Thromboembolic complications such as deep vein thrombosis, portal and mesenteric vein thrombosis, and pulmonary emboli are rare extraintestinal manifestations of inflammatory bowel disease but are associated with a high morbidity and mortality. The cause of thrombotic complications in inflammatory bowel disease is generally considered to be hypercoagulability. We experienced a case of pulmonary embolism complicated in recurrent ileal Crohn's disease in a 36-year-old female who presented with a sudden onset of dyspnea and hemoptysis. She had taken total colectomy 2 years before due to colonic stricture complicating Crohns disease. An anti-coagulation therapy was successful in managing this rare complication of Crohn's disease. (Korean J Gastrointest Endosc 2001;22:111 - 115)