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Intraoperative ultrasound was used to definitively identify both the coeliac axis and SMA in order to facilitate a safe excision. The patient recovered well with an uneventful discharge to home on postoperative day 8. Pathology confirmed the diagnosis of fetus in fetu.<\/jats:p>","DOI":"10.1136\/bcr-2021-245371","type":"journal-article","created":{"date-parts":[[2022,3,7]],"date-time":"2022-03-07T10:50:24Z","timestamp":1646650224000},"page":"e245371","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Fetus in fetu: use of intraoperative ultrasound for safe excision of a rare entity"],"prefix":"10.1136","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7416-177X","authenticated-orcid":false,"given":"Darci C","family":"Foote","sequence":"first","affiliation":[{"name":"Surgery, Beaumont Health, Royal Oak, Michigan, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alyssa","family":"Kirsch","sequence":"additional","affiliation":[{"name":"Radiology, Beaumont Health, Royal Oak, Michigan, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Terrence","family":"Metz","sequence":"additional","affiliation":[{"name":"Radiology, Beaumont Health, Royal Oak, Michigan, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pavan","family":"Brahmamdam","sequence":"additional","affiliation":[{"name":"Surgery, Beaumont Health, Royal Oak, Michigan, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2022,3,7]]},"reference":[{"key":"2025082709472246000_15.3.e245371.1","doi-asserted-by":"publisher","DOI":"10.1542\/peds.105.6.1335"},{"key":"2025082709472246000_15.3.e245371.2","doi-asserted-by":"crossref","first-page":"554","DOI":"10.1016\/j.epsc.2015.10.006","article-title":"Fetus in fetu: Review of the literature over the past 15 years","volume":"3","author":"Prescher","year":"2015","journal-title":"J Pediatr Surg Case Rep"},{"key":"2025082709472246000_15.3.e245371.3","doi-asserted-by":"crossref","first-page":"678479","DOI":"10.3389\/fped.2021.678479","article-title":"Rare Fetus-in-Fetu: experience from a large tertiary pediatric referral center","volume":"9","author":"Xiaowen","year":"2021","journal-title":"Front Pediatr"},{"key":"2025082709472246000_15.3.e245371.4","doi-asserted-by":"crossref","first-page":"286","DOI":"10.1016\/j.wneu.2020.03.156","article-title":"Intracranial fetus in Fetu-a pediatric rarity","volume":"139","author":"Surana","year":"2020","journal-title":"World Neurosurg"},{"key":"2025082709472246000_15.3.e245371.5","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-3468(97)90112-3"},{"key":"2025082709472246000_15.3.e245371.6","doi-asserted-by":"crossref","first-page":"945","DOI":"10.1007\/s003300050773","article-title":"Fetus-in-fetu in the scrotal sac of a newborn infant: imaging, surgical and pathological findings","volume":"9","author":"Shin","year":"1999","journal-title":"Eur Radiol"},{"key":"2025082709472246000_15.3.e245371.7","doi-asserted-by":"crossref","first-page":"197","DOI":"10.1007\/s00276-011-0868-9","article-title":"Fetus in fetu from newborn's mediastinum: case report and a review of literature","volume":"34","author":"Cingel","year":"2012","journal-title":"Surg Radiol Anat"},{"key":"2025082709472246000_15.3.e245371.8","doi-asserted-by":"crossref","unstructured":"Wang L , Long B , Zhou Q , et al . 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