{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T01:44:13Z","timestamp":1782956653685,"version":"3.54.5"},"reference-count":14,"publisher":null,"content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2023,1,19]]},"abstract":"<jats:sec>\n                    <jats:title\/>\n                    <jats:p>Foetus-in-fetu (FIF) is a condition where one of the twin foetuses is found developing inside the other. Differentiating this condition from fetiform teratoma (FT), in which the teratoma becomes highly differentiated to take a foetus-like appearance, often becomes arduous. Unfamiliarity with the situation and the presence of bone and hair within such lesions can potentially mislead the surgeon to diagnose it as a dermoid cyst erroneously. Suboptimal surgery can complicate things further when it comes to redoing operations and the final histopathological reporting. We report this case of a partially removed cystic retroperitoneal mass in a 14-year-old male, posing a significant surgical challenge due to dense adhesions to the vital retroperitoneal structures, such as common iliac vessels and ureter. We also faced similar diagnostic dilemmas during histopathology due to the tissues removed during the previous surgery. Based on gross and microscopic features, the possibility of a FIF or FT was rendered.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.4103\/ajps.ajps_26_22","type":"journal-article","created":{"date-parts":[[2023,1,20]],"date-time":"2023-01-20T01:02:03Z","timestamp":1674176523000},"update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":0,"title":["Retained Foetus-in-Fetu or Fetiform Teratoma \u2013 A Diagnostic Dilemma and Operative Challenge"],"prefix":"10.67481","author":[{"given":"Pankaj","family":"Kumar","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tushar S","family":"Mishra","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mukund Namdev","family":"Sable","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sindhu","family":"Sankaran","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Swagatika","family":"Samal","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":null,"reference":[{"key":"R1-20231113","doi-asserted-by":"crossref","first-page":"bcr2017220801","DOI":"10.1136\/bcr-2017-220801","article-title":"The entrapped twin:A case of fetus-in-fetu","volume":"2017","author":"Yaacob","year":"2017","journal-title":"BMJ Case Rep"},{"key":"R2-20231113","first-page":"563","article-title":"Fetus in fetu or differentiated teratomas?","volume":"49","author":"Basu","year":"2006","journal-title":"Indian J Pathol Microbiol"},{"key":"R3-20231113","doi-asserted-by":"crossref","first-page":"46","DOI":"10.12659\/PJR.899956","article-title":"Fetus in fetu:Case report and brief review of literature on embryologic origin, clinical presentation, imaging and differential diagnosis","volume":"82","author":"Sitharama","year":"2017","journal-title":"Pol J Radiol"},{"key":"R4-20231113","first-page":"28","article-title":"Fetus in fetu:Report of two cases","volume":"5","author":"Goyal","year":"2014","journal-title":"APSP J Case Rep"},{"key":"R5-20231113","doi-asserted-by":"crossref","first-page":"259","DOI":"10.7863\/jum.2006.25.2.259","article-title":"Fetus in fetu and fetaform teratoma in 2 neonates:An embryologic spectrum?","volume":"25","author":"Higgins","year":"2006","journal-title":"J Ultrasound Med"},{"key":"R6-20231113","doi-asserted-by":"crossref","first-page":"1476","DOI":"10.1016\/S0022-3468(97)90567-4","article-title":"Fetus-in-fetu with malignant recurrence","volume":"32","author":"Hopkins","year":"1997","journal-title":"J Pediatr Surg"},{"key":"R7-20231113","doi-asserted-by":"crossref","first-page":"1171","DOI":"10.1016\/j.radcr.2019.07.003","article-title":"Fetus in fetu:A rare case of intra-abdominal mass","volume":"14","author":"Issa","year":"2019","journal-title":"Radiol Case Rep"},{"key":"R8-20231113","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":"R9-20231113","first-page":"169","article-title":"Retroperitonial, teratoma as fetus in fetu \u2013A case report","volume":"42","author":"Shrivastava","year":"1999","journal-title":"Indian J Pathol Microbiol"},{"key":"R10-20231113","doi-asserted-by":"crossref","first-page":"354","DOI":"10.1046\/j.1440-1673.2001.00936.x","article-title":"Fetus in fetu. Rare cause of a lump in an adult's abdomen","volume":"45","author":"Awasthi","year":"2001","journal-title":"Australas Radiol"},{"key":"R11-20231113","doi-asserted-by":"crossref","first-page":"1338","DOI":"10.1016\/S0003-4975(00)02291-8","article-title":"Dysphagia caused by a fetus-in-fetu in a 27-year-old man","volume":"71","author":"Massad","year":"2001","journal-title":"Ann Thorac Surg"},{"key":"R12-20231113","first-page":"203","article-title":"Fetus in fetu in an adult:Diagnosis by computed tomography imaging","volume":"104","author":"Lee","year":"2005","journal-title":"J Formos Med Assoc"},{"key":"R13-20231113","doi-asserted-by":"crossref","first-page":"155","DOI":"10.1007\/s12262-007-0010-8","article-title":"27 cm fetus in fetu presenting in a 36-year-old man:Report of a rare case and brief review of literature","volume":"69","author":"Sharma","year":"2007","journal-title":"Indian J Surg"},{"key":"R14-20231113","doi-asserted-by":"crossref","first-page":"216","DOI":"10.4103\/0971-3026.54890","article-title":"Double fetus-in-fetu:CT scan diagnosis in an adult","volume":"19","author":"Daga","year":"2009","journal-title":"Indian J Radiol Imaging"}],"container-title":["African Journal of Paediatric Surgery"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.lww.com\/10.4103\/ajps.ajps_26_22","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T00:49:26Z","timestamp":1782953366000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.lww.com\/10.4103\/ajps.ajps_26_22"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,1,19]]},"references-count":14,"URL":"https:\/\/doi.org\/10.4103\/ajps.ajps_26_22","relation":{},"ISSN":["0189-6725"],"issn-type":[{"value":"0189-6725","type":"print"}],"subject":[],"published":{"date-parts":[[2023,1,19]]}}}