Serena Williams recently said that she doesn't believe in luck, but if she did, she would describe hers as "bad" and "horrible." That works for me. Williams is currently recovering in a Cedars-Sinai Medical Center in Los Angeles, after receiving emergency treatment for a hematoma that was preceded by a pulmonary embolism. Williams' doctors have not disclosed the cause of the embolism, and it is likely that they will never know for sure what brought it about. However, the surgeries performed on Williams for her foot laceration injury--and the subsequent long-term use of a cast--would very likely be related to the development of a pulmonary embolism.
Williams will probably have to wait a while before she can take a lengthy airplane flight, but--with proper precautions--individuals who are treated for a pulmonary embolism can continue to fly.
Women Who Serve will deliver updates as soon as they are available. In the meantime, I will pass on the words of Pam Shriver: "I think the challenge to come back from this is in her character, it's right up her alley."