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Just hours after Serena Williams was all smiles at the Elton John AIDS Foundation and Vanity Fair Oscars parties, the tennis star was rushed to Cedars-Sinai hospital in L.A. to treat a pulmonary embolism.

Yesterday, Williams “underwent emergency treatment at Cedars for a hematoma she suffered as a result of treatment for a more critical situation,” her rep said in a statement, adding, ”Last week, Serena suffered from a pulmonary embolism [a blood clot in the lungs] which was discovered upon her return to L.A. She had been in New York for doctor appointments for the ongoing issues with her foot.”

Williams’ rep added, “Doctors are continuing to monitor her situation closely to avoid additional complications.”

Gossip Cop will update when more information becomes available.

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Elton John was scheduled to perform last night with Billy Joel at the Oracle Arena in Oakland, California, but the concert was scrapped a few days ago because John was still battling an E. coli bacterial infection and the flu. 

Today, Gossip Cop checked in with both his rep and Joel’s spokeswoman, who told us that John is “feeling much better” and has “recovered.” 

So the question is, though he had to cancel a number of performances because of illness, including last night’s, will John still be at his Elton John AIDS Foundation’s “An Enduring Vision” event tomorrow night?

Good news. The musician’s rep confirmed to Gossip Cop that John will definitely be at the fundraiser in New York, which will be hosted by Anderson Cooper, and where President Bill Clinton and Sharon Stone are set to be honored.

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