An adult male patient was admitted for a pericardial effusion occurring dup
ing a longstanding mesalazine treatment for Crohn's disease. The relation b
etween the drug's administration, symptoms and ECG changes suggests that th
e pericardial injury was caused by mesalazine. Also, the rapid resolution o
f clinical signs and ECC changes following the drug withdrawal were in agre
ement with this hypothesis. Eight months later, the patient remains well an
d symptom-free, and ECG and echocardiographic control were normal. (C) 1999
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