start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page=5742672 end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2019 dt-pub=20190523 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=A Bezoar Composed of Bilirubin Calcium, Calcium Carbonate, and Fatty Acid Calcium en-subtitle= kn-subtitle= en-abstract= kn-abstract= A 68-year-old Japanese man was diagnosed with bezoar in the stomach, which was endoscopically retrieved. The bezoar was composed of bilirubin calcium, calcium carbonate, and fatty acid calcium. Due to the presence of bilirubin calcium in the bezoar, we performed imaging studies of the bile duct; gallstones and common bile duct stones were identified. Although bezoar with components similar to bile is infrequently encountered, our findings suggest that a bezoar originating from bile should be considered among the differential diagnoses in patients without a recent consumption history of persimmons who demonstrate a mass in the digestive tract. This case highlights the importance of component analysis of gastric bezoars because its findings may alter the treatment plan. en-copyright= kn-copyright= en-aut-name=IwamuroMasaya en-aut-sei=Iwamuro en-aut-mei=Masaya kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=UrataHaruo en-aut-sei=Urata en-aut-mei=Haruo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=HirataShoichiro en-aut-sei=Hirata en-aut-mei=Shoichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=UekiToru en-aut-sei=Ueki en-aut-mei=Toru kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=HanabataTetsuro en-aut-sei=Hanabata en-aut-mei=Tetsuro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=TakedaSho en-aut-sei=Takeda en-aut-mei=Sho kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=TeraokaAkira en-aut-sei=Teraoka en-aut-mei=Akira kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=OkadaHiroyuki en-aut-sei=Okada en-aut-mei=Hiroyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= affil-num=1 en-affil=Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences kn-affil= affil-num=2 en-affil=Central Research Laboratory, Okayama University Medical School kn-affil= affil-num=3 en-affil=Department of Internal Medicine, Fukuyama City Hospital kn-affil= affil-num=4 en-affil=Department of Internal Medicine, Fukuyama City Hospital kn-affil= affil-num=5 en-affil=Department of Surgery, Teraoka Memorial Hospital kn-affil= affil-num=6 en-affil=Department of Internal Medicine, Teraoka Memorial Hospital kn-affil= affil-num=7 en-affil=Department of Neurosurgery, Teraoka Memorial Hospital kn-affil= affil-num=8 en-affil=Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences kn-affil= END