start-ver=1.4 cd-journal=joma no-vol=26 cd-vols= no-issue=13 article-no= start-page=1439 end-page=1449 dt-received= dt-revised= dt-accepted= dt-pub-year=2020 dt-pub=20200407 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Review of the diagnosis of gastrointestinal lanthanum deposition en-subtitle= kn-subtitle= en-abstract= kn-abstract=Lanthanum carbonate is used for treatment of hyperphosphatemia mostly in patients with chronic renal failure. Although lanthanum carbonate is safe, recently, lanthanum deposition in the gastrointestinal mucosa of patients has been reported in the literature. This review provides an overview of gastroduodenal lanthanum deposition and focuses on diseasefs endoscopic, radiological, and histological features, prevalence, and outcome, by reviewing relevant clinical studies, case reports, and basic research findings, to better understand the endoscopic manifestation of gastrointestinal lanthanum deposition. The possible relationship between gastric lanthanum deposition pattern and gastric mucosal atrophy is also illustrated; in patients without gastric mucosal atrophy, gastric lanthanum deposition appears as diffuse white lesions in the posterior wall and lesser curvature of the gastric body. In the gastric mucosa with atrophy, lanthanum-related lesions likely appear as annular or granular whitish lesions. Moreover, these white lesions are probably more frequently observed in the lower part of the stomach, where intestinal metaplasia begins. 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=TanakaTakehiro en-aut-sei=Tanaka en-aut-mei=Takehiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 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=4 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 Pathology, Okayama University Hospital kn-affil= affil-num=4 en-affil=Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences kn-affil= en-keyword=Lanthanum carbonate kn-keyword=Lanthanum carbonate en-keyword=Hyperphosphatemia kn-keyword=Hyperphosphatemia en-keyword=Gastrointestinal endoscopy kn-keyword=Gastrointestinal endoscopy en-keyword=Lanthanum phosphate kn-keyword=Lanthanum phosphate en-keyword=Scanning electron microscopy kn-keyword=Scanning electron microscopy en-keyword=Energy-dispersive X-ray spectrometry kn-keyword=Energy-dispersive X-ray spectrometry END