{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,27]],"date-time":"2026-03-27T21:03:51Z","timestamp":1774645431267,"version":"3.50.1"},"reference-count":10,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2024,9,29]],"date-time":"2024-09-29T00:00:00Z","timestamp":1727568000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["DEN Open"],"published-print":{"date-parts":[[2025,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>We encountered a case of a large hematoma developing with perforation shortly after a cold snare polypectomy for a colorectal adenoma. The patient underwent cold snare polypectomy for a 3\u2010mm type Is lesion in the transverse colon at another facility. Two hours later, she visited the emergency room due to abdominal pain. Contrast\u2010enhanced computed tomography revealed a 70 mm, high\u2010intensity mass in the transverse colon with contrast extravasation. We attempted transcatheter arterial embolization to stop the bleeding. Several hours later, the anemia had not worsened, but the severe abdominal pain persisted. Urgent laparoscopic right hemicolectomy was performed due to the possibility of gastrointestinal perforation. The surgery was successfully completed. Pathology reports confirmed the presence of an intramural hematoma in the proximal transverse colon with hemorrhagic infiltration of all layers, along with extensive ischemic changes. A perforation was identified in this area, with mucosal defects observed near the hole, possibly due to cold snare polypectomy.<\/jats:p>","DOI":"10.1002\/deo2.70017","type":"journal-article","created":{"date-parts":[[2024,9,30]],"date-time":"2024-09-30T05:47:51Z","timestamp":1727675271000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["A case of gastrointestinal perforation following transarterial embolization for an intramural hematoma after cold snare polypectomy of an adenoma in the transverse colon"],"prefix":"10.1002","volume":"5","author":[{"ORCID":"https:\/\/orcid.org\/0009-0004-9386-0890","authenticated-orcid":false,"given":"Yuu","family":"Kodama","sequence":"first","affiliation":[{"name":"Department of Gastroenterology New Tokyo Hospital Chiba Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuji","family":"Mizokami","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology New Tokyo Hospital Chiba Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuzo","family":"Toyama","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology New Tokyo Hospital Chiba Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroyasu","family":"Kusaka","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology New Tokyo Hospital Chiba Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gen","family":"Maeda","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology New Tokyo Hospital Chiba Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shingo","family":"Asahara","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology New Tokyo Hospital Chiba Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ryuji","family":"Nagahama","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology New Tokyo Hospital Chiba Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shin\u2010ichiro","family":"Horiguchi","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology New Tokyo Hospital Chiba Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hiroki","family":"Aoyama","sequence":"additional","affiliation":[{"name":"Department of Gastroenterology New Tokyo Hospital Chiba Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2024,9,29]]},"reference":[{"key":"e_1_2_10_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/deo2.199"},{"key":"e_1_2_10_3_1","doi-asserted-by":"publisher","DOI":"10.1111\/den.14263"},{"key":"e_1_2_10_4_1","first-page":"1236","article-title":"A case of intra\u2010abdominal haemorrhage after cold snare polypectomy for colorectal polyps","volume":"66","author":"Ikegami S","year":"2024","journal-title":"Gastroenterol Endosc"},{"key":"e_1_2_10_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/deo2.157"},{"key":"e_1_2_10_6_1","doi-asserted-by":"publisher","DOI":"10.1055\/a-0881-2856"},{"key":"e_1_2_10_7_1","doi-asserted-by":"publisher","DOI":"10.1111\/jgh.15697"},{"key":"e_1_2_10_8_1","doi-asserted-by":"publisher","DOI":"10.1055\/a-2183-5505"},{"key":"e_1_2_10_9_1","doi-asserted-by":"publisher","DOI":"10.3393\/ac.2016.32.6.239"},{"key":"e_1_2_10_10_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF02051022"},{"key":"e_1_2_10_11_1","doi-asserted-by":"publisher","DOI":"10.3748\/wjg.v18.i19.2438"}],"container-title":["DEN Open"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/deo2.70017","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,5,2]],"date-time":"2025-05-02T12:44:34Z","timestamp":1746189874000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/deo2.70017"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,9,29]]},"references-count":10,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2025,4]]}},"alternative-id":["10.1002\/deo2.70017"],"URL":"https:\/\/doi.org\/10.1002\/deo2.70017","archive":["Portico"],"relation":{},"ISSN":["2692-4609","2692-4609"],"issn-type":[{"value":"2692-4609","type":"print"},{"value":"2692-4609","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,9,29]]},"assertion":[{"value":"2024-04-02","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2024-09-14","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2024-09-29","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e70017"}}