The Colorado Avalanche will be without left wing Tomas Fleischmann for the rest of the season after he was diagnosed with two blood clots, one in each of his lungs. The condition was discovered Thursday after Fleischmann experienced shortness of breath following the morning skate. Team physician Dr. David Mellman said the 26-year-old Fleischmann will be on blood thinners for several months and will be held out of action. "At the end of the day, fortunately this was discovered," Avalanche general manager Greg Sherman said before his team's 5-1 loss to Nashville on Thursday night. "He's a young man. This is a serious condition." Sherman added that Fleischmann isn't in the hospital, and he should be able to resume his career following treatment. Read more: http://sports.espn.go.com/nhl/news/story?id=6043065