NBA star Victor Wembanyama diagnosed with deep vein thrombosis ...

NBA star Victor Wembanyama was diagnosed with deep vein thrombosis in his right shoulder and is expected to miss the remainder of the season, the San Antonio Spurs announced Thursday. The team said doctors discovered the blood clot condition after Wembanyama returned to Texas following the All-Star break in San Francisco.

The 7-foot-3-inch Wembanyama, who hails from France, was the NBA Rookie of the Year last season, and was enjoying an incredible statistical season this year before the diagnosis. He is averaging 24.3 points, 11 rebounds, 3.8 blocks and 3.7 assists per game.

The Spurs are currenlty contending for a playoff spot in the Western Conference and Wembanyama is the key reason why. 

"It's a massive blow for Wembanyama and the Spurs, who were putting together a strong season after winning just 22 games a season ago," writes CBS Sports' Jasmyn Wimbish. "They've surpassed that win total with 23, and were within range of getting one of the final play-in spots for the playoffs in the West. But with Wembanyama out for the rest of the season, those chances dwindle significantly."

What is deep vein thrombosis?

Deep vein thrombosis occurs when a blood clot forms in one of the deep veins in the body, according to the Mayo Clinic. While it can lead to leg pain or swelling, there are sometimes no noticeable symptoms.

Deep vein thrombosis is typically seen in lower legs, thighs or the pelvis, but can also occur in other parts of the body, the Cleveland Clinic says. It can arise due to certain medical conditions, or as a result of not moving for a while — like when traveling a long distance or when on bed rest.

"Deep vein thrombosis can be serious because blood clots in the veins can break loose," the Mayo Clinic says. "The clots can then travel through the bloodstream and get stuck in the lungs, blocking blood flow."

A source with the Spurs told ESPN Thursday that the team is optimistic that the 21-year-old Wembanyama will make a full recovery by the start of next season.

The team said that updates on Wembanyama's condition would be provided as appropriate.

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