{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T12:06:51Z","timestamp":1753877211599,"version":"3.41.2"},"reference-count":10,"publisher":"Oxford University Press (OUP)","issue":"12","license":[{"start":{"date-parts":[[2019,12,18]],"date-time":"2019-12-18T00:00:00Z","timestamp":1576627200000},"content-version":"vor","delay-in-days":17,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2019,12,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>A 62-year-old woman had developed polymyositis 12\u00a0years previously and had taken oral steroids. Chest and abdominal computed tomography showed pneumomediastinum and free air in the abdominal cavity. Although a colon perforation was suspected, the perforation site could not be identified on the image. In addition, a diagnosis of oesophageal rupture could not be excluded from the findings of pneumomediastinum. After general anaesthesia, an upper gastrointestinal endoscopy was performed before surgery. Because there was no obvious perforation in the oesophagus, a laparotomy approach was used. A perforation was found on the mesentery side of the sigmoid colon, and a perforation of the sigmoid colon\u2019s diverticulum towards the mesentery was diagnosed. A Hartmann\u2019s procedure was performed. Colon perforations are rarely associated with pneumomediastinum. Preoperative endoscopy is useful to help diagnose and determine the surgical procedure if an obvious perforation cannot be identified.<\/jats:p>","DOI":"10.1093\/jscr\/rjz359","type":"journal-article","created":{"date-parts":[[2019,11,11]],"date-time":"2019-11-11T07:07:49Z","timestamp":1573456069000},"source":"Crossref","is-referenced-by-count":1,"title":["A case of sigmoid colon perforation presenting with pneumomediastinum"],"prefix":"10.1093","volume":"2019","author":[{"given":"Yukihito","family":"Kuroda","sequence":"first","affiliation":[{"name":"Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Katsuji","family":"Hisakura","sequence":"additional","affiliation":[{"name":"Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yoshimasa","family":"Akashi","sequence":"additional","affiliation":[{"name":"Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tsuyoshi","family":"Enomoto","sequence":"additional","affiliation":[{"name":"Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tatsuya","family":"Oda","sequence":"additional","affiliation":[{"name":"Department of Gastrointestinal and Hepato-Biliary-Pancreatic Surgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2019,12,17]]},"reference":[{"key":"2019121714372533400_ref1","doi-asserted-by":"crossref","first-page":"471","DOI":"10.1001\/archsurg.1971.01350050037012","article-title":"Intramesenteric perforation of colon diverticulitis","volume":"102","author":"Bell","year":"1971","journal-title":"Arch Surg"},{"key":"2019121714372533400_ref2","first-page":"733","article-title":"Case of sigmoid colon perforation presenting with pneumomediastinum and subcutaneous emphysema","volume":"36","author":"Kawamura","year":"2016","journal-title":"J Abdom Emerg Med"},{"key":"2019121714372533400_ref3","doi-asserted-by":"crossref","first-page":"566","DOI":"10.5833\/jjgs.38.566","article-title":"Massive retroperitoneal emphysema caused by the stercoral perforation of the sigmoid colon","volume":"38","author":"Hashimoto","year":"2005","journal-title":"Jpn J Gastroenterol 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bursectomy","volume":"76","author":"Mori","year":"2015","journal-title":"J Jpn Surg Assoc"},{"key":"2019121714372533400_ref7","first-page":"49","article-title":"Large-bowel perforation caused by cytomegalovirus enteritis during long-term steroid treatment for polymyositis","author":"Hayama","year":"2016","journal-title":"Jpn J Gastroenterol Surg"},{"key":"2019121714372533400_ref8","first-page":"33","article-title":"Case of spontaneous esophageal rupture successfully diagnosed with emergency endoscopy","volume":"20","author":"Horikawa","year":"2001","journal-title":"Hokuriku Journal of Surgery"},{"key":"2019121714372533400_ref9","doi-asserted-by":"crossref","first-page":"1865","DOI":"10.2169\/internalmedicine.54.4375","article-title":"Asymptomatic free air caused by Mallory-Weiss tears during endoscopy","volume":"54","author":"Kono","year":"2015","journal-title":"Intern 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