Real Madrid's Portuguese star Cristiano Ronaldo will be out of action for at least another two weeks, the club said Thursday, after a doctor in Amsterdam examined his injured ankle.

It said new tests by his former doctor, Cornelius Nicolas Van Dijk, "confirmed the diagnosis given by the medical team of Real Madrid obtained after MRI and CT scans" on Tuesday.

Dr. van Dijk will reexamine him in another 15 days, Real said in a statement on its website.

Dutch physician van Dijk, who has also treated Ronaldo's team-mate Ruud van Nistelrooy and AC Milan striker Filippo Inzaghi, previously operated on the Portuguese winger in 2008.

Ronaldo, Real's record signing at 94 million euros, will definitely miss their Madrid derby meeting with city rivals Atletico on Saturday in the Primera Liga.

He will also be unavailable to play for Portugal in its World Cup qualifying matches against Bosnia on November 14 in Lisbon and on November in Zenica four days.

He initially injured his right ankle in Real's 3-0 Champions League victory over Marseille at the end of September and aggravated the problem while playing for Portugal on October 10.

Early diagnosis of the injury suggested he would be sidelined for between three and four weeks.

Ronaldo, who signed from Manchester United in the summer, is Real's top scorer with five goals in the league and four in the Champions League.