Rachel Rouillard (L) checks insurance forms before a craniosacral therapy session for her four-year-old son Will, following surgery on Will's back to remove recurring cysts caused by chronic cystic hygroma, in Rochester, New Hampshire April 16, 2010. Will's parents worry that without the health insurance overhaul he would certainly be refused health insurance as an adult due to his pre-existing condition. REUTERS/Brian Snyder (UNITED STATES - Tags: HEALTH POLITICS SOCIETY BUSINESS) 

Four-year-old Will Rouillard (C) stretches his arm during a craniosacral therapy session with physical therapist Don Ash (R) as his mother Rachel looks on, following surgery on Will's back to remove recurring cysts caused by chronic cystic hygroma, in Rochester, New Hampshire April 16, 2010. Will's parents worry that without the health insurance overhaul he would certainly be refused health insurance as an adult due to his pre-existing condition. REUTERS/Brian Snyder (UNITED STATES - Tags: HEALTH POLITICS SOCIETY BUSINESS) 

Four-year-old Will Rouillard (C) receives craniosacral therapy from physical therapist Don Ash (L) as his mother Rachel looks on, following surgery on Will's back to remove recurring cysts caused by chronic cystic hygroma, in Rochester, New Hampshire April 16, 2010. Will's parents worry that without the health insurance overhaul he would certainly be refused health insurance as an adult due to his pre-existing condition. REUTERS/Brian Snyder (UNITED STATES - Tags: HEALTH POLITICS SOCIETY BUSINESS) 

Four-year-old Will Rouillard receives craniosacral therapy, following surgery on his back to remove recurring cysts caused by chronic cystic hygroma, in Rochester, New Hampshire April 16, 2010. Will's parents worry that without the health insurance overhaul he would certainly be refused health insurance as an adult due to his pre-existing condition. REUTERS/Brian Snyder (UNITED STATES - Tags: HEALTH POLITICS SOCIETY BUSINESS) 

Four-year-old Will Rouillard receives craniosacral therapy, following surgery on his back to remove recurring cysts caused by chronic cystic hygroma, in Rochester, New Hampshire April 16, 2010. Will's parents worry that without the health insurance overhaul he would certainly be refused health insurance as an adult due to his pre-existing condition. REUTERS/Brian Snyder (UNITED STATES - Tags: HEALTH SOCIETY POLITICS BUSINESS) 

A French surgeon watches a monitor during surgery to remove an ovarian cyst at the Ambroise Pare hospital in Marseille, souther France on March 25, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

A French surgeon operates on a patient to remove an ovarian cyst at the Ambroise Pare hospital in Marseille, March 25, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

A French surgeon operates on a patient to remove an ovarian cyst at the Ambroise Pare hospital in Marseille, March 25, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

A French surgeon operates on a patient to remove an ovarian cyst at the Ambroise Pare hospital in Marseille, March 25, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

A French surgeon operates on a patient to remove an ovarian cyst at the Ambroise Pare hospital in Marseille, March 25, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

French surgeons operate on a patient to remove an ovarian cyst at the Ambroise Pare hospital in Marseille, March 25, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

French surgeons operate on a patient to remove an ovarian cyst at the Ambroise Pare hospital in Marseille, March 25, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

French surgeons operate on a patient to remove an ovarian cyst at the Ambroise Pare hospital in Marseille, March 25, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

French surgeons operate on a patient to remove an ovarian cyst at the Ambroise Pare hospital in Marseille, March 25, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

French surgeons operate on a patient to remove an ovarian cyst at the Ambroise Pare hospital in Marseille, March 25, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

French surgeons operate on a patient to remove an ovarian cyst at the Ambroise Pare hospital in Marseille, March 25, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

French surgeons operate on a patient to remove an ovarian cyst at the Ambroise Pare hospital in Marseille, March 25, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

French surgeons operate on a patient to remove an ovarian cyst at the Ambroise Pare hospital in Marseille, March 25, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

French surgeons operate on a patient to remove an ovarian cyst at the Ambroise Pare hospital in Marseille, March 25, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

French surgeons operate on a patient to remove an ovarian cyst at the Ambroise Pare hospital in Marseille, March 25, 2008. REUTERS/Jean-Paul Pelissier (FRANCE) 

British supermodel Naomi Campbell attends a news conference during Berlin Fashion Week in this January 28, 2008 file photo. Campbell was recovering in a Sao Paulo hospital from emergency abdominal surgery to remove a cyst, hospital officials and her spokesman said on February 26, 2008. Picture taken January 28, 2008. REUTERS/Johannes Eisele/Files (GERMANY) 

British supermodel Naomi Campbell wears a "We Love Brazil" T-shirt during a photocall with Brazilian President Luiz Inacio Lula da Silva in Brasilia, in this April 26, 2005, file photo. Campbell was recovering in a Sao Paulo hospital from emergency abdominal surgery to remove a cyst, hospital officials and her spokesman said on February 26, 2008. Picture taken April 26, 2005. REUTERS/Jamil Bittar (BRAZIL) 

Eleven-year-old Chen Hong-jiao from China's Sichuan province plays with her doll, received as a gift after arriving at a Hong Kong hospital, August 23, 2006. Chen regained hope this week when a sponsor flew her and her parents, both farmers, to the territory to remove the growth of a cyst near her spinal cord which left her unable to walk or go to school since 2003. REUTERS/Bobby Yip (HONG KONG) 

Eleven-year-old Chen Hong-jiao from China's Sichuan province poses with her doll, received as a gift after arriving at a Hong Kong hospital, August 23, 2006. Chen regained hope this week when a sponsor flew her and her parents, both farmers, to the territory to remove the growth of a cyst near her spinal cord which left her unable to walk or go to school since 2003. REUTERS/Bobby Yip (HONG KONG) 

Doctors form the American military (L) and the Philippines Armed Forces (R) remove a cyst from a patient in a makeshift operating room at a school in the village of Luuk, on the island of Jolo in this May 14, 2006 file photo. The remote island, around 950 km (600 miles) south of Manila, is the stronghold of Abu Sayyaf, a homegrown group of Muslim militants, and a training ground for members of al Qaeda's regional franchise, Jemaah Islamiah (JI), security sources say. Alarmed by Southeast Asia's jihadists using Jolo and other parts of the restive Philippine south as bases, the United States has been sending trainers and advisers to help soldiers in its former colony since 2002. To match feature Security Philippines. REUTERS/Darren Whiteside/Files 

Doctors form the American military (L) and the Philippines Armed Forces (R) remove a cyst from a patient in a makeshift operating room at a school in the village of Luuk, on the island of Jolo in this May 14, 2006 file photo. The remote island, around 950 km (600 miles) south of Manila, is the stronghold of Abu Sayyaf, a homegrown group of Muslim militants, and a training ground for members of al Qaeda's regional franchise, Jemaah Islamiah (JI), security sources say. Alarmed by Southeast Asia's jihadists using Jolo and other parts of the restive Philippine south as bases, the United States has been sending trainers and advisers to help soldiers in its former colony since 2002. To match feature Security Philippines. REUTERS/Darren Whiteside/Files 

CLIJSTERS LEAVES AFTER WATCHING HER BOYFRIEND HEWITT OF AUSTRALIA LOSE TO FEDERER OF SWITZERLAND IN THEIR MATCH AT WIMBLEDON. Kim Clijsters of Belgium prepares to leave the Centre Court after watching her boyfriend, seventh seed Lleyton Hewitt of Australia lose to top seed Roger Federer of Switzerland after their quarter final match at the Wimbledon Tennis Championships in London, June 30, 2004. Federer won the match 6-1 6-7 6-0 6-4. Clijsters recently underwent surgery to remove a cyst from her left wrist and is not expected to compete until September. REUTERS/Ian Hodgson 

Kim Clijsters of Belgium watches her boyfriend, seventh seed Lleyton Hewitt of Australia defeat ninth seed Carlos Moya of Spain 6-4 6-2 4-6 7-6 in their fourth round match at the Wimbledon Tennis Championships in London, June 28, 2004. Clijsters recently underwent surgery to remove a cyst from her left wrist and is not expected to compete until September. REUTERS/Ian Hodgson JD/WS 

Kim Clijsters of Belgium watches her boyfriend, [seventh seed Lleyton Hewitt of Australia defeat ninth seed Carlos Moya of Spain 6-4 6-2 4-6 7-6] in their fourth round match at the Wimbledon Tennis Championships in London, June 28, 2004. Clijsters recently underwent surgery to remove a cyst from her left wrist and is not expected to compete until September. 

President Clinton, wearing a bandage on his neck, leaves the White House for a campaign trip September 5. The President had a benign cyst removed from his neck in a 12-minute surgery at the White House September 4. 

African National Congress (ANC) Deputy-President Nelson Mandela (C) speaks to reporters June 2, 1990 after leaving a Johannesburg hospital where he had an operation to remove a non-malignant cyst from his bladder. Mandela leaves South Africa on Monday on a 13-nation tour lasting six weeks. On Mandela's left is his wife Winnie. Reuters/Ulli Michel 

Nelson Mandela, leader of the ANC, leaves the hospital where a cyst was removed from his bladder June 2, 1990