Ruth Bader Ginsburg

In this July 31, 2014 file photo, Supreme Court Justice Ruth Bader Ginsburg stands in her Supreme Court chambers in Washington.   (AP Photo/Cliff Owen, File)

WASHINGTON (AP) — Justice Ruth Bader Ginsburg returned to Supreme Court bench Monday, questioning lawyers in her usual exacting fashion five days after she had a stent implanted to clear a blocked artery.

The 81-year-old Ginsburg actively participated in the give-and-take of the oral arguments.

She was hospitalized Tuesday after experiencing discomfort during an exercise session with her personal trainer at the court.

Doctors implanted the stent on Wednesday and she was sent home a day later.

Ginsburg is the oldest justice. She has been on the court since 1993 and has not missed a day, despite two earlier bouts with cancer in 1999 and 2009, and the death of her husband in 2010.

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