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Due to the rarity and unknown etiology of these disease processes, standardized treatment protocols and objective clinical biomarkers of disease progression are missing. This is the first report to describe a 16 year old female with CG and CC who responded well to mesalamine therapy, evident by decreasing calprotectin levels after initiation of therapy.<\/jats:p>","DOI":"10.1177\/2333794x221094262","type":"journal-article","created":{"date-parts":[[2022,4,19]],"date-time":"2022-04-19T08:51:30Z","timestamp":1650358290000},"update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":6,"title":["Response to Mesalamine Therapy in Pediatric Collagenous Gastritis and Colitis: A Case Report and Review"],"prefix":"10.1177","volume":"9","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7277-4027","authenticated-orcid":false,"given":"Ankit","family":"Mishra","sequence":"first","affiliation":[{"name":"Georgetown University School of Medicine, Washington, DC, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joon","family":"Chung","sequence":"additional","affiliation":[{"name":"Georgetown University School of Medicine, Washington, DC, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Haresh","family":"Mani","sequence":"additional","affiliation":[{"name":"Inova Fairfax Hospital, Falls Church, VA, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mariastella","family":"Serrano","sequence":"additional","affiliation":[{"name":"Georgetown University School of Medicine, Washington, DC, USA"},{"name":"MedStar-Georgetown University Hospital, Washington, DC, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2022,4,19]]},"reference":[{"key":"bibr1-2333794X221094262","doi-asserted-by":"publisher","DOI":"10.1136\/gutjnl-2020-322332"},{"key":"bibr2-2333794X221094262","doi-asserted-by":"publisher","DOI":"10.4076\/1757-1626-2-7511."},{"key":"bibr3-2333794X221094262","doi-asserted-by":"publisher","DOI":"10.1097\/MPG.0000000000001975"},{"key":"bibr4-2333794X221094262","doi-asserted-by":"publisher","DOI":"10.1097\/00005176-200310000-00020"},{"issue":"3","key":"bibr5-2333794X221094262","first-page":"468","volume":"74","author":"Camarero Salces C","year":"2011","journal-title":"Acta Gastroenterol Belg"},{"issue":"6","key":"bibr6-2333794X221094262","first-page":"834","volume":"16","author":"Esselinckx W","year":"1989","journal-title":"J Rheumatol"},{"issue":"9","key":"bibr7-2333794X221094262","first-page":"998","volume":"143","author":"Busuttil A","year":"1989","journal-title":"Am J Dis Child"},{"key":"bibr8-2333794X221094262","doi-asserted-by":"publisher","DOI":"10.1136\/adc.64.6.867"},{"issue":"7","key":"bibr9-2333794X221094262","first-page":"418","volume":"24","author":"Perisic VN","year":"1992","journal-title":"Ital J Gastroenterol"},{"issue":"1","key":"bibr10-2333794X221094262","first-page":"87","volume":"11","author":"Lindstr\u00f6m CG","year":"1976","journal-title":"Pathol Eur"},{"key":"bibr11-2333794X221094262","doi-asserted-by":"publisher","DOI":"10.1016\/0016-5085(89)90403-4"},{"key":"bibr12-2333794X221094262","doi-asserted-by":"publisher","DOI":"10.1097\/PAS.0b013e318196a67f"},{"key":"bibr13-2333794X221094262","doi-asserted-by":"publisher","DOI":"10.1097\/pas.0b013e3181ae2545"},{"key":"bibr14-2333794X221094262","doi-asserted-by":"publisher","DOI":"10.1002\/14651858.CD003575.pub5."},{"key":"bibr15-2333794X221094262","doi-asserted-by":"publisher","DOI":"10.1097\/MPG.0b013e3181c15f60"},{"key":"bibr16-2333794X221094262","doi-asserted-by":"publisher","DOI":"10.1053\/j.gastro.2008.07.081"},{"key":"bibr17-2333794X221094262","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(16)32126-2"},{"key":"bibr18-2333794X221094262","doi-asserted-by":"publisher","DOI":"10.1155\/2010\/586092"}],"container-title":["Global Pediatric Health"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/2333794X221094262","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/full-xml\/10.1177\/2333794X221094262","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.1177\/2333794X221094262","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T07:07:49Z","timestamp":1777446469000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.1177\/2333794X221094262"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,1]]},"references-count":18,"alternative-id":["10.1177\/2333794X221094262"],"URL":"https:\/\/doi.org\/10.1177\/2333794x221094262","relation":{},"ISSN":["2333-794X","2333-794X"],"issn-type":[{"value":"2333-794X","type":"print"},{"value":"2333-794X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,1]]},"article-number":"2333794X221094262"}}