Lightning veteran wing Ryan Callahan underwent an emergency appendectomy Monday night, and is return to the team is undetermined.
Callahan, 30, will obviously miss Tuesday's Game 6 against the Canadiens, a big blow to Tampa Bay as it tries to close out its best of seven Eastern Conference semifinal. Callahan didn't practice Monday, with the team saying he first felt abdominal pain during the afternoon. He was admitted to Tampa General Hospital, where he was diagnosed with acute appendicitis. Callahan was in the emergency room by 9 p.m. and out by 10 p.m., and in stable condition, team spokesman Bill Wickett said.