(pr-inside.com) - Supermodel Naomi Campbell has been released from hospital in Sao Paolo, Brazil after undergoing surgery to have a cyst removed.The 37-year-old checked into the Sirio-Libanes Hospital, where she was treated by gynaecologist Jose Aristodemo Pinotti and infection specialist Dr.David Uip, on Sunday (24Feb08).It was later revealed she underwent surgery to remove a cyst.On Friday (29Feb08) Dr. Pinotti revealed Campbell had been allowed to leave the clinic after a five-day stay, saying only, "She is perfectly well." The catwalk queen has been in Brazil for several weeks after attending the Rio De Janeiro Carnival, reportedly as the guest of Brazilian billionaire Marcus Elias, reports PageSix.com.