While it's unclear where Wembanyama's clot is located in the shoulder, deep vein thrombosis (DVT) occurs when a blood clot (thrombus) forms in one or more of the deep veins in the body:

The San Antonio Spurs announced Thursday that Victor Wembanyama is expected to miss the rest of the season for deep vein thrombosis in his right shoulder.

Victor Wembanyama, the San Antonio Spurs' 7-foot 3-inch phenom, was sidelined after doctors discovered a dangerous blood clot in his right shoulder, the league announced Thursday. The 21-year-old French standout,

The second-year Spurs phenom was diagnosed with deep vein thrombosis after returning to San Antonio from this past weekend’s All-Star Game.