Body's own fat may seal Crohn's fistulas, avoid colostomy

This study tests a new approach for people with Crohn's disease who have complex anal fistulas that did not heal with standard treatments. Doctors will take a small amount of the patient's own fat, break it into tiny pieces, and inject it around the fistula to help it close. The goal is to heal the fistula, improve quality of life, and reduce the need for a permanent colostomy bag. The study involves 80 adults and will check results after 24 weeks using both physical exams and MRI scans.