New York Rangers forward Chris Kreider has been diagnosed with a blood clot in his right arm and will be sidelined indefinitely, the team announced on Thursday.
Kreider exited after the first period of Wednesday's game against the Washington Capitals and did not return.
The 26-year-old has collected 11 goals and as many assists with 29 penalty minutes in 37 games this season for the Rangers.
Kreider has scored 100 goals and set up 104 others in 360 career games since being selected by New York with the 19th overall pick of the 2009 draft.
Also on Thursday, the Rangers recalled forward Vinni Lettieri from Hartford of the American Hockey League. Lettieri, 22, has recorded 12 goals, nine assists and 19 penalty minutes in 31 games with the Wolf Pack this season.