Summary Benzema came off at half-time of Tuesday's 0-0 draw in the first leg against City.
MADRID (AFP) - Real Madrid striker Karim Benzema is a major doubt for the Spanish giants Champions League semi-final, second leg against Manchester City on Wednesday after Madrid confirmed he is suffering from a hamstring strain.
"Following tests carried out today on Karim Benzema in the Sanitas La Moraleja University Hospital, he has been diagnosed with a strained right hamstring," the club said in a statement on Thursday.
"His recovery will continue to be assessed."
Benzema came off at half-time of Tuesday s 0-0 draw in the first leg against City having also been forced off before the break in Saturday s 3-2 win at Rayo Vallecano.
Real refused to confirm how long the Frenchman will be sidelined, but he looks certain to miss Saturday s trip to Real Sociedad in La Liga in the hope that he can be fit for City s visit to the Santiago Bernabeu.
Madrid s attack could be thoroughly depleted as they aim to make a 14th European Cup final should three-time World Player of the Year Cristiano Ronaldo also not recover from a thigh strain for the second leg.
Ronaldo has missed Real s last two games and Spanish radio station COPE reported on Wednesday he will undergo stem cell treatment in a bid to be fit to face City.
Between them Ronaldo and Benzema have scored 74 goals in all competitions for Madrid this season.
