Toronto Raptors forward Patrick McCaw has left the NBA campus to receive treatment on his knee. 

Per an official statement from the team, McCaw has a "benign mass on the back of his left knee" that has caused discomfort since the Raptors' season restart on Aug. 1:

The Raptors noted there's no timetable for McCaw to return to the campus, and they will provide an update on his status "when appropriate."

Per the NBA's health protocols, players who leave the campus with permission must quarantine for four days upon returning as long as they undergo coronavirus testing for each day they are away and those tests come back negative. 

McCaw sat out all three of Toronto's scrimmages and hasn't appeared in any game since the team's season resumed on Aug. 1. His last appearance came on March 9, when he played more than 42 minutes in a 101-92 win over the Utah Jazz. 

In 37 games this season, McCaw is averaging 4.6 points, 2.3 rebounds and 2.1 assists per contest.