Detailed Instructions: In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
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 -- a ranking of all URLs that have more than one incoming inter-domain link (rank was determined by number of incoming links using Wide00012 inter domain links) 
  
  
  
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 - Top ranked pages (up to a max of 100) from every linked-to domain using the Wide00012 inter-domain navigational link graph ||||| Serena Williams could be off the court for a while.Williams entered emergency treatment to address a hematoma at Cedars-Sinai Medical Center in Los Angeles on Monday, according to the tennis star's spokeswoman."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' representative said in a statement Here's a quick medical cheat sheet on the condition.Clots materialize when blood traveling through the veins flows so slowly that it forms a barrier, also referred to as a deep vein thrombosis. In the case of pulmonary embolism, the clot can remain in the vein or travel up into the lungs.Here's a quick video to demonstrate:Often difficult to diagnose, more severe cases of pulmonary embolism include blue discoloration in the lips and fingers, collapse and circulatory instability caused by decreased blood flow.When identified early on, the prognosis for patients is overwhelmingly positive. Anticoagulants such as heparin are usually prescribed, and occasionally doctors will elect to surgically remove particularly severe clots.When left untreated, however, research shows that the condition is fatal in one out of 10 people.The frequency of pulmonary embolism is one or two cases for every thousand people in the U.S. That amounts to about 250,000 cases occurring annually.A few simple ways to lower the risk of pulmonary embolism include regular exercise and staying hydrated. |||||
A:
Tennis star Serena Williams is undergoing treatment for a pulmonary embolism she suffered last week, People reports. The blood clot in her lungs was discovered when she returned to LA, after receiving treatment in New York for an injured foot. She underwent emergency treatment Monday for a hematoma, says her rep, which she suffered as a result of the treatment for the embolism. Click here for more.