LeBron James admitted Brandon Ingram's deep venous thrombosis diagnosis was a reminder not to take opportunities for granted after the undermanned Los Angeles Lakers lost again on Saturday. James recorded a triple-double in 28 minutes on court, but the struggling Lakers were beaten for a fifth successive game, going down 120-107 to the Boston Celtics. Ingram was missing after tests on a sore right shoulder revealed the severity of his injury, with the 21-year-old expected to sit out the remainder of the season.