Williams had been in New York
for treatment for a foot injury. When she returned to L.A. doctors discovered the blood clot in her lungs.
Sunday night the tennis beauty was at Elton John AIDS Foundation Academy Awards Viewing Party according to People
magazine. By the next day she was on an operating table
when a hemotoma was discovered.
Her rep said, "Doctors are continuing to monitor her situation closely to avoid additional complications."
In July Williams
underwent surgery for her foot. She has yet to return to tennis.