“…Additionally, the drugs used to treat IBD, such as mesalazine, sulfasalazine, and azathioprine, can cause pleuropericarditis (4). Of the 18 cases of mesalazine-induced intrathoracic lesions (e.g., pleuropericarditis, pericarditis, myopericarditis, and pleuritis) that were identified by searching the PubMed database (Table) (1, 2, 5-19), only two cases experienced mesalazineinduced pericarditis with CD.…”