J Med Life Sci > Volume 16(2); 2019 > Article
Journal of Medicine and Life Science 2019;16(2):46-51.
DOI: https://doi.org/10.22730/jmls.2019.16.2.46    Published online September 18, 2019.
Long Lasting Mesalazine-induced Pancytopenia in a Patient with Ulcerative Colitis
Juyeon Ko, Hyun Joo Song, Sanghoon Han, Chiyoon Moon
Department of Internal Medicine, Jeju National University School of Medicine, Jeju, Korea
Correspondence:  Hyun Joo Song, Email: hyun-ju2002@hanmail.net
Inflammatory bowel disease (IBD) is an immune-mediated chronic inflammatory intestinal condition. With development of various treatment options for IBD, 5-aminosalicyclic acid (5-ASA) agents became the drugs choice due to high efficacy and low risk of complication, specifically effective at inducing and maintaining remission in ulcerative colitis (UC). Pancytopenia caused by 5-ASA agents, especially by mesalazine, has been rarely reported compared with azathioprine, which is commonly used for glucocorticoid-dependent IBD and known to have risk of bone marrow suppression. In the present report, we describe the case study of a 57-year-old woman diagnosed with UC, who developed pancytopenia due to adverse effect of mesalazine after recovery from azathiopurine-induced pancytopenia. After withdrawal of mesalazine, the laboratory values consistent with myelosuppression continued for 3 months while pancytopenia from azathioprine remained only for 2 weeks. Since pancytopenia can be fatal due to its risk of severe bleeding and infection, close monitoring of clinical presentation is important when starting mesalazine and laboratory data should be evaluated whenever the patients present related symptoms. Furthermore, we suggest that complete blood cell counts should be considered when resuming mesalazine following the development of pancytopenia from any cause, as routinely recommended for azathioprine use.
Key Words: Pancytopenia;, 5-ASA;, Mesalazine;, Ulcerative, colitis

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