Didier Drogba is sweating over a hernia operation that could put his chances of appearing at the World Cup in doubt.
The Ivory Coast striker has been nursing the problem since before the Africa Cup of Nations in January.
Drogba should be able to lead Chelsea's attack in the final few games of the season but the 32-year-old will have to go under the knife at some stage.
He told L'Equipe: 'I underwent surgery for a hernia problem six years ago, and today it is bothering me again.
'Just before the Africa Cup of Nations I got a knee to my kidney and the pain returned. I have felt pain ever since then and we can't go on like this for long.
'Do I need surgery? I don't know yet, but we have to do something. Before the World Cup? That is a good question and I don't have an answer.'
Drogba has 32 goals in all competitions as Chelsea sit at the top of the Premier League with four games to go. The Blues also have next month's FA Cup final against Portsmouth to look forward to.
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