MILAN - Inter Milan defender Maicon sustained a serious leg injury playing for Brazil at the weekend, the Serie A club's doctor said on Tuesday. The right back, one of Inter's top players this term as they close in on a fourth straight Serie A title, will be out for several weeks with Italian media speculating his season could be over. "I spoke with Brazil's chief doctor during the night. Unfortunately, he confirmed that Maicon has a serious injury... in his right leg," Inter doctor Franco Combi told the official club website (www.inter.it). "We agreed Brazil's doctor will take care of the player until his return to Italy in about 10 days' time. When he returns to Milan we will do further tests to see how the injury is, and then proceed with a rehabilitation programme." Maicon was injured in the first half of Brazil's 1-1 World Cup qualifying draw in Ecuador on Sunday. His absence will be a big blow to Inter, who lead Serie A by seven points with nine games left. The powerful 27-year-old has been an imposing presence in the back four this season and his rampaging runs down the right have created countless chances for the Serie A champions and striker Zlatan Ibrahimovic in particular. Young left back Davide Santon may switch to the right for Sunday's league game at Udinese with Maxwell filling in on the left after being overlooked by coach Jose Mourinho for months. Midfielder Javier Zanetti can also play right back.