{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,3]],"date-time":"2026-03-03T17:06:37Z","timestamp":1772557597191,"version":"3.50.1"},"reference-count":18,"publisher":"BMJ","issue":"11","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2022,11,11]]},"published-print":{"date-parts":[[2022,11]]},"abstract":"<jats:p>Enterobius vermicularis infection is typically observed in paediatric patients and manifests with perianal pruritus, but other manifestations or ectopic presentations have been reported in the literature. We present the case of a man in his 60ss with a large-bowel obstruction with symptoms including a 4-day history of progressive abdominal pain, distension, vomiting and absolute constipation. On examination, his abdomen was distended with tinkling bowel sounds on auscultation. Cross-sectional imaging demonstrated an obstructing mass in the distal descending colon. An emergency laparoscopic Hartmann\u2019s procedure was performed and the patient made an uneventful recovery. An intraoperative colonoscopy demonstrated numerous white threadworms in the colon. Histological analysis demonstrated a pseudotumour related to Enterobius vermicularis infection. This case represents a rare differential diagnosis for a large-bowel obstruction.<\/jats:p>","DOI":"10.1136\/bcr-2022-252676","type":"journal-article","created":{"date-parts":[[2022,11,29]],"date-time":"2022-11-29T10:35:20Z","timestamp":1669718120000},"page":"e252676","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":3,"title":["Large-bowel obstruction secondary to Enterobius vermicularis pseudotumour"],"prefix":"10.1136","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2686-0300","authenticated-orcid":false,"given":"Stephen","family":"O'Brien","sequence":"first","affiliation":[{"name":"Department of Surgery, Mercy University Hospital, Cork, Ireland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sami","family":"Ahmed","sequence":"additional","affiliation":[{"name":"Department of Surgery, Mercy University Hospital, Cork, Ireland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brian","family":"Hayes","sequence":"additional","affiliation":[{"name":"Department of Histopathology, Cork University Hospital, Cork, Ireland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Michael","family":"O'Riordain","sequence":"additional","affiliation":[{"name":"Department of Surgery, Mercy University Hospital, Cork, Ireland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2022,11,29]]},"reference":[{"key":"2025082707503855000_15.11.e252676.1","doi-asserted-by":"crossref","DOI":"10.1186\/s41182-020-00270-3","article-title":"Prevalence of Enterobius vermicularis infections and associated risk factors among schoolchildren in Nakhon Si Thammarat, Thailand","volume":"48","author":"Laoraksawong","year":"2020","journal-title":"Trop Med Health"},{"key":"2025082707503855000_15.11.e252676.2","first-page":"189","article-title":"Enterobius 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