec. 21 for two malignant nodules in her left lung, the 85-year-old justice’s third bout with cancer. The pulmonary lobectomy was performed at Memorial Sloan Kettering Cancer Center in New York. This week, for the first time since she joined the court in 1993, she missed a round of oral arguments. Ginsburg is the oldest member of the court, and the longest-serving member of the court’s four-member liberal wing. Her absence this week has raised questions about whether she would continue on the court. Her retirement would give President Donald Trump a chance to nominate a third justice.