Recurrent pericarditis as an extra-intestinal manifestation of ulcerative colitis in a 14-year-old girl.

Pericarditis is a known complication of mesalazine in the treatment of ulcerative colitis. This case study illustrates that after diagnostic work-up, pericarditis should not always be attributed to the use of mesalazine. It may be the presentation of an extra-intestinal manifestation of ulcerative colitis. Restarting of mesalazine should be considered.