It may not be the most appetizing reading before a hearty holiday meal, but the New England Journal of Medicine is devoting part of its Thanksgiving issue to a giant hairball -- and not the feline kind. The prestigious journal details the case of a previously healthy 18-year-old woman who consulted a team of gastrointestinal specialists. She complained of a five-month history of pain and swelling in her abdomen, vomiting after eating and a 40-pound weight loss. After a scan of the woman's abdomen showed
