Pittsburgh Penguins goaltender Tomas Vokoun underwent a procedure today to dissolve a blood clot in his pelvis and will be out indefinitely.

Vokoun left the ice at practice this morning at CONSOL Energy Center after noticing swelling in his thigh. He was taken to the emergency room, where doctors diagnosed the blood clot.

“The most important thing right now is Tomas’ health and well-being,” Penguins General Manager Ray Shero said. “The clot was dissolved by the procedure, and the doctors tell us that he will remain in the hospital for several days. We will continue to monitor his progress after that.”

Dr. Christopher Harner, the Penguins’ team physician, said there was no injury that led to the clot.

Vokoun, 37, played 20 regular season games for the Penguins in 2012-13, going 13-4 with a 2.45 goals-against average. He appeared in 11 playoff games and was 6-5 with a 2.10 GAA.

The native of Karlovy Vary in the Czech Republic has played 15 NHL seasons with Montreal, Nashville, Florida, Washington and the Penguins. He has twice represented the Czech Republic in the Olympics.

The Penguins currently have two goaltenders on their roster – Marc-Andre Fleury and Jeff Zatkoff. A third goaltender, Eric Hartzell, recently was sent to the Penguins’ Wilkes-Barre/Scranton affiliate in the American Hockey League.