{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,2]],"date-time":"2025-10-02T00:54:39Z","timestamp":1759366479763,"version":"build-2065373602"},"reference-count":11,"publisher":"American Society of Tropical Medicine and Hygiene","issue":"4","license":[{"start":{"date-parts":[[2025,10,1]],"date-time":"2025-10-01T00:00:00Z","timestamp":1759276800000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2025,10,1]]},"abstract":"<jats:title>ABSTRACT.<\/jats:title>\n<jats:p>We report two recent cases of diphyllobothriid cestode infection identified during colonoscopy in asymptomatic individuals in Tokyo, Japan. Both patients lacked distinctive dietary habits, consuming only commonly available raw fish. In one case, the tapeworm was found in the terminal ileum; in the other case, the parasite extended into the ascending colon, which is a rare site of detection during colonoscopy. Morphological features were consistent with <jats:italic>Dibothriocephalus nihonkaiensis<\/jats:italic>. Blood tests revealed no notable abnormalities. These cases underscore that such infections may occur even in individuals without high-risk dietary behaviors. With increased use of colonoscopy and the global consumption of raw fish, similar detections may become more common, emphasizing the need for clinical awareness, even in patients without recognized dietary risk factors.<\/jats:p>","DOI":"10.4269\/ajtmh.25-0254","type":"journal-article","created":{"date-parts":[[2025,7,29]],"date-time":"2025-07-29T14:30:33Z","timestamp":1753799433000},"page":"833-835","source":"Crossref","is-referenced-by-count":0,"title":["Colonoscopy-Based Diagnosis of Dibothriocephalus nihonkaiensis Infection Protruding into the Ascending Colon"],"prefix":"10.4269","volume":"113","author":[{"given":"Eisuke","family":"Adachi","sequence":"first","affiliation":[{"name":"Department of Infectious Diseases and Applied Immunology, IMSUT Hospital of The Institute of Medical Science, The University of Tokyo, Tokyo, Japan;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroyuki","family":"Nagai","sequence":"additional","affiliation":[{"name":"Department of Infectious Diseases and Applied Immunology, IMSUT Hospital of The Institute of Medical Science, The University of Tokyo, Tokyo, Japan;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Makoto","family":"Saito","sequence":"additional","affiliation":[{"name":"Department of Infectious Diseases and Applied Immunology, IMSUT Hospital of The Institute of Medical Science, The University of Tokyo, Tokyo, Japan;"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Akihiro","family":"Osawa","sequence":"additional","affiliation":[{"name":"Osawa Gastro Entero Proctology & Endoscopy Clinic Shinagawa, Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2795","reference":[{"key":"b1","series-title":"Parasitol Int","first-page":"102771","article-title":"A possible circulation of a dominant Dibothriocephalus nihonkaiensis haplotype in Japan revealed by molecular analysis of clinical tapeworm 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review","volume":"14","author":"Tsang","year":"2024"},{"key":"b6","series-title":"Clin Microbiol Rev","first-page":"146","article-title":"Update on the human broad tapeworm (genus diphyllobothrium), including clinical relevance","volume":"22","author":"Scholz","year":"2009"},{"key":"b7","series-title":"Trends Parasitol","first-page":"511","article-title":"Asian fish tapeworm: The most successful invasive parasite in freshwaters","volume":"34","author":"Kuchta","year":"2018"},{"key":"b8","series-title":"Acta Trop","first-page":"361","article-title":"Toward integrated opisthorchiasis control in northeast Thailand: The Lawa project","volume":"141","author":"Sripa","year":"2015"},{"key":"b9","series-title":"Epidemiol Infect","first-page":"2721","article-title":"Epidemiological analysis of a large enterohaemorrhagic Escherichia coli O111 outbreak in Japan associated with haemolytic uraemic syndrome and acute encephalopathy","volume":"143","author":"Yahata","year":"2015"},{"key":"b10","series-title":"Am J Trop Med Hyg","first-page":"1953","article-title":"Diphyllobothriasis from eating sushi","volume":"104","author":"Ando","year":"2021"},{"key":"b11","series-title":"Parasitol Res","first-page":"513","article-title":"Locally acquired infection with Dibothriocephalus nihonkaiense (=Diphyllobothrium nihonkaiense) in France: The importance of molecular diagnosis","volume":"119","author":"Greigert","year":"2020"}],"container-title":["The American Journal of Tropical Medicine and Hygiene"],"original-title":[],"link":[{"URL":"https:\/\/www.ajtmh.org\/view\/journals\/tpmd\/113\/4\/article-p833.xml","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.ajtmh.org\/downloadpdf\/journals\/tpmd\/113\/4\/article-p833.xml","content-type":"text\/html","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/www.ajtmh.org\/downloadpdf\/journals\/tpmd\/113\/4\/article-p833.xml","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,1]],"date-time":"2025-10-01T17:29:52Z","timestamp":1759339792000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.ajtmh.org\/view\/journals\/tpmd\/113\/4\/article-p833.xml"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,10,1]]},"references-count":11,"journal-issue":{"issue":"4"},"URL":"https:\/\/doi.org\/10.4269\/ajtmh.25-0254","relation":{},"ISSN":["0002-9637","1476-1645"],"issn-type":[{"type":"print","value":"0002-9637"},{"type":"electronic","value":"1476-1645"}],"subject":[],"published":{"date-parts":[[2025,10,1]]}}}