{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,10]],"date-time":"2026-03-10T13:10:01Z","timestamp":1773148201889,"version":"3.50.1"},"reference-count":11,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2024,2,22]],"date-time":"2024-02-22T00:00:00Z","timestamp":1708560000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JPGN rep."],"published-print":{"date-parts":[[2024,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Collagenous gastritis is a rare and chronic inflammatory condition of undetermined etiology characterized histologically by thickened subepithelial collagen bands and increased intraepithelial lymphocytes. Here, we present a collagenous gastritis case in a 16\u2010year\u2010old female with chronic abdominal pain, persistently elevated fecal calprotectin (507 and 796\u2009mcg\/g), and resolved iron deficiency anemia. The patient's history, laboratory tests, endoscopy, and magnetic resonance imaging ruled out common causes of elevated fecal calprotectin, including <jats:italic>Helicobacter pylori<\/jats:italic> and gastrointestinal infections, medications, celiac disease, and inflammatory bowel disease, as well as less common causes such as collagenous <jats:italic>colitis<\/jats:italic>. Esophagogastroduodenoscopy revealed significant antral nodularity. Gastric biopsies showed thickened subepithelial collagen band and surface epithelium damage with increased intraepithelial lymphocytes. The ileocolonoscopy was normal. This is among the first reported cases of collagenous gastritis with elevated fecal calprotectin levels that could solely be attributed to this condition.<\/jats:p>","DOI":"10.1002\/jpr3.12055","type":"journal-article","created":{"date-parts":[[2024,2,22]],"date-time":"2024-02-22T13:55:51Z","timestamp":1708610151000},"page":"152-157","source":"Crossref","is-referenced-by-count":4,"title":["Collagenous gastritis with elevated fecal calprotectin in a pediatric patient"],"prefix":"10.1002","volume":"5","author":[{"given":"Natalie","family":"Rodriguez","sequence":"first","affiliation":[{"name":"Department of Pediatrics University of California San Diego La Jolla California USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Soma","family":"Kumar","sequence":"additional","affiliation":[{"name":"Department of Pediatrics University of California San Diego La Jolla California USA"},{"name":"Division of Gastroenterology, Hepatology &amp; Nutrition Rady Children's Hospital San Diego San Diego California USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jun","family":"Mo","sequence":"additional","affiliation":[{"name":"Department of Pediatrics University of California San Diego La Jolla California USA"},{"name":"Division of Pathology Rady Children's Hospital San Diego San Diego California USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Phillipp","family":"Hartmann","sequence":"additional","affiliation":[{"name":"Department of Pediatrics University of California San Diego La Jolla California USA"},{"name":"Division of Gastroenterology, Hepatology &amp; Nutrition Rady Children's Hospital San Diego San Diego California USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,2,22]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dld.2021.03.010"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.14309\/ctg.0000000000000219"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1159\/000476062"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.3109\/00365521.2011.648953"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1080\/00365521.2019.1566493"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.c3369"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.3346\/jkms.2020.35.e120"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1155\/2013\/542363"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.14309\/crj.0000000000001028"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1177\/2333794X221094262"},{"issue":"1","key":"e_1_2_7_12_1","first-page":"41","article-title":"Collagenous gastritis: about two paediatric cases and literature review","volume":"83","author":"De Ronde O","year":"2020","journal-title":"Acta Gastro\u2010Enterol Belg"}],"container-title":["JPGN Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jpr3.12055","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,5,15]],"date-time":"2024-05-15T03:18:03Z","timestamp":1715743083000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/jpr3.12055"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,2,22]]},"references-count":11,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2024,5]]}},"alternative-id":["10.1002\/jpr3.12055"],"URL":"https:\/\/doi.org\/10.1002\/jpr3.12055","archive":["Portico"],"relation":{},"ISSN":["2691-171X","2691-171X"],"issn-type":[{"value":"2691-171X","type":"print"},{"value":"2691-171X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,2,22]]}}}